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Sazonalidade no pardal doméstico (Passer domesticus)
Paperback
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ISBN10: 6208611024
ISBN13: 9786208611026
Publisher: Edicoes Nosso Conhecimento
Published: Jan 30 2025
Pages: 96
Weight: 0.31
Height: 0.23 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786208611026
Publisher: Edicoes Nosso Conhecimento
Published: Jan 30 2025
Pages: 96
Weight: 0.31
Height: 0.23 Width: 6.00 Depth: 9.00
Language: Portuguese
A sazonalidade é uma adaptação obrigatória para a sobrevivência de muitas espécies. As aves são sazonais. As aves adultas apresentam um ciclo sazonal em várias funções, incluindo as cores do bico e da plumagem, a muda, a engorda do corpo, a carga parasitária, a massa corporal, o crescimento e desenvolvimento das gónadas, os nÃveis hormonais, o sistema imunitário, a produção de canções, a construção de ninhos, os cuidados parentais e a migração. A maioria dos eventos sazonais está centrada na reprodução sazonal. É de grande importância estudar a forma como os acontecimentos a curto e a longo prazo de um organismo são programados para ocorrerem na estação mais favorável do ano. Num ambiente sazonal, os ciclos claro-escuro (CL) são a variável mais consistente numa determinada latitude. Várias caraterÃsticas do ciclo natural de luz-escuridão, como a amplitude do ciclo de luz-escuridão, a duração do fotoperÃodo e a duração do crepúsculo, variam sistematicamente com a estação do ano e, por conseguinte, fornecem uma pista fiável aos organismos para se adaptarem à s mudanças no ambiente. Este livro inclui investigações sobre a sazonalidade do pardal doméstico em relação ao ambiente fotoperiódico em Lucknow.
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