TY  - JOUR
T1  - Main Growth Parameters of a Threatened Species Chondrostoma holmwoodii (Boulenger, 1896) from Tahtalı Reservoir, İzmir, Turkey
TT  - Nesli Tehlike Altında Olan Chondrostoma holmwoodii (Boulenger, 1896)’nin Tahtalı Baraj Gölü’ndeki Büyüme Parametreleri
AU  - Korkmaz, Mustafa
AU  - Mangıt, Fatih
AU  - Yerli, Sedat
PY  - 2017
DA  - December
DO  - 10.17216/limnofish.329521
JF  - Journal of Limnology and Freshwater Fisheries Research
PB  - Eğirdir Su Ürünleri Araştırma Enstitü Müdürlüğü
WT  - DergiPark
SN  - 2149-4428
SP  - 137
EP  - 142
VL  - 3
IS  - 3
LA  - en
AB  - Adiverse genus of the Cyprinidae family, genus Chondrostoma Agassiz, 1832has a wide distribution. More than half of the species distributes in Turkey,however there is little biological information about them. The aim of thisstudy is to investigate the population parameters of Eastern Aegean Nase Chondrostomaholmwoodii and to evaluate the risks for the species in Tahtalı Reservoir.Fish sampling was carried out at 8 different sampling points at TahtalıReservoir in 2014 with multimesh gillnets. Population parameters such as ageand sex composition, length frequence analysis and von Bertalanffy growthfunction were investigated. A total of 215 specimens of C. holmwoodiiwas sampled. Total length of the specimens varies between 4.3 - 28.2 cm andtotal weight 1.05 - 271 g. Age composition of the sampled specimens variesbetween 0 to V and most of the specimens were age-III. The von Bertalanffygrowth parameters for C. holmwoodii was estimated as; = 395.30 mm(SD=63.80), K=0.17 (SD=0.05) and =46.45 mm(SD=9.41). In conclusion, main problem for C. holmwoodii population inTahtalı Reservoir is predation risk by Perca fluviatilis Linnaeus, 1758.In order to offer conservation strategies for C. holmwoodii TahtalıReservoir population, diet, population structure, and life history traits of P.fluviatilis need to be studied in detail.
KW  - Chondrostoma holmwoodii
KW  - Eastern Aegean Nase
KW  - endemic fish
KW  - von Bertalanffy
N2  - Cyprinidae familyasına ait Chondrostoma Agassiz, 1832 cinsi genişdağılım alanına sahiptir. Chondrostomatürlerinin çoğu Türkiye’de dağılım göstermesine rağmen biyolojileri hakkındayeterince bilgi bulunmamaktadır. Bu bağlamda Chondrostoma holmwoodii’nin Tahtalı Baraj Gölü’ndeki popülasyonparametrelerini incelemek ve mevcut popülasyonun risklerini değerlendirmek buaraştırmanın amacını oluşturmaktadır. Balıkörnekleri 2014 yılında Tahtalı Baraj Gölü’nde belirlenen sekiz farklı örneklemenoktasından çokgözlü ağlar ile örneklenmiştir. Yaş ve cinsiyet kompozisyonu,boy frekans analizi ve von Bertalanffy büyüme fonksiyonu gibi popülasyonparametreleri araştırılmıştır. C.holmwoodii'nin total boyu 4,3 – 28,2 cm ve toplam ağırlığı 1,05 - 271 garasında değişen 215 bireyi örneklenmiştir. Örneklenen bireylerin yaşkompozisyonu 0 ile V arasında değişirken popülasyondaki baskın yaş III olaraktespit edilmiştir. Ayrıca von Bertalanffy büyüme parametreleri; L∞ =395,30 mm (SS = 63,80), K = 0,17 (SS = 0,05) ve L0 = 46,45 mm (SS =9,41) olarak tespit edilmiştir. Sonuç olarak, Tahtalı Barajı Gölü’ndeki C. holmwoodii popülasyonu için temeltehditin Perca fluviatilis Linnaeus,1758'in tür üzerindeki predasyon baskısı olduğu görülmüştür. C. holmwoodii’nin Tahtalı Baraj Gölüpopülasyonu için koruma stratejileri belirlenirken P. fluviatilis'in diyet, popülasyon yapısı ve yaşam öyküleri deincelenmelidir.
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UR  - https://doi.org/10.17216/limnofish.329521
L1  - https://dergipark.org.tr/tr/download/article-file/395044
ER  -