Evidence for dynamic resource partitioning between two sympatric reef shark species within the British Indian Ocean Territory.
J Fish Biol
; 94(4): 680-685, 2019 Apr.
Article
em En
| MEDLINE
| ID: mdl-30784087
ABSTRACT
Stable-isotope analyses (δ13 C, δ15 N and δ34 S) of multiple tissues (fin, muscle, red blood cells and plasma), revealed ontogenetic shifts in resource use by grey reef sharks Carcharhinus amblyrhynchos and resource partitioning with silvertip sharks Carcharhinus albimarginatus within the British Indian Ocean Territory marine protected area (MPA). Resource partitioning varied temporally, with C. albimarginatus feeding on more pelagic prey during October to January, potentially attributable to an influx of pelagic prey from outside the MPA at that time. Reef sharks may therefore be affected by processes outside an MPA, even if the sharks do not leave the MPA.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Tubarões
/
Comportamento Animal
Limite:
Animals
País/Região como assunto:
Africa
Idioma:
En
Revista:
J Fish Biol
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Reino Unido