Efeito nulo do provisionamento antropogênico de alimento e da densidade populacional no comportamento agressivo de um ciclídeo territorial: um estudo de caso

Autores

  • Rayan Pereira Universidade de Brasília
  • Eduardo Bessa Universidade de Barsília

DOI:

https://doi.org/10.5007/2175-7925.2022.e84551

Palavras-chave:

Meaningful learning, physics teaching, reduced models, flat articulated systems.

Resumo

A oferta de alimentos para peixes é uma atividade de lazer muito comum, especialmente em atrações turísticas, causando impactos que ainda são pouco compreendidos. Existem muitas espécies de peixes territoriais para as quais a disponibilidade de energia pode limitar a agressividade e o crescimento populacional. Nosso estudo de caso avaliou se o provisionamento de alimentos e o adensamento populacional resultante modificam o comportamento agressivo em um ciclídeo territorial, a tilápia do Congo (Tilapia rendalli). Comparamos a agressividade entre uma população que recebe grandes quantidades de alimento e tem alta densidade e uma não alimentada e de baixa densidade. A agressividade foi igual entre grupos provisionados e não provisionados, exceto quando oferecemos alimentos, o que estimulava a agressão na área não provisionada. A oferta de alimento por humanos e a densidade reduziram a área dos ninhos, mas não aumentaram a agressividade, sugerindo uma possível habituação à presença de conspecíficos e uma redução da agressividade competitiva.

Biografia do Autor

Rayan Pereira, Universidade de Brasília

Rayan Amorim Pereira é graduado em Biologia. Ele tem interesse em bem-estar animal tanto aplicado a animais mantidos em Zoológico quanto a animais silvestres sob o impacto de conflitos com humanos.

Eduardo Bessa, Universidade de Barsília

Professor efetivo da Universidade de Brasília com mestrado em Ciências Biológicas (Zoologia) pela USP (2004) e Doutorado em Biologia Animal (Ecologia e Comportamento) pelo IBILCE-UNESP (2013). Tem experiência na área de Zoologia, com ênfase em Comportamento Animal, atuando principalmente em comportamento reprodutivo e impactos do turismo de natureza sobre a fauna. Também tem interesse em divulgação científica, redigindo atualmente o blog Ciência à Bessa na rede Scienceblogs Brasil. É membro do comitê educacional da Animal Behavior Society e conselheiro da Sociedade Brasileira de Etologia.

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Publicado

2022-02-24

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