Seasonal Dynamics of Feeding Habits of a Cyprinid Fish, Saurogobio dabryi in the Downstream of the Jialing River, China

ABSTRACT This research studied the food composition and feeding rhythm of Saurogobio dabryi in the lower reaches of the Jialing River, aimed to explore the seasonal difference of its feeding habits. Gut contents of 268 S. dabryi in the downstream (Hechuan section) of the Jialing River were collected...

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Bibliographic Details
Published in:Pakistan journal of zoology 2023-10, Vol.55 (5), p.2131
Main Authors: Ma, J., Zhang, F.B., Li, J., Lv, Z.Y., Zhang, C., Mao, L., Zeng, Y.
Format: Article
Language:English
Subjects:
Adaptation
Algae
Animal feeding behavior
Chi-square test
Cluster analysis
Composition
Crustaceans
Cyprinidae
Detritus
Diet
Feeding
Fish
Fishery conservation
Food
Food and nutrition
Food composition
Food sources
Graphical methods
Habits
Hydroelectric power
Methods
Predation
Prey
Rhythm
Rivers
Saurogobio dabryi
Seasonal variations
Similarity
Variance analysis
Zoological research
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Summary:ABSTRACT This research studied the food composition and feeding rhythm of Saurogobio dabryi in the lower reaches of the Jialing River, aimed to explore the seasonal difference of its feeding habits. Gut contents of 268 S. dabryi in the downstream (Hechuan section) of the Jialing River were collected seasonally from September 2015 to August 2016. The feeding habits of S. dabryi were studied by microscopic examination, analysis of similarity, and the Amundsen graphical method. A total of 26 food categories were identified, among which algae and organic detritus were the dominant food source for S. dabryi. Animal prey contributed relatively low proportions to the food of S. dabryi. Seasonal variations of food composition of S. dabryi were significant (P
ISSN:0030-9923
0030-9923
DOI:10.17582/journal.pjz/20220119100124