Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Comparative feeding ecology of Cardinalfishes (Apogonidae) at Toliara Reef, Madagascar
Frédérich, B.; Michel, L.N.; Zaeytydt, E.; Bolaya, R.L.; Lavitra, T.; Parmentier, E.; Lepoint, G. (2017). Comparative feeding ecology of Cardinalfishes (Apogonidae) at Toliara Reef, Madagascar. Zool. Stud. 56: 10. https://dx.doi.org/10.6620/ZS.2017.56-10
In: Zoological studies. Academia Sinica: Taipei. ISSN 1021-5506; e-ISSN 1810-522X
|  |
| Trefwoorden |
Apogonidae Günther, 1859 [WoRMS]
Marien/Kust |
| Author keywords |
Apogonids; Stable isotopes; Isotopic niche; Diet; Western Indian Ocean |
| Auteurs | | Top |
- Frédérich, B.
- Michel, L.N.
- Zaeytydt, E.
- Bolaya, R.L.
|
- Lavitra, T.
- Parmentier, E.
- Lepoint, G.
|
|
| Abstract |
Despite their importance in coral reef ecosystem function and trophodynamics, the trophic ecology of nocturnal fishes (e.g. Apogonidae, Holocentridae, Pempheridae) is by far less studied than diurnal ones. The Apogonidae (cardinalfishes) include mostly carnivorous species and evidence of trophic niche partitioning among sympatric cardinalfishes is still limited. The present study combines stomach contents and stable isotope analyses to investigate the feeding ecology of an assemblage of eight cardinalfishes from the Great Reef of Toliara (SW Madagascar). δ13C and δ15N of fishes ranged between -17.49‰ and -10.03 ‰ and between 6.28‰ and 10.74‰, respectively. Both stomach contents and stable isotopes showed that they feed on planktonic and benthic animal prey in various proportions. Previous studies were able to group apogonids in different trophic categories but such a discrimination is not obvious here. Large intra-specific variation in the stomach contents and temporal variation in the relative contribution of prey to diet support that all apogonids should be considered as generalist, carnivorous fishes. However the exploration of the isotopic space revealed a clear segregation of isotopic niches among species, suggesting a high level of resource partitioning within the assemblage. According to low inter-specific variation in stomach content compositions, we argue that the differences in isotopic niches could be driven by variation in foraging locations (i.e. microhabitat segregation) and physiology among species. Our temporal datasets demonstrate that the trophic niche partitioning among cardinalfishes and the breadth of their isotopic niches are dynamic and change across time. Factors driving this temporal variation need to be investigated in further studies. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
