scholarly journals Parasitic isopods on some marine fishes caught from the coasts of Sinop in the Black Sea, Turkey

2021 ◽  
Vol 38 (2) ◽  
pp. 219-222
Author(s):  
Sevilay Okkay ◽  
Ahmet Özer

Marine fish species such as grey wrasse Symphodus cinereus, common sole Solea solea, knout goby Mesogobius batrachocephalus and rusty blenny Parablennius sanguinolentus were studied for their parasitic isopods on the Sinop coast of the Black Sea. Two cymothoid species (Nerocila bivittata and Nerocila orbignyi) were identified. Nerocila bivittata was found on the body surface and fins of grey wrasse, common sole, knout goby, and N. orbignyi on the dorsal fin of rusty blenny. The prevalence and mean intensity values of each parasite species on fishes were calculated. Fish species mentioned above were all new hosts for N. bivittata and N. orbignyi in the Turkish coast of the Black sea.

2019 ◽  
Vol 56 (2) ◽  
pp. 132-140
Author(s):  
A. Güven ◽  
T. Öztürk

SummaryThe metazoan parasites were investigated of two flatfish the common sole, Solea solea (n:140) and the scaldfish, Arnoglossus laterna (n: 22) in the Sinop coast of Black Sea from June 2015 to June 2017. A total of 15 metazoan parasite species belonging to Digenea (6), Cestoda (3), Acanthocephala (1), Nematoda (4) and Isopoda (1) taxonomic groups were identified. Solea solea was found to be infected by Condylocotyla pilodora, Proctoeces maculatus, Opecoelidae gen. sp., Metadena sp., Stephanostomum sp., Progrillotia sp., Capillaria gracilis, Cucullanus campanae, Solearhynchus rhytidotes and Nerocila orbignyi. Arnoglossus laterna was found to be infected by Lecithochirium musculus and Grillotia erinaceus. Scolex pleuronectis, Hysterothylacium aduncum and Dichelyne minutus were determined in both flatfish. Infection prevalence and mean intensity values were re- corded for each parasite species. Infection values for each parasite species in relation to season and fish size were also determined and compared as comparatively. This study is the first one assessing the metazoan parasites both of S. solea and A. laterna collected from the Turkish coast of Black Sea. While Condylocotyle pilodora and Capillaria gracilis are new parasite records for S. solea, Grillotia erinecaus is new parasite record for A. laterna. Moreover, this paper is the first report on occurrence of Opecoelidae gen. sp., Metadena and Stephanostomum genera in S. solea.


2021 ◽  
Vol 4 (1) ◽  
pp. 38-54
Author(s):  
Serkan Saygun

In this study, the fish species inhabiting the Bolaman Stream drains to the Black Sea from the Fatsa coast (Ordu Province, Turkey) was reported for the first time. The study was caught out non-periodically by sampling from seven stations in the Bolaman Stream between July 2017 and November 2018. Fish samples were captured with an electroshock device. With this study, it was determined that the fish fauna of the Bolaman Stream is represented by 10 species in five families (Acheilognothidae, Cyprinidae, Gobiidae, Leuciscidae, and Salmonidae). These species were as follows, respectively Rhodeus amarus, Barbus tauricus, Capoeta banarescui, Neogobius fluviatilis, Ponticola turani, Alburnus derjugini, Squalius cephalus, Vimba vimba, Alburnoides fasciatus, and Salmo coruhensis.


Author(s):  
Tatia Kuljanishvili ◽  
Levan Mumladze ◽  
Bella Japoshvili ◽  
Namig Mustafayev ◽  
Shaig Ibrahimov ◽  
...  

The South Caucasus (SC) region is recognized for its high biological diversity and various endemic animal taxa. The area has experienced many fish introductions over the years, but the overall information about non-native fishes in the three SC countries, Armenia, Azerbaijan, and Georgia did not exist. Although these three countries belong to the Kura River drainage, Caspian Sea basin (only the western half of Georgia drains into the Black Sea), the legislative framework for each country regarding introduction of non-native fish species and their treatment is different and poorly developed. The goal of the present study was to make an initial inventory of non-native fish species in the three SC countries, and summarize the existing knowledge as a basis for future risk assessment models and formulation of regional management policies. Here, we present a unified list of 27 non-native species recorded in the wild in Armenia, Azerbaijan, and Georgia. Among these 27 species, eight were translocated from the Black Sea basin to the Caspian Sea basin. Out of these 27 non-native fishes, 15 species have become established (three of them being considered invasive) and six fish species could not survive in the wild.


