Food Habits and Morphological Changes during Ontogeny in Three Serrasalmin Fish Species of the Venezuelan Floodplains

Machado-Allison, Antonio; Garcia, Carmen

doi:10.2307/1444905

Cited by 36 publications

(32 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Muitos autores utilizam a categoria "escamas" separada das demais (MACHADO-ALLISON & GARCIA, 1986;NICO & TAPHORN, 1988;SAZIMA & MACHADO, 1990). Neste trabalho entretanto, as escamas foram incluídas na categoria "restos de peixes", conforme AGOSTINHO et al (2003).…”

Section: Discussionunclassified

“…Os juvenis preferem nadadeiras de peixes, microcrustáceos, insetos e, em algumas espécies, sementes (SAZIMA & ZAMPROGNO, 1985;MACHADO-ALLISON & GARCIA, 1986; NICO & TAPHORN, BEHR & SIGNOR 1988;WINEMILLER, 1989;NICO, 1990;POMPEU, 1999;ALVIM et al, 1999). Os adultos ingerem principalmente pedaços de peixes, pequenos peixes inteiros e escamas (NICO & TAPHORN, 1988;MAGALHÃES et al, 1990;BISTONI & HARO, 1995;ALMEIDA et al, 1998;POMPEU, 1999;AGOSTINHO et al, 2003;OLIVEIRA et al, 2004).…”

unclassified

See 1 more Smart Citation

Distribuição e alimentação de duas espécies simpátricas de piranhas Serrasalmus maculatus e Pygocentrus nattereri (Characidae, Serrasalminae) do rio Ibicuí, Rio Grande do Sul, Brasil

Behr

Signor

2008

Iheringia, Sér. Zool.

View full text Add to dashboard Cite

ABSTRACT. Distribution and feeding of two sympatric species of piranhas Serrasalmus maculatus and Pygocentrus nattereri (Characidae, Serrasalminae) of the Ibicuí river, State of Rio Grande do Sul, Brazil. Two species of piranhas occur in the Ibicuí River, one of the main tributaries of the Uruguay River in southern Brazil, Serrasalmus maculatus Kner, 1858 and Pygocentrus nattereri Kner, 1858. In order to analyze the distribution and feeding habits of these species we conducted collecting expeditions from December 1999 to January 2002, using a variety of fishing gears in three sites along the river, both in lentic and lotic habitats. A total of 203 individuals of S. maculatus and 86 of P. nattereri were caught, mostly in lentic habitats and closer to the Uruguay River, were P. nattereri seems to be more concentrated. The number of individuals captured at different times did not show variation in P. nattereri while the number of S. maculatus captured at mid-night was the highest. Young S. maculatus (2-4 cm standard length) fed mainly on fish fins and insects. Fish was the predominant item in remaining size classes for both species, with intra-and inter-specific overlap in larger classes (8-16 cm and >16 cm standard length). No differences in the repletion index between day time or habitats, were observed for the two species.

show abstract

Section: Discussionunclassified

unclassified

Distribuição e alimentação de duas espécies simpátricas de piranhas Serrasalmus maculatus e Pygocentrus nattereri (Characidae, Serrasalminae) do rio Ibicuí, Rio Grande do Sul, Brasil

Behr

Signor

2008

Iheringia, Sér. Zool.

View full text Add to dashboard Cite

show abstract

“…Plant remains were described as a food item of piranha species in the Amazon (Goulding, 1980) and in Venezuela (Machado-Allison & Garcia, 1986). The ingestion of plant material by the piranha species studied by Nico & Taphorn (1988) was considered accidental, i.e., thought to occur secondarily, along with intended prey items.…”

Section: Discussionmentioning

confidence: 99%

“…Ontogenetic diet shifts have been demonstrated for piscivorous (Machado-Allison & Garcia, 1986;Nico & Taphorn, 1988;Winemiller, 1989) and scaleeating (Hahn et al, 2000) tropical fish. Early life stages of these fishes commonly present a diet based on microcrustaceans and insects.…”

