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    Beneficial effects of Oral Allspice, Pimenta dioica powder supplementation on the hemato-immunological and serum biochemical responses of Oreochromis mossambicus
    (Wiley, 2016) Gullu, Kenan; Acar, Umit; Kesbic, Osman Sabri; Yılmaz, Sevdan; Agdamar, Sevan; Ergün, Sebahattin; Turker, Ali
    The present study investigated the effects of dietary allspice powder supplementation on welfare status of Tilapia, Oreochromis mossambicus assessed by hemato-immunological and serum biochemical parameters. Five diets were formulated to contain 0 (control), 5, 10, 15 or 20g of allspicekg(-1) of fish feed. Fish were fed experimental diets for 60days. Supplementation of allspice powder at 10gkg(-1) positively influenced the serum glucose, plasma lysozyme activity and myeloperoxidase activity. Dietary allspice powder at 15gkg(-1) also positively influenced the serum biochemical parameters (total protein, albumin and globulin) and plasma lysozyme activity. However, 20gkg(-1) allspice powder group had significantly lower values of respiratory burst activity and red blood cell count than other experimental groups (P<0.05). In conclusion, the results of the present study demonstrated that supplementation of allspice powder at 10 or 15gkg(-1) for 60days, had beneficial effects on improvement of some immunological and serum biochemical status of O. mossambicus. These findings suggest that dietary supplementation of allspice powder might further improve the resistance to fish pathogens.
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    Genetic differentiation of non-native populations of Gibel Carp,Carassius gibelioin Western Turkey by ISSR and SRAP markers
    (Taylor & Francis Ltd, 2020) Agdamar, Sevan; Baysal, Omur; Yildiz, Aysegul; Tarkan, Ali Serhan
    Freshwater fish are one of the most frequently translocated and introduced aquatic animal groups and exhibit higher establishment ratios than many other taxa. Introductions are usually irreversible. One of common non-native fish species in Turkey is the Gibel Carp,Carassius gibeliowhich was introduced in the 1980s and is now widespread. We tested dominant markers (ISSR and SRAP) for genetic characterisation of Gibel Carp samples collected from eight locations in western Turkey. ISSR and SRAP marker sets showed that the level of gene flow between these populations (N-m= 0.45 /N-m= 0.47) is low and that the level of genetic differentiation (G(ST)= 0.53 /G(ST)= 0.52) is high. Inter-population variation detected by ISSR and SRAP markers constituted half part of the population (46.88 / 50.00%), while the rest was at intra-population level. These results indicate that the present population of the Gibel Carp is the result of several colonization events originating from the different sources. The phylogenetic relationship among the populations suggest that there were two independent major introduction events, one in the Marmara Region and the other in southern Turkey.
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    Öğe
    High genetic diversity in an invasive freshwater fish species, Carassius gibelio, suggests establishment success at the frontier between native and invasive ranges
    (Elsevier Gmbh, 2019) Agdamar, Sevan; Tarkan, Ali Serhan
    Non-native freshwater fish introductions can have direct and indirect negative effects on native flora and fauna, ecosystems, and national economies. Although invasions are paradoxical from an evolutionary standpoint, population genetics could be useful to understand invasion scenarios of non-native species. One of the most common introduced fish in Europe and Turkey is the gibel carp Carassius gibelio, which was first introduced from East Asia in the 17th century. To find out the origin and distribution pattern and characterise the genetic variation of gibel carp in Turkey, the aim of this study was to identify haplotype the species' diversity and distribution in the country. Three mitochondrial (COI, Cyt-b and D-loop) and one nuclear (ITS1) DNA markers were used in 20 populations sampled from 18 different geographic locations, resulting in eight newly-identified haplotypes. The present results: (i) suggest high genetic diversity across regions at both the mitochondrial (29 haplotypes, h = 0.9058, pi = 0.0152) and nuclear (3 haplotypes, h = 0.6365, pi = 0.0094) level; (ii) confirm previous findings that this species may have entered Turkey directly either from its native or through its invasive range; (iii) suggest that, given the distribution of the identified haplotypes by geographic location, the majority of individuals not only originated from the northern (European) part of Turkey but also from the southern (Mediterranean) part of the country. Understanding the genetic characterisation of gibel carp can contribute to more efficient management actions for this species, including prevention of (multiple) introductions and eradication/control of those populations with relatively low genetic diversity. (C) 2019 Elsevier GmbH. All rights reserved.