Some Aspects of the Biology of Three Species of Puntius (= Barbus) (Pisces, Cyprinidae), Endemic To Sri Lanka

Silva, S.S. De; Kortmulder, K.

doi:10.1163/002829677x00027

Cited by 21 publications

(10 citation statements)

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“…2 The relative important of seven broad groups of food items observed in the guts of cyprinids inhabiting in the Thalayanai stream of Western Ghats, during (a) wet and (b) dry seasons 1999), but consume different categories of food available on the substrate. This variation in feeding habits and resource partitioning among the diverse fish communities is very common in tropical Asian streams (Dudgeon 1999) and similar types of resource utilization patterns have been reported in different streams of tropical Asia (Costa and Fernando 1967;De Silva and Kortmulder 1977;Moyle and Senanayake 1984;Wikramanayake and Moyle 1989). In this study, the feeding habits of these species are clearly segregated among the co-existing species.…”

Section: Discussionsupporting

confidence: 82%

Feeding habit and food partitioning in a stream fish community of Western Ghats, India

Johnson

Arunachalam

2011

Environ Biol Fish

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The diet and feeding ecology of 12 cyprinid fishes were studied in the Thalayanai stream of southern India. The diet of Barbodes sarana, Danio aequipinnatus and Rasbora daniconius were specialized in terrestrial and aquatic insects. Hypselobarbus dobsoni and Garra mullya consumed vegetative matter and unicellular algae as their most important dietary component, respectively. Hypselobarbus curmuca and Hypselobarbus dubius specialized in crustaceans and molluscs. Puntius amphibious, Puntius bimaculatus, Puntius dorsalis, Puntius filamentosus and Puntius tambraparniei fed on variety of food resources (aquatic insects, algae and detritus) and their feeding intake varied between wet to dry seasons. Levin's index of diet breadth showed the broadest diets for P. dorsalis in both seasons, whereas G. mullya had a narrow feeding spectrum in both seasons. Among co-existing species, diet overlaps were substantially low during both wet and dry season. These results suggest that feeding specialization and low diet overlap reduce inter-specific competition, allowing co-existence of these cyprinid fishes in this highly structured stream assemblage.

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Section: Discussionsupporting

confidence: 82%

Feeding habit and food partitioning in a stream fish community of Western Ghats, India

Johnson

Arunachalam

2011

Environ Biol Fish

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“…Fishes were collected by seine from May through July 1986 and immediately preserved in 10% formaldehyde for subsequent dietary and morphometric determinations. Although the collection period consisted of only 3 mo, the diets of the individual species conformed to other dietary determinations (Costa and Fernando 1967, De Silva and Kortmulder 1977, De Silva et a!. 1980, Senanayake 1980, Moyle and Senanayake 1984.…”

Section: Methodsmentioning

confidence: 92%

Ecomorphology and Biogeography of a Tropical Stream Fish Assemblage: Evolution of Assemblage Structure

Wikramanayake¹

1990

Ecology

127

109

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The wet—forest stream fishes of Sri Lanka are segregated in ecological and morphological space. Suites of selected morphological attributes of the fishes were correlated with microhabitat and feeding ecology. Previous studies have shown that these fishes partition resources with pronounced complementarities along niche axes, a pattern consistent with assemblages structured by interspecific competition. Since such competitive interactions may have been significant historically, the speciations and extinctions that have occurred to produce the contemporary assemblages, since the early Pleistocene isolation of wet—forest fish fauna from the mainland fauna, most likely occurred in an arena of interspecific competition. Invasions of the Sri Lankan wet—forest streams by mainland fishes after the initial isolation of the island were also unlikely due to various biogeographic, climatic, and geologic barriers, Thus the data favor the hypothesis that the ecomorphological relationships exhibited by these fishes may be the results of evolutionary adjustments to facilitate resource partitioning, thereby reducing interspecific competition.

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“…After comparing primary and secondary production in a temperate and a tropical lake, Burgis & Dunnn (1978) concluded that the size of fish populations in a tropical lake might well be limited by lack of suitable nursery and breeding areas or predation on juveniles and not by food shortage. Habitat segregation among congeneric tropical freshwater fishes with similar feeding habits is reported for two Astyanax species in Brazil (Arcifa et al, 1991) and three Barbus species in Sri Lanka (De Silva & Kortmulder, 1977).…”

Section: Overlapmentioning

confidence: 99%

Ontogenetic diet shifts and diet overlap among three closely related neotropical armoured catfishes

Mol

1995

Journal of Fish Biology

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Analysis of stomach contents of larvae, juveniles and adults of three closely related armoured catfishes in coastal plain swamps of Suriname, South America, revealed major ontogenetic diet shifts. Larvae or Hoplosternurn littorule. H. thorucntum and CuNicktliJ;.~ culliclithys showed a restricted diet of rotifers and microcrustacea. Diets of juveniles and adults werc more diverse, but large volumes of microcrustacea, aquatic insect larvae and detritus were always present. In all three species dict overlap was especially low between larvae and adults. The proportion of detritus in the stomach was positively related to fish size, which probably reflected the inability of larger size classes L o separate etrectively benthic invertebrate prey from bottom substrata, and not a specialization towards detritivory. Adults showed only minor seasonality in diet composition. and no effect of season on diet breadth. Interspecific diet overlap among larvae, juveniles and adults did not differ significantly from 1 (complete overlap). Lack of food partitioning was probably related to a similar morphology of the three catfishes. Intraspecific between-size class diet overlap was considerably lower than interspecific within-sizc class overlap. It is suggested that large interspecific diet overlap occurred because food was not limiting the populations of these catfish. However, the nest habitats of the three species ditfered.( ' 1995 The Fi.;hrrics Society of the British Isle5

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Some Aspects of the Biology of Three Species of Puntius (= Barbus) (Pisces, Cyprinidae), Endemic To Sri Lanka

Cited by 21 publications

References 0 publications

Feeding habit and food partitioning in a stream fish community of Western Ghats, India

Feeding habit and food partitioning in a stream fish community of Western Ghats, India

Ecomorphology and Biogeography of a Tropical Stream Fish Assemblage: Evolution of Assemblage Structure

Ontogenetic diet shifts and diet overlap among three closely related neotropical armoured catfishes

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