Entomonematodos como agentes de control biológico de mosquitos en Argentina

Fil: Achinelly, María Fernanda. Centro de Estudios en Parasitología y Vectores (CEPAVE). Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Micieli, María Victoria. Centro de Estudios en Parasitología y Vectores (CEPAVE). Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; Argentin

Estudios referentes a la utilización del nemátodo <i>Strelkovimermis spiculatus</i> Poinar & Camino, 1986 (Nematoda: mermithidae) como agente de control biológico de culícidos (Diptera: culicidae)

El objetivo de este trabajo fue evaluar la potencialidad del nemátodo Strelkovimermis spiculatus Poinar & Camino, 1986, como biocontrolador de culícidos en condiciones naturales. El área de estudio abarcó diferentes sitios de cría de culícidos situados en los partidos de Berazategui, Berisso, Ensenada y La Plata, Provincia de Buenos Aires. La búsqueda del nemátodo S. spiculatus se realizó en poblaciones naturales de culícidos, en ambientes permanentes y temporarios, artificiales y naturales. El nemátodo se halló parasitando larvas de Culex chidesteri Dyar, C. dolosus Lynch Arribalzaga, C. maxi Dyar, Ochlerotatus albifasciatus (Macquart), Psorophora ciliata (Fabricius) y P. cyanescens (Coquillet). Los mayores índices de prevalencia se alcanzaron en O. albifasciatus, en cuyas poblaciones se observaron epizootias naturales cercanas a 90%. Cuando se evaluaron los culícidos Aedes aegypti Linné y Culex pipiens Linné como hospedadores alternativos del nemátodo S. spiculatus, se observó que los valores de infección variaron entre 72 y 100%, para las diferentes dosis de preparásitos por hospedador utilizadas (3, 5, 8 y 10:1 L2/hospedador) en ambos culícidos. Si bien se alcanzaron elevados porcentajes de infección en ambos hospedadores, A. aegypti resultó mejor hospedador alternativo, debido a su período de desarrollo relativamente más breve respecto de C. pipiens y la facilidad para mantenerlo en el laboratorio.Facultad de Ciencias Naturales y Muse

A new Nematoda (Thelastomatidae) parasite of Coleoptera larvae from Argentina

Leidynema saltense n. sp. (Nematoda, Thelastomatidae), a parasite of larvae of Cyclocephala modesta (Coleoptera, Scarabaeidae) from Salta province, Argentina, is described and illustrated. This species is characterised by the presence of an intestinal caecum in the female, and four pairs of genital papillae in the male, one pair of which is large, ventral and pre-anal and three pairs are subventral and postanal.Centro de Estudios Parasitológicos y de Vectore

Uma nova espécie do gênero Cranifera Kloss, 1960 (Thelastomatidae, Nematoda) parasitando larvas de Scarabaeidae (Coleoptera) da Argentina

The presente study describes and ilustrates Cranifera robustum n. sp. (Nematoda, Thelastomathidae), a parasite of Cyclocephala signaticollis larvaes (Coleoptera, Scarabaeidae), from Buenos Aires, Argentina. Cranifera robustum n. sp. ischaracterized by its striated cuticle trough all the body, proeminent near the anterior end, its lack of intestine caecum, itssmall stomach, a long oesophagus, with thin irregular walls in male and regular ones in female, with a round valvatedbasal bulb. Its nerve ring is located in the middle of the oesophagus corpus, and the excretory pore is located at the base ofthe oesophagus, in both sexes. The female presents a not protruding vulva, located right behind the longitudinal middleline of the body, a short vagina, two ovaries didelphic, amphidelphic, and ellipsoidal oviles, short and conical appendagetail. The male presentes one spicule slightly curved, its gubernaculum is absent and its genital papillae is arranged in threepairs: two large ventral preanal pairs and one ventral postanal pair.O presente estudo descreve e ilustra Cranifera robustum sp. n. (Nematoda, Thelastomathidae), parasita de Cyclocephala signaticollis (Coleoptera, Scarabaeidae), de Buenos Aires, Argentina. Cranifera robustum sp. n. caracteriza-se por possuir cutícula estriada ao longo de todo o corpo, sendo mais proeminentemente na extremidade anterior. Seu intestino não possui cego, o estoma é pequeno, o esôfago é grande, com paredes finas e irregulares, no macho, e regulares, na fêmea, com bulbo basal basal arredondado e válvulas. O anel nervoso se econtra no meio do esôfago e o poro excretor, na base do esófago, em ambos os sexos. A fêmea apresenta genitála não protuberante, situada pouco atrás da linha média longotudinal do corpo, vagina curta, dois ovários didélficos, anfidélficos, e óvulos elípticos, apêndice caudal curto e cônico. O macho possui uma espícula levemente curvada, gubernáculo ausente e suas papilas genitais se dispõem em três pares: dois pares pré-anias, ventrais e grandes, e um par pós-anal e ventral.Centro de Estudios Parasitológicos y de Vectore

Estudios referentes a la utilización del nemátodo Strelkovimermis spiculatus Poinar & Camino, 1986 [Nematoda: Mermithidae] como agente de control biológico de culícidos [Diptera: Culicidae]

Tesis presentada para optar al Grado de Doctor en Ciencias NaturalesFil: Achinelly, María Fernanda. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentin

A new species of Blatticola schwenk, 1926 (Oxyurida, Thelastomatidae) a parasite of Anurogryllus muticus (De Geer, 1773) (Orthoptera, Gryllidae) from Argentina

