Factors affecting the local abundance of two anemonefishes (Amphiprion frenatus and A. perideraion) around a semi-closed bay in Puerto Galera, the Philippines

Many marine organisms disperse or migrate among habitats, which affects their abundance patterns at individual local habitats. To clarify the factors affecting the distribution patterns of two anemonefishes (Amphiprion frenatus and A. perideraion), we measured the habitat patch size (anemone size),...

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Bibliographic Details
Published in:Hydrobiologia 2014-07, Vol.733 (1), p.63-69
Main Authors: Sato, Masaaki, Honda, Kentaro, Bolisay, Klenthon O, Nakamura, Yohei, Fortes, Miguel D, Nakaoka, Masahiro
Format: Article
Language:English
Subjects:
Amphiprion
Amphiprion frenatus
Animal populations
Biodiversity in Asian Coastal Waters
Biomedical and Life Sciences
Coastal waters
Coral reefs
Dispersal
Distribution patterns
Ecology
Fish
Freshwater & Marine Ecology
Habitats
interspecific competition
Life Sciences
Marine
Marine organisms
Niche (Ecology)
Population density
Reefs
Resource availability
surface water level
Water depth
Zoology
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Summary:Many marine organisms disperse or migrate among habitats, which affects their abundance patterns at individual local habitats. To clarify the factors affecting the distribution patterns of two anemonefishes (Amphiprion frenatus and A. perideraion), we measured the habitat patch size (anemone size), patch isolation (mean distance from other anemones), presence/absence of other anemonefish species, depth, and abundance of the two anemonefishes at each anemone around a semi-closed bay (up to 3.7 km) in Puerto Galera, the Philippines. We assumed that local abundance increases with habitat size and decreases with patch isolation because of greater resource availability and reduced rates of recruitment from other patches. Local abundance of A. frenatus was related to habitat size and the presence of other anemonefish species, whereas that of A. perideraion was affected by the presence of other anemonefish species and water depth. Interspecific competition and/or niche differentiation of habitat can explain the negative relationship between the local abundance of the target species and other anemonefish. Patch isolation was not significant for both species probably because the dispersal rate was not directly proportional to the geographic distance between patches at our study site.
ISSN:0018-8158
1573-5117
DOI:10.1007/s10750-013-1758-4