Food and feeding habits of the introduced common carp (Cyprinus carpio L. 1758) in Lake Ardibo, Ethiopia.

IF 3.4 3区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Heliyon Pub Date : 2025-02-10 eCollection Date: 2025-02-28 DOI:10.1016/j.heliyon.2025.e42596

Tilahun Ayalew, Marishet Teshome, Degsera Aemro

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Abstract

The study was conducted to investigate the food and feeding habits of Cyprinus carpio, in Lake Ardibo, Ethiopia during dry (February-March) and wet (July-August) months in 2023. Specimens were collected by gillnets of various stretched mesh sizes. The gut contents were analyzed using frequency of occurrences and volumetric methods. A total of 915 specimens were collected; of which 605 (66.12 %) guts contained food. The most frequently occurring prey items were (72.72 %), phytoplankton (66.77 %), detritus (66.77 %), and macrophyte (39 %). Volumetrically, zooplankton (36.27 %), phytoplankton (31.41 %), macrophyte (15.08 %), and detritus (14.81 %) were most important. Frequency occurrences of phytoplankton and zooplankton varied significantly $(X^{2} test, p < 0.05$ ) between dry and wet months. The volumetric contribution of phytoplankton, zooplankton, macrophytes, and detritus varied significantly (U test, p < 0.05) in dry and wet months. Schoner Diet Overlap Index revealed there were no significant dietary shifts between juveniles and adults. Based on the result of gut contents; C. carpio showed omnivorous feeding behavior. This investigation is important to understanding the prey-predator relationship and conserving the prey types for C. carpio optimum production.

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埃塞俄比亚阿迪博湖引进的鲤鱼（Cyprinus carpio L. 1758）的食物和摄食习性。

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来源期刊

Heliyon MULTIDISCIPLINARY SCIENCES-

CiteScore

4.50

自引率

2.50%

发文量

2793

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