Length-weight, maturity, and condition factor of torpedo scads (Megalaspis cordyla Linnaeus, 1758) in the Java Sea, Indonesia
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https://orcid.org/0000-0002-5000-1170
Abstract
Abstract. Oktaviani D, Priyanto E, Nugroho D. 2020. Length-weight, maturity, and condition factor of torpedo scads (Megalaspis cordyla Linnaeus, 1758) in the Java Sea, Indonesia. Biodiversitas 21: 1527-1534. The Java Sea comprises the most extensive ecosystem with high pressure on the biodiversity of marine fish species in Indonesia. Small pelagic fish is the main target among marine fish species in this area for decades to fulfill the need for animal protein for human consumption. Torpedo scads (Megalaspis cordyla Linnaeus, 1758) locally called as tetengkek is one of the common species caught in small pelagic seiners fisheries in the area. The significant increasing trend of annual fish landing could lead to unsustainable long-term harvesting. This study was performed to support baseline information on the biological characteristics of Torpedo scads. Measurements on length, weight, sex, maturity, and gonad weight are the main database that collected from February to December 2017 in the Tegal fishing port, north coast of central Java. A total of 2139 specimens were available for monthly length-frequency measurements, and 601 specimens among them specifically observed for length-weight, sex, maturity stage, and their gonad weight. The result showed that fish caught within a range of 16.0-35.4 cmFL and weight of 40-570 g. The length-weight relationship tends to be isometric with the equation of L = 7.e-03 W3.1511. The male and female ratio at 1.07: 1.0 with most of the fish caught at an immature stage (77% of males and 63% of females). Average Fulton condition factor (Kn) of 1.15+0.09 (0.86-1.64). A wide range of GSI indicates that torpedo scads partially spawn at each month of the year.
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Carpenter KE, Niem VH. 1999. The Living Marine Resources in the Western Central Pacific. Vo. 4. Bony fishes part 2 (Mugilidae to Carangidae). FAO. 2069-2790 pp. http://www.fao.org/3/x2400e/ x2400e00.htm
Convention on Biological Diversity (CBD). 2010. Target 6. Technical Rationale extended (COP/10/INF/12/ Rev.1). https://www.cbd.int/sp/targets/rationale/target-6
Das SK, De M, Ghaffar MA. 2014. Length-weight relationship and trophic level of hard-tail scad Megalaspis cordyla. Sci. Asia 40:317-322. http://dx.doi.org/10.2306/scienceasia1513-1874.2014.40.317
Flores A, Wiff R, Diaz E. 2014. Using the gonadosomatic index to estimate the maturity ogive: application to Chilean hake (Merluccius gayi gayi). ICES Jour. of Mar. Scie.72 (2): 508-514. https://doi.org/10.1093/icesjms/fsu155
Froese R. 2006. Cube law, condition factor, and weight-length relationships: history, meta-analysis, and recommendations. J Appl Ichthyol 22: 241-253
Froese R, and Pauly, D. (Editors). 2019. FishBase. World Wide Web electronic publication. www.fishbase.org, version (08/2019).
Fryxell DC, Arnett HA, Apgar TM, Kinnison MT, Palkovacs EP. 2015. Sex ratio variation shapes the ecological effects of globally introduced freshwater fish. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4633880/pdf/rspb20151970.pdf
Jadhav TD, Mohite SA. 2014. Reproductive biology of Horse mackerel Megalaspis cordyla (Linnaeus, 1758) along the Ratnagiri coast of Maharashtra, India. J. Mar. Biol. Ass. India, 55 (2), 35-40. http://doi:10.6024/jmbai.2013.55.2.01759-06
King M, 2007. Fisheries Biology, Assessment, and Management. Second Edition. 382 p.
