Some population parameters of Ruditapes philippinarum (Bivalvia, Veneridae) on the southern coast of the Marmara Sea, Turkey

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• 作者：Serhat ?olako?lu (1)
  Mustafa Palaz (2)
  
• 关键词：Ruditapes philippinarum ; Growth ; Mortality ; Reproduction ; Marmara Sea
• 刊名：Helgoland Marine Research
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：68
• 期：4
• 页码：539-548
• 全文大小：961 KB
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• 作者单位：Serhat ?olako?lu (1)
  Mustafa Palaz (2)
  
  1. Ministry of Food, Agriculture and Livestock, ?anakkale Provincial Directorate, 17100, ?anakkale, Turkey
  2. Ezine Vocational Schools, Canakkale Onsekiz Mart University, 17100, ?anakkale, Turkey
  
• ISSN：1438-3888

文摘

Ruditapes philippinarum, a venerid clam, is a dominant species in the sandy and muddy areas in the coastal waters of the Marmara Sea. Intensive commercial harvesting of this species is conducted in these regions. We studied the population dynamics of R. philippinarum on the southern coast of the Marmara Sea (Band?rma). Samples were collected on a monthly basis between September 2012 and August 2013. Seasonal von Bertalanffy growth parameters using the length–frequency distribution of R. philippinarum were estimated at L ?/sub>?=?67.50?mm and K?=?0.33?year?, and the seasonal oscillation in growth rate was 0.53. The slowest growth period was in January. The growth performance index and potential lifespan were 3.182 and 8.06?years, respectively. The growth relationship was confirmed to have a positive allometric pattern. The average total mortality rate was estimated to be 0.777?year?, whereas the natural and fishing mortality rates were 0.539 and 0.238?year?, respectively. The current exploitation rate of R. philippinarum was 0.306. The recruitment pattern peaked during June–August, and spawning occurred between May and August. The results of this study provide valuable information on the status of R. philippinarum stocks.