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

doi:10.1007/s00343-020-0071-0

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	Role of intraspecific competition in intrinsic growth rate regulation in anOikopleura dioica(Tunicata) population
	Li, Shuai 1,3; Zhang, Guangtao 1,2,3
刊名	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2020-07-08
页码	14
关键词	Oikopleura dioica population size intraspecific competition growth fecundity r(max)
ISSN号	2096-5508
DOI	10.1007/s00343-020-0071-0
英文摘要	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.
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
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000546525000006
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.qdio.ac.cn/handle/337002/167843]
专题	海洋研究所_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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Natl Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China
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.