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  • 标题:POPULATION STRUCTURE OF WEDGE CLAM, DONAX TRUNCULUS (BIVALVIA, DONACIDAE), IN THE SOUTHERN SEA OF MARMARA, TURKEY
  • 本地全文:下载
  • 作者:Serhat Colakoglu ; Pinar Yildirim ; Mine Cardak
  • 期刊名称:Fresenius Environmental Bulletin
  • 印刷版ISSN:1018-4619
  • 出版年度:2019
  • 卷号:28
  • 期号:7
  • 页码:5220-5225
  • 语种:English
  • 出版社:PSP Publishing
  • 摘要:The growth, reproduction, and density of wedge clam (Donax trunculus) were studied at a depth of 0.5-2 m in Denizkent in the Southern Sea of Marmara, Turkey. Samples were collected monthly between May 2017 and July 2018. The average density of the studied population ranged between 118 individuals m~(-2) (November) and 245 individuals m~(-2) (July). von Bertalanffy growth parameters using the length-frequency distribution of Donax trunculus were estimated at L_∞ = 43.85 mm and the rate at which the asymptotic length (L_∞) is approached (K) =0.73 y~(-1). The slowest growth period was in January. Growth performance index, potential longevity and maximum length derived from seasonal parameters were calculated as 3.15, 4.11 y and 42 mm, respectively. The growth pattern showed negative al-lometric growth (slope [b] = 2.71), the spawning period occurred from April to July and peaked between May and June.
  • 关键词:Donax trunculus;growth;reproduction;density;Marmara Sea
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