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Articles by W. Sabbir
Total Records ( 2 ) for W. Sabbir
  M.Y. Ali , G.M. Salim , M.A. Mannan , M.M. Rahman , W. Sabbir and A. Murshida
  An investigation was carried out on the fish species availability in the fish landing centers of Khulna district. Almost all major fish landing centers in this area were surveyed. A total of 139 inland and marine water fish and crustacean species were observed. Out of 139, 126 species belonged to fin fish and the rest 13 species to crustacean. Amongst the fin fish species, 53 were fresh water, 23 were brackish water, 11 exotic and 39 marine water species. Twenty two fish species were found both as inland and marine water species. Nineteen species were detected endangered (Ompok pabda, Hilsa toil, Puntius sarana, Notopterus chitala, Mustus aor, Rita rita, Nandus nandus, Eutroeiichthys vacha, Notopterus notopterus, Wallago attu, Channa marulius, Labeo bata, Pangus pangus, Bagarius bagarius, Rasbora rasbora, Puntius ticto, Rohtee cotio, Labeo calbasu and Chanda nama). In summer, 30 species and in winter, 43 species were more available and the rest of the species were found all the year round. On the basis of abundance, Carp species, Lates calcarifer, Pelamys chiliensis, Trichiurus haumela, Katengus typus, Penaeus monodon and Scylla serrata were recorded most abundant, respectively.
  M.Y. Ali , D. Kamal , S.M.M. Hossain , M.A. Azam , W. Sabbir , A. Murshida , B. Ahmed and K. Azam
  Biological studies of the mud crab, Scylla serrata (Forskal) collected from the Sundarbans mangrove ecosystem of Bangladesh were conducted during May, 2001 to February, 2002. The overall sex ratio of male to female was found to be 1:0.94. The sex ratio was uneven in most size groups and in most of the months. The modal class size was 81-90 mm Carapace Width (CW) in male and 71-80 mm in female. The monthly size-frequency distribution exhibited some variations. The relationship between carapace width and body weight were estimated as W = -128.25+4.06 CW, log W = -3.73+3.06 log CW or, W = 0.0078 CW3.06 for male and W = -89.59+2.387 CW, logW = -1.6035+1.8928 log CW or, W = 0.005 CW1.8928 for female. The condition factor of male crabs showed two peaks; first in 61-70 mm and second in 121-130 mm size group. In case of female it was highest in 61-70 mm size group. The relative condition factor was maximum at 125.5 mm CW and 65.5 mm CW in male and female, respectively. Gonadosomatic Index showed a single peak during May to July for female crabs.
 
 
 
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