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    Age, growth and reproduction of the goldband goatfish, Upeneus moluccensis (Bleeker, 1855), in İskenderun Bay, the eastern Mediterranean
    (2005) Işmen, Ali
    The age composition, growth parameters, spawning season, sex ratio, length at first sexual maturity and fecundity of the goldband goatfish (Upeneus moluccensis) caught in İskenderun Bay in the eastern Mediterranean Sea were investigated. Females and males made up 51.6% and 48.4%, respectively, of the particular population of the species. The total length of females ranged from 7.0 cm to 20.5 cm, and of males from 7.0 cm to 17.8 cm. The length (L) - weight (W) relationships for males and females were estimated as W = 0.0118*L2.99 and W = 0.0097*L3.00, respectively. The age data derived from otolith readings were used to estimate the growth parameters of the von Bertalanffy equation. The estimated parameters were L ?=25.19 cm, K = 0.197 and t0 = -1.002. The maximum age was 7 for females and 6 for males. The 2-year age group was dominant in the pooled data. Males and females matured at a total length of 11 cm. The monthly values of the gonadosomatic index indicated that spawning occurred mainly between June and September. The fecundity (F) - length relationship was logF = -1.732 + 5.39logL (r = 0.82). © TÜBİTAK.
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    Öğe
    Age, growth and reproduction of tub gurnard (Chelidonichthys lucerna L. 1758) in the Bay of iskenderun in the Eastern Mediterranean
    (2004) Işmen, Ali; Işmen, Pinar; Başusta, Nuri
    The age composition, growth parameters, spawning season, sex ratio, length at first sexual maturity and fecundity of tub gurnard (Chelidonichthys lucerna) caught from the Bay of İskenderun in the eastern Mediterranean Sea were investigated. Females and males made up 58.2% and 41.8%, respectively, of the particular population of the species. The total length of females ranged from 8.0 cm to 30.3 cm, and of males from 8.3 cm to 21.2 cm. The length (L) - weight (W) relationships for males and females were estimated as W = 0.0089*L3.01 and W = 0.0095*L2.99, respectively. The age data derived from otolith readings were used to estimate the growth parameters of the von Bertalanffy equation. The estimated parameters were: L? = 45.0 cm, K = 0.221 and tO = -0.581. The maximum age was 4 for females and 3 for males. The 1-year age group was dominant in both females and males. Males matured at a total length of 18 cm, while females matured at 20 cm. The monthly values of the gonadosomatic index indicated that spawning occurred mainly between December and May. The fecundity (F) - length relationship was logF = -2.512 + 5.58logL (r = 0.94).
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    Öğe
    Growth and reproduction of por's goatfish (Upeneus pori Ben-Tuvia & Golani, 1989) in Iskenderun Bay, the Eastern Mediterranean
    (2006) Işmen, Ali
    The age composition, growth parameters, spawning season, sex ratio, length at first sexual maturity and fecundity of por's goatfish (Upeneus pori) caught from the Bay of İskenderun in the eastern Mediterranean Sea were investigated. Females and males made up 52.6% and 47.4%, respectively, of the particular population of the species. The total length of females ranged from 7.0 cm to 17.0 cm, and of males from 6.6 cm to 15.1 cm. The length (L) - weight (W) relationships for males and females were estimated as W = 0.0108*L2.99 and W = 0.0097*L3.03, respectively. The age data derived from otolith readings were used to estimate the growth parameters of the von Bertalanffy equation. The estimated parameters were: L? = 19.1 cm, K = 0.360 and to = -0.812. The maximum age was 5 for females and 4 for males. The 2-year age group was dominant in both females and males. Males and females matured at a total length of 10 cm. The monthly values of the gonadosomatic index indicated that spawning occurred mainly between May and July. The fecundity (F) - length relationship was logF = 0.733 + 3.46logL (r = 0.81). © TÜBİTAK.