干旱区生态环境知识资源中心(Arid): EFFECTS OF SHORT-TERM, OUTDOOR HEAD-STARTING ON GROWTH AND SURVIVAL IN THE MOJAVE DESERT TORTOISE (GOPHERUS AGASSIZII)

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	EFFECTS OF SHORT-TERM, OUTDOOR HEAD-STARTING ON GROWTH AND SURVIVAL IN THE MOJAVE DESERT TORTOISE (GOPHERUS AGASSIZII)
	Tuberville, Tracey D.1; Buhlmann, Kurt A.1; Sollmann, Rahel 2; Nafus, Melia G.2,3; Peaden, J. Mark 2; Daly, Jacob A.1,4; Todd, Brian D.2
通讯作者	Tuberville, Tracey D.
来源期刊	HERPETOLOGICAL CONSERVATION AND BIOLOGY
ISSN	2151-0733
EISSN	1931-7603
出版年	2019
卷号	14 期号:1 页码:171-184
英文摘要	The combination of life-history traits that makes some turtle species vulnerable to population declines also limits their ability to recover even after threats have been addressed. Because juvenile turtle survival is typically lower than adult survival, head-starting, the process of rearing juveniles through one of their most vulnerable periods, may be a useful recovery tool. We evaluated short-term, outdoor head-starting in Mojave Desert Tortoises (Gopherus agassizii) by comparing growth and survival among three treatments: (1) juveniles reared in outdoor predator-resistant enclosures and receiving low (LOW) or (2) high levels of rain supplementation (HIGH); and (3) free-ranging animals released 0-18 mo after hatching (FIELD). Juveniles from the HIGH treatment had higher annual growth (12.7 mm midline carapace length [MCL] per year) than juveniles from the LOW or FIELD treatments (10.7 mm). Annual growth also varied among years, presumably due to variation in rainfall. Annual survival was high (0.94 +/- 0.01) for both LOW and HIGH treatments; MCL at hatching had a weak positive effect on survival probability (effect size: 0.42 +/- 0.35). Annual survival of FIELD animals averaged 0.48 +/- 0.09. There was no effect of size at release (40.8-61.5 mm MCL) on post-release survival of FIELD animals, suggesting that the greatest benefit of short-term outdoor head-starting is increasing survival during the head-start period. Although releasing at larger sizes (100 mm MCL) has been recommended, slow growth in tortoises would require extended outdoor head-starting periods. Indoor rearing, which has been successfully implemented with other turtle species, may increase growth rates of juvenile Desert Tortoises and warrants future study as a conservation technique.
英文关键词	Mojave Desert population manipulations species recovery Testudinidae
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000466559700015
WOS关键词	FRESH-WATER TURTLE ; EMYDOIDEA-BLANDINGII ; JUVENILE DESERT ; BODY CONDITION ; POPULATION ; MANAGEMENT ; SIZE ; SURVIVORSHIP ; CONSERVATION ; MORTALITY
WOS类目	Zoology
WOS研究方向	Zoology
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/2XILL650/216119
作者单位	1.Univ Georgia, Savannah River Ecol Lab, Post Off Drawer E, Aiken, SC 29802 USA; 2.Univ Calif Davis, Dept Wildlife Fish & Conservat Biol, One Shields Ave, Davis, CA 95616 USA; 3.US Geol Survey, Ft Collins Sci Ctr, 2150 Ctr Ave,Bldg C, Ft Collins, CO 80526 USA; 4.Pk Reserve Forces Training Area, Directorate Publ Works, Environm Div, Dublin, CA 94568 USA
推荐引用方式 GB/T 7714	Tuberville, Tracey D.,Buhlmann, Kurt A.,Sollmann, Rahel,et al. EFFECTS OF SHORT-TERM, OUTDOOR HEAD-STARTING ON GROWTH AND SURVIVAL IN THE MOJAVE DESERT TORTOISE (GOPHERUS AGASSIZII)[J]. United States Geological Survey, University of California, Davis,2019,14(1):171-184.
APA	Tuberville, Tracey D..,Buhlmann, Kurt A..,Sollmann, Rahel.,Nafus, Melia G..,Peaden, J. Mark.,...&Todd, Brian D..(2019).EFFECTS OF SHORT-TERM, OUTDOOR HEAD-STARTING ON GROWTH AND SURVIVAL IN THE MOJAVE DESERT TORTOISE (GOPHERUS AGASSIZII).HERPETOLOGICAL CONSERVATION AND BIOLOGY,14(1),171-184.
MLA	Tuberville, Tracey D.,et al."EFFECTS OF SHORT-TERM, OUTDOOR HEAD-STARTING ON GROWTH AND SURVIVAL IN THE MOJAVE DESERT TORTOISE (GOPHERUS AGASSIZII)".HERPETOLOGICAL CONSERVATION AND BIOLOGY 14.1(2019):171-184.