Le Galliard GF, Fitze PS, Ferrière R, Clobert J. 2005. Sex ratio bias, male aggression, and population collapse in lizards. PNASS. 13(50):18231-18236 https://doi.org/10.1073/pnas.0505172102
Nash RDM, Valencia AH, Geffen AJ. 2006. The Origin of Fulton’s Condition Factor. Setting the Record Straight. Fisheries. 31(5):236-238. https://pdfs.semanticscholar.org/31b0/e2b909bf7a0d51f0eea815572b352400b376.pdf
Naie PG, Joseph S, Pilai VN. 2015. Length-weight relationship and relative condition factor of Stolephorus commersonii (Lacepede, 1803) exploited along the Kerala coast. J. Mar. Biol. Ass. India. 57(2):27-31. http://eprints.cmfri.org.in/10734/
Purwanto, Nugroho D, Suwarso. 2014. Potential Production of the five dominant small pelagic fish species groups in the Java Sea. Ind. Fish. Res. J. 20 (2): 59 – 67. http://ejournal-balitbang.kkp.go.id/index.php /ifrj/article/view/90/84
Qamar N, Panhwar SK, Brouwer S. 2016. Population Characteristics and Biological Reference Point Estimates for Two Carangid Fishes, Megalaspis cordyla, and Scomberoides tol, in the Northern Arabian Sea Coast of Pakistan. Pakistan J. Zool. 48(3): 869-874. https://www.zsp.com.pk/pdf48/869-87420(33)20QPJZ-0295-2015202-4-16-FinalRevised.pdf
Qamar N, Panhwa SK. 2018. Assessment of Maturity, Reproduction and Reproductive Potentials of Torpedo scads, Megalaspis cordyla (Linnaeus, 1758) from Northern Arabian Sea Coast of Pakistan. Russian Jour. of Mar. Biol. 44(1):42–50. https://link.springer.com/article/10.1134/S1063074018010078
Razzaq S, Kalhoro MA, Memon AM, Buzdar MA, Shafi M, Saeed F, Baloch A. 2019. Fishery stock assessment of Megalaspis cordyla by using non-equilibrium surplus production models In The Arabian Sea Coast of Pakistan. The Journal of Animal & Plant Sciences, 29(1):132-140.
Reuben S, Kasim HM, Sivakami S, Nair RPN, Kurup KN, Sivadas M, Noble A, Nair SKV, Raje SG. 1992. Fishery, biology, and stock assessment of carangid resources from the Indian seas. Indian J Fish 39, 195–234. http://eprints.cmfri.org.in/526/
Sadhotomo B. 2006. Population dynamics of the main pelagic species exploited In the java sea: a stock evaluation. Ind. Fish. Res. J. 12(1): 65-90. http://ejournal-balitbang.kkp.go.id/index.php/ifrj/article/ view/5545/4848
Sajina AM, Chakraborty SK, Jaiswar AK, Pazhayamadom DG. 2011. Stock structure analysis of Megalaspis cordyla (Linnaeus, 1758) along the Indian coast based on truss network analysis. Fish. Res. 108(1):100-105. https://doi.org/10.1016/j.fishres.2010.12.006
Sreenivasan P. 1978. Observation on the fishery and biology of Megalaspis cordyla at Vizhinjam. http://eprints.cmfri.org.in/753/
Stevenson RD, Woods WA. 2006. Condition indices for conservation: new uses for evolving tools. Integer. Comp. Biol. 46(6): 1169-1190. https://doi.org/10.1093/icb/icl052
Vicentini RN, Araújo FG. 2003. Sex ratio and size structure of Micropogonias furnieri (Desmarest, 1823) (Perciformes, Sciaenidae) in Sepetiba Bay, Rio de Janeiro, Brazil. Braz J Biol. 63(4):559-66. https://doi.org/10.1590/S1519-69842003000400003
Widodo J, Burhanuddin. 1995. Systematics of the small pelagic fish species. In Biology, Dynamics, and Exploitation of the Small Pelagic Fishes in the Java Sea (Nurhakim and Potiers (Ed)). p. 39-48. http://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers09-06/42766.pdf
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