caa a22 4500 606228071 CHVBK 20210128101201.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10641-014-0367-z doi (NATIONALLICENCE)springer-10.1007/s10641-014-0367-z Reproductive ecology of Garra ghorensis , a critically endangered fish in Jordan [Elektronische Daten] [Nashat Hamidan, J. Britton] The life history traits of desert fishes indicate their resilience to environmental change and vulnerability to extirpation and extinction. Garra ghorensis is a small (<140mm) 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°C and over 40°C through the year. Samples contained fish up to 137mm fork length, with most <100mm. Fish matured at length below 40mm and at ages <1year. 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°C and spawning above 20°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. Springer Science+Business Media Dordrecht, 2014 Extinction nationallicence Extirpation nationallicence Life history traits nationallicence Reproductive traits nationallicence Biodiversity loss nationallicence Hamidan Nashat Royal Society for the Conservation of Nature, P.O. Box 1215, 11941, Amman, Jordan aut Britton J. Centre for Conservation Ecology and Environmental Science, School of Applied Sciences, Bournemouth University, BH12 5BB, Poole, UK aut Environmental Biology of Fishes Springer Netherlands 98/5(2015-05-01), 1399-1409 0378-1909 98:5<1399 2015 98 10641 https://doi.org/10.1007/s10641-014-0367-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0367-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hamidan Nashat Royal Society for the Conservation of Nature, P.O. Box 1215, 11941, Amman, Jordan aut NATIONALLICENCE 700 1- Britton J. Centre for Conservation Ecology and Environmental Science, School of Applied Sciences, Bournemouth University, BH12 5BB, Poole, UK aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/5(2015-05-01), 1399-1409 0378-1909 98:5<1399 2015 98 10641