RESILIENCE OF THE SHORTNOSE GUITARFISH (Zapteryx brevirostris): COMPLETE COMPENSATORY GAIN, HEMATOLOGY AND HISTOPATHOLOGY

Authors

  • Veronica TAKATSUKA Instituto de Pesca, Programa de Pós-graduação
  • Ana Paula dos SANTOS Instituto de Pesca, Programa de Pós-graduação
  • Susy Hermes de SOUZA Universidade Federal do Rio Grande do Sul (UFRGS), Setor de Patologia Veterinária,
  • Luciana SONNE Universidade Federal do Rio Grande do Sul (UFRGS), Setor de Patologia Veterinária,
  • Venâncio Guedes de AZEVEDO Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Pesca, Núcleo de Pesquisa e Desenvolvimento do Litoral Norte http://orcid.org/0000-0002-5157-8254 (unauthenticated)
  • Eduardo Gomes SANCHES Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Instituto de Pesca, Núcleo de Pesquisa e Desenvolvimento do Litoral Norte http://orcid.org/0000-0001-9976-9271 (unauthenticated)

DOI:

https://doi.org/10.20950/1678-2305.2019.45.2.355

Keywords:

blood parameters, histology, nutrition, zootechnical performance

Abstract

Compensatory gain has been used to evaluate the plasticity of species, in adverse situations such as food deprivation. The aim of the present study was to identify the type of compensatory gain achieved by the shortnose guitarfish (Zapteryx brevirostris), in situations of reduction of food resources. Three treatments were used: seven days of food deprivation and fourteen days of refeeding (T7x14); fourteen days of food deprivation and fourteen days of refeeding (T14x14); and feeding every day (TControl). Zootechnical performance, blood samples and histological samples were evaluated. We demonstrated that this species presented complete compensatory gain and that some blood parameters and histological alterations were associated with fasting.

Downloads

Published

2019-03-27

Issue

Vol. 45 No. 2 (2019): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article

Most read articles by the same author(s)

1 2 > >>