través de esta serie intentaremos conocer diferentes facetas personales de los integrantes de nuestra “comunidad”.

El cuestionario, además de su principal objetivo, con sus respuestas quizás nos ayude a encontrar entre nosotros puntos en común que vayan más allá de nuestros temas

de trabajo y sea un aporte a futuros estudios históricos.

Esperamos que esta iniciativa pueda ser otro nexo entre los ictiólogos de la región,ya que consideramos que el resultado general trascendería nuestras fronteras

López, Hugo Luis

Ponte Gómez, Justina

English

Aquatic Commons

 
 Semblanzas Ictiológicas 
 
Matías Pandolfi 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Matías Pandolfi dando una charla en el 7mo. Simposio Internacional de 
Endocrinología de Peces, que organizara junto  al grupo de Gustavo Somoza y con apoyo de la ANPCYT  y  el 
CONICET, Buenos Aires, 2012 
 
 
 
Hugo L. López y Justina Ponte Gómez 
 
 
ProBiota 
División Zoología Vertebrados 
Museo de La Plata 
FCNyM, UNLP 
 
2013 
 
 
Imagen de tapa 
En Tecnópolis, 2012;  fotografía de prensa del Conicet 
  
 
 
 
El tiempo acaso no exista. Es posible que no pase y sólo 
pasemos nosotros. 
Tulio Carella 
 
 
 
Cinco minutos bastan para soñar toda una vida, así de relativo es el tiempo.  
 
Mario Benedetti 
 
 
 
 
 
Semblanzas Ictiológicas 
 
 
 
 
A través de esta serie intentaremos conocer diferentes facetas personales de los 
integrantes de nuestra “comunidad”.  
El cuestionario,  además de su principal objetivo,   con sus respuestas quizás nos 
ayude a  encontrar entre nosotros puntos en común que vayan más allá de nuest ros temas 
de trabajo y sea un aporte a futuros estudios históricos.  
Esperamos que esta iniciativa pueda ser otro nexo entre los ictiólogos de la región,  
ya que consideramos que el resultado general trascendería nuestras f ronteras. 
Hugo L. López 
 
 
 
 
ProBiota, Serie Técnica y Didáctica 21(08)-2013 4 
 
 
 
Nombre y apellido completos: Matías Pandolfi 
Lugar de nacimiento: C.A.B.A 
Lugar, provincia y país de residencia: C.A.B.A  
Título máximo,  Facultad y Universidad: Doctor en Ciencias Biológicas FCEN, UBA 
Posición laboral: Investigador Adjunto de Conicet, Profesor Adjunto UBA 
Lugar de trabajo: Laboratorio de Neuroendocrinología y Comportamiento. Facultad de Ciencias Exactas y 
Naturales (FCEN, UBA) 
Especialidad o línea de trabajo: Comportamiento social y reproducción en peces 
Correo electrónico: pandolfi@bg.fcen.uba.ar 
 
 
Cuestionario 
 
 
- Un libro: Cuentos de la Selva de Horacio Quiroga 
- Una película: Zeitgeist 
- Un CD : Sueño Stereo de Soda Stereo 
- Un artista: Alejandro Dolina 
- Un deporte: buceo 
- Un color: rojo 
- Una comida: pescado a la parrilla 
- Un animal: el quetzal 
- Una palabra: igualdad 
- Un número: 4 
- Una imagen: mi arribo a Machu Picchu con Fiorella 
- Un lugar: la selva 
- Una estación del año: primavera 
- Un nombre: Santiago 
- Un hombre: Néstor Carlos Kirchner 
- Una mujer: Estela Barnes de Carlotto 
- Un personaje de ficción: Eric Cartman de South Park 
- Un superhéroe: Superhijitus 
 
 
 
ProBiota, Serie Técnica y Didáctica 21(08)-2013 5 
 
 
 
 
Matías Pandolfi con sus sobrinos Delfina y Santiago Etchevers, 2012   
 
 
 
 
 
 
 
