Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11356-017-0278-6 |
Artificial wetlands as tools for frog conservation: stability and variability of reproduction characteristics in Sahara frog populations in Tunisian man-made lakes | |
Bellakhal, Meher1; Neveu, Andre2; Fertouna-Bellakhal, Mouna1,3; Aleya, Lotfi3 | |
通讯作者 | Aleya, Lotfi |
来源期刊 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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ISSN | 0944-1344 |
EISSN | 1614-7499 |
出版年 | 2017 |
卷号 | 24期号:34页码:26658-26669 |
英文摘要 | Amphibian populations are in decline principally due to climate change, environmental contaminants, and the reduction in wetlands. Even though data concerning current population trends are scarce, artificial wetlands appear to play a vital role in amphibian conservation. This study concerns the reproductive biology of the Sahara frog over a 2-year period in four Tunisian man-made lakes. Each month, gonad state (parameters: K, GSI, LCI), fecundity, and fertility of females (using 1227 clutches) were evaluated in the field under controlled conditions. Clutches were present for 110-130 days at two of the sites, but only for 60-80 days at the other two. Maximum egg laying occurred in May, corresponding to the highest point in the gonad somatic index. Clutch densities were higher in the smaller lakes. Female fecundity was in relation to body size; mean clutch fecundity attained 1416 eggs, with no differences observed according to site. Egg fertility varied over a 1-year period, with a maximum in May followed by a decrease when water temperature was at its highest. Eggs were smaller at the beginning of spawning; maximum size was in May, which might explain the higher fertility, but no maternal influence was detected. Embryonic development was strictly dependent on temperature. The population at each site appeared as a small patch within a metapopulation in overall good health, as shown by the relative temporal stability in reproduction variables. Constructed wetlands may therefore play an important role in the conservation of amphibians, especially in semi-arid zones. |
英文关键词 | Artificial wetlands Species conservation Sahara frog Breeder characteristics Spawning activities |
类型 | Article |
语种 | 英语 |
国家 | Tunisia ; France |
收录类别 | SCI-E |
WOS记录号 | WOS:000417372600043 |
WOS关键词 | MEDITERRANEAN TEMPORARY PONDS ; AGRICULTURAL INTENSIFICATION ; PELOPHYLAX-SAHARICUS ; AMPHIBIAN DECLINE ; SALAMANDER EGGS ; GREEN FROG ; DYNAMICS ; BIOLOGY ; SIZE ; METAPOPULATION |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/198801 |
作者单位 | 1.Inst Super Peche & Aquaculture Bizerte, Unite Rech Exploitat Milieux Aquat 9, Errimel, BP 15, Bizerte 7080, Tunisia; 2.Agrocampus Rennes, INRA, UMR 985, F-35042 Rennes, France; 3.Univ Franche Comte, Lab Chronoenvironm, UMR 6249, CNRS, Besancon, France |
推荐引用方式 GB/T 7714 | Bellakhal, Meher,Neveu, Andre,Fertouna-Bellakhal, Mouna,et al. Artificial wetlands as tools for frog conservation: stability and variability of reproduction characteristics in Sahara frog populations in Tunisian man-made lakes[J],2017,24(34):26658-26669. |
APA | Bellakhal, Meher,Neveu, Andre,Fertouna-Bellakhal, Mouna,&Aleya, Lotfi.(2017).Artificial wetlands as tools for frog conservation: stability and variability of reproduction characteristics in Sahara frog populations in Tunisian man-made lakes.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,24(34),26658-26669. |
MLA | Bellakhal, Meher,et al."Artificial wetlands as tools for frog conservation: stability and variability of reproduction characteristics in Sahara frog populations in Tunisian man-made lakes".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 24.34(2017):26658-26669. |
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