Temporal variations of sex ratio, length-weight relationships and condition factor of Cabdio morar (cyprinidae) in the Jamuna (Brahmaputra river distributary) river, northern Bangladesh. | [Pakistan Journal of Zoology • 2016]

Author(s):

1. Md. Yeamin Hossain: Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi, Bangladesh

2. Md. Mosaddequr Rahman: Faculty of Fisheries, Kagoshima University, Shimoarata, Kagoshima, Japan

3. Ali H. Bahkali: Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia

4. Khairun Yahya: School of Biological Sciences and Centre for Marine and Coastal Studies, Universiti Sains Malaysia, Penang, Malaysia

5. Mst. Somaiya Arefin: Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi, Bangladesh

6. Md. Istiaque Hossain: Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi, Bangladesh

7. Abdallah M. Elgorban: Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia

8. Md. Alomgir Hossen: Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi, Bangladesh

9. Md. Mahmudul Islam: Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi, Bangladesh

10. Zubia Masood: Department of Zoology, University of Karachi, Karachi, Pakistan

Abstract:

The fish Cabdio morar (Hamilton, 1822) is a member of the family Cyprinidae, commonly known as morari in Bangladesh and Aspidoparia in India. This fish was previously known as Aspidoparia morar and is widely distributed in Bangladesh, India, Myanmar, Nepal, Pakistan, and Thailand. The present study describes the temporal variations of sex ratio (SR), length-frequency distributions (LFDs), length-weight relationship (LWRs), and Fulton’s condition factor (KF) of the C. morar. A total of 1200 specimens (male = 552, female = 648) ranging from 4.06-12.84 cm TL and 0.53-16.75 G BW were analyzed. The overall SR showed significant differences from the expected value of 1:1 (male: female) (χ 2 = 7.68, P > 0.01), and there was also a significant difference in LFD between the sexes (P 3.00) in males and isometric growth in females (~ 3.00). Hence, LWRs were significantly different between males and females (ANCOVA, P

Page(s): 1099-1107

DOI: DOI not available

Published: Journal: Pakistan Journal of Zoology, Volume: 48, Issue: 4, Year: 2016

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