Zootaxa ◽  
2021 ◽  
Vol 5060 (2) ◽  
pp. 33-64
Author(s):  
SEVGI KUŞ ◽  
GÜLEY KURT ◽  
MELIH ERTAN ÇINAR

The present paper deals with the diversity of nephtyid polychaetes (Nephtyidae) from the Sea of Marmara and the Black Sea. Three species belonging to two genera (Micronephthys and Nephtys) were found in the Black Sea (coast of Turkey) and six species belonging to three genera (Inermonephtys, Micronephthys and Nephtys) were found in the Sea of Marmara. The material includes two species new to science, Inermonephtys turcica n. sp. and Nephtys sinopensis n. sp., and a species record (Nephtys kersivalensis McIntosh, 1908) new to the Sea of Marmara’s marine fauna. Nephtys sinopensis n. sp. is mainly characterized by having 1–4 geniculate chaetae in the postacicular position of the parapodia; digitiform antennae, palps, and ventral cirri at chaetiger 1 with swollen tips; small and cirriform branchiae present from chaetiger 4 to the end of the body; poorly developed parapodial prechaetal lamellae in median and posterior chaetigers and long ventral cirri along the body. Inermonephtys turcica n. sp. is mainly characterized by having cushion-like palps with digitiform tips; well developed neuropodial postchaetal lamellae; barred chaetae in preacicular position of the anterior and median parapodia; and branchiae first appearing between chaetiger 3 and 13 (depending on body size).  


Crustaceana ◽  
2014 ◽  
Vol 87 (11-12) ◽  
pp. 1393-1410 ◽  
Author(s):  
F. Üstün ◽  
T. Terbiyik Kurt ◽  
E. Suárez-Morales

Cymbasoma sinopense sp. nov. is described from an adult female collected off the Sinop coast, in the southern Black Sea, Turkey. This is the first species of this genus recorded from the Black Sea coast of Turkey. The new species is a member of the widespread Cymbasoma longispinosum species-group, and it closely resembles C. chelemense Suárez-Morales & Escamilla, 1997 from the Yucatan Peninsula and C. californiense Suárez-Morales & Palomares-García, 1999 from the Gulf of California. This species can be distinguished by a combination of subtle characters, including the body proportions, the structure and armature of the fifth legs, the ornamentation of the genital somite, and the relative length of the ovigerous spines. A previous report of C. longispinosum from the northern Black Sea probably represented a misidentified record of C. sinopense sp. nov. The Mediterranean reports refer to a species that is different from the one of the Black Sea. Comparative comments and data including the main taxonomic characters of members of the Cymbasoma longispinosum species-group are presented. Overall, it is confirmed that records of this species from different geographic areas should be revised carefully because they could represent undescribed species. A key for the identification of the females of the currently known species assigned to the Cymbasoma longispinosum species-group is included.


Author(s):  
G. C. Kearn

An undulating movement of the body was observed in Entobdella soleae, a monogenean found on the blind surface of a mud-dwelling flat-fish, Solea solea, at Plymouth. The movement is described and shown to have a breathing function, the rate of undulation increasing with decreasing oxygen content of the ambient sea water and vice versa.The relationship between the movement and micro-habitat is discussed and the phenomenon is compared with breathing movements in other muddwelling animals.A similar movement was noted in three other skin-parasitic monogeneans: Acanthocotyle sp. from Raia clavata, Pseudocotyle squatinae from Squatina squatina and Leptocotyle minor from Scyliorhinus canicula.


Zootaxa ◽  
2018 ◽  
Vol 4461 (4) ◽  
pp. 539 ◽  
Author(s):  
DAVUT TURAN ◽  
CÜNEYT KAYA ◽  
MATTHIAS GEIGER ◽  
JÖRG FREYHOF

Barbus anatolicus, new species, is described from the Kızılırmak and Yeşilırmak River drainages in the southern Black Sea basin. It is distinguished from other Barbus species in the Middle East by having 58–71 total lateral line scales, a moderately ossified last simple dorsal-fin ray, serrated along about 70–80% of its posterior margin, many small irregular shaped black or brown spots, smaller or as large as scales, often forming large, dark-brown blotches on the head, back and flank in adults and juveniles, and a concave posterior dorsal-fin margin. In addition, DNA barcode data reject the hypothesis that it belongs to one of the other species of the B. barbus species group. Barbus bergi from Bulgaria and adjacent Turkey is treated as synonym of B. tauricus. Barbus tauricus was previously believed to be restricted to the Crimean Peninsula but is found to be widespread in the Black Sea basin. 


