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Foraging habits of reef fishes associated with mangroves and seagrass beds in a Caribbean lagoon: a stable isotope approach
Vaslet, A.; Bouchon-Navaro, Y.; Harmelin-Vivien, M.; Lepoint, G.; Louis, M.; Bouchon, C. (2015). Foraging habits of reef fishes associated with mangroves and seagrass beds in a Caribbean lagoon: a stable isotope approach. Cienc. Mar. 41(3): 217-232. https://dx.doi.org/10.7773/cm.v41i3.2494
In: Ciencias Marinas. Universidad Autónoma de Baja California: Ensenada, BS. ISSN 0185-3880
Peer reviewed article  

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Trefwoorden
Author keywords
    mangrove; seagrass; fish; stable isotopes; STAR

Auteurs  Top 
  • Vaslet, A.
  • Bouchon-Navaro, Y.
  • Harmelin-Vivien, M.
  • Lepoint, G.
  • Louis, M.
  • Bouchon, C.

Abstract
    Mangroves and seagrass beds represent suitable fish habitats as nurseries or feeding areas. This study was conducted in a Caribbean lagoon to assess the foraging habits of juvenile transient reef fishes in these two habitats. Twelve fish species were sampled in coastal mangroves, an offshore mangrove islet, and a seagrass bed site, and stable isotope analyses were performed on fishes and their prey items. The STAR mixing model indicated that transient fishes from both mangroves and seagrass beds derived most of their food from seagrass beds and their associated epiphytic community. Only a few species including planktivores (Harengula clupeola, Anchoa lyolepis) and carnivores (Centropomus undecimalis and small specimens of Ocyurus chrysurus) presented depleted carbon values, showing reliance on mangrove prey in their diets. Mangrove-derived organic matter contributed marginally to the diet of transient fishes, which relied more on seagrass food sources. Thus, mangroves seem to function more as refuge than feeding habitats for juvenile transient fishes.

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