DOI: 10.1111/gcb.12720
论文题名: Warmer winters reduce frog fecundity and shift breeding phenology, which consequently alters larval development and metamorphic timing
作者: Benard M.F.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 3 起始页码: 1058
结束页码: 1065
语种: 英语
英文关键词: Amphibian
; Climate
; Conservation
; Development
; Metamorphosis
; Phenology
Scopus关键词: climate change
; fecundity
; frog
; larval development
; metamorphosis
; phenology
; reproductive behavior
; species conservation
; winter
; Amphibia
; Anura
; Rana sylvatica
; animal
; climate change
; female
; fertility
; growth, development and aging
; larva
; metamorphosis
; physiology
; Ranidae
; reproduction
; season
; United States
; Animals
; Climate Change
; Female
; Fertility
; Larva
; Metamorphosis, Biological
; Michigan
; Ranidae
; Reproduction
; Seasons
英文摘要: One widely documented phenological response to climate change is the earlier occurrence of spring-breeding events. While such climate change-driven shifts in phenology are common, their consequences for individuals and populations have rarely been investigated. I addressed this gap in our knowledge by using a multi-year observational study of six wood frog (Rana sylvatica) populations near the southern edge of their range. I tested first if winter temperature or precipitation affected the date of breeding and female fecundity, and second if timing of breeding affected subsequent larval development rate, mass at metamorphosis, date of metamorphosis, and survival. Warmer winters were associated with earlier breeding but reduced female fecundity. Winter precipitation did not affect breeding date, but was positively associated with female fecundity. There was no association between earlier breeding and larval survival or mass at metamorphosis, but earlier breeding was associated with delayed larval development. The delay in larval development was explained through a counterintuitive correlation between breeding date and temperature during larval development. Warmer winters led to earlier breeding, which in turn was associated with cooler post-breeding temperatures that slowed larval development. The delay in larval development did not fully compensate for the earlier breeding, such that for every 2 days earlier that breeding took place, the average date of metamorphosis was 1 day earlier. Other studies have found that earlier metamorphosis is associated with increased postmetamorphic growth and survival, suggesting that earlier breeding has beneficial effects on wood frog populations. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61723
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biology, Case Western Reserve University, Cleveland, OH, United States
Recommended Citation:
Benard M.F.. Warmer winters reduce frog fecundity and shift breeding phenology, which consequently alters larval development and metamorphic timing[J]. Global Change Biology,2015-01-01,21(3)