{"title":"Life history traits of the Blackspotted smooth-hound Mustelus punctulatus (Carcharhiniformes: Triakidae) in the Adriatic Sea","authors":"Romana Gračan, T. Polak, B. Lazar","doi":"10.20302/nc.2021.30.31","DOIUrl":null,"url":null,"abstract":"We present demographic and reproductive parameters of commercially exploited shark, blackspotted smooth-hound (Mustelus punctulatus), based on samples from 117 males and 108 females from the Adriatic Sea. Calculated size and age at maturity were 83.1 cm in total length (TL) and 6.6 years for males and 100.0 cm TL and 12.5 years for females. The oldest observed male and female were 14 and 19 years old, respectively. The Gompertz growth model provided the best fit and predicted a theoretical maximum size (L∞) of 129.3 cm TL and a growth coefficient (k) of 0.15 year–1 for males, and L∞ = 141.1 cm TL and k = 0.13 year–1 for females. Obtained life history traits classify smooth-hound as slow-growing species, extremely sensitive to fishing, and highlight the need for the development of management strategy for this vulnerable species.","PeriodicalId":36013,"journal":{"name":"Natura Croatica","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Natura Croatica","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.20302/nc.2021.30.31","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}
引用次数: 1
Abstract
We present demographic and reproductive parameters of commercially exploited shark, blackspotted smooth-hound (Mustelus punctulatus), based on samples from 117 males and 108 females from the Adriatic Sea. Calculated size and age at maturity were 83.1 cm in total length (TL) and 6.6 years for males and 100.0 cm TL and 12.5 years for females. The oldest observed male and female were 14 and 19 years old, respectively. The Gompertz growth model provided the best fit and predicted a theoretical maximum size (L∞) of 129.3 cm TL and a growth coefficient (k) of 0.15 year–1 for males, and L∞ = 141.1 cm TL and k = 0.13 year–1 for females. Obtained life history traits classify smooth-hound as slow-growing species, extremely sensitive to fishing, and highlight the need for the development of management strategy for this vulnerable species.
基于来自亚得里亚海的117只雄性和108只雌性的样本，我们提出了商业开发的鲨鱼——黑斑光滑猎犬（Mustelus punctulatus）的人口统计和繁殖参数。成熟时计算出的体型和年龄为83.1厘米，雄性为6.6岁，雌性为100.0厘米，雌性为12.5岁。观察到的年龄最大的男性和女性分别为14岁和19岁。Gompertz生长模型提供了最佳拟合，并预测男性的理论最大尺寸（L∞）为129.3 cm TL，生长系数（k）为0.15年-1，女性的L∞=141.1 cm TL，k=0.13年-1。获得的生活史特征将光滑猎犬归类为生长缓慢的物种，对捕鱼极为敏感，并强调需要制定针对这一脆弱物种的管理策略。
期刊介绍：
Natura Croatica is a scientific journal of the Croatian Natural History Museum in Zagreb. It publishes papers that bring original insight into zoology, botany, geology, palaeontology, mineralogy and petrography, with emphasis on systematics, morphology, ecology. The journal welcomes papers related to research carried out in the Croatian Natural History Museum, as well as in other Natural History museums, departments and collections.
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