Review
Studies on the reproductive and developmental biology of
Cichlasoma dimerus (Percifomes, Cichlidae)
MATÍAS PANDOLFI*, MAXIMILIANO M. CÁNEPA, FERNANDO J. MEIJIDE, FELIPE ALONSO, GRACIELA REY VÁZQUEZ,
M. CRISTINA MAGGESE AND PAULA G. VISSIO
Departamento de Biodiversidad y Biología Experimental. Facultad de Ciencias Exactas y Naturales. Universidad de Buenos
Aires. Ciudad Universitaria (C1428EHA). Buenos Aires, Argentina.
Key words: reproduction, early development, neuroendocrinology, brain, pituitary, teleosts
ABSTRACT:  Many characteristics of the South American teleost fish Cichlasoma dimerus (body size, easy
breeding, undemanding maintenance) make it amenable to laboratory studies. In the last years, many of the
fundamental aspects of its reproductive and developmental biology have been addressed in our laboratory.
Rather recently, the immunohistochemical localization of pituitary hormones involved in reproduction and in
background color adaptation has been described in both adult and developing individuals, and the role of
FSH in ovarian differentiation has been established. These findings have been correlated with mapping of
some of their brain-derived controlling hormones. The latter include brain-derived gonadotropins which were
shown to be active in vitro in the control of pituitary hormone secretions. The emerging picture shows C.
dimerus as an interesting species in which many of their basic features have already been investigated and
which conform a solid platform for comparative studies correlating neurohormones, pituitary hormones and
behavior, from the molecular to the organismic level.
BIOCELL
2009, 33(1): 1-18
ISSN 0327 - 9545
PRINTED IN ARGENTINA
1. Teleost fishes in physiological and developmental
studies.
Teleost fishes represent the most numerous and
diversified vertebrate group. Though fish physiology
has been studied for many decades (Ball and Baker,
1969; Hoar, 1969; Conlon, 2000; Price et al., 2008),
the use of very different species, together with the idea
that differences were more important than similarities,
gathered a lot of data, and sometimes non coherent ones.
During the last years, however, several research
groups have put the emphasis in the importance of us-
ing teleost fishes not for comparative studies within the
class, but as general vertebrate physiological models,
by taking advantage of some of their unique properties.
One of these properties is an unusual characteristic of
the fish nervous system: fish brains can remain alive
and responsive for many hours after removal from the
animal (Teyler et al., 1981). This has allowed research-
ers to use intact-brain preparations that have the advan-
tage, compared to mammalian brain-slice preparations,
of allowing afferent and efferent connections to remain
functional (Wayne et al., 2005). Another interesting fea-
*Address correspondence to: Matías Pandolfi. Departmento de
Biodiversidad y Biología Experimental, Facultad de Ciencias
Exactas y Naturales. Universidad de Buenos Aires, Ciudad
Universitaria, (C1428EHA) Buenos Aires, ARGENTINA.
E-mail: pandolfi@bg.fcen.uba.ar
Received: July 17, 2008. Final version received: October 23,
2008. Accepted: February 9, 2009.
Physiology & Behavior 106 (2012) 612–618
Contents lists available at SciVerse ScienceDirect
Physiology & Behavior
j ourna l homepage: www.e lsev ie r .com/ locate /phbDominance hierarchies and social status ascent opportunity: Anticipatory behavioral
and physiological adjustments in a Neotropical cichlid fish
Felipe Alonso a, Renato Massaaki Honji b, Renata Guimarães Moreira b, Matías Pandolfi a,⁎
a Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, (C1428EHA) Buenos Aires,
Argentina
b Departamento de Fisiologia, Instituto de Biociências-USP, Rua do Matão, travessa 14,n.321, sala 220 Cidade Universitária, São Paulo, SP, Brazil⁎ Corresponding author at: Departamento de Biodiver
Facultad de Ciencias Exactas y Naturales, Universidad de
dad Universitaria, C1428EHA, Ciudad Autónoma de Buen
tina. Tel.: +54 11 4576 3348; fax: +54 11 4576 3384.
E-mail address: pandolfi@bg.fcen.uba.ar (M. Pandolfi
0031-9384/$ – see front matter © 2012 Elsevier Inc. All
doi:10.1016/j.physbeh.2012.04.003a b s t r a c ta r t i c l e i n f oArticle history:
Received 8 August 2011
Received in revised form 8 February 2012
Accepted 3 April 2012
Available online 12 April 2012
Keywords:
Cichlasoma dimerus
Aggressive behavior
Females social hierarchyIn this work we characterized the social hierarchy of non-reproductive individuals of Cichlasoma dimerus
(Heckel, 1840), independently for both sexes, and its relationship to the opportunity for social status ascent.
Female and male individuals who were located on the top rank of the social hierarchy, ascended in social sta-
tus when the opportunity arose, therefore indicating that dominance is directly correlated with social ascent
likelihood. Dominance was positively correlated with size in males but not in females, suggesting for the lat-
ter a relationship with intrinsic features such as aggressiveness or personality rather than to body and/or
ovarian size. Physiological and morphometrical variables related to reproduction, stress and body color
were measured in non-reproductive fish and correlated with dominance and social ascent likelihood. Domi-
nance was negatively correlated with plasma cortisol levels for both sexes. No correlation with dominance
was found for androgen plasma levels (testosterone and 11-ketotestosterone). No correlation was detected
between dominance and the selected morphological and physiological variables measured in females, sug-
gesting no reproductive inhibition in this sex at a physiological level and that all females seem to be ready
for reproduction. In contrast, social hierarchy of non-reproductive males was found to be positively correlat-
ed with follicle stimulating hormone (FSH) pituitary content levels and gonadosomatic indexes. This suggests
an adaptive mechanism of non reproductive males, adjusting their reproductive investment in relation to
their likelihood for social status ascent, as perceived by their position in the social hierarchy. This likelihood
is translated into a physiological signal through plasma cortisol levels that inhibit gonad investment through
pituitary inhibition of FSH, representing an anticipatory response to the opportunity for social status ascent.
© 2012 Elsevier Inc. All rights reserved.1. Introduction
During the reproductive season, some species establish a social
dominance hierarchy which determines access to resources and re-
production for individuals of the highest rank [1]. Predation or envi-
ronmental changes may generate an opportunity for social ascent of
lower ranked individuals, allowing them to reproduce. Cichlid fish
(Cichlidae) are a widespread family of Teleost fish that comprises
three major monophyletic clades –Malagasy/Indian, African and Neo-
tropical [2]. Cichlids have been widely studied in the field of social
control of reproduction since they exhibit complex social behaviors,
territoriality and parental care of the fry [3]; however most studied
species are of African origin: Astatotilapia burtoni (Günther, 1894)
and Oreochromis mossambicus (Peters, 1858) [4–9]. In contrast,sidad y Biología Experimental,
Buenos Aires, Pabellón 2, Ciu-
os Aires, Buenos Aires, Argen-
).
rights reserved.Neotropical cichlids behavior and physiology is poorly understood al-
though they represent a separate clade of more than 60 genera and
600 species inhabiting a great diversity of environments and present-
ing particular ecological and behavioral traits as a consequence of
their independent evolution from African cichlids what suggest that
probably there are considerable differences at the physiological and
behavioral levels between these groups. Rapid physiological and
genomic changes occur during social status ascent in A. burtoni
[10–13]. Non-territorial males and animals ascending in social rank
showed an increased growth rate, whereas territorial males and ani-
mals descending in social rank slowed their growth rate or even
shrank [14]; changes in the size of neurons involved in the control
of growth (e.g. somatostatin-expressing neurons) were also observed
[15]. Differences in reproductive physiology were also found between
territorial and non-territorial fish in this species, probably mediated
by the hormone cortisol [4]. However, subordinate individuals of A.
burtoni retain reproductive competence during social suppression
[9]. Concordantly, in Cichlasoma dimerus (Heckel, 1840), no reproduc-
tive inhibition at the gonadal level was observed in non-reproductive
individuals [16].
ProBiota, Serie Técnica y Didáctica 21(08)-2013 8 
 
