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- Title
Morphometric and Meristic Characteristics of the Asian Stinging Catfish Heteropneustes fossilis (Bloch, 1794): A Key for Identification.
- Authors
Rahman, Md. Ataur; Hasan, Md. Rabiul; Hossain, Md. Yeamin; Islam, Md. Akhtarul; Khatun, Dalia; Rahman, Obaidur; Mawa, Zannatul; Islam, Md. Sahinoor; Chowdhury, Asma Afroz; Parvin, Farida; Khatun, Halima
- Abstract
The present study revealed the first complete information on meristic counts covering various fin rays and morphometric characteristics using multi-linear dimensions of Heteropneustes fossilis, including length-weight relationships (LWRs) and length-length relationships (LLRs) of H. fossilis from the Gajner Beel, a wetland ecosystem in northwestern (NW) Bangladesh. A total of 333 individuals of H. fossilis were captured by different traditional fishing gears such as cast net, square lift net, gill net, and conical trap between July 2017 and June 2018. For each individual, the total numbers of fin rays were counted using a magnifying glass. The body weight (BW) was measured by a digital balance and various lengths (TL, SL, PrDL etc.) were taken using digital slide calipers to the nearest 0.01 g and 0.01 cm, accuracy, respectively. BW ranged from 3.50 to 105.23 g, and TL varied from 6.70 to 26.80 cm. The fin formula of H. fossilis is: dorsal, D. 6; pectoral, Pc.1/6-7; pelvic, Pv. 6; anal, A. 64-69; and caudal, C.16-18. All LWRs were significantly correlated (p<0.001), with r2 values = 0.949. The calculated b values showed positive allometric growth in combined sexes (b > 3.00). LLRs were also highly correlated (p < 0.001) with r² values = 0.989. The findings of the current study can be very effective for species identification, stock assessment, and proper management of this particular species in the Gajner Beel of Bangladesh and the surrounding ecosystems.
- Subjects
BANGLADESH; GILLNETTING; CATFISHES; BODY weight; WETLANDS; MAGNIFYING glasses; IDENTIFICATION; FISHERY gear; KEGEL exercises
- Publication
Jordan Journal of Biological Sciences, 2019, Vol 12, Issue 4, p467
- ISSN
1995-6673
- Publication type
Article