Section: Discussionmentioning

confidence: 99%

“…They have piscivorous habits (Nico & Taphorn, 1988;Braga, 1975;Northcote et al, 1986;Bistoni & Haro, 1995) and are known to be mutilating predators, feeding on fish fins, scales, and other body parts of their prey (Goulding, 1980;Leão et al, 1991;Machado-Allison & Garcia, 1986;Nico & Taphorn, 1988;Northcote et al, 1987). The body growth of these fish is followed by morphological changes (MachadoAllison & Garcia, 1986) that influence their food habits (Winemiller, 1989), accounting for the different trophic levels occupied by them during their life history.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Diet shifts related to body size of the pirambeba Serrasalmus brandtii Lütken, 1875 (Osteichthyes, Serrasalminae) in the Cajuru Reservoir, São Francisco River Basin, Brazil

et al. 2004

View full text Add to dashboard Cite

This study aimed to identify shifts in the Serrasalmus brandtii Lütken, 1875 diet related to body size. Specimens were collected from April 1992 to January 1993 at the Cajuru Reservoir, in the Pará River, São Francisco River Basin, by seining the shore with nets of nylon, 1 mm opening, and with gill nets. Stomach contents of 152 individuals measuring 15-192 mm SL were examined. Food items were identified and weighed separately. For qualitative analysis, the frequency of occurrence method was used. The relative importance of each food component was determined based on the alimentary index (IA i ). The frequencies of occurrence data were subjected to cluster analysis using the Canberra coefficient of dissimilarity and UPGMA as the cluster method. Distinctive gradual changes in food habits, associated with body size, were identified in this species. The smaller individuals fed predominantly on microcrustaceans and insect larvae. The intermediate size classes ingested insects, fish fins, fish scales, and chunks of fish flesh, in this order of importance. For the larger pirambebas, fish was the most abundant food category identified, followed by insects.Key words: Serrasalmus brandtii, body size, trophic ecology, reservoir, similarity. RESUMOModificações na dieta da pirambeba Serrasalmus brandtii Lütken, 1875 (Osteichthyes, Serrasalminae), em relação ao tamanho corpóreo no reservatório Cajuru, bacia do rio São Francisco, Brasil

show abstract

Allometry and developmental integration of body growth in a piranha, Pygocentrus nattereri (Teleostei: Ostariophysi)

Zelditch

Fink

1995

Journal of Morphology

View full text Add to dashboard Cite

Piranhas, like many teleosts, change their diets on both ontogenetic and phylogenetic time scales. Prior studies have suggested that pervasive morphological changes in body form on a phylogenetic time scale may be related to changes in diet, but previous reports have found little shape change in piranhas on an ontogenetic time scale. We re-examine the post-transformational allometry of body form in one piranha, Pygocentrus nattereri (Kner), using the method of thin-plate splines decomposed by their partial warps. We find substantial evidence of allometry, primarily elongation of the mid-body relative to the more anterior and posterior regions, elongation of the postorbital and nape regions relative to the more anterior head and posterior body, and deepening of the head relative to the body. In addition to these pervasive changes throughout the body, there are some that are more localized, especially elongation of the postorbital region relative to eye diameter and snout, and an even more localized elongation of the snout relative to eye diameter. Initial dietary transitions are associated with changes in head and jaw proportions, but rates of shape change decelerate through growth, so that the final transition to a diet increasingly dominated by small whole fish appears associated with change largely in overall body size. © 1995 Wiley-Liss, Inc.

show abstract

Food Habits and Morphological Changes during Ontogeny in Three Serrasalmin Fish Species of the Venezuelan Floodplains

Cited by 36 publications

References 0 publications

Distribuição e alimentação de duas espécies simpátricas de piranhas Serrasalmus maculatus e Pygocentrus nattereri (Characidae, Serrasalminae) do rio Ibicuí, Rio Grande do Sul, Brasil

Distribuição e alimentação de duas espécies simpátricas de piranhas Serrasalmus maculatus e Pygocentrus nattereri (Characidae, Serrasalminae) do rio Ibicuí, Rio Grande do Sul, Brasil

Diet shifts related to body size of the pirambeba Serrasalmus brandtii Lütken, 1875 (Osteichthyes, Serrasalminae) in the Cajuru Reservoir, São Francisco River Basin, Brazil

Allometry and developmental integration of body growth in a piranha, Pygocentrus nattereri (Teleostei: Ostariophysi)

Contact Info

Product

Resources

About