Yazar "Özuluğ, Müfit" seçeneğine göre listele
Listeleniyor 1 - 4 / 4
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Conversions of total, fork and standard length measurements based on 42 marine and freshwater fish species (from Turkish water)(2006) Gaygusuz, Özcan; Gaygusuz, Çiğdem Gürsoy; Özuluğ, Müfit; Tarkan, Ali Serhan; Acıpınar, Hasan; Bilge, Gökçen; Filiz, HalitRelationships between total (TL), fork (FL) and standard (SL) lengths belonging 19 families from Aegean and Marmara coast of Turkey were presented for 42 fish species. The relationships between TL, FL and SL were all linear and they were all highly significant (P<0.001) with all $r^2$ values being >0.90. There were significant differences in the slope of length – length relationships between some localities and type of length conversions for the fish species.Öğe Oxynoemacheilus fatsaensis, a new nemacheilid loach from the Elekci Stream in Northern Anatolia (Teleostei: Nemacheilidae)(Elsevier GmbH, 2021) Saygun, Serkan; Ağdamar, Sevan; Özuluğ, MüfitWe report a new species, Oxynoemacheilus fatsaensis, from the Elekçi Stream, a small stream that flows to the Black Sea in Northern Turkey. It is distinguished from other Oxynoemacheilus species in the Black Sea, Upper Euphrates, and Kura-Aras River basins by having a suborbital groove in males, an axillary lobe at the pelvic-fin base, no dorsal adipose crest on the caudal peduncle, a deeply emarginate caudal fin, small inner and outer rostral barbels, and mottled flank pattern. Molecular data suggest that the new species is separated by a minimum p-distance of 3.3% from O. banarescui in the mitochondrial DNA COI barcode region.Öğe The ichthyofaunal diversity of freshwater ecosystems in Gokceada Island (NW Turkey) under the pressure of nonnative species(Turkiye Klinikleri, 2021) Ağdamar, Sevan; Saç, Gülşah; Gaygusuz, Özcan; Doğaç, Ersin; Acar, Ümit; Gürsoy Gaygusuz, Çiğdem; Özuluğ, MüfitFreshwater ecosystems have a greater value for biodiversity per surface area than terrestrial and marine ecosystems. Streams and lakes are notably prone to biodiversity loss, being the greatest threats habitat destructions and nonnative species. The aim of the present study is to assess the fish composition of lotic and lentic water systems of an island ecosystem (Gökçeada Island, Turkey), which is poorly studied, and to highlight the entry routes and possible impacts of translocated fish species in an island ecosystem. The field surveys were conducted in a total of 14 sampling sites (five reservoirs and nine streams) in the inland waters of Gökçeada Island between September 2019 and January 2021. Fish samples were collected by electrofishing (SAMUS 1000; a backpack electro-shocker). A total of eight fish species belonging to six families (Anguillidae, Atherinidae, Cyprinidae, Leuciscidae, Mugilidae, and Poeciliidae) were determined. As a result fish community of the island was mostly composed by the introduced species Carassius gibelio, Gambusia holbrooki and Pseudorasbora parva. This study provides the first detailed information on the distribution of the fish species encountered in the inland waters of Gökçeada Island. Results showed that the fish fauna of the island was predominantly shaped by fish stocking activities.Öğe Two new records for the fish fauna of lake Sapanca Basın (Sakarya, Turkey)(2007) Özuluğ, Müfit; Tarkan, Ali Serhan; Gaygusuz, Özcan; Gaygusuz, Çiğdem GürsoyTwo freshwater fish species, Phoxinus phoxinus (Linnaeus, 1758) and Gambusia holbrooki Girard, 1859, were recorded for the first time from Lake Sapanca Basin. P. phoxinus were captured from Mahmudiye stream while G. holbrooki was captured from Maşukiye stream. The measural and meristic characters of the specimens were similar to those reported elsewhere for the species. P. phoxinus known as predator of trout’s eggs was caught in big numbers in same stream with Salmo trutta macrostigma. The inclusion of these species has increased the species list of fish fauna of Lake Sapanca.
