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First observations on stomachs contents of the blue shark, Prionace glauca, from southwestern equatorial Atlantic



First observations on stomachs contents of the blue shark, Prionace glauca, from southwestern equatorial Atlantic



Revista Brasileira de Biologia 54(2): 195-198



The stomach contents of the blue shark, Prionace glauca, were investigated using longline data, from March to December 1990. In this period 90 blue sharks (32 males and 58 females) were examined. Thirty seven percent of the sampled specimens had empty stomachs and 35% of them were brought on board with their stomachs inverted and protruding from their mouths. Cephalopods and small teleosts were the main food items, occurring in 56% and 36% of the stomachs containing preys, respectively. The cephalopods included both octopods and decapods. The lancet fish, Alepisaurus ferox, was the most frequently encountered fish prey. Other food items included an elasmobranch fish, a decapod crustacean and two sea birds.

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