Growth and reproduction of the Mediterranean mud shrimp Upogebia pusilla (Petagna, 1792) in the central Aegean Sea, Turkey
Makaleler > Tam Makale · 2020
Yazarlar: Akın Türker İLKYAZ, Celalettin AYDIN, TOMRİS DENİZ
CAHIERS DE BIOLOGIE MARINE, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2020, cilt 61, ss 137-148
Özet
<p>The aim of this study was to determine the growth and reproduction characteristics of Upogebia</p><p>pusilla in the central Aegean Sea. This species is widely used by the commercial and amateur bait fisheries in</p><p>Turkey. A total of 1949 U. pusilla individuals were taken from İzmir Bay between April 2014 and March 2015.</p><p>Their total length ranged between 16.96 and 80.32 mm (6.51 and 26.56 mm CL) with a mean value ± SE of</p><p>52.41 ± 0.25 mm (17.54 ± 0.08 mm CL). The female:male ratio was 1:0.99 (P > 0.05) and males can grow larger</p><p>than females. For all individuals, the equations CL = 0.317 × TL + 0.951 (R2 = 0.962) and W = 0.015 × TL3.11</p><p>(R2 = 0.978) described the total length-carapace length and total length-total weight relatioships, respectively.</p><p>The Von Bertalanffy growth equation for females was CLt = 26.08 × (1 - e-0.487 × (t + 0.0048)) (?¢ = 2.52), while for</p><p>males it was CLt = 29.12 × (1 - e-0.424 × (t + 0.0053)) (?¢ = 2.56). The relationship between the fecundity and the</p><p>total length was found to be F = 6.654 × 10-7 × TL3.90 (R2 = 0.919). Spawning occurred at three different</p><p>seasons: between February and April, in June, and in August. The relationship between the total length and</p><p>sexual maturity was found to be PL = ? × (-11.449 + 0.288 × TL) (R2 = 0.926) for females, while it was PL = ?</p><p>× (-10.399 + 0.191 × TL) (R2 = 0.878) for males. First maturity lengths were estimated as 50.11 mm for females</p><p>and 54.54 mm for males, and the first reproduction age for both sexes was found to be II+.</p>