 
 
 
 
 
 
 
Difusión de la ciencia con el  stand: Vida, pasión y muerte en el agua, Feria del Libro, 2013 
De izquierda a derecha: la estudiante Agustina Birba, los tesistas Felipe Alonso y Martín Ramallo, y Matías Pandolfi, 
integrantes del Laboratorio de Neuroendocrinología y  Comportamiento 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ProBiota, Serie Técnica y Didáctica 21(08)-2013 9 
 
 
 
 
 
 
 
 
 
 
 
 
 
Visita al Taj Mahal previa al 9no. Simposio Internacional de Fisiología Reproductiva de Peces en Cochin, India, 2011  
De izquierda a derecha:  Renato Honji (USP), Matías Pandolfi (UBA), Renata Guimaraes-Moreira(USP) y Fabiana Lo 
Nostro (UBA) 
 
 
 
 
 
 
 
 
 
PrroBii ott a  
  
Serr ii e  Ténii ca  y  Dii dáctt ii ca  
21  --   Coll eccii ón  Sembll anzz asII ctt ii oll ógii cas  
Arr chii vos  Edii tt ados  
01 – Pedro Carriquiriborde. Hugo L. López y Justina Ponte Gómez. 
02 – Pablo Agustín Tedesco. Hugo L. López y Justina Ponte Gómez. 
03 – Leonardo Ariel Venerus. Hugo L. López y Justina Ponte Gómez. 
04 – Alejandra Vanina Volpedo. Hugo L. López y Justina Ponte Gómez. 
05 – Cecilia Yanina Di Prinzio. Hugo L. López y Justina Ponte Gómez 
06 – Juan Martín Díaz de Astarloa. Hugo L. López y Justina Ponte Gómez 
07 – Alejandro Arturo Dománico.  Hugo L. López y Justina Ponte Gómez. 
 
Esta publicación debe citarse: 
 
López, H. L. & J. Ponte Gómez. 2013. Semblanzas Ictiológicas: Matías Pandolfi. ProBiota, 
FCNyM, UNLP, La Plata, Argentina, Serie Técnica y Didáctica 21(08): 1-11. ISSN 
1515-9329. 
 
 
 
ProBiota 
(Programa para el estudio y uso sustentable de la biota austral) 
 
Museo de La  Plata 
Facultad de Ciencias Naturales y Museo, UNLP 
Paseo del Bosque s/n, 1900 La Plata, Argentina 
 
 
Directores 
 
Dr. Hugo L. López 
hlopez@fcnym.unlp.edu.ar 
 
Dr. Jorge V. Crisci 
crisci@fcnym.unlp.edu.ar 
 
 
 
Versión electrónica, diseño y composición 
 
Justina Ponte Gómez 
División Zoología Vertebrados 
Museo de La Plata 
FCNyM, UNLP 
jpg_47@yahoo.com.mx 
 
 
http://ictiologiaargentina.blogspot.com/ 
http://raulringuelet.blogspot.com.ar/ 
http://aquacomm.fcla.edu 
 
http://sedici.unlp.edu.ar/ 
 
Indizada en la base de datos ASFA C.S.A. 


Semblanzas Ictiológicas: Matías Pandolfi

A través de esta serie intentaremos conocer diferentes facetas personales de los integrantes de nuestra “comunidad”. El cuestionario, además de su principal objetivo, con sus respuestas quizás nos ayude a encontrar entre nosotros puntos en común que vayan más allá de nuestros temas de trabajo y sea un aporte a futuros estudios históricos. Esperamos que esta iniciativa pueda ser otro nexo entre los ictiólogos de la región, ya que consideramos que el resultado general trascendería nuestras fronteras.Fil: López, Hugo L..Fil: Ponte Gomez, Justina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

López, Hugo L.