Blatticola cristovata n. sp. (Oxyurida, Thelastomatidae) a parasite of the cricket Anurogryllus muticus (De Geer, 1773) (Orthoptera, Gryllidae) from Argentina, is described and illustrated. This is the first species of the genus Blatticola found parasitizing cricket. This new species is characterized in females by having the cuticle annulated through the body length, the mouth opening is subtriangular and surrounded by eight cephalic papillae, the stoma is short with three pairs placed in two rows of cuticular sclerotised plates, amphids in small pore shaped, oesophagus is divided into three parts, anterior cylindrical corpus, isthmus distinct, and basal bulb valved, the nerve ring is situated around the middle of corpus, the intestine is wide broad anteriorly, oval eggs, smooth shell, with a straight side, and the other side with a band running longitudinally. Males with one pair of preanal, one pair of adanal and two pairs of postanal papillae, and the tail appendage short, conical and pointed.Centro de Estudios Parasitológicos y de Vectore

A new Thelastomatidae, Oryctophila bonaerensis sp. nov. (Nematoda) parasite of curculionid beetle larvae of Prosalbus rufus (Coleoptera: Curculionidae) from Argentina

Oryctophila bonaerensis sp. nov. parasitizing curculionid beetle larvae from Argentina, is described and illustrated. The species is characterized by a prominent genital cone and a short and filiform tail appendage. Female with vulva at midlenght of body, vagina long, S-shaped, monodelphic, opistodelphic. Male with one club-shaped spicule. Genital papillae arranged as follows: one pair of large preanal papillae and three pairs of postanal papillae of various sizes: a pair of medium sized papillae is immediately posterior to the anus, followed by a pair of large papillae, and one pair of small papillae at the base of the caudal appendage.Centro de Estudios Parasitológicos y de Vectore

Uma nova espécie do gênero Cranifera Kloss, 1960 (Thelastomatidae, Nematoda) parasitando larvas de Scarabaeidae (Coleoptera) da Argentina

The presente study describes and ilustrates Cranifera robustum n. sp. (Nematoda, Thelastomathidae), a parasite of Cyclocephala signaticollis larvaes (Coleoptera, Scarabaeidae), from Buenos Aires, Argentina. Cranifera robustum n. sp. ischaracterized by its striated cuticle trough all the body, proeminent near the anterior end, its lack of intestine caecum, itssmall stomach, a long oesophagus, with thin irregular walls in male and regular ones in female, with a round valvatedbasal bulb. Its nerve ring is located in the middle of the oesophagus corpus, and the excretory pore is located at the base ofthe oesophagus, in both sexes. The female presents a not protruding vulva, located right behind the longitudinal middleline of the body, a short vagina, two ovaries didelphic, amphidelphic, and ellipsoidal oviles, short and conical appendagetail. The male presentes one spicule slightly curved, its gubernaculum is absent and its genital papillae is arranged in threepairs: two large ventral preanal pairs and one ventral postanal pair.O presente estudo descreve e ilustra Cranifera robustum sp. n. (Nematoda, Thelastomathidae), parasita de Cyclocephala signaticollis (Coleoptera, Scarabaeidae), de Buenos Aires, Argentina. Cranifera robustum sp. n. caracteriza-se por possuir cutícula estriada ao longo de todo o corpo, sendo mais proeminentemente na extremidade anterior. Seu intestino não possui cego, o estoma é pequeno, o esôfago é grande, com paredes finas e irregulares, no macho, e regulares, na fêmea, com bulbo basal basal arredondado e válvulas. O anel nervoso se econtra no meio do esôfago e o poro excretor, na base do esófago, em ambos os sexos. A fêmea apresenta genitála não protuberante, situada pouco atrás da linha média longotudinal do corpo, vagina curta, dois ovários didélficos, anfidélficos, e óvulos elípticos, apêndice caudal curto e cônico. O macho possui uma espícula levemente curvada, gubernáculo ausente e suas papilas genitais se dispõem em três pares: dois pares pré-anias, ventrais e grandes, e um par pós-anal e ventral.Centro de Estudios Parasitológicos y de Vectore

A new Thelastomatidae, Oryctophila bonaerensis sp. nov. (Nematoda) parasite of curculionid beetle larvae of Prosalbus rufus (Coleoptera: Curculionidae) from Argentina

Oryctophila bonaerensis sp. nov. parasitizing curculionid beetle larvae from Argentina, is described and illustrated. The species is characterized by a prominent genital cone and a short and filiform tail appendage. Female with vulva at midlenght of body, vagina long, S-shaped, monodelphic, opistodelphic. Male with one club-shaped spicule. Genital papillae arranged as follows: one pair of large preanal papillae and three pairs of postanal papillae of various sizes: a pair of medium sized papillae is immediately posterior to the anus, followed by a pair of large papillae, and one pair of small papillae at the base of the caudal appendage.Centro de Estudios Parasitológicos y de Vectore

A new Nematoda (Thelastomatidae) parasite of Coleoptera larvae from Argentina

Leidynema saltense n. sp. (Nematoda, Thelastomatidae), a parasite of larvae of Cyclocephala modesta (Coleoptera, Scarabaeidae) from Salta province, Argentina, is described and illustrated. This species is characterised by the presence of an intestinal caecum in the female, and four pairs of genital papillae in the male, one pair of which is large, ventral and pre-anal and three pairs are subventral and postanal.Centro de Estudios Parasitológicos y de Vectore