Although the detrimental ecological and economic effects of introducing freshwater fish species have been extensively documented,non-native freshwater fishes continue to be introduced in large numbers globally to enha...Although the detrimental ecological and economic effects of introducing freshwater fish species have been extensively documented,non-native freshwater fishes continue to be introduced in large numbers globally to enhance fisheries and aquaculture.In Turkey,stocking of common carp Cyprinus carpio is practised to provide food security for people and job security for artisanal fishers,resulting in a country-wide distribution.These stockings,however,increase the risk of accidental introductions and have led to introductions and subsequent invasions of gibel carp Carassius gibelio,a globally invasive and highly detrimental fish species.Here,we assessed the growth types,body conditions and trophic interactions via bulk carbon and nitrogen stable isotope analysis of common and gibel carp in both natural and artificial water bodies in Turkey.The results indicated that common and gibel carp express similar growth types and body conditions in all waters and have similar trophic ecologies.This leads to substantial trophic niche overlaps in waters where they co-occur,with the potential for strong interspecific competition.Considering the ongoing stocking of common carp for fishery enhancement,we recommend to specifically target these stockings in waters where gibel carp has already become invasive.Our findings,indeed,suggest that common carp releases have the potential to hamper invasive gibel carp populations by increasing the competitive interactions between the two species.展开更多
基金supported by Eskis¸ehir Osmangazi University Scientific Research Projects Coordination Unit under grant number FBA-2021-2227 and FCD-2021-2146the TUBITAK BIDEB(2219 Program),which supported the authors both Irmak KURTUL and Ali Serhan TARKAN with one-year scholarships during their post doc studies at Bournemouth University,the United Kingdom.
文摘Although the detrimental ecological and economic effects of introducing freshwater fish species have been extensively documented,non-native freshwater fishes continue to be introduced in large numbers globally to enhance fisheries and aquaculture.In Turkey,stocking of common carp Cyprinus carpio is practised to provide food security for people and job security for artisanal fishers,resulting in a country-wide distribution.These stockings,however,increase the risk of accidental introductions and have led to introductions and subsequent invasions of gibel carp Carassius gibelio,a globally invasive and highly detrimental fish species.Here,we assessed the growth types,body conditions and trophic interactions via bulk carbon and nitrogen stable isotope analysis of common and gibel carp in both natural and artificial water bodies in Turkey.The results indicated that common and gibel carp express similar growth types and body conditions in all waters and have similar trophic ecologies.This leads to substantial trophic niche overlaps in waters where they co-occur,with the potential for strong interspecific competition.Considering the ongoing stocking of common carp for fishery enhancement,we recommend to specifically target these stockings in waters where gibel carp has already become invasive.Our findings,indeed,suggest that common carp releases have the potential to hamper invasive gibel carp populations by increasing the competitive interactions between the two species.