Ponte Gomez, Justina

LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas

  Semblanzas Ictiológicas  Matías Pandolfi                               Matías Pandolfi dando una charla en el 7mo. Simposio Internacional de Endocrinología de Peces, que organizara junto  al grupo de Gustavo Somoza y con apoyo de la ANPCYT  y  el CONICET, Buenos Aires, 2012    Hugo L. López y Justina Ponte Gómez   ProBiota División Zoología Vertebrados Museo de La Plata FCNyM, UNLP  2013   Imagen de tapa En Tecnópolis, 2012;  fotografía de prensa del Conicet      El tiempo acaso no exista. Es posible que no pase y sólo pasemos nosotros. Tulio Carella    Cinco minutos bastan para soñar toda una vida, así de relativo es el tiempo.   Mario Benedetti      Semblanzas Ictiológicas     A través de esta serie intentaremos conocer diferentes facetas personales de los integrantes de nuestra “comunidad”.  El cuestionario,  además de su principal objetivo,   con sus respuestas quizás nos ayude a  encontrar entre nosotros puntos en común que vayan más allá de nuest ros temas de trabajo y sea un aporte a futuros estudios históricos.  Esperamos que esta iniciativa pueda ser otro nexo entre los ictiólogos de la región,  ya que consideramos que el resultado general trascendería nuestras f ronteras. Hugo L. López     ProBiota, Serie Técnica y Didáctica 21(08)-2013 4    Nombre y apellido completos: Matías Pandolfi Lugar de nacimiento: C.A.B.A Lugar, provincia y país de residencia: C.A.B.A  Título máximo,  Facultad y Universidad: Doctor en Ciencias Biológicas FCEN, UBA Posición laboral: Investigador Adjunto de Conicet, Profesor Adjunto UBA Lugar de trabajo: Laboratorio de Neuroendocrinología y Comportamiento. Facultad de Ciencias Exactas y Naturales (FCEN, UBA) Especialidad o línea de trabajo: Comportamiento social y reproducción en peces Correo electrónico: pandolfi@bg.fcen.uba.ar   Cuestionario   - Un libro: Cuentos de la Selva de Horacio Quiroga - Una película: Zeitgeist - Un CD : Sueño Stereo de Soda Stereo - Un artista: Alejandro Dolina - Un deporte: buceo - Un color: rojo - Una comida: pescado a la parrilla - Un animal: el quetzal - Una palabra: igualdad - Un número: 4 - Una imagen: mi arribo a Machu Picchu con Fiorella - Un lugar: la selva - Una estación del año: primavera - Un nombre: Santiago - Un hombre: Néstor Carlos Kirchner - Una mujer: Estela Barnes de Carlotto - Un personaje de ficción: Eric Cartman de South Park - Un superhéroe: Superhijitus    ProBiota, Serie Técnica y Didáctica 21(08)-2013 5     Matías Pandolfi con sus sobrinos Delfina y Santiago Etchevers, 2012          ReviewStudies on the reproductive and developmental biology ofCichlasoma dimerus (Percifomes, Cichlidae)MATÍAS PANDOLFI*, MAXIMILIANO M. CÁNEPA, FERNANDO J. MEIJIDE, FELIPE ALONSO, GRACIELA REY VÁZQUEZ,M. CRISTINA MAGGESE AND PAULA G. VISSIODepartamento de Biodiversidad y Biología Experimental. Facultad de Ciencias Exactas y Naturales. Universidad de BuenosAires. Ciudad Universitaria (C1428EHA). Buenos Aires, Argentina.Key words: reproduction, early development, neuroendocrinology, brain, pituitary, teleostsABSTRACT:  Many characteristics of the South American teleost fish Cichlasoma dimerus (body size, easybreeding, undemanding maintenance) make it amenable to laboratory studies. In the last years, many of thefundamental aspects of its reproductive and developmental biology have been addressed in our laboratory.Rather recently, the immunohistochemical localization of pituitary hormones involved in reproduction and inbackground color adaptation has been described in both adult and developing individuals, and the role ofFSH in ovarian differentiation has been established. These findings have been correlated with mapping ofsome of their brain-derived controlling hormones. The latter include brain-derived gonadotropins which wereshown to be active in vitro in the control of pituitary hormone secretions. The emerging picture shows C.dimerus as an interesting species in which many of their basic features have already been investigated andwhich conform a solid platform for comparative studies correlating neurohormones, pituitary hormones andbehavior, from the molecular to the organismic level.BIOCELL2009, 33(1): 1-18ISSN 0327 - 9545PRINTED IN ARGENTINA1. Teleost fishes in physiological and developmentalstudies.Teleost fishes represent the most numerous anddiversified vertebrate group. Though fish physiologyhas been studied for many decades (Ball and Baker,1969; Hoar, 1969; Conlon, 2000; Price et al., 2008),the use of very different species, together with the ideathat differences were more important than similarities,gathered a lot of data, and sometimes non coherent ones.During the last years, however, several researchgroups have put the emphasis in the importance of us-ing teleost fishes not for comparative studies within theclass, but as general vertebrate physiological models,by taking advantage of some of their unique properties.One of these properties is an unusual characteristic ofthe fish nervous system: fish brains can remain aliveand responsive for many hours after removal from theanimal (Teyler et al., 1981). This has allowed research-ers to use intact-brain preparations that have the advan-tage, compared to mammalian brain-slice preparations,of allowing afferent and efferent connections to remainfunctional (Wayne et al., 2005). Another interesting fea-*Address correspondence to: Matías Pandolfi. Departmento deBiodiversidad y Biología Experimental, Facultad de CienciasExactas y Naturales. Universidad de Buenos Aires, CiudadUniversitaria, (C1428EHA) Buenos Aires, ARGENTINA.E-mail: pandolfi@bg.fcen.uba.arReceived: July 17, 2008. Final version received: October 23,2008. Accepted: February 9, 2009.Physiology & Behavior 106 (2012) 612–618Contents lists available at SciVerse ScienceDirectPhysiology & Behaviorj ourna l homepage: www.e lsev ie r .com/ locate /phbDominance hierarchies and social status ascent opportunity: Anticipatory behavioraland physiological adjustments in a Neotropical cichlid fishFelipe Alonso a, Renato Massaaki Honji b, Renata Guimarães Moreira b, Matías Pandolfi a,⁎a Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, (C1428EHA) Buenos Aires,Argentinab Departamento de Fisiologia, Instituto de Biociências-USP, Rua do Matão, travessa 14,n.321, sala 220 Cidade Universitária, São Paulo, SP, Brazil⁎ Corresponding author at: Departamento de BiodiverFacultad de Ciencias Exactas y Naturales, Universidad dedad Universitaria, C1428EHA, Ciudad Autónoma de Buentina. Tel.: +54 11 4576 3348; fax: +54 11 4576 3384.E-mail address: pandolfi@bg.fcen.uba.ar (M. Pandolfi0031-9384/$ – see front matter © 2012 Elsevier Inc. Alldoi:10.1016/j.physbeh.2012.04.003a b s t r a c ta r t i c l e i n f oArticle history:Received 8 August 2011Received in revised form 8 February 2012Accepted 3 April 2012Available online 12 April 2012Keywords:Cichlasoma dimerusAggressive behaviorFemales social hierarchyIn this work we characterized the social hierarchy of non-reproductive individuals of Cichlasoma dimerus(Heckel, 1840), independently for both sexes, and its relationship to the opportunity for social status ascent.Female and male individuals who were located on the top rank of the social hierarchy, ascended in social sta-tus when the opportunity arose, therefore indicating that dominance is directly correlated with social ascentlikelihood. Dominance was positively correlated with size in males but not in females, suggesting for the lat-ter a relationship with intrinsic features such as aggressiveness or personality rather than to body and/orovarian size. Physiological and morphometrical variables related to reproduction, stress and body colorwere measured in non-reproductive fish and correlated with dominance and social ascent likelihood. Domi-nance was negatively correlated with plasma cortisol levels for both sexes. No correlation with dominancewas found for androgen plasma levels (testosterone and 11-ketotestosterone). No correlation was detectedbetween dominance and the selected morphological and physiological variables measured in females, sug-gesting no reproductive inhibition in this sex at a physiological level and that all females seem to be readyfor reproduction. In contrast, social hierarchy of non-reproductive males was found to be positively correlat-ed with follicle stimulating hormone (FSH) pituitary content levels and gonadosomatic indexes. This suggestsan adaptive mechanism of non reproductive males, adjusting their reproductive investment in relation totheir likelihood for social status ascent, as perceived by their position in the social hierarchy. This likelihoodis translated into a physiological signal through plasma cortisol levels that inhibit gonad investment throughpituitary inhibition of FSH, representing an anticipatory response to the opportunity for social status ascent.© 2012 Elsevier Inc. All rights reserved.1. IntroductionDuring the reproductive season, some species establish a socialdominance hierarchy which determines access to resources and re-production for individuals of the highest rank [1]. Predation or envi-ronmental changes may generate an opportunity for social ascent oflower ranked individuals, allowing them to reproduce. Cichlid fish(Cichlidae) are a widespread family of Teleost fish that comprisesthree major monophyletic clades –Malagasy/Indian, African and Neo-tropical [2]. Cichlids have been widely studied in the field of socialcontrol of reproduction since they exhibit complex social behaviors,territoriality and parental care of the fry [3]; however most studiedspecies are of African origin: Astatotilapia burtoni (Günther, 1894)and Oreochromis mossambicus (Peters, 1858) [4–9]. In contrast,sidad y Biología Experimental,Buenos Aires, Pabellón 2, Ciu-os Aires, Buenos Aires, Argen-).rights reserved.Neotropical cichlids behavior and physiology is poorly understood al-though they represent a separate clade of more than 60 genera and600 species inhabiting a great diversity of environments and present-ing particular ecological and behavioral traits as a consequence oftheir independent evolution from African cichlids what suggest thatprobably there are considerable differences at the physiological andbehavioral levels between these groups. Rapid physiological andgenomic changes occur during social status ascent in A. burtoni[10–13]. Non-territorial males and animals ascending in social rankshowed an increased growth rate, whereas territorial males and ani-mals descending in social rank slowed their growth rate or evenshrank [14]; changes in the size of neurons involved in the controlof growth (e.g. somatostatin-expressing neurons) were also observed[15]. Differences in reproductive physiology were also found betweenterritorial and non-territorial fish in this species, probably mediatedby the hormone cortisol [4]. However, subordinate individuals of A.burtoni retain reproductive competence during social suppression[9]. Concordantly, in Cichlasoma dimerus (Heckel, 1840), no reproduc-tive inhibition at the gonadal level was observed in non-reproductiveindividuals [16].ProBiota, Serie Técnica y Didáctica 21(08)-2013 8         Difusión de la ciencia con el  stand: Vida, pasión y muerte en el agua, Feria del Libro, 2013 De izquierda a derecha: la estudiante Agustina Birba, los tesistas Felipe Alonso y Martín Ramallo, y Matías Pandolfi, integrantes del Laboratorio de Neuroendocrinología y  Comportamiento                ProBiota, Serie Técnica y Didáctica 21(08)-2013 9              Visita al Taj Mahal previa al 9no. Simposio Internacional de Fisiología Reproductiva de Peces en Cochin, India, 2011  De izquierda a derecha:  Renato Honji (USP), Matías Pandolfi (UBA), Renata Guimaraes-Moreira(USP) y Fabiana Lo Nostro (UBA)          PrroBii ott a    Serr ii e  Ténii ca  y  Dii dáctt ii ca  21  --   Coll eccii ón  Sembll anzz asII ctt ii oll ógii cas  Arr chii vos  Edii tt ados  01 – Pedro Carriquiriborde. Hugo L. López y Justina Ponte Gómez. 02 – Pablo Agustín Tedesco. Hugo L. López y Justina Ponte Gómez. 03 – Leonardo Ariel Venerus. Hugo L. López y Justina Ponte Gómez. 04 – Alejandra Vanina Volpedo. Hugo L. López y Justina Ponte Gómez. 05 – Cecilia Yanina Di Prinzio. Hugo L. López y Justina Ponte Gómez 06 – Juan Martín Díaz de Astarloa. Hugo L. López y Justina Ponte Gómez 07 – Alejandro Arturo Dománico.  Hugo L. López y Justina Ponte Gómez.  Esta publicación debe citarse:  López, H. L. & J. Ponte Gómez. 2013. Semblanzas Ictiológicas: Matías Pandolfi. ProBiota, FCNyM, UNLP, La Plata, Argentina, Serie Técnica y Didáctica 21(08): 1-11. ISSN 1515-9329.    ProBiota (Programa para el estudio y uso sustentable de la biota austral)  Museo de La  Plata Facultad de Ciencias Naturales y Museo, UNLP Paseo del Bosque s/n, 1900 La Plata, Argentina   Directores  Dr. Hugo L. López hlopez@fcnym.unlp.edu.ar  Dr. Jorge V. Crisci crisci@fcnym.unlp.edu.ar    Versión electrónica, diseño y composición  Justina Ponte Gómez División Zoología Vertebrados Museo de La Plata FCNyM, UNLP jpg_47@yahoo.com.mx   http://ictiologiaargentina.blogspot.com/ http://raulringuelet.blogspot.com.ar/ http://aquacomm.fcla.edu  http://sedici.unlp.edu.ar/  Indizada en la base de datos ASFA C.S.A. 

