STUDIES ON THE LENGTH-WEIGHT RELATIONSHIP (LWR) OF THIRTEEN (13) DOMINANT ESTUARINE FINFISH, SHRIMP AND CRAB SPECIES FOUND IN INDUS DELTA CREEKS SYSTEM
Main Article Content
Keywords
Length-weight relationship, b value, finfish, shrimp, crab species, Indus delta
Abstract
This study was carried out in the Pakistani province of Sindh to ascertain the length-weight connection of thirteen major fish species from the Indus delta creek system. Using a trawl net with a mesh size of 50µ, fish samples were collected. Arius tenuispinis showed negative allometric growth all year long, with b = 2.68, b = 2.21, and b = 2.66 during the pre-, during monsoon, and post-monsoon periods, respectively. During the monsoon, Sillago sihama exhibits positive allometry growth (b = 3.76), but during the pre- and post-monsoon, it displays negative allometry growth (b = 2.64 and 2.66). Acanthopagrus arabicus exhibit different allometry growth patterns: negative growth (b = 2.32) and positive growth (b = 3.48) during the pre- and post-monsoon respectively. Lepturacanthus savala exhibits negative allometric growth (b = 2.47) and (b = 2.50) during the pre- and post-monsoon and isometric growth (b = 3.08) during the monsoon. In the pre-monsoon, Hyporhamphus limabtus exhibits negative allometry (b = 2.45) during pre-monsoon, isometric (b = 3.03) during the monsoon, and positive allometry (b = 3.24) during the post-monsoon. For Pennahia annea, the monsoon brings about positive allometry growth (b = 3.40) while the post-monsoon brings about negative allometry growth (b = 2.55). The growth indices for the prawn species Penaeus indicus were 2.14, 2.33 and 1.84, during pre-, during monsoon and post-monsoon periods respectively, showing negative allometry growth. Metapenaeus affinis also exhibited negative allometry growth with b=2.26 and b=1.83 during pre-monsoon and post-monsoon respectively. Penaeus penicillatus also exhibits negative allometry growth with b=1.40 during pre-, b=1.38 during monsoon and b= 1.53 during post-monsoon seasons. Negative allometry growth was demonstrated by Exopalaemon styliferus, with b=1.50, b=0.96, and b=1.59 for pre-monsoon, during monsoon, and post-monsoon seasons, respectively. Charybdis sp., a species of crab, exhibits negative allometry growth during both the pre- and post-monsoon periods with (b=2.14 and b=0.33). Charybdis feriata showed negative allometry growth in the pre-, during-, and post-monsoon periods, with b=1.81, b=2.91 and 2.97 respectively. Moreover, Portunus pelagicus showed isometry growth with b=3.15 and b=3.12 during pre- and post-monsoon, respectively, but negative allometry with b=2.91 during monsoon. The values of K and relative condition factor obtained in this study are within the range of expected weight.
References
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16. Abdalla, M. H. ; G.D.I. Hasanin; Heba E. ElSayed and A.A.O. ElAiatt (2022). Length-Weight Relationship, Sex Ratio and Condition Factor of Blue swimmer Crab (Portunus pelagicus) in Bardawil Lagoon, Egypt. SINAI Journal of Applied Sciences 11 (4) 2022: 739-754p.
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20. DAS, N.G. , A. A. Majumder, and S.M.M. Sarwar (1997). Length-weight relationship and condition factor of catfish Arius tenuispinis Day, 1877. Indian J. Fish., 44(1) : 81-85, Jan.-Mar., 1997.
