RITMOS ENDÓCRINOS E COMPORTAMENTAIS DIÁRIOS EM MAMÍFEROS E AVES SELVAGENS

Autores

  • Erika Fruhvald
  • Camila Nascimento Luba
  • Flávia Caroline Destro
  • Cinthia Rio Branco Silva
  • João Carlos Pinheiro Ferreira

Palavras-chave:

fotoperíodo, melatonina, glicocorticoide

Resumo

O ciclo noite-dia, temperatura, umidade do ar, presença de predadores e disponibilidade de alimentos obriga que os seres vivos a possuir ritmos diários para acompanhar essas mudanças ambientais. Além desses fatores ambientais, o relógio biológico também é regulado por hormônios como a melatonina e os glicocorticoides, estes, influenciados pelo fotoperíodo. Os fatores ambientais e endócrinos ajudam a modelar o comportamento. A secreção de melatonina é estimulada pela ausência de luz, é o principal hormônio responsável pelo sono. Os glicocorticoides são secretados no começo da fase ativa a fim de disponibilizar energia, aumentando a glicemia, para o início das atividades diárias. Fatores sazonais podem alterar o padrão de excreção desses hormônios, a fim de alterar a atividade comportamental. O objetivo dessa revisão foi apresentar os principais componentes endócrinos, que controlam ou participam do controle dos ritmos diários e como estes influenciam o comportamento dos animais.

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Publicado

2023-03-27

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1.
Fruhvald E, Luba CN, Destro FC, Silva CRB, Ferreira JCP. RITMOS ENDÓCRINOS E COMPORTAMENTAIS DIÁRIOS EM MAMÍFEROS E AVES SELVAGENS. RVZ [Internet]. 27º de março de 2023 [citado 3º de outubro de 2024];21(2):252-9. Disponível em: https://rvz.emnuvens.com.br/rvz/article/view/1346

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