Spanish

Nombre y apellido completos: Matías Pandolfi
Lugar de nacimiento: C.A.B.A
Lugar, provincia y país de residencia: C.A.B.A
Título máximo, Facultad y Universidad: Doctor en Ciencias Biológicas FCEN, UBA
Posición laboral: Investigador Adjunto de Conicet, Profesor Adjunto UBA
Lugar de trabajo: Laboratorio de Neuroendocrinología y Comportamiento. Facultad de Ciencias Exactas y
Naturales (FCEN, UBA)
Especialidad o línea de trabajo: Comportamiento social y reproducción en peceFacultad de Ciencias Naturales y Muse

Servicio de Difusión de la Creación Intelectual

  Semblanzas Ictiológicas  Matías Pandolfi                               Matías Pandolfi dando una charla en el 7mo. Simposio Internacional de Endocrinología de Peces, que organizara junto  al grupo de Gustavo Somoza y con apoyo de la ANPCYT  y  el CONICET, Buenos Aires, 2012    Hugo L. López y Justina Ponte Gómez   ProBiota División Zoología Vertebrados Museo de La Plata FCNyM, UNLP  2013   Imagen de tapa En Tecnópolis, 2012;  fotografía de prensa del Conicet      El tiempo acaso no exista. Es posible que no pase y sólo pasemos nosotros. Tulio Carella    Cinco minutos bastan para soñar toda una vida, así de relativo es el tiempo.   Mario Benedetti      Semblanzas Ictiológicas     A través de esta serie intentaremos conocer diferentes facetas personales de los integrantes de nuestra “comunidad”.  El cuestionario,  además de su principal objetivo,   con sus respuestas quizás nos ayude a  encontrar entre nosotros puntos en común que vayan más allá de nuest ros temas de trabajo y sea un aporte a futuros estudios históricos.  Esperamos que esta iniciativa pueda ser otro nexo entre los ictiólogos de la región,  ya que consideramos que el resultado general trascendería nuestras f ronteras. Hugo L. López     ProBiota, Serie Técnica y Didáctica 21(08)-2013 4    Nombre y apellido completos: Matías Pandolfi Lugar de nacimiento: C.A.B.A Lugar, provincia y país de residencia: C.A.B.A  Título máximo,  Facultad y Universidad: Doctor en Ciencias Biológicas FCEN, UBA Posición laboral: Investigador Adjunto de Conicet, Profesor Adjunto UBA Lugar de trabajo: Laboratorio de Neuroendocrinología y Comportamiento. Facultad de Ciencias Exactas y Naturales (FCEN, UBA) Especialidad o línea de trabajo: Comportamiento social y reproducción en peces Correo electrónico: pandolfi@bg.fcen.uba.ar   Cuestionario   - Un libro: Cuentos de la Selva de Horacio Quiroga - Una película: Zeitgeist - Un CD : Sueño Stereo de Soda Stereo - Un artista: Alejandro Dolina - Un deporte: buceo - Un color: rojo - Una comida: pescado a la parrilla - Un animal: el quetzal - Una palabra: igualdad - Un número: 4 - Una imagen: mi arribo a Machu Picchu con Fiorella - Un lugar: la selva - Una estación del año: primavera - Un nombre: Santiago - Un hombre: Néstor Carlos Kirchner - Una mujer: Estela Barnes de Carlotto - Un personaje de ficción: Eric Cartman de South Park - Un superhéroe: Superhijitus    ProBiota, Serie Técnica y Didáctica 21(08)-2013 5     Matías Pandolfi con sus sobrinos Delfina y Santiago Etchevers, 2012          ReviewStudies on the reproductive and developmental biology ofCichlasoma dimerus (Percifomes, Cichlidae)MATÍAS PANDOLFI*, MAXIMILIANO M. CÁNEPA, FERNANDO J. MEIJIDE, FELIPE ALONSO, GRACIELA REY VÁZQUEZ,M. CRISTINA MAGGESE AND PAULA G. VISSIODepartamento de Biodiversidad y Biología Experimental. Facultad de Ciencias Exactas y Naturales. Universidad de BuenosAires. Ciudad Universitaria (C1428EHA). Buenos Aires, Argentina.Key words: reproduction, early development, neuroendocrinology, brain, pituitary, teleostsABSTRACT:  Many characteristics of the South American teleost fish Cichlasoma dimerus (body size, easybreeding, undemanding maintenance) make it amenable to laboratory studies. In the last years, many of thefundamental aspects of its reproductive and developmental biology have been addressed in our laboratory.Rather recently, the immunohistochemical localization of pituitary hormones involved in reproduction and inbackground color adaptation has been described in both adult and developing individuals, and the role ofFSH in ovarian differentiation has been established. These findings have been correlated with mapping ofsome of their brain-derived controlling hormones. The latter include brain-derived gonadotropins which wereshown to be active in vitro in the control of pituitary hormone secretions. The emerging picture shows C.dimerus as an interesting species in which many of their basic features have already been investigated andwhich conform a solid platform for comparative studies correlating neurohormones, pituitary hormones andbehavior, from the molecular to the organismic level.BIOCELL2009, 33(1): 1-18ISSN 0327 - 9545PRINTED IN ARGENTINA1. Teleost fishes in