Spawning ecology of the Saint Paul's Gregory Stegastes sanctipauli, a damselfish endemic to the remote St Peter and St Paul's Archipelago

We studied the spawning ecology of Stegastes sanctipauli, a damselfish endemic to the small and remote St Peter and St Paul's Archipelago (Brazil), aiming to determine the main correlates of reproductive success, as inferred from rates of egg losses along a spawning season. New clutches appeare...

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Bibliographic Details
Published in:Journal of fish biology 2023-08, Vol.103 (2), p.357-366
Main Authors: Alves, Aline Cristina, Ferreira, Carlos Eduardo Leite, Souza Rosa, Ricardo, Pinheiro, Hudson Tercio, Francini‐Filho, Ronaldo Bastos
Format: Article
Language:English
Subjects:
Adults
agonistic interaction
Algae
Archipelagoes
Breeding success
Cannibalism
Ecology
egg predation
Eggs
Food
Food resources
Hatching
Interspecific relationships
Marine fishes
moon phase
Moon phases
Nests
oceanic island
Predation
Predators
Reproduction
reproductive behaviour
Spawning
Spawning seasons
Stegastes sanctipauli
Turf
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Summary:We studied the spawning ecology of Stegastes sanctipauli, a damselfish endemic to the small and remote St Peter and St Paul's Archipelago (Brazil), aiming to determine the main correlates of reproductive success, as inferred from rates of egg losses along a spawning season. New clutches appeared mostly in the last quarter moon, when egg predation intensified. Predation by heterospecifics, particularly Halichoeres radiatus (Linnaeus, 1758), accounted for most egg losses, while filial cannibalism showed negligible influence. Predation pressure was highest for larger nests with higher initial density of eggs. Hatching of eggs occurred close to the new moon (i.e., ~5 days after spawning). Most nests occur in shallow reefs (
ISSN:0022-1112
1095-8649
DOI:10.1111/jfb.15452