干旱区生态环境知识资源中心(Arid): Delayed mortality of males in Thylamys bruchi, a semelparous marsupial from the Monte Desert, Argentina

Arid

DOI	10.1093/jmammal/gyaa139
	Delayed mortality of males in Thylamys bruchi, a semelparous marsupial from the Monte Desert, Argentina
	Soledad Albanese, M.; Ojeda, Ricardo A.; Astie, Andrea A.
通讯作者	Albanese, MS (corresponding author), Inst Argentino Invest Zonas Aridas IADIZA CONICET, Av Ruiz Leal S-N,Parque Gral San Martin, RA-5500 Mendoza, Argentina. ; Albanese, MS (corresponding author), CCT Mendoza CONICET, IADIZA, Grp Invest Biodiversidad GiB, Av Ruiz Leal S-N,Parque Gral San Martin, RA-5500 Mendoza, Argentina.
来源期刊	JOURNAL OF MAMMALOGY
ISSN	0022-2372
EISSN	1545-1542
出版年	2021
卷号	102 期号:1 页码:258-269
英文摘要	Male-only obligate semelparity is a well-studied reproductive strategy in some Australian marsupials. This strategy has not been documented in South American species, although semelparity in both sexes occurs in some Neotropical didelphids. The fat-tailed mouse opossum, Thylamys bruchi, is an endemic species of the temperate Monte Desert, in Argentina. Seasonality and predictability of resources are two of the attributes associated with habitats where marsupial semelparity has evolved, and both are characteristic of the Monte Desert. We aimed to characterize the life-history strategy of T. bruchi to explore if it can be considered a semelparous species. We studied a fat-tailed mouse opossum population for 7 years with two different capture techniques (Sherman traps and nest boxes). Thylamys bruchi showed strong seasonality in abundance, with the highest captures during summer and autumn. Reproduction and weaning coincided with the most favorable period of the year with respect to climate and resource availability. Every year we observed a single cohort with little overlap until weaning of young. After breeding, all adults disappeared from the population; however, unlike any other didelphids, males showed delayed mortality and died, along with females, after weaning. We found no evidence of survival to a second breeding season for either sex. We therefore propose T. bruchi as a desert-dwelling marsupial with a semelparous reproductive strategy. Because the severity of winters may be acting as an important constraint on the energetic balance of adults in this population, we propose that challenging climatic conditions, coupled with the seasonality and high predictability of food resources, may have contributed to the evolution of the extreme reproductive strategy in this didelphid marsupial.
英文关键词	delayed mortality deserts life history Monte mouse opossum Neotropical marsupials reproductive strategy seasonality semelparity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000637298000021
WOS类目	Zoology
WOS研究方向	Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350936
作者单位	[Soledad Albanese, M.; Ojeda, Ricardo A.; Astie, Andrea A.] Inst Argentino Invest Zonas Aridas IADIZA CONICET, Av Ruiz Leal S-N,Parque Gral San Martin, RA-5500 Mendoza, Argentina; [Soledad Albanese, M.; Ojeda, Ricardo A.] CCT Mendoza CONICET, IADIZA, Grp Invest Biodiversidad GiB, Av Ruiz Leal S-N,Parque Gral San Martin, RA-5500 Mendoza, Argentina
推荐引用方式 GB/T 7714	Soledad Albanese, M.,Ojeda, Ricardo A.,Astie, Andrea A.. Delayed mortality of males in Thylamys bruchi, a semelparous marsupial from the Monte Desert, Argentina[J],2021,102(1):258-269.
APA	Soledad Albanese, M.,Ojeda, Ricardo A.,&Astie, Andrea A..(2021).Delayed mortality of males in Thylamys bruchi, a semelparous marsupial from the Monte Desert, Argentina.JOURNAL OF MAMMALOGY,102(1),258-269.
MLA	Soledad Albanese, M.,et al."Delayed mortality of males in Thylamys bruchi, a semelparous marsupial from the Monte Desert, Argentina".JOURNAL OF MAMMALOGY 102.1(2021):258-269.