干旱区生态环境知识资源中心(Arid): Rotifer adaptation to the unpredictability of the growing season

Arid

DOI	10.1007/s10750-019-3886-y
	Rotifer adaptation to the unpredictability of the growing season
	Franch-Gras, Lluis; Tarazona, Eva; Garcia-Roger, Eduardo M.; Jose Carmona, Maria; Gomez, Africa; Serra, Manuel
通讯作者	Serra, M (corresponding author), Univ Valencia, Cavanilles Inst Biodivers & Evolutionary Biol, AO 2085, E-46071 Valencia, Spain.
会议名称	15th International Rotifer Symposium (IRS)
会议日期	JUN 03-09, 2018
会议地点	Univ Texas El Paso, El Paso, TX
英文摘要	Sexual reproduction in cyclically parthenogenetic rotifers results in the production of diapausing eggs that tolerate harsh conditions. Theory predicts that the adaptation to environmental unpredictability can occur by the evolution of bet-hedging strategies. When facing unpredictability in the length of rotifer growing season, patterns of diapausing egg production and hatching can disperse risks and act as bet-hedging strategies. Here, we identified the methodologies to test bet-hedging theory and summarized predictions on rotifer diapause traits. We assessed these predictions by reviewing and reanalyzing results from other studies on field and experimentally evolving populations of Brachionus plicatilis from Spanish ponds. These studies include (1) a quantification of the unpredictability in field populations, (2) the measurement of diapause-related traits in laboratory conditions, and (3) genomic data. The view arising is that these rotifers adaptively respond to the unpredictability in their localities. As expected, propensity for sex increased with unpredictability. Hatching fractions of diapausing eggs were intermediate and decreased with unpredictability only in experimentally evolving populations. In field populations, genetic variance in the focal traits did not increase with unpredictability. Finally, environmental features and diapause-related traits are associated to suites of specific genes, although the molecular mechanisms linking these genes with life history are still unknown.
英文关键词	Bet hedging Cyclical parthenogenesis Dormancy Sexual reproduction Temporary habitats Time-varying environments Propensity for sex Diapausing egg hatching fraction Genomic analysis Local adaptation SNPs
来源出版物	HYDROBIOLOGIA
ISSN	0018-8158
EISSN	1573-5117
出版年	2019
卷号	844
期号	1
页码	257-273
出版者	SPRINGER
类型	Article; Proceedings Paper
语种	英语
收录类别	CPCI-S
WOS记录号	WOS:000494482800020
WOS关键词	MICTIC FEMALE PRODUCTION ; BET-HEDGING GERMINATION ; LIFE-HISTORY TRAITS ; SEXUAL REPRODUCTION ; DESERT ANNUALS ; CYCLICAL PARTHENOGENS ; POPULATION-DENSITY ; EMPIRICAL-EVIDENCE ; NATURAL-SELECTION ; BRACHIONUS
WOS类目	Marine & Freshwater Biology
WOS研究方向	Marine & Freshwater Biology
资源类型	会议论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369953
作者单位	[Franch-Gras, Lluis; Tarazona, Eva; Garcia-Roger, Eduardo M.; Jose Carmona, Maria; Serra, Manuel] Univ Valencia, Cavanilles Inst Biodivers & Evolutionary Biol, AO 2085, E-46071 Valencia, Spain; [Gomez, Africa] Univ Hull, Sch Environm Sci, Kingston Upon Hull HU6 7RX, N Humberside, England
推荐引用方式 GB/T 7714	Franch-Gras, Lluis,Tarazona, Eva,Garcia-Roger, Eduardo M.,et al. Rotifer adaptation to the unpredictability of the growing season[C]:SPRINGER,2019:257-273.