Author(s):  
Yu.V. Slynko ◽  
T.A. Polyakova ◽  
E.E. Slynko

Проведён молекулярно-генетический анализ фрагментов двух генов 18S-rRNA (длиной 568 п.н.) и 28S-rRNA (длиной 312 п.н.) цестод рода Bothriocephalus Rud., 1808, паразитирующих у скорпены Scorpaena porcus (Linnaeus, 1758) и у черноморской камбалы Scophthalmus maeoticus (Pallas, 1814), обитающих в Чёрном море. Материал был собран в северной части Чёрного моря возле побережья Крымского полуострова. Пробы тела паразитов фиксировали в 96 этаноле. В результате, как по каждому гену в отдельности, так и при их объединении установлено, что образец, извлечённый из скорпены (деп. в NCBI MH011407 18S-rRNA и MH000375 28S-rRNA), надёжно идентифицируется, как относящийся к кладе, содержащей B. timii, B. scorpii и B. australis, р-расстояние между нашим образцом и другими видами этой группы не превышает 1,6. Остальные три образца MH011408, MH011409, MH011410 (для гена 18s-rRNA) и MH000376 (для гена 28s-rRNA) сформировали отдельную кладу, состоящую из двух субклад: одна включает образцы МН011409 и МН011410, другая образец МН011408 (указаны только регистрационные номера для гена 18s-rRNA). Следует также отметить, что виды Bothriocephalus timii и Bothriocephalus scorpii дистанцированы всего лишь на 0,5, а Bothriocephalus timii и Bothriocephalus australis на 0,6. Гаплотипы вида Bothriocephalus claviceps составили внешнюю группу, р-расстояние от которого всех, как наших образцов, так и рассматриваемых видов комплекса scorpio , не опускалось ниже 26,3. Вместе с тем, дистанцированность объединённых гаплотипов цестод из черноморской камбалы на уровне 45 р-расстояний, а также значения бутстрепа позволяют полагать их близнецовыми видами (или подвидами) в пределах рода, по аналогии с генами мтДНК. В результате анализа нуклеотидной изменчивости данных фрагментов генов подтверждена принадлежность рассматриваемых экземпляров к роду Bothriocephalus, и они идентифицированы как виды, входящие в комплекс видов Bothriocephalus scorpii .Molecular genetic analysis of fragments of the two genes 18S-rRNA (568 bps long) and 28S-rRNA (312 bps long) cestodes of the genus Bothriocephalus Rud., 1808, parasitizing in Scorpaena porcus (Linnaeus, 1758) and at the Black Sea flounder Scophthalmus maeoticus (Pallas, 1814) living in the Black Sea. Material was collected in the northern Black Sea off the coast of the Crimean Peninsula. Samples of the body of parasites were fixed in 96 ethanol. As a result it was established both for each gene individually and when combining them that the sample extracted from scorpion ( in NCBI MH011407 18S-rRNA and MH000375 28S-rRNA) is reliably identified as referring to clade containing B. timii, B. scorpii and B. australis, the p-distance between our sample and other species of this group does not exceed 1.6. The remaining three samples MH011408, MH011409, MH011410 (for the 18s-rRNA gene) and MH000376 (for the 28s-rRNA gene) formed a separate clade which consists of two subclades: one includes samples MH011409 and MH011410 the other sample MH011408 (only registration numbers are indicated for MH011408 gene 18s-rRNA). It should also be noted that the species Bothriocephalus timii and Bothriocephalus scorpii are only 0.5 apart while Bothriocephalus timii and Bothriocephalus australis are 0.6 apart. Haplotypes of the species Bothriocephalus claviceps constituted an external group, the p-distance from which of all both our samples and the species of the scorpio complex under consideration did not fall below 26.3. At the same time the distance between the combined haplotypes of cestodes from the Black Sea flounder at the level of 45 p-distances as well as bootstrap values allow us to consider them to be twin species (or subspecies) within the genus by analogy with mtDNA genes. An analysis of the nucleotide variability of these gene fragments confirmed the affiliation of the examined species to the genus Bothriocephalus and they were identified as species forming part of the complex of species Bothriocephalus scorpii.


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