DIMORFISMO SEXUAL, REPRODUCCIÓN Y BIOLOGÍA ALIMENTARIA DE Helicops angulatus (LINNAEUS, 1758) (COLUBRIDAE: HYDROPSINI) EN LA AMAZONIA ORIENTAL, BRASIL

Autores/as

  • Maria Cristina dos Santos Costa Laboratório de Ecologia e Zoologia de Vertebrados, Instituto de Ciências Biológicas, Universidade Federal do Pará. Caixa Posta 419, CEP: 66075-110, Belém, Pará, Brazil. Programa de Pós-Graduação em Zoologia, Universidade Federal do Pará e Museu Paraense Emílio Goeldi, Caixa Posta 419, CEP: 66075-110, Belém, Pará, Brazil.
  • Pedro Santos Abe Empresa Brasileira de Infraestrutura Aeroportuária. CEP: 64.006-010, Teresina, Piauí, Brazil.
  • Luiz Paulo Printes Albarelli Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis, Caixa Postal 09566, CEP: 66087-441, Belém, Pará, Brazil.
  • Ana Lúcia da Costa Prudente Coordenação de Zoologia, Museu Paraense Emílio Goeldi. Caixa Posta 399, CEP: 66077-830, Belém, Pará, Brazil. Programa de Pós-Graduação em Zoologia, Universidade Federal do Pará e Museu Paraense Emílio Goeldi, Caixa Posta 419, CEP: 66075-110, Belém, Pará, Brazil.
  • Leandra Cardoso Pinheiro Campus Universitário do Marajó-Soure, Universidade Federal do Pará. CEP: 68870-000, Soure, Pará, Brazil.
  • Youszef Oliveira da Cunha Bitar Campus Universitário do Marajó-Soure, Universidade Federal do Pará. CEP: 68870-000, Soure, Pará, Brazil.
  • Gleomar Fabiano Maschio Instituto de Ciências Biológicas, Educação à Distância, Universidade Federal do Pará. Caixa Posta 419, CEP: 66075-110, Belém, Pará, Brazil. Programa de Pós-Graduação em Zoologia, Universidade Federal do Pará e Museu Paraense Emílio Goeldi, Caixa Posta 419, CEP: 66075-110, Belém, Pará, Brazil.

DOI:

https://doi.org/10.26462/31.1.1

Palabras clave:

Biología, Dieta, Neotropical, Serpiente de agua, Reproducción, Oviparidad

Resumen

Describimos los rasgos de la historia natural de la serpiente de agua de bandas marrones Helicops angulatus de la Amazonia oriental brasilera, una de las áreas más amenazadas de la Amazonia. Registramos información morfométrica, hábitos de alimentación y estrategias reproductivas de 97 hembras maduras, 58 machos maduros y 40 juveniles. Las hembras son más grandes que los machos, aunque los machos tienen mayor largo de cola. Hembras y machos maduran con diferentes tamaños, los machos maduran con tamaños más pequeños. Observamos la presencia de folículos y huevos secundarios durante todo el año. Sin embargo, encontramos dos picos reproductivos, en julio y octubre, correspondientes a la estación seca en la región amazónica. La dieta consiste principalmente en peces, seguida de ranas que utilizan cuerpos de agua para reproducirse. La mayoría de las presas fueron ingeridas de cabeza (82.35%), posiblemente para disminuir el riesgo de lesiones durante la captura e ingestión. Encontramos una relación positiva entre la longitud total de la presa y la longitud hocico-respiradero de las serpientes. En comparación con otras especies, H. angulatus ingiere presas proporcionalmente más grandes (22-44% de la longitud del hocico-respiradero de las serpientes), probablemente optimizando la ganancia de energía.

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Publicado

2022-01-27

Cómo citar

COSTA, M. C. dos S.; ABE, P. S.; PRINTES ALBARELLI, L. P.; PRUDENTE, A. L. da C.; PINHEIRO, L. C.; BITAR, Y. O. da C.; MASCHIO, G. F. DIMORFISMO SEXUAL, REPRODUCCIÓN Y BIOLOGÍA ALIMENTARIA DE Helicops angulatus (LINNAEUS, 1758) (COLUBRIDAE: HYDROPSINI) EN LA AMAZONIA ORIENTAL, BRASIL. Boletín de la Sociedad Zoológica del Uruguay, [S. l.], v. 31, n. 1, p. e31.1.1, 2022. DOI: 10.26462/31.1.1. Disponível em: http://szu.org.uy/journal/index.php/Bol_SZU/article/view/175. Acesso em: 28 mar. 2024.

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