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Bioaccumulation of trace elements in pelagic fish from the Western Indian Ocean.
Trace elements were analyzed in fish of commercial interest to determine their importance in marine systems of the Western Indian Ocean and their bioaccumulation patterns. The results are equivalentExpand
Mercury content in commercial pelagic fish and its risk assessment in the Western Indian Ocean.
The muscular Hg levels presented here suggest that consumers of fish originating from the Western Indian Ocean should limit themselves to one Swordfish based meal per week, or one fish meal a day if they choose to eat tuna or Common Dolphinfish. Expand
Forage fauna in the diet of three large pelagic fishes (lancetfish, swordfish and yellowfin tuna) in the western equatorial Indian Ocean
Novel data is provided on micronekton fauna that is poorly documented in the western Indian Ocean: 67 families and 84 species of prey were recovered in the stomach contents, and results indicate the presence of large resources of pelagic crustaceans that play a primary role in the epipelagic food chain. Expand
Isotopic evidence of distinct feeding ecologies and movement patterns in two migratory predators (yellowfin tuna and swordfish) of the western Indian Ocean
The latitudinal effect by differences in nitrogen dynamics existing at the base of the food web and propagating along the food chain up to top predators is explained and suggests that yellowfin and swordfish populations exhibit a relatively unexpected resident behaviour at the temporal scale of their muscle tissue turnover. Expand
Foraging strategy of a top predator in tropical waters: great frigatebirds in the Mozambique Channel
The results of the study indicate that the strategy of frigatebirds is based on wide ranging foraging directed toward scarce prey patches that are encountered irregularly, and are not predictable in exact location at a coarse scale. Expand
Feeding Partitioning among Tuna Taken in Surface and Mid-water Layers: The Case of Yellowfin ( Thunnus albacares ) and Bigeye ( T. obesus ) in the Western Tropical Indian Ocean
The trophic relations of two apex predators, yellowfin and bigeye tuna (Thunnus albacares and T. obesus), and their prey were investigated in the western tropical Indian Ocean to reflect their ability to catch the prey, and their vertical distribution. Expand
Feeding ecology and ontogenetic dietary shift of yellowstripe goatfish Mulloidichthys flavolineatus (Mullidae) at Reunion Island, SW Indian Ocean
Results from combined stomach contents (prey volume) and stable isotope analyses suggested a dominant contribution of polychaetes (macrofauna) in the diet of yellowstripe goatfish Mulloidichthys flavolineatus, possibly through selective feeding; Conversely, on the basis of prey volume andstable isotope data, meiofauna did not feature significantly in the diets despite their high abundance in stomachs. Expand
Foraging habitats of the seabird community of Europa Island (Mozambique Channel)
It is demonstrated that the winter-breeding seabird species of Europa Island tend to forage in productive waters in association with other marine predators when possible, and frigatebirds favour association with flocks of red-footed boobies when possible. Expand
Comparative foraging ecology and ecological niche of a superabundant tropical seabird: the sooty tern Sterna fuscata in the southwest Indian Ocean
The stable-carbon and nitrogen isotope values in blood confirm the differences observed in dietary analysis, and demonstrate different feeding strategies between colonies, and suggest a significant shift from summer to wintering habitat for birds from Juan de Nova. Expand
Stable isotope patterns in micronekton from the Mozambique Channel
The results showed that mesoscale features did not really influence the isotopic signatures of the sampled organisms, although cyclonic eddies can occasionally impact the nitrogen signatures of micronekton, and suggested that pelagic production in the Mozambique Channel could be partly supported by the transport and export of inorganic and organic particles from the Moz Zambican coast toward the offshore area. Expand