REGISTROS SOBRESALIENTES DE MAMÍFEROS DEL ESTADO DE GUERRERO, MÉXICO

Information on geographic distribution, habitat, measurements, and reproductive condition of five species of mammals from Guerrero, Mexico, is provided. Two species are new records for the State (Nyctinomops femorosaccus and Sigmodon leucotis), one is the second record (Spermophilus variegatus variegatus), one is the third record (Nyctinomops macrotis), and one is the fourth record (Herpailurus yagouaroundi tolteca)

Dos nuevos registros de alimentación de Quiscalus Mexicanus Y Cyanocorax Sanblasianus en la costa de chamela, Jalisco, México

Information over the feeding habits of neotropical birds have been relatively few documented, this is the first report in México over the depredation of the mole crabs (Emerita spp.) by the Great-tailed Grackle (Quiscalus mexicanus) and for Ruddy-ground Dove (Columbina talpacoti) by San Blas Jay (Cyanocorax sanblasianus), in the coast of Chamela, Jalisco, México.

Ácaros parásitos de roedores de Playa de Oro, Colima, México

We report mites of rodents from Playa de Oro, Colima, Mexico. The genera of rodents sampled were: Heteromys pictus, Heteromys spectabilis, Baiomys musculus, Nyctomys sumichrasti, Oryzomys couesi, Oryzomys melanotis, Osgoodomys banderanus, Reithrodontomys fulvescens, and Sigmodon mascotensis. We recorded species of mites belonging to the families Laelapidae, Macronyssidae,Listrophoridae, and Myocoptidae that are on new hosts, whereas others are notable range extensions. Specimens collected represent first records from Mexico of Lepidoglyphus hylandi, Laelaps oryzomydis,and Prolistrophorus bakeri.Se reportan ácaros ectoparásitos en roedores colectados durante un estudio ecológico en Playa de Oro, en el estado de Colima, México. Los roedores revisados fueron: Heteromys pictus, Heteromys spectabilis, Baiomys musculus, Nyctomys sumichrasti, Oryzomys couesi, Oryzomys melanotis, Osgoodomys banderanus, Reithrodontomys fulvescens y Sigmodon mascotensis. Se registra la presencia de varias especies de ácaros de las familias Laelapidae, Macronyssidae, Listrophoridae y Myocoptidae en nuevos huéspedes y de algunas más se amplía su distribución. Se registra por primera vez para México a Lepidoglyphus hylandi, Laelaps oryzomydis y Prolistrophorus bakeri

REGISTROS DE MURCIÉLAGOS PARA EL ESTADO DE GUERRERO, MÉXICO

Information on geographic distribution, habitat, measurements, and reproductive condition of nine species of bats from Guerrero, Mexico, is provided. Four species are the second records for the State (Choeroniscus godmani, Myotis auriculus apache, Myotis thysanodes aztecus and Nyctinomops femorosaccus), three are the third record (Musonycteris harrisoni, Chiroderma salvini scopaeum and Enchisthenes hartii), and two are the fourth record (Hylonycteris underwoodi minor and Myotis californicus mexicanus)Se aporta información sobre la distribución, hábitat, medidas y condición reproductiva de nueve especies de murciélagos del estado de Guerrero, México. Cuatro especies representan el segundo registro para el estado (Choeroniscus godmani, Myotis auriculus apache, Myotis thysanodes aztecus y Nyctinomops femorosaccus), tres representan el tercer registro (Musonycteris harrisoni, Chiroderma salvini scopaeum y Enchisthenes hartii), y dos son el cuarto registro (Hylonycteris underwoodi minor y Myotis californicus mexicanus)

Mamíferos pequeños. Manual de técnicas de captura, preparación, preservación y estudio

En México, el estudio formal de los mamíferos se ha realizado por investigadores nacionales y extranjeros desde hace más de 100 años. Sin embargo, este conocimiento es aún restringido en los centros de investigación y universidades estatales, debido, entre otras razones, a la centralización de la información en el Distrito Federal. Así pues, uno de los principales objetivos de este libro es el de difundir algunas técnicas básicas para la captura, preservación, preparación y estudio de los mamíferos pequeños entre los estudiantes interesados en su conocimiento formal y que no cuenten con un asesor especializado

Speed in flight of common vampire bats (Desmodus rotundus)

Flight speeds of adult common vampire bats (Desmodus rotundus) were investigated in Colima, Mexico, during 2005. Individuals were captured in a small abandoned irrigation tunnel and transported to a nearby flyway (simulated cave passage) constructed in forested habitat. Using stopwatches, rates of travel were measured over a known distance. Males averaged 13.82 km/h (range 9.6 to 27.3 km/h; n = 18) and females 13.36 km/h (range 7.2 to 23.4 km/h; n = 29). Flight speeds of males and females were not significantly different. Contrary to some previous studies, no significant correlation was found between length of forearm and flight speed. Our findings provide the first report of flight speeds for D. rotundus

Flight speeds of four species of Neotropical bats

Flight speeds of Davy\u27s naked-backed bat (Pteronotus davyi), Wagner\u27s mustached bat (P. personatus), Parnell\u27s mustached bat (P. parnellii), and Peter\u27s leaf-chinned bat (Mormoops megalophylla) were studied in Colima, Mexico, during January 2000. Bats were assessed in a simulated cave passage cleared in a dense thorn forest. Rates of travel over a known distance were measured using stopwatches. Individual flight speeds varied from 7.4 (female P. davyi) to 30.6 km/h (male M. megalophylla); mean flight speeds ranged from 11.3 (male P. davyi) to 19.1 km/h (female P. parnellii). There was a positive correlation between mean forearm length and mean flight speed. Larger bats flew faster than smaller ones. Results of this investigation provide the first report of flight speed for female P. davyi (13.1 km/h) and extend our knowledge concerning the flight speeds of other taxa studied

Flight speeds of three species of Neotropical bats: Glossophaga soricina, Natalus stramineus, and Carollia subrufa

Flight speeds of Pallas\u27s long-tongued bat (Glossophaga soricina), the Mexican funnel-eared bat (Natalus stramineus), and the gray short-tailed bat (Carollia subrufa) were measured in Colima, Mexico, during January 2006. Bats from an abandoned mine tunnel were transported to a nearby simulated flyway, where speeds were determined over a known distance. For G soricina, average speeds for 26 males and 14 females were 4.85 and 4.80 m/s, respectively (P \u3e 0.05), which are similar to those reported by other investigators. Averages for N. stramineus were 2.84 m/s for 40 males and 2.39 m/s for 23 females, values that were statistically different (P \u3c 0.05) despite the fact that body masses for the sexes were similar. For C. subrufa, three males and three females averaged 3.67 and 3.52 m/s, respectively. Speeds were unrelated to body mass for any of the species. Speeds for N. stramineus and C. subrufa are the first reported, whereas those for G. soricina are the first recorded under near-field conditions. © Museum and Institute of Zoology PAS