Impacts of HAB species Heterosigma akashiwo on early development of the scallop Argopecten irradians Lamarck

doi:10.1016/j.aquaculture.2005.11.057

	Impacts of HAB species Heterosigma akashiwo on early development of the scallop Argopecten irradians Lamarck
	Wang, Liping; Yan, Tian; Zhou, Mingjiang
	2006-05-31
发表期刊	AQUACULTURE
ISSN	0044-8486
卷号	255 期号:1-4 页码:374-383
文章类型	Article
摘要	The effects of Heterosigma akashiwo on the early development of Argopecten irradians Lamarck: eggs, D-shaped larvae, eye-spot larvae and juveniles, were investigated under laboratory conditions. Exposing fertilized eggs to various densities of H. akashiwo algal culture revealed that the development of the embryos to the gastrula was significantly slowed at densities of more than 1 X 10(4) cells/ml algal cells, and mostly was arrested when the embryos reached the trochophore larvae stage. At this stage, several trochophore larvae were adhered together by the algal cells, resulting in the inhibition of their swimming activity. Larvae had still not developed into D-shaped larvae after 30 h, and therefore did not finish the hatching process. The attachment and adherence of the algal cells to the larvae might be an important process in the mechanism of the impact on egg hatching success.; The effects of Heterosigma akashiwo on the early development of Argopecten irradians Lamarck: eggs, D-shaped larvae, eye-spot larvae and juveniles, were investigated under laboratory conditions. Exposing fertilized eggs to various densities of H. akashiwo algal culture revealed that the development of the embryos to the gastrula was significantly slowed at densities of more than 1 X 10(4) cells/ml algal cells, and mostly was arrested when the embryos reached the trochophore larvae stage. At this stage, several trochophore larvae were adhered together by the algal cells, resulting in the inhibition of their swimming activity. Larvae had still not developed into D-shaped larvae after 30 h, and therefore did not finish the hatching process. The attachment and adherence of the algal cells to the larvae might be an important process in the mechanism of the impact on egg hatching success. The activity of the D-shaped larvae was significantly inhibited after 48 h exposure to H. akashiwo at a density of 15 X 10(4) cells/ml and after 96 h at 10 X 10(4) cells/ml. The survival rate of the eye-spot larvae was decreased significantly after 48 h exposure to the algal culture at densities of more than 1 X 10(4) cells/ml. However, all the juveniles could survive and their climbing and attachment activity were not affected after 1 and 5 h exposure to the algal culture at all the various algal cell densities tested from 5 to 20 X 10(4) cells/ml. The results indicated that susceptibility of embryos or larvae to the alga H. akashiwo differs depending on the developmental stage. The embryos and the eye-spot larvae of A. irradians are more sensitive stages to the toxicity of H. akashiwo. Observed effects of H. akashiwo exposure on early development of A. irradians serve to point out to the potential danger of this alga for scallop populations. The possible toxicological mechanisms of H. akashiwo on the scallop embryos and larvae are discussed. (c) 2005 Elsevier B.V All rights reserved.
关键词	Heterosigma Akashiwo Argopecten Irradians Lamarck Eggs Hatching Success Early Development
学科领域	Fisheries ; Marine & Freshwater Biology
DOI	10.1016/j.aquaculture.2005.11.057
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000238457300039
引用统计	被引频次：29[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/5470
专题	海洋生态与环境科学重点实验室
作者单位	Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Wang, Liping,Yan, Tian,Zhou, Mingjiang. Impacts of HAB species Heterosigma akashiwo on early development of the scallop Argopecten irradians Lamarck[J]. AQUACULTURE,2006,255(1-4):374-383.
APA	Wang, Liping,Yan, Tian,&Zhou, Mingjiang.(2006).Impacts of HAB species Heterosigma akashiwo on early development of the scallop Argopecten irradians Lamarck.AQUACULTURE,255(1-4),374-383.
MLA	Wang, Liping,et al."Impacts of HAB species Heterosigma akashiwo on early development of the scallop Argopecten irradians Lamarck".AQUACULTURE 255.1-4(2006):374-383.

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