Shraddha D. Ranaware, V. H. Nirmale, B. P. Bhosale, S. Metar, Prakash E. Shingare
{"title":"印度中西部海岸 Ratnagiri 的钝吻梭鱼 Sphyraena obtusata (Cuvier, 1829) 的摄食动态和繁殖生物学特征","authors":"Shraddha D. Ranaware, V. H. Nirmale, B. P. Bhosale, S. Metar, Prakash E. Shingare","doi":"10.21077/ijf.2023.70.3.131669-04","DOIUrl":null,"url":null,"abstract":"The obtuse barracuda Sphyraena obtusata (Cuvier, 1829) is a commercially important foodfish belonging to the family Sphyraenidae and landed mostly as trawl bycatch along Ratnagiri.Investigations were carried out on the species with respect to the length-weight relationship,condition factor, morphometrics, feeding and reproductive biology. The length-weightrelationship showed positive allometric growth in males, females and pooled individuals. Allmorphometric measurements showed a high degree of correlation with total length. The gutcontent analysis revealed S. obtusata to be a carnivore fish feeding mainly on fish juveniles,fish scales, crustaceans and cephalopod appendages. The male:female sex ratio was foundto be 1:0.90. Gonado-somatic index (GSI), maturity and ova diameter studies indicated thatS. obtusata has a prolonged spawning season with individuals spawning twice in a season.Absolute fecundity ranged from 68355 to 310615 eggs with an average of 137783 eggs. Themean length at sexual maturity for females was found to be 22.92 cm. Keywords:Carnivorous fish, Fish biology, Life history,Trophodynamics, Tropical fisheries","PeriodicalId":0,"journal":{"name":"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Feeding dynamics and reproductive biology of the obtuse barracuda Sphyraena obtusata (Cuvier, 1829) from Ratnagiri, central west coast of India\",\"authors\":\"Shraddha D. Ranaware, V. H. Nirmale, B. P. Bhosale, S. Metar, Prakash E. Shingare\",\"doi\":\"10.21077/ijf.2023.70.3.131669-04\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The obtuse barracuda Sphyraena obtusata (Cuvier, 1829) is a commercially important foodfish belonging to the family Sphyraenidae and landed mostly as trawl bycatch along Ratnagiri.Investigations were carried out on the species with respect to the length-weight relationship,condition factor, morphometrics, feeding and reproductive biology. The length-weightrelationship showed positive allometric growth in males, females and pooled individuals. Allmorphometric measurements showed a high degree of correlation with total length. The gutcontent analysis revealed S. obtusata to be a carnivore fish feeding mainly on fish juveniles,fish scales, crustaceans and cephalopod appendages. The male:female sex ratio was foundto be 1:0.90. Gonado-somatic index (GSI), maturity and ova diameter studies indicated thatS. obtusata has a prolonged spawning season with individuals spawning twice in a season.Absolute fecundity ranged from 68355 to 310615 eggs with an average of 137783 eggs. Themean length at sexual maturity for females was found to be 22.92 cm. Keywords:Carnivorous fish, Fish biology, Life history,Trophodynamics, Tropical fisheries\",\"PeriodicalId\":0,\"journal\":{\"name\":\"\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0,\"publicationDate\":\"2023-09-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.21077/ijf.2023.70.3.131669-04\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.21077/ijf.2023.70.3.131669-04","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Feeding dynamics and reproductive biology of the obtuse barracuda Sphyraena obtusata (Cuvier, 1829) from Ratnagiri, central west coast of India
The obtuse barracuda Sphyraena obtusata (Cuvier, 1829) is a commercially important foodfish belonging to the family Sphyraenidae and landed mostly as trawl bycatch along Ratnagiri.Investigations were carried out on the species with respect to the length-weight relationship,condition factor, morphometrics, feeding and reproductive biology. The length-weightrelationship showed positive allometric growth in males, females and pooled individuals. Allmorphometric measurements showed a high degree of correlation with total length. The gutcontent analysis revealed S. obtusata to be a carnivore fish feeding mainly on fish juveniles,fish scales, crustaceans and cephalopod appendages. The male:female sex ratio was foundto be 1:0.90. Gonado-somatic index (GSI), maturity and ova diameter studies indicated thatS. obtusata has a prolonged spawning season with individuals spawning twice in a season.Absolute fecundity ranged from 68355 to 310615 eggs with an average of 137783 eggs. Themean length at sexual maturity for females was found to be 22.92 cm. Keywords:Carnivorous fish, Fish biology, Life history,Trophodynamics, Tropical fisheries
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