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dc.contributor.authorYogi, D.S.
dc.contributor.authorNaik, Akshay
dc.contributor.authorYadav, Ranjana
dc.contributor.authorDesai, Aniket
dc.contributor.authorNanajkar, M.
dc.date.accessioned2024-03-31
dc.date.accessioned2024-09-12T11:56:27Z
dc.date.available2024-01-08
dc.date.available2024-09-12T11:56:27Z
dc.date.issued2024
dc.identifier.citationEnvironmental Science and Pollution Research, vol.31(6); 2024; 9183-9196
dc.identifier.issn1614-7499
dc.identifier.otherhttps://link.springer.com/article/10.1007/s11356-023-31749-1
dc.identifier.urihttps://doi.org/10.1007/S11356-023-31749-1
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9230
dc.descriptionIF(JCR2023) = 5.8
dc.description.abstractBenthic predatory catfishes are voracious and opportunistic predators and can easily shift their diet according to the availability of prey. In this study, feeding ecology of catfishes from two adjacent habitats of an estuarine bay is compared. The lower bay was relatively pristine as compared to the upper bay and was represented by two families of catfishes Plotosidae and Ariidae, while the upper bay represented only ariid catfishes. Gut content analysis revealed that catfish predators from lower bay consumed conventional prey like teleosts and benthic invertebrates with a linear pattern of ontogenetic dietary shift. Plicofollis dussumieri and Plotosus canius occupied the position of top predators in the lower bay and were specialized feeders. Other predators like Plotosus lineatus, Arius arius, Arius jella, and Arius maculatus were generalist feeders occupying the position of mesopredators. However, in the upper bay, the catfish predators represented by Arius maculatus, Arius jella, and Arius arius predominantly fed on human discarded food. The easily available human food in the form of chicken, corn, and rice as noted from the investigated guts shows altered trophic guilds of ariid catfishes wherein only mid to large-sized catfish community was noted in this bay. A distinct "trophic switch" altered the trophic function from predation to scavenging which was observed in their feeding behavior. The anthropogenic impact in the form of unmanaged organic waste alters the role of predatory catfishes thereby restructuring the food web that may lead to unknown changes in the estuarine benthic ecosystems resulting in reduced ecosystem services.
dc.languageen
dc.publisherSpringer
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.title"Trophic switch" by catfish community from predation to scavenging modulated by human food discard in an estuarine bay
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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