Data/hora: 11/06/2024 08:05:04

Provedor de dados: | 3
País: | Brazil
Título: | Population structure and natural diet of Astyanax cf. paranae Eigenmann 1914 a typical species of neotropical headwaters streams
Autores: | Costa, Matheus Souza; Smith, Welber Senteio.
Data: | 2019-11-07
Ano: | 2019
Palavras-chave: | Biological parameters; Feeding; Ipanema national forest; Natural history; Riparian forest.
Resumo: | This work describes the habits of individuals of the species Astyanax cf. paranae that inhabit Ribeirão do Ferro, a bedside stream. Overall, 92 specimens were analyzed (53 females and 39 males), and the size ranged from class 4.7-5.7 cm to class 10.7-11.7 cm. The females consisted in the larger portion of the samples, except for classes of 4.7-5.7 and 5.7-6.7 cm. The condition factor between males and females (t = 2.1545; p &amp;lt; 0.05) shows distinguished values, with females having higher averages. Fragments of allochthonous insects and plant matter make up the basis of the species' diet. The study showed that the population of A. cf. paranae is predominantly females and have the highest standard for length and weight, which may favor biological diversity and increased larvae and juveniles, maximizing the chance of individuals reaching adulthood. The species prefers an environment with predominance of rocks and logs, which favors shelters. Its diet comes mostly from the riparian forest, with a high dependence on the allochthonous items, thus, these vegetations are very important for maintaining populations of the species.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/45400

10.4025/actascibiolsci.v41i1.45400

Editor: | Universidade Estadual De Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/45400/751375148953
Formato: | application/pdf

Fonte:

Acta Scientiarum. Biological Sciences; Vol 41 (2019): Publicação contínua; e45400

Acta Scientiarum. Biological Sciences; v. 41 (2019): Publicação contínua; e45400

1807-863X

1679-9283

Fonte:

Copyright (c) 2019 Acta Scientiarum. Biological Sciences

https://creativecommons.org/licenses/by/4.0