Life History Traits of Gangetic Ailia Ailia coila (Hamilton 1822) in the Tetulia River, Southern Bangladesh
Author:
Saha Newton1, Roy Prosun23, Utsha Tanmoy Sarkar4, Nag Sudipta Kumar4, Kaushik Gitartha5, Hossain Md. Yeamin6
Affiliation:
1. Department of Fisheries Management , Faculty of Fisheries , Patuakhali Science and Technology University , Patuakhali , Bangladesh 2. Department of Big Data Fishery Resource Management, College of Fisheries and Ocean Sciences , Chonnam National University , Yeosu , Korea 3. Department of Aquaculture, Faculty of Fisheries , Bangladesh Agricultural University , Mymensingh , Bangladesh 4. Faculty of Fisheries , Patuakhali Science and Technology University , Patuakhali , Bangladesh 5. Department of Zoology, Rangapara College Sontipur , Assam , India 6. Department of Fisheries , University of Rajshahi , Rajshahi , Bangladesh
Abstract
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 (a
3.0
), condition factors (allometric, K
A
; Fulton’s, K
F
; relative, K
R
and relative weight, W
R
), size at first sexual maturity (L
m
), optimum catchable length (L
opt
) and natural mortality (M
w
) from the Tetulia River in southern Bangladesh. Additionally, L
α
, a
3.0
, L
m
, M
w
and L
opt
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 a
3.0
was 0.005 and K
F
was the best for assessing the well-being of A. coila. Additionally, W
R
indicates that the habitat was imbalanced with higher predators. The calculated L
m
, L
opt
and M
w
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.
Publisher
Walter de Gruyter GmbH
Subject
Management, Monitoring, Policy and Law,Ecology,Aquatic Science,Ecology, Evolution, Behavior and Systematics
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