Article detail · 2012
Circumstantial evidence of gibel carp, Carassius gibelio, reproductive competition exerted on native fish species in a mesotrophic reservoir
- Year
- 2012
- Type
- article
Data source split
- YÖKSİS YÖKSİS article record
- YÖKSİS venue FISHERIES MANAGEMENT AND ECOLOGY
- Catalog match (ISSN) Fisheries Management and Ecology
- OpenAlex OpenAlex enrichment (abstract, citations, topics)
Abstract
OpenAlex · English
Abstract Gibel carp, Carassius gibelio (Bloch), impacts on native fish species have been reported but little studied despite a long history of introductions in Europe. This species is able to reproduce gynogenetically, which involves the use of sperm from males of other species to activate egg development, so reproductive competition is a likely but virtually unstudied impact of gibel carp on native fishes. This study evaluates the impact of introduced C. gibelio on the population biology of native fishes over a 6‐year period in a mesotrophic drinking water reservoir in north‐western Turkey. A dramatic decrease in the relative density (i.e. catch per unit effort) of native species correlated significantly with an increase in C. gibelio relative density. Growth characteristics (back‐calculated ages, growth index and relative condition) and length at maturity did not differ significantly among years in C. gibelio and native fishes. Relative density, duration of spawning, reproductive effort and gonado‐somatic index of C. gibelio increased with some water quality variables [total phosphorus (TP); chlorophyll‐a (Chl‐a)] and coincided with decreasing trends for natives. However, TP and Chl‐a were not correlated with growth features in C. gibelio or natives fishes. The results suggest that the decline in the reservoir’s native cyprinid populations is likely due to a combination of degrading environmental conditions and a disparity in reproductive effort, with introduced C. gibelio invasion facilitated by gynogenetic reproduction and an observed interference with native fishes during spawning.
Topics
Citations
OpenAlex cited_by_count. Not a WoS or Scopus citation count; those sources have no separate column here.
68 citations
OpenAlex cited_by_count (cache / database)
74 publications in the local catalog that cite this work (OpenAlex reference match; not the full global list).
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- Are Introduced Gibel Carp Carassius gibelio in Turkey More Invasive in Artificial than in Natural Waters 2012
- Are introduced gibel carp Carassius gibelio in Turkey more invasive in artificial than in natural waters? 2012
- Are introduced gibel carp Carassius gibelio in Turkey more invasive in artificial than in natural waters 2012
- Are introduced gibel carp Carassius gibelio in Turkey more invasive in artificial than in natural waters 2012
- Are introduced gibel carp Carassius gibelio in Turkey more invasive in artificial than in natural waters 2012