Feeding ecology and trophic level estimation of Giant Catfish (Netuma thalassina) in the northern Omen Sea

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Alimohammadi Mina; VALINASSAB TOORAJ; Ramezani Fard Ehsan; Ehteshamei Fariborz

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Journal: JOURNAL OF ANIMAL ENVIRONMENT Year:2020 | Volume:11 | Issue:4 Page(s): 147-154

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Title

Feeding ecology and trophic level estimation of Giant Catfish (Netuma thalassina) in the northern Omen Sea

Author(s)

Alimohammadi Mina | VALINASSAB TOORAJ | Ramezani Fard Ehsan | Ehteshamei Fariborz | Issue Writer Certificate

Keywords

Netuma thalassinaQ1

ConsumptionQ1

Trophic levelQ1

Omen seaQ1

Abstract

Due to study the food regime of Giant Catfish (Netuma thalassina), a total of 198 specimens were collected seasonally from February to October 2017 in the Omen sea waters. In this study the frequency of occurrence of prey, feeding intensity index, Vacant stomach index (VI), the mean Trophic levels and the rate of food Consumption were calculated. Total six major taxonomic categories were identified in the stomach contents of this species and were weighted including Arthropods (Crustaceans, higher Crustaceans), Mollusks (Cephalopods), Echinoderms, Nematods, Sea plants (Sea weeds) and Teleostei. Crustaceans were estimated as the most abundant prey item (%44. 71). Teleostei (FP=%55. 55) was constituated as the main and Portunidae (FP=%25. 64) and Xanthidae(FP=%13. 67) as the secondary foods. Carangidae family (FP=%8. 54) was the random food. The results showed that the highest intensity of feeding occurs in Spring and lowest in fall. The mean Trophic level for Giant Catfish in the studied area was estimated 3. 61.

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APA: Copy

Alimohammadi, Mina, VALINASSAB, TOORAJ, Ramezani Fard, Ehsan, & Ehteshamei, Fariborz. (2020). Feeding ecology and trophic level estimation of Giant Catfish (Netuma thalassina) in the northern Omen Sea. JOURNAL OF ANIMAL ENVIRONMENT, 11(4 ), 147-154. SID. https://sid.ir/paper/206558/en

Vancouver: Copy

Alimohammadi Mina, VALINASSAB TOORAJ, Ramezani Fard Ehsan, Ehteshamei Fariborz. Feeding ecology and trophic level estimation of Giant Catfish (Netuma thalassina) in the northern Omen Sea. JOURNAL OF ANIMAL ENVIRONMENT[Internet]. 2020;11(4 ):147-154. Available from: https://sid.ir/paper/206558/en

IEEE: Copy

Mina Alimohammadi, TOORAJ VALINASSAB, Ehsan Ramezani Fard, and Fariborz Ehteshamei, “Feeding ecology and trophic level estimation of Giant Catfish (Netuma thalassina) in the northern Omen Sea,” JOURNAL OF ANIMAL ENVIRONMENT, vol. 11, no. 4 , pp. 147–154, 2020, [Online]. Available: https://sid.ir/paper/206558/en

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