DOI: 10.1111/gcb.12926
论文题名: Contrasting effects of climate on juvenile body size in a Southern Hemisphere passerine bird
作者: Kruuk L.E.B. ; Osmond H.L. ; Cockburn A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 8 起始页码: 2929
结束页码: 2941
语种: 英语
英文关键词: Malurus cyaneus
; Australia
; Body mass
; Climate change
; Heatwave
; Maternal effects
; Maximum temperature
; Rainfall
; Superb fairy-wren
Scopus关键词: body mass
; body size
; climate change
; global warming
; juvenile
; maternal effect
; passerine
; rainfall
; Southern Hemisphere
; wild population
; Australia
; Animalia
; Aves
; Malurus cyaneus
; Passeriformes
; Troglodytinae
; rain
; anatomy and histology
; animal
; body size
; climate
; climate change
; female
; male
; newborn
; songbird
; South Australia
; temperature
; theoretical model
; Animals
; Animals, Newborn
; Body Size
; Climate
; Climate Change
; Female
; Male
; Models, Theoretical
; Rain
; Songbirds
; South Australia
; Temperature
英文摘要: Despite extensive research on the topic, it has been difficult to reach general conclusions as to the effects of climate change on morphology in wild animals: in particular, the effects of warming temperatures have been associated with increases, decreases or stasis in body size in different populations. Here, we use a fine-scale analysis of associations between weather and offspring body size in a long-term study of a wild passerine bird, the cooperatively breeding superb fairy-wren, in south-eastern Australia to show that such variation in the direction of associations occurs even within a population. Over the past 26 years, our study population has experienced increased temperatures, increased frequency of heatwaves and reduced rainfall - but the mean body mass of chicks has not changed. Despite the apparent stasis, mass was associated with weather across the previous year, but in multiple counteracting ways. Firstly, (i) chick mass was negatively associated with extremely recent heatwaves, but there also positive associations with (ii) higher maximum temperatures and (iii) higher rainfall, both occurring in a period prior to and during the nesting period, and finally (iv) a longer-term negative association with higher maximum temperatures following the previous breeding season. Our results illustrate how a morphological trait may be affected by both short- and long-term effects of the same weather variable at multiple times of the year and that these effects may act in different directions. We also show that climate within the relevant time windows may not be changing in the same way, such that overall long-term temporal trends in body size may be minimal. Such complexity means that analytical approaches that search for a single 'best' window for one particular weather variable may miss other relevant information, and is also likely to make analyses of phenotypic plasticity and prediction of longer-term population dynamics difficult. © 2015 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61809
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Division of Evolution, Ecology and Genetics, Research School of Biology, The Australian National University, Canberra, ACT, Australia; Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
Recommended Citation:
Kruuk L.E.B.,Osmond H.L.,Cockburn A.. Contrasting effects of climate on juvenile body size in a Southern Hemisphere passerine bird[J]. Global Change Biology,2015-01-01,21(8)