Results 131 to 140 of about 2,568 (172)

Chromosomes of Leptodactylidae (Amphibia anura)

Experientia, 1968
Se estudiaron los cariotipos de 23 especies de la familia sudamericana Leptodactylidae (anfibios anuros), no hallandose cromosomas sexuales citologicamente diferenciados.
N, Brum-Zorrilla, F A, Saez
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Diploidization inEleutherodactylus (Leptodactylidae-amphibia)

Experientia, 1974
El contenido de DNA deE. binotatus (2n=22) es cerca de cuatro veces mayor que el deE. guentheri (2n=22) yE. parvus (2n=22). Ese aumento drastico podria ser resultado de duplicationes intersticiales y/o poliploidia, con translocaciones multiples.
M L, Beçak, W, Beçak
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Sperm morphology of Batrachyla (Anura: Leptodactylidae)

Amphibia-Reptilia, 1989
Abstract The structure of immature and mature sperm of the three species of Batrachyla were compared by using smears for light microscopy and ultrathin sections for transmission electron microscopy. Minor differences in length and some ultrastructural details support the notion that B. antartandica and B, taeniata are more closely related to
Orlando Garrido, Emilio Pugin, Boris Jorquera   +2 more
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Karyotypes of Leptodactylidae Anurans

Journal of Herpetology, 1972
Karyotypes of 8 species of Leptodactylidae amphibians were studied. They constitute two groups with 2n=22 and 2n=26 chromosomes. Centric fusions and pericentric inversions are the most important mechanisms of karyotype differentiation among these species. Cytophotometric measurements of 7 species showed a gradual increase of DNA content. * * *
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Tadpole of Odontophrynus moratoi (Anura, Leptodactylidae)

Journal of Herpetology, 1996
Departamento de Zoologia Universidade Estadual Paulista, Caixa Postal 136, CEP 15054-000, Sao Jose do Rio ...
De Rossa-Feres, Denise C., Jim, Jorge
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Evolution of macroglands and defensive mechanisms in Leiuperinae (Anura: Leptodactylidae)

Zoological Journal of the Linnean Society, 2020
Abstract Anurans show a wide variety of anti-predator mechanisms, and the species of the Neotropical clade Leiuperinae display several of them. Most species of Edalorhina, Physalaemus and Pleurodema show eyespots, hidden bright colours, macroglands in a inguinal/lumbar position, defensive behaviours and/or chemical defence.
Daiana Paola Ferraro, Martín Oscar Pereyra, Pascual Emilio Topa, Julián Faivovich   +3 more
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The Tadpole of Physalaemus albonotatus (Anura: Leptodactylidae)

Journal of Herpetology, 2004
Abstract We describe the tadpole of Physalaemus albonotatus (Anura, Leptodactylidae), from specimens collected from northeastern Argentina. The distinguishing characteristics (Stage 36) are (1) labial tooth row formula: 2(2)/3(1); (2) rostral gap about 2.5 times greater than mental gap; (3) body length of 10.00 mm and total length of 24.20 mm; and (4 ...
Arturo I. Kehr, Eduardo F. Schaefer, Marta I. Duré   +2 more
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Embryonic Mortality in Pseudophryne (Anura: Leptodactylidae)

Copeia, 1976
. 1972b. The developmental biology of annual fishes. II. Naturally occurring dispersion and reaggregation of blastomeres during the development of annual fish eggs. J. Exp. Zool. 182:169-200. 67. Fundulus, p. 113-122. In: Methods evelopmental biol gy. F Wilt and N. Wessels s.). Thomas Y. Crowell Co., New York. r s, J. P. 1967. Annual fishe , p. 123-137.
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New chromosome numbers in Australian Leptodactylidae (Amphibia, Salientia)

Experientia, 1974
Fra i Leptodactylidi Australiani,Cyclorana alboguttatus ha 2n=26 come le forme piu generalizzate della famiglia, mentre alcune specie diLimnodynastes hanno 2n=22; specie di altri 5 generi hanno 2n=24. Fra questi ultimi, il problematicoRheobatrachus, completamente acquatico, possiede alcuni microcromosomi come i membri piu primitivi dell'ordine.
A, Morescalchi, G J, Ingram
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Description of the tadpole of Leptodactylus vastus (Anura: Leptodactylidae)

Zootaxa, 2007
The Neotropical frog Leptodactylus vastus belongs to the L. pentadactylus group, a group that currently contains 14 species, and of which nine tadpoles have been described. The tadpoles of L. vastus described here are generally much smaller than tadpoles of the other species described. The oral disk of L.
Vieira, Washington Luiz Da Silva, Santana, Gindomar Gomes, Vieira, Kleber Da Silva   +2 more
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