2008
DOI: 10.1590/s1679-62252008000400013
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Abstract: Serrasalmus brandtii and Pygocentrus piraya are two common piranha species in the Barragem da Pedra Reservoir, rio de Contas. In order to identify the diet composition of the two species, monthly collections were performed at three sites between May 2001 and April 2003, using two gill nets of different mesh sizes cast at the beginning of the day and visited after 6, 12 and 24 h. The qualitative composition of the diet was analyzed by determining the frequency of occurrence. Comparison of the two species showed… Show more

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Cited by 14 publications
(2 citation statements)
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“…Species of Pygocentrus are widely introduced outside their native ranges and the environment impacts are specially related to predation of native species and damage of fishing nets and other fishes [44,45]. Herein, sequences of Pygocentrus introduced in the Philippines [20] were included in the analyses and results indicate that they belong to the Amazonas lineage.…”
Section: Discussionmentioning
confidence: 99%
“…Species of Pygocentrus are widely introduced outside their native ranges and the environment impacts are specially related to predation of native species and damage of fishing nets and other fishes [44,45]. Herein, sequences of Pygocentrus introduced in the Philippines [20] were included in the analyses and results indicate that they belong to the Amazonas lineage.…”
Section: Discussionmentioning
confidence: 99%
“…M. gaiero was collected sympatrically with two other Anostomidae: Leporinus bahiensis and M. brinco . The new species occur sympatrically with Pygocentrus piraya and Serrasalmus brandti , two species of piranha native to the Rio São Francisco basin and accidently introduced in the Rio de Contas river about 20 years ago (Trindade and Jucá‐Chagas, ). A study on the diet of these two serrasalmids shows that fins are among their most consumed items (Trindade and Jucá‐Chagas, ), which explains the presence of damaged fins in freshly collected specimens of the new species (Figure ).…”
Section: Taxonomymentioning
confidence: 98%