Status social e metabolismo aeróbico em Apistogramma agassizii e A. hippolytae (Perciformes: Cichlidae)
This study aimed to understand the relationship between social status and aerobic metabolism in species of Apistogramma (Cichlidae) and how environmental differences can affect these relationships. In the first chapter, we evaluated the influence of changes in temperature and oxygen concentration...
| Autor principal: | Kochhann, Daiani |
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| Grau: | Tese |
| Idioma: | por |
| Publicado em: |
Instituto Nacional de Pesquisas da Amazônia - INPA
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/11450 http://lattes.cnpq.br/7757679895456942 |
| Resumo: |
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This study aimed to understand the relationship between social status and aerobic
metabolism in species of Apistogramma (Cichlidae) and how environmental differences
can affect these relationships. In the first chapter, we evaluated the influence of changes
in temperature and oxygen concentration in social interactions of groups of
Apistogramma agassizii. In addition, we assessed how changes in the environmental
parameters influence the aerobic metabolism of this species and how environmental
parameters interact with the physiological ones. There was a reduction in stability of
dominance hierarchy in the high temperature. Aggression levels changed significantly
after the increase in temperature and decrease in oxygen concentration. Dominant fish
from undisturbed environment were the only that ate more than their respective
subordinates. When comparing metabolic rates in relation to social status, dominant fish
had higher metabolic rate than their subordinates only in undisturbed environment. The
second chapter evaluated how differences of habitat complexity influences social
interaction of pairs of males of A. agassizi. In addition, we investigated how habitat
structure influences metabolic rate and how physiology interacts with behaviour in
differently structured enviornments. We observed an increase in biting by dominant fish
at habitat with higher structural enrichment. We observed an increase in metabolic rate
in dominant fish only in enriched habitats. In the third chapter the existence of
dominance hierarchy in the social interactions in natural populations of A. hippolytae at
Dimona and Amanã Reserve was investigated. In addition, we evaluated the influence
of social status in the aerobic metabolism of this species. Groups of A. hippolytae at
Dimona site had higher aggressiveness and feeding rate when compared to Amanã site
groups. We observed that dominant fish have metabolic advantages in both studied
sites; however, in Amanã the most subordinate fish presented aerobic metabolic profile
similar to that of dominant one. Altogether, our results show that social status influences
aerobic metabolism of A. hippolytae and A. agassizii, and that environment affects this
influence. |