干旱区生态环境知识资源中心(Arid): Egg investment strategies adopted by a desertic passerine, the Saxaul Sparrow (Passer ammodendri)

Arid

	Egg investment strategies adopted by a desertic passerine, the Saxaul Sparrow (Passer ammodendri)
	Bao Xinkang; Zhao Wei; Liu Fangqing; Li Jianliang; Ma Donghui
来源期刊	鸟类学研究
ISSN	2055-6187
出版年	2020
卷号	11 期号:2
英文摘要	Background: As one of the reproductive strategies adopted by bird species, variation in investment in egg production and its influencing factors are important and well-studied subjects. Intraclutch changes in egg size associated with laying order may reflect a strategy of brood survival or brood reduction adopted by female birds in different situations.Methods: We conducted field studies on the breeding parameters of the Saxaul Sparrow (Passer ammodendri) in Gansu Province, China from 2010 to 2017, to clarify the factors affecting the egg investment and reproductive perfor-mance of this passerine species.Results: Our results revealed significant differences in clutch size, egg size and the fledging rate between the first and second brood of Saxaul Sparrows and suggested that this typical desert species allocates more breeding resources to the more favourable second brood period, leading to greater reproductive output. Female body size pre-sented a positive relationship with egg size, and male body size presented positive relationships with clutch size and hatchability. The females that started their clutches later laid more eggs, and hatchability and the fledging rate also increased with a later laying date in the first brood period. With successive eggs laid within the 5-egg clutches (the most frequent clutch size), egg size increased for the first three eggs and then significantly decreased.Conclusions: Our results indicate that female Saxaul Sparrows increased egg investment because of good quality of paired males and good environmental conditions. The intraclutch variation of egg size suggests that this species inhabiting an arid environment adopts a brood reduction strategy.
英文关键词	Brood reduction strategy Clutch size Egg size Fledging rate Hatchability Reproductive strategy Saxaul Sparrow
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Zoology
CSCD记录号	CSCD:6843638
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353665
推荐引用方式 GB/T 7714	Bao Xinkang,Zhao Wei,Liu Fangqing,et al. Egg investment strategies adopted by a desertic passerine, the Saxaul Sparrow (Passer ammodendri)[J],2020,11(2).
APA	Bao Xinkang,Zhao Wei,Liu Fangqing,Li Jianliang,&Ma Donghui.(2020).Egg investment strategies adopted by a desertic passerine, the Saxaul Sparrow (Passer ammodendri).鸟类学研究,11(2).
MLA	Bao Xinkang,et al."Egg investment strategies adopted by a desertic passerine, the Saxaul Sparrow (Passer ammodendri)".鸟类学研究 11.2(2020).