CAPÍTULO 2 – Papel da cor do quelípodo e carapaça na preferência de
2. OBJETIVOS, HIPÓTESES E PREDIÇÕES
3.9. Considerações finais
Caranguejos chama-marés possuem interações sociais bastante complexas. Orientados visualmente, sua comunicação intra e interspecifica é baseada no movimento, no tamanho, e na coloração de seus quelípodos, além da coloração da sua carapaça e das características dos ornamentos construídos na entrada de suas tocas. Aliado à facilidade de manuseio e controle experimental, e devido à sua complexidade de comportamentos sociais, são excelentes modelos de estudo de seleção sexual, predação, visão de cores e reconhecimento interespecífico.
Até o momento, a maioria dos trabalhos com chama-marés têm testado as variáveis de estudo separadamente, buscando compreender o efeito dos traços comportamentais e morfológicos individualmente, com algumas exceções (Mowles et al., 2018; Takeshita et al., 2018). Isso faz sentido quando não
sabemos o que influencia o contexto social desses animais e, de fato, certas variáveis individuais (e.g. cor, padrão de coloração, formato e brilho), tanto da carapaça de machos e fêmeas, quanto do quelípodos hipertrofiados dos machos, ainda precisam ser melhor exploradas. No entanto, alguns padrões gerais da sinalização visual de caranguejos chama-marés já podem ser percebidos, como o tamanho do quelípodo, a taxa de acenos, e a cor. Como sugere Innes et al (2018), estudos futuros devem tratar da combinação e do efeito das diversas variáveis sobre a percepção dos indivíduos, como, por exemplo, o efeito da interação da cor e do movimento.
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