干旱区生态环境知识资源中心(Arid): The Effect of Size on Postrelease Survival of Head-Started Mojave Desert Tortoises

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DOI	10.3996/JFWM-20-014
	The Effect of Size on Postrelease Survival of Head-Started Mojave Desert Tortoises
	McGovern, Pearson A.; Buhlmann, Kurt A.; Todd, Brian D.; Moore, Clinton T.; Peaden, J. Mark; Hepinstall-Cymerman, Jeffrey; Daly, Jacob A.; Tuberville, Tracey D.
通讯作者	Tuberville, TD (corresponding author), Univ Georgia, Savannah River Ecol Lab, PO Drawer E, Aiken, SC 29802 USA.
来源期刊	JOURNAL OF FISH AND WILDLIFE MANAGEMENT
ISSN	1944-687X
出版年	2020
卷号	11 期号:2 页码:494-506
英文摘要	Captive-rearing conservation programs focus primarily on maximizing postrelease survival. Survival increases with size in a variety of taxa, often leading to the use of enhanced size as a means to minimize postrelease losses. Head-starting is a specific captive-rearing approach used to accelerate growth in captivity prior to release in the wild. We explored the effect of size at release, among other potential factors, on postrelease survival in head-started Mojave desert tortoises Gopherus agassizii. Juvenile tortoises were reared for different durations of captivity (2-7 y) and under varying husbandry protocols, resulting in a wide range of juvenile sizes (68-145 mm midline carapace length) at release. We released all animals (n = 78) in the Mojave National Preserve, California, United States, on 25 September 2018. Release size and surface activity were the only significant predictors of fate during the first year postrelease. Larger sized head-starts had higher predicted survival rates when compared with smaller individuals. This trend was also observed in animals of the same age but reared under different protocols, suggesting that accelerating the growth of head-started tortoises may increase efficiency of head-starting programs without decreasing postrelease success. Excluding five missing animals, released head-starts had 82.2% survival in their first year postrelease (September 2018-September 2019), with all mortalities resulting from predation. No animals with >90-mm midline carapace length were predated by ravens. Our findings suggest the utility of head-starting may be substantially improved by incorporating indoor rearing to accelerate growth. Target release size for head-started chelonians will vary among head-start programs based on release site conditions and project-specific constraints.
英文关键词	desert tortoise species recovery head-starting size survival
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:000658726700011
WOS关键词	LONG-TERM CAPTIVITY ; HABITAT SELECTION ; GROWTH-RATE ; INCUBATION-TEMPERATURE ; EMYDOIDEA-BLANDINGII ; REPRODUCTIVE OUTPUT ; SNAPPING TURTLE ; PAINTED TURTLES ; BODY CONDITION ; GOPHERUS
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构	United States Geological Survey ; University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348984
作者单位	[McGovern, Pearson A.; Buhlmann, Kurt A.; Tuberville, Tracey D.] Univ Georgia, Savannah River Ecol Lab, PO Drawer E, Aiken, SC 29802 USA; [McGovern, Pearson A.] African Chelonian Inst, Ngazobil, Senegal; [McGovern, Pearson A.; Hepinstall-Cymerman, Jeffrey] Univ Georgia, Warnell Sch Forestry & Nat Resources, 180 E Green St, Athens, GA 30602 USA; [Todd, Brian D.; Peaden, J. Mark] Univ Calif Davis, Dept Wildlife Fish & Conservat Biol, One Shields Ave, Davis, CA 95616 USA; [Moore, Clinton T.] Univ Georgia, US Geol Survey, Georgia Cooperat Fish & Wildlife Res Unit, Warnell Sch Forestry & Nat Resources, 180 E Green St, Athens, GA 30602 USA; [Peaden, J. Mark] Rogers State Univ, Dept Biol, 1701 W Will Rogers Blvd, Claremore, OK 74017 USA; [Daly, Jacob A.] US Army Garrison Ft Hunter Liggett, Directorate Publ Works, Environm Div, Ft Hunter Liggett, CA 93928 USA
推荐引用方式 GB/T 7714	McGovern, Pearson A.,Buhlmann, Kurt A.,Todd, Brian D.,et al. The Effect of Size on Postrelease Survival of Head-Started Mojave Desert Tortoises[J]. United States Geological Survey, University of California, Davis,2020,11(2):494-506.
APA	McGovern, Pearson A..,Buhlmann, Kurt A..,Todd, Brian D..,Moore, Clinton T..,Peaden, J. Mark.,...&Tuberville, Tracey D..(2020).The Effect of Size on Postrelease Survival of Head-Started Mojave Desert Tortoises.JOURNAL OF FISH AND WILDLIFE MANAGEMENT,11(2),494-506.
MLA	McGovern, Pearson A.,et al."The Effect of Size on Postrelease Survival of Head-Started Mojave Desert Tortoises".JOURNAL OF FISH AND WILDLIFE MANAGEMENT 11.2(2020):494-506.