Browsing by Author "Koyun, M."

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First Record of Lernaea Cyprinacea (Crustacea: Copepoda) on Capoeta Capoeta (Actinopterygii: Cyprinidae) From Karasu Creek (Van) Eastern Anatolia
(Universitatea din Oradea, 2018) Koyun, M.; Atici, A.A.
In the present study, Lernaean parasite (Lernaea cyprinacea) or called cyclopoid copepod parasite was reported on the examined fish species captured from the Karasu Creek (Van, Turkey), in July 2014. Cyclopoid parasites were isolated from the external surface of fins, operculum and body surface of Capoeta capoeta. A total of 82 parasites were found in 20 fish caught. The prevalence of parasites were calculated as 65% and the intensities as 6.31%. The cyclopoid parasite was observed and measured by microscope observations. The morphological features of the parasite specimens and the pictures are given. © Biharean Biologist, Oradea, Romania, 2018.
Investigation of the Irisin, Preptin and Adropin Levels in the Blood Serum of Alburnus Tarichi
(C M B Assoc, 2017) Caf, F.; Algul, S.; Koyun, M.
Irisin, preptin and adropin are three newly discovered peptides that play critical roles in regulating energy homeostasis in various vertebrates. The purposes of this study were to measure the serum concentrations of preptin, adropin and irisin in the Alburnus tarichi and to investigate the relationship of these peptides to the weight, gender and length of this the fish, which will provide useful information for future biotechnology purposes aimed at improvements in aquaculture production. This study used 12 adult A. tarichi (6 female and 6 male) obtained from Van Lake (Van, Turkey). The serum irisin, preptin and adropin levels were measured using a commercially available enzyme-linked immunosorbent assay (ELISA) kit to determine correlations between the levels of these three hormones and fish body weight and length. No statistically significant correlations were detected between the serum irisin, adropin and preptin levels and A. tarichi body weight (p = 0.921, r = -0.031; p = 0.08, r = 0.519; p = 0.461, r = -0.235, respectively) or length (p = 0.901, r = -0.040; p = 0.105, r = 0.490; p = 0.236, r = -0.369, respectively). Thus, serum levels of these hormones are independent of fish gender, body weight and length.