Pub Date : 2021-10-08DOI: 10.9734/bpi/nvbs/v4/4616f
R. Sirisha, Imandi, P. Y. Rao
Studies on maturation, spawning and fecundity are essential for estimation of reproductive potential of a population as well as fishery management. Maturation and spawning of the puffer fish Lagocephalus lunaris was reported from Visakhapatnam during January 2008 to December 2009 to understand reproductive potential of their population. The present observations showed that males are smaller than females. Sex-ratio indicated that females were dominant in the catches and the sex ratio for male to female was 1: 1.17. Chi-square (X2) analysis showed that there was a significant difference (p< 0.05) between sexes in their occurrence during April 2008, November 2008 and June 2009. The size at first maturity was found to be 141 mm total length for females of L. lunaris. A scale of six stages of maturity of gonads has been identified in females of L. lunaris. Spawning takes place throughout the year with peak during April to June and September to December. Gonad Somatic Index has been found to be high during January, April, June, September and December in females. Fecundity varied from 103355 to 298795 ova.
{"title":"Maturation and Spawning of Green – Rough – Back Pufferfish, Lagocephalus lunaris","authors":"R. Sirisha, Imandi, P. Y. Rao","doi":"10.9734/bpi/nvbs/v4/4616f","DOIUrl":"https://doi.org/10.9734/bpi/nvbs/v4/4616f","url":null,"abstract":"Studies on maturation, spawning and fecundity are essential for estimation of reproductive potential of a population as well as fishery management. Maturation and spawning of the puffer fish Lagocephalus lunaris was reported from Visakhapatnam during January 2008 to December 2009 to understand reproductive potential of their population. The present observations showed that males are smaller than females. Sex-ratio indicated that females were dominant in the catches and the sex ratio for male to female was 1: 1.17. Chi-square (X2) analysis showed that there was a significant difference (p< 0.05) between sexes in their occurrence during April 2008, November 2008 and June 2009. The size at first maturity was found to be 141 mm total length for females of L. lunaris. A scale of six stages of maturity of gonads has been identified in females of L. lunaris. Spawning takes place throughout the year with peak during April to June and September to December. Gonad Somatic Index has been found to be high during January, April, June, September and December in females. Fecundity varied from 103355 to 298795 ova.","PeriodicalId":210785,"journal":{"name":"New Visions in Biological Science Vol. 4","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114827616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-08DOI: 10.9734/bpi/nvbs/v4/2756e
Tirthankar Dalui
{"title":"Evaluation of Some Commercially Available Insecticides against Mango Leaf Gall Midge Procontarinia matteiana (Diptera: Cecidomyiidae)","authors":"Tirthankar Dalui","doi":"10.9734/bpi/nvbs/v4/2756e","DOIUrl":"https://doi.org/10.9734/bpi/nvbs/v4/2756e","url":null,"abstract":"","PeriodicalId":210785,"journal":{"name":"New Visions in Biological Science Vol. 4","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132607572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-08DOI: 10.9734/bpi/nvbs/v4/13102d
M.Abareethan, A. Amsath
Administration of probiotic feed like Bacillus subtilis, Lactococcus lactis, Saccharomyces cerevisiae in the diets confer beneficial effect to the host animal. In this study the nutritional value of probiotic feed and its utilization are studed. The probiotics alter the enzymes, microbial metabolism and improve the weight gain and survival rate. Probiotic diets are being incorporated together with prebiotics in recent years. Probiotics with synbiotics elicit synergistic and more favorable actions. Increased advantage of formulated probiotic and its benefits in maintaining good water quality and rapid increase in growth of L. rohita were evaluated and characterized in this study, promising feed and novel strategy to be used in aquaculture from this research study. The selection of probiotics in aquaculture improved growth, attachment to the intestinal mucus and production of beneficial compounds can be considered for improving the growth.
{"title":"Determination of Characterization and Evaluation of Probiotic Fish Feed","authors":"M.Abareethan, A. Amsath","doi":"10.9734/bpi/nvbs/v4/13102d","DOIUrl":"https://doi.org/10.9734/bpi/nvbs/v4/13102d","url":null,"abstract":"Administration of probiotic feed like Bacillus subtilis, Lactococcus lactis, Saccharomyces cerevisiae in the diets confer beneficial effect to the host animal. In this study the nutritional value of probiotic feed and its utilization are studed. The probiotics alter the enzymes, microbial metabolism and improve the weight gain and survival rate. Probiotic diets are being incorporated together with prebiotics in recent years. Probiotics with synbiotics elicit synergistic and more favorable actions. Increased advantage of formulated probiotic and its benefits in maintaining good water quality and rapid increase in growth of L. rohita were evaluated and characterized in this study, promising feed and novel strategy to be used in aquaculture from this research study. The selection of probiotics in aquaculture improved growth, attachment to the intestinal mucus and production of beneficial compounds can be considered for improving the growth.","PeriodicalId":210785,"journal":{"name":"New Visions in Biological Science Vol. 4","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127497932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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