Role of intraspecific competition in intrinsic growth rate regulation in anOikopleura dioica(Tunicata) population

doi:10.1007/s00343-020-0071-0

	Role of intraspecific competition in intrinsic growth rate regulation in anOikopleura dioica(Tunicata) population
	Li, Shuai 1,2; Zhang, Guangtao1,2,3
	2020-07-08
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
页码	14
摘要	PlanktonicOikopleura dioicarespond almost instantly to opportunistic algal blooms, but it is unknown whether the population increase can change from an exponential to a logistic model to avoid a final sudden collapse. To test the hypothesis that intraspecific competition regulates the intrinsic rate of natural increase (r), density-dependent effects on growth and reproduction performance were investigated inO. dioicavia laboratory incubations. Over a large food concentration range, batch maturation was observed above the per capita food supply (PFS) of 8.1 mu gC/ind. in 4.5 d. Somatic growth was saturated beyond this PFS value, whereas gonad length increased continuously. Below this threshold, individuals reached small body and gonad lengths, and maturation was rarely observed during the incubation period. The gonad/body volume and maturation ratios also increased with the PFS. Instead of the food concentration, thervalues were regulated by competition pressure via variability in maturation duration and the proportion of mature individuals in the cohorts. When the minimum food demand was satisfied in the designated generation time, thervalue tended to be regulated by the spawning proportion in the population. Otherwise, prolonged development duration and decreasedrvalues were expected.
关键词	Oikopleura dioica population size intraspecific competition growth fecundity r(max)
DOI	10.1007/s00343-020-0071-0
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050401] ; National Key Research and Development Program of China[2017YFE0111100] ; National Key Basic Research Program of China (973 Program)[2015CB452903] ; Science and Technology Service Network (STS)[Y82346101L] ; Taishan Scholars Project
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000546525000006
出版者	SCIENCE PRESS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/167844
专题	胶州湾海洋生态系统国家野外研究站
通讯作者	Zhang, Guangtao
作者单位	1.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Natl Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Li, Shuai,Zhang, Guangtao. Role of intraspecific competition in intrinsic growth rate regulation in anOikopleura dioica(Tunicata) population[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2020:14.
APA	Li, Shuai,&Zhang, Guangtao.(2020).Role of intraspecific competition in intrinsic growth rate regulation in anOikopleura dioica(Tunicata) population.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,14.
MLA	Li, Shuai,et al."Role of intraspecific competition in intrinsic growth rate regulation in anOikopleura dioica(Tunicata) population".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2020):14.

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文件名称/大小	文献类型	版本类型	开放类型	使用许可
Role of intraspecifi（1367KB）	期刊论文	作者接受稿	限制开放	CC BY-NC-SA	浏览