
%0 Journal Article
%A Salini, JP 
%A Blaber, SJM 
%A Brewer, DT 
%T Diets of sharks from estuaries and adjacent waters of the North-eastern Gulf of Carpentaria, Australia
%J Marine and Freshwater Research
%D 1992/02/01
%V 43
%N 1
%P 87-96
%K 
%R https://doi.org/10.1071/MF9920087
%U https://www.publish.csiro.au/paper/MF9920087 
%X Sharks were collected over 2 years (six field trips) from the offshore prawn trawling grounds in  Albatross Bay (7-45 m depth), from shallow (< 5 m) nearshore waters, and from the adjacent  inshore waters of the Embley River estuary. Stomachs from 11 shark species were collected  and analysed gravimetrically (% dry weight). Four species (Carcharhinus cautus, C. dussumieri,  C. tilstoni and Rhizoprionodon acutus) were represented in all three regions. Seven general food  categories (Mollusca, Penaeidae, Brachyura, Stomatopoda, Other Crustacea, Teleostei and Other)  were used to describe their diets. Nearly all sharks were primarily piscivorous, and the teleost diet  is discussed in detail. Hemigaleus microstoma was not piscivorous and cephalopods represented  94.7% of its diet. Teleostei constituted less than 70% of the diet for three other species:  C. amblyrhynchos offshore (64.3% Teleostei, 18.6% Penaeidae, 11.6% Mollusca), C. dussumieri  offshore (52.5% Teleostei, 21.8% Stomatopoda, 10.1% Penaeidae), and R. acutus nearshore  (59.3% Teleostei, 17.6% Cephalopoda, 10.3% Brachyura). Offshore, there was a strong correlation  between estimates of consumed prey biomass and of trawled prey biomass, suggesting that these  sharks feed in a density-dependent manner. 