21. Sawant, B. T., S. K. Chakraborty, A. K. Jaiswar, Sarada K. Bhagabati, Tarkeshwar Kumar & Paramita B. Sawant (2013). Comparative length-weight relationship of two species of catfishes, Arius caelatus (Valenciennes, 1840) and Arius tenuispinis (Day, 1877) from Mumbai waters. Indian Journal of Geo-Marine Sciences. Vol. 42(2), April 2013, pp.266-269
22. Fanning, L.P., P. Medley, and M. W. Khan, and T. Valinassab (2016), Comprehensive Assessment of Pakistan's Marine Fisheries Resources 2009-2015. Report prepared for the Fisheries Resources Appraisal in Pakistan Project. FI/UTF/PAK/108/P AK, Field Document No 9. Food and Agriculture Organization of the United Nations and Marine Fisheries Department Government of Pakistan. 1-170p.
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26. Khan, M. A., S. Riaz and K. Yousuf (2015). Size Distribution and Length Weight Relationship in commercially important fish Sillago Sihama (Forsskal, 1775) (Family: Sillaginidae) from Karachi Coast, Pakistan. Int. J. Biol. Res., 3(2): 113-117, 2015.
27. Iwatsuki, Y., 2013. Review of the Acanthopagrus latus complex (Perciformes: Sparidae) with descriptions of three new species from the Indo-West Pacific Ocean. J. Fish Biol. 83(1):64-95.
28. Randall, J.E. (1995). Coastal fishes of Oman. University of Hawaii Press, Honolulu, Hawaii.
29. Riaz, S., M. A. Khan and R.Y. Farooque (2017). Length Weight Relationship in Acanthopagrus Arabicus (Iwatsuki, 2013) from Karachi Coast, Pakistan. INT. J. BIOL. BIOTECH., 14 (2): 253-256, 2017.
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33. Pakhmode, P. K., A. S. A. Mohite, S. D. Naik, A. S. Mohite (2013). Length frequency analysis and length-weight relationship of ribbonfish, Lepturacanthus savala (Cuvier, 1829) off Ratnagiri coast, Maharashtra. International Journal of Fisheries and Aquatic Studies. s 2013; 1 (2): 25-30.
34. Al Sakaff, H. and M. Esseen, 1999. Length-weight relationship of fishes from Yemen waters (Gulf of Aden and Red Sea). Naga ICLARM Q. 22(1):41-42.
35. Rainboth, W.J., 1996. Fishes of the Cambodian Mekong. FAO species identification field guide for fishery purposes. FAO, Rome, 265 p.
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Aug 16, 2024
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Muhammad Wasim Khan, Ghulam Abbas, Shahnaz Rashid, Abdul Rauf, & Abdur Rahim. (2024). STUDIES ON THE LENGTH-WEIGHT RELATIONSHIP (LWR) OF THIRTEEN (13) DOMINANT ESTUARINE FINFISH, SHRIMP AND CRAB SPECIES FOUND IN INDUS DELTA CREEKS SYSTEM. Journal of Population Therapeutics and Clinical Pharmacology, 31(8), 3023-3040. https://doi.org/10.53555/yf3z1387
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Author Biographies
Muhammad Wasim Khan
Centre of Excellence in Marine Biology, Karachi University.
Ghulam Abbas
Centre of Excellence in Marine Biology, Karachi University.
Shahnaz Rashid
Centre of Excellence in Marine Biology, Karachi University.
Abdul Rauf
Centre of Excellence in Marine Biology, Karachi University.
Abdur Rahim
Department of Zoology, University of Malakand, Chakdara, Dir Lower, Khyber Pakhtunkhwa, Pakistan.
How to Cite
Muhammad Wasim Khan, Ghulam Abbas, Shahnaz Rashid, Abdul Rauf, & Abdur Rahim. (2024). STUDIES ON THE LENGTH-WEIGHT RELATIONSHIP (LWR) OF THIRTEEN (13) DOMINANT ESTUARINE FINFISH, SHRIMP AND CRAB SPECIES FOUND IN INDUS DELTA CREEKS SYSTEM. Journal of Population Therapeutics and Clinical Pharmacology, 31(8), 3023-3040. https://doi.org/10.53555/yf3z1387