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1

New record of elongate lanternfish, Notoscopelus elongatus, [Costa, 1844] , from the coastal waters of Aegean Sea, Turkey, with notes on species' morphology and distribution

100%
Tuncer S., Orlov A., Ozen O., Bilgin S.
Acta Ichthyologica et Piscatoria
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2009
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tom 39
|
nr 2
139-145
Background. Marine ichthyofauna of the Mediterranean Sea is represented by 712 species, 117 of which are deepwater fishes. During the last decade, this ichthyofauna has been considerably enriched, either by Suez Canal or Strait of Gibraltar migrations or simply by mariculture escapees. This study is intended to discussed morphology of one of such non-indigenous fish species and its distribution. Materials and Methods. Three specimens of elongate lanternfish, Notoscopelus elongatus (Costa, 1844), were captured during a commercial lift net operation in Ece Limani, Aegean Sea, Turkey. The fish were described and illustrated, following commonly accepted procedures. Results. This is the first documented new record of the species from Aegean Sea, Turkey. The described meristic and morphometric features of elongate lanternfish, Notoscopelus elongatus, are consistent with the data provided by descriptors of its previous findings (with minor exceptions). The most interesting morphological feature of the presently described material is the presence in the smaller specimen (TL 103 mm) of 4 precaudal photophores (Prc) on the left body side (in contrast to 3 usual ones). Conclusion. This work will undoubtedly enhance our knowledge on newly introduced species on lanterfishes in the Mediterranean and in Aegean Sea in particular.
2

Feeding habits of the marbled goby, Pomatoschistus marmoratus (Actinopterygii: Perciformes: Gobiidae), in the Çanakkale Strait, northern Aegean Sea, Turkey

100%
Altin A., Ozen O., Ayyildiz H., Daban I. B.
Acta Ichthyologica et Piscatoria
|
2015
|
tom 45
|
nr 1
Pomatoschistus marmoratus (Risso, 1810) is a small demersal fish and one of the dominant species inhabiting shallow waters of the Mediterranean. Information, however, on their feeding habits are still scarce. In this study, the stomach contents of P. marmoratus were investigated in order to determine feeding habits according to seasons and sizes. The fish were collected monthly from 3 stations between October 2008 and August 2009, using a beach seine, from the shallow waters of the Çanakkale Strait, Turkey. A total of 383 P. marmoratus, ranging from 13 to 69 mm TL, were analysed. The most important prey items in the stomach contents were copepods and amphipods. The numerical abundance of each food item in the stomach contents varied significantly with season. The diet of juvenile P. marmoratus consisted mainly of copepods. The occurrence of largest prey items such as amphipods and bivalves appeared relatively higher in adults. However, no significant differences were found between the feeding habits of juveniles and adults.
3

Age and growth of Capoeta erhani (Actinopterygii:Cypriniformes: Cyprinidae) from the Menzelet Reservoir, Turkey

100%
Ayyildiz H., Emre Y., Ozen O., Yagci A.
Acta Ichthyologica et Piscatoria
|
2014
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tom 44
|
nr 2
Background. Capoeta erhani Turan, Kottelat et Ekmekçi, 2008 has an economic importance in commercial and recreational fisheries in Turkey. Knowledge of the biology of this species is very scarce. Despite the importance of this species, no research on the population dynamics such as age and growth rates has been conducted. The aim of this study was to determine the age, growth rate, and the relations between the fish size and the otolith size for C. erhani from the Menzelet Reservoir, Turkey. Materials and Methods. This study was carried out seasonally in the Menzelet Reservoir, between January and December 2012. Samples were collected using gill nets with mesh sizes ranging from 18 to 30 mm. Results. A total of 134 otoliths obtained from Capoeta erhani that ranged from 15 to 33.8 cm TL were used in the analyses. The overall male : female ratio (M : F = 1.25 : 1.00) was biased in favour of males. The Mann–Whitney test revealed significant differences between sexes, regarding TL (P < 0.05). The calculated length–weight relations were TL = 0.0097W3.0015 (r2 = 0.986) for females, TL = 0.0054W3.2011 (r2 = 0.975) for males, and TL = 0.0075W3.0892 (r2 = 0.979) for all specimens combined. The von Bertalanffy growth models were L∞ = 33.83 cm (TL), K = 0.964, t0 = –0.573 for females; L∞ = 32.02 cm (TL), K = 0.843, t0 = –0.562 for males; L∞ = 33.85 cm (TL), K = 0.821, t0 = –0.482 for all specimens. Conclusion. This study provides the first information on age, growth, and otolith morphometric parameters of Capoeta erhani. Determining the parameters of C. erhani age and growth rates will lead to the estimates of relevant parameters of population dynamics and to better understanding of the long-term changes of the stock sizes.
4

Age and growth of Capoeta pestai (Actinopterygii: Cyriniformes: Cyprinidae) in a small river entering the Lake Eğirdir, Turkey

76%
Emre Y., Altin A., Ayyildiz H., Dolcu B., Kucuk F., Ozen O.
Acta Ichthyologica et Piscatoria
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2016
|
tom 46
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nr 2
5
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The effect of some growing substrate media on yield and fruit quality of eggplant (Solanum melongena L.) grown and irrigated by drip irrigation system in green house

76%
Aktas H., Daler S., Ozen O., Gencer K., Bayindur D., Erdal I.
Infrastruktura i Ekologia Terenów Wiejskich
|
2013
|
nr 1/III
The soilless culture of vegetables in greenhouse has increased in Turkey. In recent years, bunch tomato has grown in soilless culture. However, bacterial cancer, virus (TMV, TYLVC) andTutaabsulta are limited tomato growing soilless culture as well. For this reason, others vegetables such as eggplant and pepper can be alternative crop for soilless culture. The aim of the research is determination of growing media such as cocopeat, split mushroom compost, perlite, volcanic tuff and sawdust on yield and fruit quality of eggplant. Our results suggest that mushroom compost and cocopeat media improve eggplant fruit quality more than other growing media.
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