Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s10641-014-0367-z |
Reproductive ecology of Garra ghorensis, a critically endangered fish in Jordan | |
Hamidan, Nashat1,2; Britton, J. Robert2 | |
通讯作者 | Hamidan, Nashat |
来源期刊 | ENVIRONMENTAL BIOLOGY OF FISHES |
ISSN | 0378-1909 |
EISSN | 1573-5133 |
出版年 | 2015 |
卷号 | 98期号:5页码:1399-1409 |
英文摘要 | The life history traits of desert fishes indicate their resilience to environmental change and vulnerability to extirpation and extinction. Garra ghorensis is a small (< 140 mm) riverine cyprinid fish endemic to the Southern Dead Sea area and is critically endangered through habitat loss and invasive species. Here, the reproductive ecology of three Jordanian populations of this species were assessed through the collection of monthly samples between February 2011 and January 2012 in a region where air temperatures ranged between below 0 A degrees C and over 40 A degrees C through the year. Samples contained fish up to 137 mm fork length, with most < 100 mm. Fish matured at length below 40 mm and at ages < 1 year. Except one population of female dominated, sex ratios were not significantly different from 1:1. Reproductive effort, as gonado-somatic index (I (G) ), peaked in both sexes in May, indicating spawning commenced soon after, with gonad maturation occurring at mean air temperatures below 20 A degrees C and spawning above 20 A degrees C. Mean female I (G) by month suggested protracted spawning throughout the summer months. Both mean I (G) and fecundity varied between sites, with the highest values at the most disturbed site. In combination, these outputs suggest G. ghorensis has an opportunistic life history strategy with sufficiently plastic reproductive traits that enable adaptation to shifting conditions. These are likely to provide resilience to habitat alterations and suggest that the plasticity of their reproductive traits might be important in developing strategies to safeguard their populations in the face of continued habitat degradation. |
英文关键词 | Extinction Extirpation Life history traits Reproductive traits Biodiversity loss |
类型 | Article |
语种 | 英语 |
国家 | Jordan ; England |
收录类别 | SCI-E |
WOS记录号 | WOS:000351518900015 |
WOS关键词 | LIFE-HISTORY TRAITS ; FRESH-WATER FISHES ; EXTINCTION RISK ; POPULATIONS ; PATTERNS |
WOS类目 | Ecology ; Marine & Freshwater Biology |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/186955 |
作者单位 | 1.Royal Soc Conservat Nat, Amman 11941, Jordan; 2.Bournemouth Univ, Sch Appl Sci, Ctr Conservat Ecol & Environm Sci, Poole BH12 5BB, Dorset, England |
推荐引用方式 GB/T 7714 | Hamidan, Nashat,Britton, J. Robert. Reproductive ecology of Garra ghorensis, a critically endangered fish in Jordan[J],2015,98(5):1399-1409. |
APA | Hamidan, Nashat,&Britton, J. Robert.(2015).Reproductive ecology of Garra ghorensis, a critically endangered fish in Jordan.ENVIRONMENTAL BIOLOGY OF FISHES,98(5),1399-1409. |
MLA | Hamidan, Nashat,et al."Reproductive ecology of Garra ghorensis, a critically endangered fish in Jordan".ENVIRONMENTAL BIOLOGY OF FISHES 98.5(2015):1399-1409. |
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