Spatiotemporal Variation in Fulton and Clark Indexes of Mystus albolineatus in the Vietnamese Mekong Delta https://doi.org/10.12982/VIS.2024.080
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Abstract
This study assessed the fluctuations of two key indexes - Fulton and Clark indexes - in evaluating the nutritional status and health of Mystus albolineatus at two different sampling sites within the Hau River basin, Mekong Delta. A total of 597 specimens comprising 307 females and 290 males were collected from Cai Rang (Can Tho) and Long Phu (Soc Trang) from January to December (2023). The results indicated that both indexes were not influenced by sex or sampling site but varied significantly according to season and month. The Fulton index was significantly higher during the dry season (1.53±0.03 SE) compared to the wet season (1.35±0.04 SE, F=14.06, p<0.001). Similarly, the Clark index was significantly higher during the dry season (0.84±0.02 SE) compared to the wet season (0.67±0.02 SE, F=30.94, p<0.001). This suggests a better nutritional status during the dry season for this species. The findings played important information regarding the nutritional status and health of Mystus albolineatus, contributing to managing and conserving fishery resources in the Mekong Delta.
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