干旱区生态环境知识资源中心(Arid): 'Unscrambling' the drivers of egg production in Agassiz's desert tortoise: climate and individual attributes predict reproductive output

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DOI	10.3354/esr01103
	'Unscrambling' the drivers of egg production in Agassiz's desert tortoise: climate and individual attributes predict reproductive output
	Mitchell, Corey, I; Friend, Derek A.; Phillips, Lauren T.; Hunter, Elizabeth A.; Lovich, Jeffrey E.; Agha, Mickey; Puffer, Shellie R.; Cummings, Kristy L.; Medica, Philip A.; Esque, Todd C.; Nussear, Kenneth E.; Shoemaker, Kevin T.
通讯作者	Mitchell, CI (corresponding author), Univ Nevada, Dept Geog, Reno, NV 89557 USA. ; Mitchell, CI (corresponding author), Desert Ctr Ecol LLC, Tucson, AZ 85716 USA.
来源期刊	ENDANGERED SPECIES RESEARCH
ISSN	1863-5407
EISSN	1613-4796
出版年	2021
卷号	44 页码:217-230
英文摘要	The 'bet hedging' life history strategy of long-lived iteroparous species reduces short-term reproductive output to minimize the risk of reproductive failure over a lifetime. For desert-dwelling ectotherms living in variable and unpredictable environments, reproductive output is further influenced by precipitation and temperature via effects on food availability and limits on activity. We assembled multiple (n = 12) data sets on egg production for the threatened Agassiz's desert tortoise Gopherus agassizii across its range and used these data to build a range-wide predictive model of annual reproductive output as a function of annual weather variation and individual-level attributes (body size and prior-year reproductive status). Climate variables were more robust predictors of reproductive output than individual-level attributes, with overall reproductive output positively related to prior-year precipitation and an earlier start to the spring activity season, and negatively related to spring temperature extremes (monthly temperature range in March-April). Reproductive output was highest for individuals with larger body sizes that reproduced in the previous year. Expected annual reproductive output from 1990-2018 varied from 2-5 to 6-12 eggs female(-1) yr(-1), with a weak decline in expected reproductive output over this time (p = 0.02). Climate-driven environmental variation in expected reproductive output was highly correlated across all 5 Recovery Units for this species (Pearson's r > 0.9). Overall, our model suggests that climate change could strongly impact the reproductive output of Agassiz's desert tortoise, and could have a negative population-level effect if precipitation is significantly reduced across the species' range as predicted under some climate models.
英文关键词	Gopherus agassizii Climate change Fecundity Population ecology Meta-analysis
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000649277100015
WOS关键词	GOPHERUS-AGASSIZII ; PHYSIOLOGICAL ECOLOGY ; SPECIES DISTRIBUTION ; CLUTCH PHENOLOGY ; LIFE-HISTORY ; CONSERVATION ; SURVIVAL ; HABITAT ; SUCCESS ; MODELS
WOS类目	Biodiversity Conservation
WOS研究方向	Biodiversity & Conservation
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350066
作者单位	[Mitchell, Corey, I; Friend, Derek A.; Phillips, Lauren T.; Nussear, Kenneth E.] Univ Nevada, Dept Geog, Reno, NV 89557 USA; [Hunter, Elizabeth A.] Georgia Southern Univ, Dept Biol, Statesboro, GA 30460 USA; [Lovich, Jeffrey E.; Puffer, Shellie R.; Cummings, Kristy L.] US Geol Survey, Southwest Biol Sci Ctr, Flagstaff, AZ 86001 USA; [Agha, Mickey] Washington Dept Fish & Wildlife, Olympia, WA 98501 USA; [Medica, Philip A.; Esque, Todd C.] US Geol Survey, Western Ecol Res Ctr, Henderson, NV 89074 USA; [Shoemaker, Kevin T.] Univ Nevada, Dept Nat Resources & Environm Sci, Reno, NV 89557 USA; [Mitchell, Corey, I] Desert Ctr Ecol LLC, Tucson, AZ 85716 USA
推荐引用方式 GB/T 7714	Mitchell, Corey, I,Friend, Derek A.,Phillips, Lauren T.,et al. 'Unscrambling' the drivers of egg production in Agassiz's desert tortoise: climate and individual attributes predict reproductive output[J]. United States Geological Survey,2021,44:217-230.
APA	Mitchell, Corey, I.,Friend, Derek A..,Phillips, Lauren T..,Hunter, Elizabeth A..,Lovich, Jeffrey E..,...&Shoemaker, Kevin T..(2021).'Unscrambling' the drivers of egg production in Agassiz's desert tortoise: climate and individual attributes predict reproductive output.ENDANGERED SPECIES RESEARCH,44,217-230.
MLA	Mitchell, Corey, I,et al."'Unscrambling' the drivers of egg production in Agassiz's desert tortoise: climate and individual attributes predict reproductive output".ENDANGERED SPECIES RESEARCH 44(2021):217-230.