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Trophic organisation and predator–prey interactions among commercially exploited demersal finfishes in the coastal waters of the southeastern Arabian Sea

Abdurahiman, K.P. ; Nayak, T.H. ; Zacharia, P.U. ; Mohamed, K.S.

Estuarine, coastal and shelf science, 2010-05, Vol.87 (4), p.601-610 [Periódico revisado por pares]

Kidlington: Elsevier Ltd

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Título:
Trophic organisation and predator–prey interactions among commercially exploited demersal finfishes in the coastal waters of the southeastern Arabian Sea
Autor: Abdurahiman, K.P. ; Nayak, T.H. ; Zacharia, P.U. ; Mohamed, K.S.
Assuntos: Acetes indicus ; Agnatha. Pisces ; Animal and plant ecology ; Animal, plant and microbial ecology ; Arabian Sea ; Biological and medical sciences ; Brackish water ecosystems ; Carcharhinus limbatus ; cluster analysis ; Coastal ; Crustaceans ; Cynoglossus macrostomus ; Decapoda ; demersal finfishes ; diet breadth ; Diets ; Epinephelus diacanthus ; Feeding ; Fish ; Fundamental and applied biological sciences. Psychology ; Grammoplites ; Lactarius lactarius ; Leiognathus bindus ; Marine ; Nemipterus japonicus ; Nemipterus mesoprion ; Otolithes cuvieri ; Pampus argenteus ; Predators ; Priacanthus hamrur ; Pseudorhombus arsius ; Rhynchobatus djiddensis ; Shrimps ; southeastern Arabian Sea ; Synecology ; trophic guilds ; trophic level ; Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
É parte de: Estuarine, coastal and shelf science, 2010-05, Vol.87 (4), p.601-610
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
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Descrição: Trophic interactions in commercially exploited demersal finfishes in the southeastern Arabian Sea of India were studied to understand trophic organization with emphasis on ontogenic diet shifts within the marine food web. In total, the contents of 4716 stomachs were examined from which 78 prey items were identified. Crustaceans and fishes were the major prey groups to most of the fishes. Based on cluster analysis of predator feeding similarities and ontogenic diet shift within each predator, four major trophic guilds and many sub-guilds were identified. The first guild ‘detritus feeders’ included all size groups of Cynoglossus macrostomus, Pampus argenteus, Leiognathus bindus and Priacanthus hamrur. Guild two, named ‘Shrimp feeders’, was the largest guild identified and included all size groups of Rhynchobatus djiddensis and Nemipterus mesoprion, medium and large Nemipterus japonicus, P. hamrur and Grammoplites suppositus, small and medium Otolithes cuvieri and small Lactarius lactarius. Guild three, named ‘crab and squilla feeders’, consisted of few predators. The fourth trophic guild, ‘piscivores’, was mainly made up of larger size groups of all predators and all size groups of Pseudorhombus arsius and Carcharhinus limbatus. The mean diet breadth and mean trophic level showed strong correlation with ontogenic diet shift. The mean trophic level varied from 2.2 ± 0.1 in large L. bindus to 4.6 ± 0.2 in large Epinephelus diacanthus and the diet breadth from 1.4 ± 0.3 in medium P. argenteus to 8.3 ± 0.2 in medium N. japonicus. Overall, the present study showed that predators in the ecosystem have a strong feeding preference for the sergestid shrimp Acetes indicus, penaeid shrimps, epibenthic crabs and detritus.
Editor: Kidlington: Elsevier Ltd
Idioma: Inglês

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Trophic organisation and predator–prey interactions among commercially exploited demersal finfishes in the coastal waters of the southeastern Arabian Sea

Abdurahiman, K.P. ; Nayak, T.H. ; Zacharia, P.U. ; Mohamed, K.S.

Kidlington: Elsevier Ltd

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