Reproduction of Surf Clam Mactra veneriformis Inhabiting the Liaohe Estuary
LIU Xiangfeng1, XIE Xi1, CHEN Wei1,2, ZHU Shouwei3, TENG Weiming1, LI Dacheng1, LI Xiaodong4, WANG Qingzhi1
1. Dalian Key Laboratory of Genetic Resources for Marine Shellfish, Liaoning Ocean and Fisheries Science Research Institute, Dalian 116023, China; 2. College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China; 3. Jinzhou Research Institute of Science and Technology, Jinzhou 121000, China; 4. College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang 110866, China
Abstract:The reproductive cycle and relationship with environmental factors were studied in surf clam Mactra veneriformis inhabiting the Liaohe Estuary. From March to October 2018, samples were collected monthly for biometrics, histological observation and conditional index (dry weight of soft part/dry weight of shell × 100%) analysis. Meanwhile, the water temperature, salinity and chlorophyll a content in the sea area were measured. Histological observation showed that gametes of the surf clam were discharged twice a year, once from April to June, another in early October, and the first gamete discharge lasted for a long time. The maturation and spawning was found at water temperature of 15—21 ℃ with relatively high content of chlorophyll a. There was no significant quantitative difference between males and females in the sea area, but slightly more males and hermaphroditism was found. The conditional index (CI) showed that there was an obvious recovery period from June to September after the spawning in the sea area, and CI was gradually increased from the minimal value of 8.66 (June) to the maximal value of 14.43 (September).
[1]王如才,王昭萍.海水贝类养殖学[M].青岛:中国海洋大学出版社,2008. [2]张安国,邵森林,赵凯,等.双台子河口两种滩涂埋栖性贝类的营养价值及安全性分析评价[J].水产学报,2016,40(9):1497-1504. [3]陈远,姜靖宇,李石磊,等.盘锦蛤蜊岗、小河滩涂文蛤及其相关资源调查报告[J].河北渔业,2012(1):46-49. [4]王万东.波纹巴非蛤性腺发育周年变化与人工催产[J].渔业研究,2018,40(3):196-202. [5]文宇.钝缀锦蛤繁殖生物学及稚贝生长的研究[D].长沙:湖南农业大学,2015. [6]郑言鑫.栉江珧繁殖周期及苗种培育技术的研究[D].上海:上海海洋大学,2015. [7]柯巧珍,李琪,陈常杰,等.黄河三角洲青蛤的繁殖生物学研究[J].中国海洋大学学报(自然科学版),2010,40(S1):99-104. [8]Kang C K, Park U M S, Lee P Y, et al. Seasonal variations in condition, reproductive activity, and biochemical composition of the Pacific oyster, Crassostrea gigas (Thunberg), in suspended culture in two coastal bays of Korea[J].Journal of Shellfish Research,2000,19(2):771-778. [9]Drummond L, Mulcahy M, Culloty S. The reproductive biology of the Manila clam, Ruditapes philippinarum, from the North-West of Ireland[J].Aquaculture,2006,254(1/2/3/4):326-340. [10]柯巧珍,李琪,闫红伟,等.山东北部沿海四角蛤蜊性腺发育年周期研究[J].中国海洋大学学报(自然科学版),2012,42(11):28-34. [11]Chung E Y, Ryou D K. Gametogenesis and sexual maturation of the surf clam Mactra veneriformis on the west coast of Korea [J].Malacologia,2000,42:149-163. [12]Iwata K S. Artificial discharge of reproductive substances by K-salts injection in Mactra veneriformis (bivalves)[J].Nippon Suisan Gakkaishi,1948,13(5):188-192. [13]Oshima Y T, Sudo T, Hanaoka J, et al. Shallow sea aquaculture [M].Tokyo: Daisei Publishing Co.,Ltd.,1965:252-253. [14]项福椿.辽宁沿海四角蛤蜊生殖与生长及其开发养殖技术的探讨[J].水产科学,1991,10(4):16-19. [15]Walne P R. Experiments on the culture in the sea of the butterfish Venerupis decussata L.[J].Aquaculture,1976,8(4):371-381. [16]Taylor A C, Venn T J. Seasonal variation in weight and biochemical composition of the tissues of the queen scallop, Chlamys opercularis, from the Clyde Sea area[J].Journal of the Marine Biological Association of the United Kingdom,1979,59(3):605-621. [17]Park M S, Kang C K, Lee P Y. Reproductive cycle and biochemical composition of the ark shell Scapharca broughtonii (Schrenck) in a southern coastal bay of Korea[J].Journal of Shellfish Research,2001,20(1):177-184. [18]吴洪流,王红勇,王珺.波纹巴非蛤性腺发育分期的研究[J].海南大学学报(自然科学版),2002,20(1):41-47. [19]Kim S K, Rosenthal H, Clemmesen C, et al. Various methods to determine the gonadal development and spawning season of the purplish Washington clam,Saxidomus purpuratus (Sowerby)[J].Journal of Applied Ichthyology,2005,21(2):101-106. [20]O′Connor W A, Heasman M P. Spawning induction and fertilisation in the doughboy scallop Chlamys (Mimachlamys) asperrima[J].Aquaculture,1995,136(1/2):117-129. [21]安立会,雷坤,刘颖,等.辽东湾野生四角蛤蜊性畸变调查[J].中国环境科学,2014,34(1):259-265.