Title: Temporal variation of sex ratio, growth pattern and physiological status of<i>Eutropiichthys vacha</i>(Schilbeidae) in the Ganges River, NW Bangladesh
Abstract: The present study illustrates the first complete temporal variations of sex ratio (SR), length-frequency distributions (LFDs), growth pattern based on length-weight relation (LWR), length-length relationships (LLRs) and physiological status of Eutropiichthys vacha in the Ganges River, Bangladesh. A total of 1386 specimens (male = 652, female = 734) were collected from the fishers catch during January to December, 2016. For each individual, total length (TL), fork length (FL), standard length (SL) and body weight (BW) were measured using digital slide calipers and electronic balance with 0.01 cm and 0.01 g precision. The overall SR differed statistically from the expected 1:1 ratio, although females were greater in percentage throughout the year, except in April. The TL of males and females ranged from 6.2–19.9 cm and 6.5–20.6 cm, respectively. The overall growth pattern was negative allometric for both sexes, though ANCOVA reveals significant difference in LWRs. All LLRs were highly significant with r2 > 0.962. The highest percentage of fatty fish was found in April and March whereas the lowest was in August for both sexes. Finally, these findings will be useful for further studies and to suggest sound policy for the sustainable management of E. vacha in the Ganges River ecosystem.
Publication Year: 2018
Publication Date: 2018-09-24
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 14
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot