[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit ::
:: Volume 19, Issue 1 (2020) ::
IJFS 2020, 19 Back to browse issues page
Life history pattern and feeding habits of Gobio bulgaricus (Drensky, 1926) (Pisces: Gobionidae) in an endorheic stream (Istranca Stream, Turkey)
G. Saç *, M. Özuluğ
Istanbul University, Department of Biology , gulsahsac@gmail.com
Abstract:   (105 Views)
The Aegean gudgeon Gobio bulgaricus (Drensky, 1926) is a freshwater fish species restricted to the western parts (Thrace) of Turkey. The aim of the present study is investigating key parameters such as age, growth, reproduction and feeding habits of G. bulgaricus in the Istranca Stream to determine biological characteristics of the species. During monthly samplings from March 2012 to June 2013, G. bulgaricus specimens were collected from the endorheic Istranca Stream, which is draining to the Lake Durusu in İstanbul. The results showed that the lifespan of the species was 5 years. The length–weight relationships of G. bulgaricus indicated positive allometric growth and the relationship was lnW=-3.976+3.080lnSL for females, lnW=-4.008+3.088lnSL for males and lnW=-4.049+3.118lnSL for all individuals. The mean size at first sexual maturity (Lm) was 4.03 cm SL for females and 3.94 cm SL for males. Absolute fecundity ranged from 355 to 5556 eggs with mean of 1179±152 eggs. Prey analyses of digestive tract content indicated that G. bulgaricus was largely omnivorous (more precisely insectivorous) feeding mainly on aquatic insects and a small amount of plant and animal materials. Diptera larvae (IRI%=96.49) were the dominant prey of G. bulgaricus in terms of index of relative importance. It is considered that the present results will increase our knowledge of the life-history traits and feeding of G. bulgaricus.
Keywords: Age, Diet, Growth, Reproduction, Istranca Stream, Turkey
Full-Text [PDF 683 kb]   (30 Downloads)    
Type of Study: Orginal research papers | Subject: Ecology
Received: 2017/06/18 | Accepted: 2017/07/22 | Published: 2020/01/19
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML     Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Saç G, Özuluğ M. Life history pattern and feeding habits of Gobio bulgaricus (Drensky, 1926) (Pisces: Gobionidae) in an endorheic stream (Istranca Stream, Turkey). IJFS. 2020; 19 (1) :248-261
URL: http://jifro.ir/article-1-2788-en.html


Volume 19, Issue 1 (2020) Back to browse issues page
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
Persian site map - English site map - Created in 0.06 seconds with 32 queries by YEKTAWEB 4030