{"title":"Population dynamics for banana prawns, Penaeus merguiensis de Man, 1888 in coastal waters off the northern part of the Persian Gulf, Iran","authors":"M. Safaie","doi":"10.1080/03946975.2015.1006459","DOIUrl":null,"url":null,"abstract":"This study was conducted to determine the population dynamics of Penaeus merguiensis stock in the coastal waters of the Persian Gulf. A total of 4994 male and 5264 female prawns were collected monthly by a bottom-trawl net, from July 2010 to September 2012. The carapace length and weight relationship demonstrated that growth in both sexes was allometric. The asymptotic carapace length (CL∞) was estimated at 48 mm for males and 54 mm for females. The growth parameter K was calculated as 1.6 Yr− 1 for males and 1.8 Yr− 1 for females. The total mortality rate for males was more than that for females. And the exploitation rates were 0.75 for males and 0.69 for females. The sex ratio identified that it was not a constant 1:1 throughout the year, with 51.3% females. Banana prawns can spawn all year round and have a spawning peak from February to May. The Lm50% was estimated at a carapace length of 33.64 mm. The exploitation of P. merguiensis in the area is intended to protect spawners and juvenile stock for renewal. Also, the results showed that long-term monitoring is still required to better understand P. merguiensis population dynamics.","PeriodicalId":0,"journal":{"name":"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/03946975.2015.1006459","citationCount":"15","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1080/03946975.2015.1006459","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 15
Abstract
This study was conducted to determine the population dynamics of Penaeus merguiensis stock in the coastal waters of the Persian Gulf. A total of 4994 male and 5264 female prawns were collected monthly by a bottom-trawl net, from July 2010 to September 2012. The carapace length and weight relationship demonstrated that growth in both sexes was allometric. The asymptotic carapace length (CL∞) was estimated at 48 mm for males and 54 mm for females. The growth parameter K was calculated as 1.6 Yr− 1 for males and 1.8 Yr− 1 for females. The total mortality rate for males was more than that for females. And the exploitation rates were 0.75 for males and 0.69 for females. The sex ratio identified that it was not a constant 1:1 throughout the year, with 51.3% females. Banana prawns can spawn all year round and have a spawning peak from February to May. The Lm50% was estimated at a carapace length of 33.64 mm. The exploitation of P. merguiensis in the area is intended to protect spawners and juvenile stock for renewal. Also, the results showed that long-term monitoring is still required to better understand P. merguiensis population dynamics.
本研究旨在确定波斯湾沿岸水域merguiensis种群的种群动态。2010年7月至2012年9月,每月采用底拖网法捕获雄对虾4994尾,雌对虾5264尾。甲壳长度与体重的关系表明两性的生长都是异速生长。雄性的渐近甲壳长度(CL∞)为48 mm,雌性为54 mm。计算的生长参数K为男性1.6 Yr - 1,女性1.8 Yr - 1。男性的总死亡率高于女性。雄虫的剥削率为0.75,雌虫的剥削率为0.69。性别比确定它不是全年不变的1:1,有51.3%的女性。香蕉对虾全年可产卵,2月至5月为产卵高峰。据估计,l50%的甲壳长度为33.64 mm。在该地区开发麦桂鱼是为了保护产卵和幼鱼种群的更新。同时,还需要进行长期的监测,以更好地了解麦桂水杨的种群动态。