Objective:To provide complete and informative description on morphometric characters i.e.,relationships between length-weight(LWRs)and length-length and meristic characters of Botia lohachata from the Ganges River,Nor...Objective:To provide complete and informative description on morphometric characters i.e.,relationships between length-weight(LWRs)and length-length and meristic characters of Botia lohachata from the Ganges River,Northwestern Bangladesh.Methods:Samples were collected occasionally using different fishing gears from July 2015 to June 2016.For each individual,total 15 lengths were taken using digital slide calipers and body weight was measured using an electronic balance with 0.01 cm and 0.01 g accuracy,respectively.The LWRs was estimated using the formula:W=a×L^(b),where W was the body weight(g);L was the length(cm)and,a and b were LWRs parameter.The meristic data were counted using magnifying glass.Results:A sum of 110 individuals of Botia lohachata were hardly collected.Total length was varied from 3.70-6.80 cm and body weight was ranged from 0.55 to 2.80 g.The LWRs were highly correlated(P<0.001)with r^(2)values greater than 0.961.The calculated overall allometric coefficient(b)indicated negative allometric growth pattern(b<3.00,P<0.001).In addition,all length-length relationships were highly significant(P<0.001)and most of the r^(2)values were greater than 0.950.The fin formula was-dorsal,D.10-11(2-3/8);pectoral,P_(c).8-10(4-6/4);pelvic,P_(v).8(2-3/5-6);anal,A_(n).6-7(2/4-5);and caudal,C_(a).20-22(6-8/14-16).Conclusions:The findings of the present study will keep a crucial contribution to fisheries scientist in favor of identification of this fish,stock assessment and sustainable conservation in the Ganges River of Bangladesh and adjoining countries.Also,these results will impart valuable information for the FishBase,as well as provide an important baseline for further studies.展开更多
基金Supported by(i)Infrastructure Development and Research Strengthening of Bangladesh Fisheries Research Institute Project,Shrimp Research Station,Bagerhat,Bangladesh(Serial No.04,Session:2013-2014)(ii)The World Academy of Sciences(Ref:RGA No.14-028 RG/BIO/AS_1,UNESCO FR:324028574)(iii)Ministry of Education,Bangladesh(No.37.200000.004.003.005.2014.1309/1(42)).
文摘Objective:To provide complete and informative description on morphometric characters i.e.,relationships between length-weight(LWRs)and length-length and meristic characters of Botia lohachata from the Ganges River,Northwestern Bangladesh.Methods:Samples were collected occasionally using different fishing gears from July 2015 to June 2016.For each individual,total 15 lengths were taken using digital slide calipers and body weight was measured using an electronic balance with 0.01 cm and 0.01 g accuracy,respectively.The LWRs was estimated using the formula:W=a×L^(b),where W was the body weight(g);L was the length(cm)and,a and b were LWRs parameter.The meristic data were counted using magnifying glass.Results:A sum of 110 individuals of Botia lohachata were hardly collected.Total length was varied from 3.70-6.80 cm and body weight was ranged from 0.55 to 2.80 g.The LWRs were highly correlated(P<0.001)with r^(2)values greater than 0.961.The calculated overall allometric coefficient(b)indicated negative allometric growth pattern(b<3.00,P<0.001).In addition,all length-length relationships were highly significant(P<0.001)and most of the r^(2)values were greater than 0.950.The fin formula was-dorsal,D.10-11(2-3/8);pectoral,P_(c).8-10(4-6/4);pelvic,P_(v).8(2-3/5-6);anal,A_(n).6-7(2/4-5);and caudal,C_(a).20-22(6-8/14-16).Conclusions:The findings of the present study will keep a crucial contribution to fisheries scientist in favor of identification of this fish,stock assessment and sustainable conservation in the Ganges River of Bangladesh and adjoining countries.Also,these results will impart valuable information for the FishBase,as well as provide an important baseline for further studies.
