Original scientific paper
https://doi.org/10.2478/cjf-2023-0013
LIFE HISTORY TRAITS OF GANGETIC AILIA Ailia coila (Hamilton 1822) IN THE TETULIA RIVER, SOUTHERN BANGLADESH
Newton Saha
; Department of Fisheries Management, Faculty of Fisheries, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh
Prosun Roy
; Department of Big Data Fishery Resource Management, College of Fisheries and Ocean Sciences, Chonnam National University, Yeosu 59626, Korea 3 Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
Tanmoy Sarkar Utsha
; Faculty of Fisheries, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh
Sudipta Kumar Nag
; Faculty of Fisheries, Patuakhali Science and Technology University, Patuakhali 8602, Bangladesh
Gitartha Kaushik
; Department of Zoology, Rangapara College Sontipur, Assam 784505, India
Md. Yeamin Hossain
; Department of Fisheries, University of Rajshahi, Rajshahi 6205, Bangladesh
Abstract
The near-threatened Ailia coila, commonly referred to as Gangetic ailia, is a catfish species in the Ailiidae family that is indigenous to Bangladesh, Pakistan, Nepal, and India. This study describes the comprehensive explanation of life-history traits of Ailia coila, including length-frequency distribution (LFD), growth pattern (length-weight relationships, LWRs and length-length relationship, LLR), form factor (a3.0), condition factors (allometric, KA; Fulton’s, KF; relative, KR and relative weight, WR), size at first sexual maturity (Lm), optimum catchable length (Lopt) and natural mortality (Mw) from the Tetulia River in southern Bangladesh. Additionally, Lα, a3.0, Lm, Mw and Lopt from various water bodies worldwide using the existing literature were calculated in this study. A total of 316 samples were randomly collected occasionally using traditional gear for a year from July 2021 to June 2022. With an accuracy of 0.01 cm and 0.01 g, each fish’s total length (TL), standard length (SL), and body weight (BW) were measured. The group from 10.00 to 10.99 cm TL was numerically leading and the b values of LWRs indicate positive allometric growth. The a3.0 was 0.005 and KF was the best for assessing the well-being of A. coila. Additionally, WR indicates that the habitat was imbalanced with higher predators. The calculated Lm, Lopt and Mw were 9.19 (~ 9.2 cm TL), 10.7 cm TL and 1.37 year-1 for A. coila in the Tetulia River, respectively. These insights are vital for future research and recommending suitable management strategies for A. coila in the Tetulia River and neighboring basins.
Keywords
Growth pattern; Population biology; Natural mortality; Sexual maturity
Hrčak ID:
307569
URI
Publication date:
1.9.2023.
Visits: 670 *