Yazar "Oztekin, A." seçeneğine göre listele

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    Age and growth of the four-spotted megrim (Lepidorhombus boscii Risso, 1810) from Saros Bay (Northern Aegean Sea, Turkey)
    (Natl Centre Marine Research, 2013) Cengiz, O.; Ozekinci, U.; Ismen, A.; Oztekin, A.
    In this study, the growth parameters of the four-spotted megrim, (Lepidorhombus boscii Risso, 1810), were studied in Saros Bay, which had been closed to bottom trawl fishing since 2000. The sex ratio of females to males was 1:0.42. Length-weight relationships were W=0.0032L(3.31) and W=0.0069L(3.04) for females and males, respectively. Growth parameters of the populations were L-infinity=49.8 cm, k=0.09 year(-1)=-2.15 year for females; L-infinity=39.1 cm, k=0.11 year(-1), t(0)=-2.59 year for males. The growth performance index (Phi') was found to be 2.35 and 2.23 for females and males, respectively.
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    Determining the hook selectivity of bottom longline used for European hake (Merluccius merluccius, L. 1758) in Saros Bay (northern Aegean Sea, Turkey)
    (Iranian Fisheries Science Research Inst-Ifsri, 2020) Oztekin, A.; Ozekinci, U.; Ayaz, A.
    This study was carried out at Saros Bay, between June 2011 and July 2013 to determine hook selectivity of bottom longlines used in European hake (Merluccius merluccius, L. 1758) fishing. Throughout the study; thick type, 6, 7, 8 and 9 sized flat hooks were used between 150 and 400 m depth. 36 fishing operations were carried out and 222 fish were caught using 7200 hooks in total. Depending on the size of hooks; number 8 was the most efficient hook that has caught 114 fish and number 6 was the least efficient one that has caught only 14 fish. The SELECT method is used in the determination of the selectivity parameters. Bi model has given the best fit according to selectivity analysis of five different models. Optimum catching lengths found were 60.09 cm for 6 number hook; 51.45 cm for 7 number hook; 46.43 cm for 8 number hook; 40.11 cm for 9 number hook, in Bi Model model. Minimum size limit for European hake is 25 cm in Turkey. Considering the minimum size limit, use of hooks with gapes larger than number 9 hook (11.75 mm) used in this study is suggested.
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    Öğe
    Length-weight relationships of 17 less-studied fish species from Canakkale, Marmara region of Turkey
    (Wiley-Blackwell Publishing, Inc, 2009) Ozen, O.; Ayyildiz, H.; Oztekin, A.; Altin, A.
    This study reports length-weight relationships for 17 cryptic and rare species, Aidablennius sphynx, Arnoglossus kessleri, Callionymus pusillus, Callionymus risso, Clinitrachus argentatus, Echiichthys vipera, Gobius geniporus, Gobius paganellus, Labrus viridis, Lepadogaster lepadogaster, Ophidion barbatum, Pomatoschistus minutus, Pomatoschistus pictus, Salaria pavo, Tripterygion delaisi, Tripterygion tripteronotus and Zebrus zebrus from Canakkale near shores in the Marmara region of Turkey.