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Marine Biotechnology

, Volume 2, Issue 5, pp 466–475 | Cite as

Triploid and Tetraploid Zhikong Scallop, Chlamys farreri Jones et Preston, Produced by Inhibiting Polar Body I

  • Huiping  Yang
  • Fusui  Zhang
  • Ximing  Guo

Abstract:

Triploid scallops are valuable for aquaculture because of their enlarged adductor muscle, and tetraploids are important for the commercial production of triploids. We tested tetraploid induction in the zhikong scallop by inhibiting polar body I in newly fertilized eggs. The ploidy of resultant embryos was determined by chromosome counting at 2- to 4-cell stage and by flow cytometry thereafter. Embryos from the control groups were mostly diploids (79%), along with some aneuploids. Embryos from the treated groups were 13% diploids, 18% triploids, 26% tetraploids, 13% pentaploids, and 36% aneuploids. Tetraploids, pentaploids, and most aneuploids suffered heavy mortality during the first week and became undetectable among the larvae at day 14. Five tetraploids (2%) were found among a sample of 267 spat from one of the replicates, and none was detected at day 450. The adductor muscle of triploid scallops was 44% heavier (P < .01) than that of diploids, confirming the value of the triploid technology in this species.

Key words: triploid, tetraploid, aneuploid, polar body I, cytochalasin B, scallop, aquaculture. 

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Copyright information

© Springer-Verlag New York Inc. 2000

Authors and Affiliations

  • Huiping  Yang
    • 1
  • Fusui  Zhang
    • 1
  • Ximing  Guo
    • 2
  1. 1.Experimental Marine Biology Laboratory, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, Shandong 266071, ChinaCN
  2. 2.Haskin Shellfish Research Laboratory, Institute of Marine and Coastal Sciences, Rutgers University, 6959 Miller Avenue, Port Norris, NJ 08349, U.S.A.US

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