physiological and developmentalstudies.Teleost fishes represent the most numerous anddiversified vertebrate group. Though fish physiologyhas been studied for many decades (Ball and Baker,1969; Hoar, 1969; Conlon, 2000; Price et al., 2008),the use of very different species, together with the ideathat differences were more important than similarities,gathered a lot of data, and sometimes non coherent ones.During the last years, however, several researchgroups have put the emphasis in the importance of us-ing teleost fishes not for comparative studies within theclass, but as general vertebrate physiological models,by taking advantage of some of their unique properties.One of these properties is an unusual characteristic ofthe fish nervous system: fish brains can remain aliveand responsive for many hours after removal from theanimal (Teyler et al., 1981). This has allowed research-ers to use intact-brain preparations that have the advan-tage, compared to mammalian brain-slice preparations,of allowing afferent and efferent connections to remainfunctional (Wayne et al., 2005). Another interesting fea-*Address correspondence to: Matías Pandolfi. Departmento deBiodiversidad y Biología Experimental, Facultad de CienciasExactas y Naturales. Universidad de Buenos Aires, CiudadUniversitaria, (C1428EHA) Buenos Aires, ARGENTINA.E-mail: pandolfi@bg.fcen.uba.arReceived: July 17, 2008. Final version received: October 23,2008. Accepted: February 9, 2009.Physiology & Behavior 106 (2012) 612–618Contents lists available at SciVerse ScienceDirectPhysiology & Behaviorj ourna l homepage: www.e lsev ie r .com/ locate /phbDominance hierarchies and social status ascent opportunity: Anticipatory behavioraland physiological adjustments in a Neotropical cichlid ﬁshFelipe Alonso a, Renato Massaaki Honji b, Renata Guimarães Moreira b, Matías Pandolﬁ a,⁎a Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, (C1428EHA) Buenos Aires,Argentinab Departamento de Fisiologia, Instituto de Biociências-USP, Rua do Matão, travessa 14,n.321, sala 220 Cidade Universitária, São Paulo, SP, Brazil⁎ Corresponding author at: Departamento de BiodiverFacultad de Ciencias Exactas y Naturales, Universidad dedad Universitaria, C1428EHA, Ciudad Autónoma de Buentina. Tel.: +54 11 4576 3348; fax: +54 11 4576 3384.E-mail address: pandolﬁ@bg.fcen.uba.ar (M. Pandolﬁ0031-9384/$ – see front matter © 2012 Elsevier Inc. Alldoi:10.1016/j.physbeh.2012.04.003a b s t r a c ta r t i c l e i n f oArticle history:Received 8 August 2011Received in revised form 8 February 2012Accepted 3 April 2012Available online 12 April 2012Keywords:Cichlasoma dimerusAggressive behaviorFemales social hierarchyIn this work we characterized the social hierarchy of non-reproductive individuals of Cichlasoma dimerus(Heckel, 1840), independently for both sexes, and its relationship to the opportunity for social status ascent.Female and male individuals who were located on the top rank of the social hierarchy, ascended in social sta-tus when the opportunity arose, therefore indicating that dominance is directly correlated with social ascentlikelihood. Dominance was positively correlated with size in males but not in females, suggesting for the lat-ter a relationship with intrinsic features such as aggressiveness or personality rather than to body and/orovarian size. Physiological and morphometrical variables related to reproduction, stress and body colorwere measured in non-reproductive ﬁsh and correlated with dominance and social ascent likelihood. Domi-nance was negatively correlated with plasma cortisol levels for both sexes. No correlation with dominancewas found for androgen plasma levels (testosterone and 11-ketotestosterone). No correlation was detectedbetween dominance and the selected morphological and physiological variables measured in females, sug-gesting no reproductive inhibition in this sex at a physiological level and that all females seem to be readyfor reproduction. In contrast, social hierarchy of non-reproductive males was found to be positively correlat-ed with follicle stimulating hormone (FSH) pituitary content levels and gonadosomatic indexes. This suggestsan adaptive mechanism of non reproductive males, adjusting their reproductive investment in relation totheir likelihood for social status ascent, as perceived by their position in the social hierarchy. This likelihoodis translated into a physiological signal through plasma cortisol levels that inhibit gonad investment throughpituitary inhibition of FSH, representing an anticipatory response to the opportunity for social status ascent.