Türkiye Denizleri ve İç Sularında Avlanan Türlerin ... - Greenpeace
Türkiye Denizleri ve İç Sularında Avlanan Türlerin ... - Greenpeace
Türkiye Denizleri ve İç Sularında Avlanan Türlerin ... - Greenpeace
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Barbate BFT population with the greatest MB (all fish sampled > 100 kg). These data reflect a<br />
situation in which the eastern Mediterranean basin may function as a habitat for young BFT,<br />
until they gain a larger MB and are able to mo<strong>ve</strong> to the Atlantic Ocean. Howe<strong>ve</strong>r, the existence<br />
of genetically discrete BFT populations in the Mediterranean Sea cannot be ruled out.<br />
2008<br />
Reproducti<strong>ve</strong> biology of little tunny, Euthynnus alletteratus (Rafinesque), from the northeastern<br />
Mediterranean Sea.<br />
Kahraman, A.E., Alıçlı, T.Z., Akaylı, T., Oray, I.K. 2008.<br />
J. Appl. Ichthyol. 24(5): 551-554.<br />
Abstract:The study aimed at identifying spawning season and potential year classes reaching<br />
maturity in the north-eastern Mediterranean, an area where little information on tuna spawning<br />
is available. Gonads (60 ovaries and 36 testis) were obtained from little tunny, Euthynnus<br />
alletteratus. The fish were caught between No<strong>ve</strong>mber 2002 and May 2005 in the north-eastern<br />
Mediterranean Sea. The ovaries were histologically examined to determine the reproducti<strong>ve</strong><br />
conditions and de<strong>ve</strong>lopmental stages of oocytes. Se<strong>ve</strong>n females sampled in May, July, and<br />
August were sexually mature (stage III or IV). The gonado-somatic index (GSI) indicated that<br />
spawning generally occurred between May and September. The most intensi<strong>ve</strong> spawning<br />
period was obser<strong>ve</strong>d between July and August. The sex ratio was calculated as 1:1.7 M ⁄ F<br />
(total n = 96). The length and weight relationship was calculated with W = 0.038 L 2.77 , ages<br />
from year I to IV being included in the analysis.<br />
2009<br />
Growth and reproduction studies on gilthead seabream (Sparus aurata) in Beymelek Lagoon,<br />
Turkey<br />
Emre, Y., Balık, İ., Sümer, Ç., Oskay, D.A., Yesilçimen, H.Ö.<br />
İranian Journal of Fisheries Sciences, 8: 103-114.<br />
Abstract: Age, growth, length-weight relationship and reproduction were in<strong>ve</strong>stigated for<br />
gilthead seabream (Sparus aurata L., 1758) collected from Beymelek Lagoon (Antalya,<br />
Turkey) between February 2006 and July 2007. The ages, total lengths and weights of samples<br />
ranged from 0+ to 4 years, from 10.6 to 35.5 cm, and from 18 to 928 g. Growth was described<br />
by the standard form of the von Bertalanffy growth equation and the estimated parameters were<br />
L ∞ = 44.6 cm, k = 0.394 yr -1 and t 0 = -1.331 yr. Length-weight relationship was determined as<br />
W=0.0174 TL 2.9769 (R 2 =0.965), and weight increased with size isometrically (b = 2.9769) for<br />
all fishes. Sex in<strong>ve</strong>rsion occurred mainly 26 cm in total length and females reached sexual<br />
maturity at 28.5 cm. The spawning period occurred from December to February, while the<br />
gamete emission peaked in December.<br />
Key Words: Beymelek Lagoon, gilthead seabream, Sparus aurata, growth, length-weight<br />
relationship, reproduction.<br />
2010<br />
Age, growth, length-weight relationship and reproduction of the striped seabream<br />
(Lithognathus mormyrus L., 1758) (Sparidae) in the Beymelek Lagoon (Antalya, Turkey).<br />
Emre, Y., Balık, İ., Sümer, Ç., Oskay, D.A., Yesilçimen, H.Ö.<br />
Turk J Zool, 34: 93-100.
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