2023
DOI: 10.3390/fishes8070335
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Seasonal Variation in the Epibenthic Feeding Habits of Hilsa Shad (Tenualosa ilisha) in the Upper Meghna River Estuary, Bangladesh

Abstract: Seasonal changes in feeding habits of hilsa (Tenualosa ilisha) were studied monthly in 2019 in the upper Meghna estuary, Bangladesh, through gut content analyses. Tychoplanktonic diatoms followed by copepods were abundant in all months and size groups of hilsa. The inverse relationship between niche breadth and relative length of the gut revealed hilsa consume a variety of food at their early stages while their feeding habit changes towards diatoms during the adult stage with the development of gill rakers. Yo… Show more

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Cited by 4 publications
(3 citation statements)
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“…During individual fish development, changes occur in its food intake and digestive organs (Wootton, 1998). Many studies have shown that as fish grow and develop, their feeding habits are generally transformed (Graeb et al, 2005;Yan et al, 2011;Huo et al, 2014;Su et al, 2015;Sarker et al, 2023). Different sizes of fish have different food preferences (different prey types and sizes), which are related to the strategy of predation (Graeb et al, 2005).…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…During individual fish development, changes occur in its food intake and digestive organs (Wootton, 1998). Many studies have shown that as fish grow and develop, their feeding habits are generally transformed (Graeb et al, 2005;Yan et al, 2011;Huo et al, 2014;Su et al, 2015;Sarker et al, 2023). Different sizes of fish have different food preferences (different prey types and sizes), which are related to the strategy of predation (Graeb et al, 2005).…”
Section: Discussionmentioning
confidence: 99%
“…The stomach content analysis is a traditional method for studying fish feeding, and it is also the most direct and effective. It can accurately determine specific types of diet and is widely used in studies of fish feeding ecology (Yan et al, 2011;Huo et al, 2014;Ma et al, 2014;Sui et al, 2021;Sarker et al, 2023).…”
Section: Introductionmentioning
confidence: 99%
“…According to a previous study, hilsa fry (20-40 mm) consume copepods, diatoms, Daphnia, and ostracods, while younger hilsa (up to 100 mm) feed on insects, small crustaceans, and polyzoa [9]. Hilsa feeding intensity was highest from January to March and lowest from June to November, and it was observed that hilsa shad eat on the riverbed and move along the bottom zone [9,10]. Understanding the food sources, feeding habits, and feeding habitats of different fish species is important for their effective management and utilization [4].…”
Section: Introductionmentioning
confidence: 92%