NDLI: Size Distribution, Sex Ratio and Size at Maturity of Mud Crab (Scylla spp.) in Ranong Province, Thailand

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Size Distribution, Sex Ratio and Size at Maturity of Mud Crab (Scylla spp.) in Ranong Province, Thailand

Content Provider	Semantic Scholar
Author	Tongdee, Nualanong
Copyright Year	2006
Abstract	Mud crab samples were taken from landing sites in La-un, Muang and Kapoe Districts, Ranong Province, Thailand from April 1998 to March 1999 to examine size distribution, sex ratio and ovarian development of the population. Information on the fishing methods and the relationships between crab catches and environment were also obtained. A total of 4,501 male and 3,735 female mud crabs were sampled from La-un, Muang and Kapoe districts of Ranong Province from April 1998 to March 1999. Relationships between carapace width (CW) and body weight (BW) were BW = 0.119CW3.321 (r2 =0.927) for male crabs and BW = 0.402CW2.685 (r2 =0.912) for female crabs. The modal classes of CW were 8.0 to 8.5, 8.5 to 9.0, and 7.5 to 8.0 cm in La-un, Muang and Kapoe Districts, respectively. Male to female ratios were 1:0.82, 1:0.76, and 1:0.90 while immature to mature female ratios were 1:0.51, 1: 0.82 and 1:0.26 in La-un, Muang and Kapoe Districts, respectively. Mean CW at sexual maturity (CWm) for female crabs was approximately 8.6 cm. The gonadosomatic index for female crabs varied from April 1998 to March 1999, but with peaks in June and from August to October. The data also showed a recruitment of small crabs in June and July.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://coastal.fisheries.go.th/v2/research/files/full/_Size%20Distribution,%20Sex%20Ratio%20and%20Size%20at%20Maturity%20ofMud%20Crab%20(Scylla%20spp.)%20in%20Ranong%20Province,%20Thailand.PDF
Alternate Webpage(s)	https://www.asianfisheriessociety.org/publication/downloadfile.php?dldname=Size+Distribution,+Sex+Ratio+and+Size+at+Maturity+of+Mud+Crab+(Scylla+spp.)+in+Ranong+Province,+Thailand.pdf&file=Y0dSbUx6QTJPRFEwTURnd01ERXpOVFU0T0RBMk1EWXVjR1Jt&id=517
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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