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Changes in the fish community of the Ömerli Reservoir (Turkey) following the introduction of non-native gibel carp Carassius gibelio (Bloch, 1782) and other human impacts.
Changes in the relative density of introduced gibel carp Carassius gibelio and native fish species were monitored over four years in the Omerli Reservoir, a temperate drinking-water reservoir in northwestern Turkey. Expand
Use of bone and otolith measures for size-estimation of fish in predator-prey studies
The results suggest that the biometric relationships between fish length and some bones (pharyngeal, opercula, cleithra) are well suited for use in prey-predator studies of all the studied species, but otoliths and the dorsal and anal spines can be used for some fish species only. Expand
Length-weight relationships of freshwater fishes from the western part of Anatolia, Turkey
This study is the first reference on length–parameters for nine freshwater fish species belonging to two families, eight of which are endemic, and with new maximum length records for three of the species. Expand
Circumstantial evidence of gibel carp, Carassius gibelio, reproductive competition exerted on native fish species in a mesotrophic reservoir.
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. Expand
The Diel Changes in Feeding Activity, Microhabitat Preferences and Abundance of Two Freshwater Fish Species in Small Temperate Streams (Omerli, Istanbul)
Assessment of the abundance, food and microhabitat use of Proterorhinus marmoratus and Cobitis vardarensis during both day and night in two small temperate streams of the Black Sea region revealed significantly higher relative densities at night than during the day. Expand
Are introduced gibel carp Carassius gibelio in Turkey more invasive in artificial than in natural waters
With the exception of smaller size at maturity, all traits were higher in populations from artificial water bodies than those inhabiting running waters, suggesting gibel carp is required to exert more reproductive effort to invade natural ecosystems than artificial waters. Expand
Preference of Zebra Mussel, Dreissena polymorpha in the Diet and Effect on Growth of Gobiids: A Comparative Study Between Two Different Ecosystems
Gobiid fishes are an important consumer of zebra mussel and their predation would affect the mussel populations, especially in the ecosystems where zebraMussel is abundant. Expand
Reoccurrence of Salmo trutta macrostigma (Dumeril, 1858) in Lake Sapanca Basin (Sakarya, Turkey): Implications for Conservation
New Distribution Areas of Four Invasive Freshwater Fish Species from Turkish Thrace
The field surveys were conducted in a total of 135 stations in Marmara and Meriç-Ergene basins to determine the new distribution areas of invasive C. gibelio, L. gibbosus, P. parva and G. holbrooki in Turkish Thrace. Expand
A NEW LOCALITY FOR THE ENDEMIC Gobio sakaryaensis TURAN, EKMEKÇİ, LUSKOVA & MENDEL, 2012 IN THE MARMARA REGION (TURKEY) AND THE LENGTH-WEIGHT RELATIONSHIP OF THE SPECIES
One of the endemic freshwater fish species of Turkey, Gobio sakaryaensis Turan, Ekmekci, Luskova & Mendel, 2012 is reported for the first time from the Lake Sapanca Basin. A total of 18 G.… Expand