© 2012 Elsevier Inc. All rights reserved.1. IntroductionDuring the reproductive season, some species establish a socialdominance hierarchy which determines access to resources and re-production for individuals of the highest rank [1]. Predation or envi-ronmental changes may generate an opportunity for social ascent oflower ranked individuals, allowing them to reproduce. Cichlid ﬁsh(Cichlidae) are a widespread family of Teleost ﬁsh that comprisesthree major monophyletic clades –Malagasy/Indian, African and Neo-tropical [2]. Cichlids have been widely studied in the ﬁeld of socialcontrol of reproduction since they exhibit complex social behaviors,territoriality and parental care of the fry [3]; however most studiedspecies are of African origin: Astatotilapia burtoni (Günther, 1894)and Oreochromis mossambicus (Peters, 1858) [4–9]. In contrast,sidad y Biología Experimental,Buenos Aires, Pabellón 2, Ciu-os Aires, Buenos Aires, Argen-).rights reserved.Neotropical cichlids behavior and physiology is poorly understood al-though they represent a separate clade of more than 60 genera and600 species inhabiting a great diversity of environments and present-ing particular ecological and behavioral traits as a consequence oftheir independent evolution from African cichlids what suggest thatprobably there are considerable differences at the physiological andbehavioral levels between these groups. Rapid physiological andgenomic changes occur during social status ascent in A. burtoni[10–13]. Non-territorial males and animals ascending in social rankshowed an increased growth rate, whereas territorial males and ani-mals descending in social rank slowed their growth rate or evenshrank [14]; changes in the size of neurons involved in the controlof growth (e.g. somatostatin-expressing neurons) were also observed[15]. Differences in reproductive physiology were also found betweenterritorial and non-territorial ﬁsh in this species, probably mediatedby the hormone cortisol [4]. However, subordinate individuals of A.burtoni retain reproductive competence during social suppression[9]. Concordantly, in Cichlasoma dimerus (Heckel, 1840), no reproduc-tive inhibition at the gonadal level was observed in non-reproductiveindividuals [16].ProBiota, Serie Técnica y Didáctica 21(08)-2013 8         Difusión de la ciencia con el  stand: Vida, pasión y muerte en el agua, Feria del Libro, 2013 De izquierda a derecha: la estudiante Agustina Birba, los tesistas Felipe Alonso y Martín Ramallo, y Matías Pandolfi, integrantes del Laboratorio de Neuroendocrinología y  Comportamiento                ProBiota, Serie Técnica y Didáctica 21(08)-2013 9              Visita al Taj Mahal previa al 9no. Simposio Internacional de Fisiología Reproductiva de Peces en Cochin, India, 2011  De izquierda a derecha:  Renato Honji (USP), Matías Pandolfi (UBA), Renata Guimaraes-Moreira(USP) y Fabiana Lo Nostro (UBA)          PrroBii ott a    Serr ii e  Ténii ca  y  Dii dáctt ii ca  21  --   Coll eccii ón  Sembll anzz asII ctt ii oll ógii cas  Arr chii vos  Edii tt ados  01 – Pedro Carriquiriborde. Hugo L. López y Justina Ponte Gómez. 02 – Pablo Agustín Tedesco. Hugo L. López y Justina Ponte Gómez. 03 – Leonardo Ariel Venerus. Hugo L. López y Justina Ponte Gómez. 04 – Alejandra Vanina Volpedo. Hugo L. López y Justina Ponte Gómez. 05 – Cecilia Yanina Di Prinzio. Hugo L. López y Justina Ponte Gómez 06 – Juan Martín Díaz de Astarloa. Hugo L. López y Justina Ponte Gómez 07 – Alejandro Arturo Dománico.  Hugo L. López y Justina Ponte Gómez.  Esta publicación debe citarse:  López, H. L. & J. Ponte Gómez. 2013. Semblanzas Ictiológicas: Matías Pandolfi. ProBiota, FCNyM, UNLP, La Plata, Argentina, Serie Técnica y Didáctica 21(08): 1-11. ISSN 1515-9329.    ProBiota (Programa para el estudio y uso sustentable de la biota austral)  Museo de La  Plata Facultad de Ciencias Naturales y Museo, UNLP Paseo del Bosque s/n, 1900 La Plata, Argentina   Directores  Dr. Hugo L. López hlopez@fcnym.unlp.edu.ar  Dr. Jorge V. Crisci crisci@fcnym.unlp.edu.ar    Versión electrónica, diseño y composición  Justina Ponte Gómez División Zoología Vertebrados Museo de La Plata FCNyM, UNLP jpg_47@yahoo.com.mx   http://ictiologiaargentina.blogspot.com/ http://raulringuelet.blogspot.com.ar/ http://aquacomm.fcla.edu  http://sedici.unlp.edu.ar/  Indizada en la base de datos ASFA C.S.A. 

Semblanzas ictiológicas: Matías Pandolfi

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Fil: López, Hugo Luis. División Zoología Vertebrados; Facultad de Ciencias Naturales y Museo; Universidad Nacional de La PlataFil: Ponte Gómez, Justina. División Zoología Vertebrados; Facultad de Ciencias Naturales y Museo; Universidad Nacional de La Plat

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Semblanzas ictiológicas : Matías Pandolfi

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Semblanzas Ictiológicas: Matías Pandolfi

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