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A. Öktener and S. Utevsky

New Information on the Hosts and Distribution of the Marine Fish Leeches Trachelobdella Lubrica and Pontobdella Muricata (Clitellata, Hirudinida)

Fish leeches collected in the Aegean Sea, the Sea of Marmara and the Black Sea were examined. Trachelobdella lubrica (Grube, 1840) was recorded for the first time from the ballan wrasse Labrus bergylta (Osteichthyes, Labridae), marine bream Diplodus vulgaris (Osteichthyes, Sparidae) and the grouper Epinephelus aeneus (Osteichthyes, Serranidae) from aquiculture. The leeches of this species were found in the Aegean Sea and the Sea of Marmara on the body surface, in the mouth and gill cavities of their hosts. Leeches identified as Pontobdella muricata (Linnaeus, 1758) were collected from the thornback ray Raja clavata (Chondrichthyes, Rajidae) in the Black Sea.

Open access

Piotr ŚwiĄtek, Anna Świder and Aleksander Bielecki

Sperm Transfer Through the Vector Tissue in Piscicola Respirans (Clitellata, Hirudinea, Piscicolidae)

In fish leeches (Piscicolidae) indirect (hypodermic) insemination has evolved, thus the spermatophores are released in the specialised region of the body wall known as a copulatory area or a copulatory region. The way in which the spermatozoa reach the ovaries is not fully understood. In piscicolids beneath the copulatory area there is a specialized connective tissue (vector tissue), which is thought to guide the spermatozoa toward the ovaries. To date the structure of the vector tissue has not been observed in copulating specimens, which have spermatophores implanted in their coplulatory area. Here we present the first ultrastructural observation of massive sperm transfer from the spermatophore throughout the vector tissue to the ovaries. Our results show that the sperm transfer is both massive and rapid. The migrating spermatozoa form huge aggregations which push aside the vector tissue cells, in such a way that between these cells voluminous gaps are formed. Unexpectedly to our previous suggestions, the ultrastructural pictures show that the long cytoplasmic processes of granular cells, which constitute the main mass of the vector tissue, are not engaged in sperm transport. We suggest that the sperm is pumped with a high pressure from the spermatophore into the vector tissue, and as a result the vector tissue cells are pushed aside and spermatozoa can freely pass between them.

Open access

M. V. Kovalenko and S. Yu. Utevsky

. - Nauka : Leningrad, 1976. - 484 p. - Russian : Лукин E. И. Пиявки. Фауна СССР. Mavarez J., Salazar C. A., Bermingham E. et al. Speciation by hybridization in Heliconius butteflies // Na­ture. - 2006. - 441, N 15. - P. 868-871. Moquin-Tandon A. Monographie de la familledes. Hirudinees. - Paris : J.-B. Chez A. Ailliere, 1846. - 454 p. Nesemann H., E. Neubert. Annelidae, Clitellata: Brachiobdellida, Acanthobdellea, Hirudinea // Süßwasser­fauna von Mitteleuropa / Eds J. Schwoerbel, P. Zwick. - Heidelberg : Spektrum, 1999

Open access

Adrian Gagiu

References CRISTEA, V., D. MANOLELI, 1977 - Conspectus des sangsues (Hirudinea) de Roumanie avec une clef de détermination. Travaux du Muséum d'Histoire Naturelle "Grigore Antipa", 18: 23-56. DESALLE, R., M. G. EGAN, M. SIDDALL, 2005 - The unholy trinity: taxonomy, species delimitation and DNA barcoding. Philosophical Transactions of the Royal Society, Biological Sciences, 360: 1905-1916. JUEG, U., 1999 - Egel und Krebsegel (Clitellata: Hirudinea u. Branchiobdellida) - zwei in

Open access

A. B. Chaplygina, D. I. Yuzyk and N. O. Savynska

Abstract

The role of the robin, Erithacus rubecula Linnaeus, 1758 as a consort of autotrophic consortia is considered. It has been found that representatives of 9 higher taxa of animals (Mammalia, Aves, Gastropoda, Insecta, Arachnida, Acarina, Malacostraca, Diplopoda, Clitellata) have trophic and topical links with the robin. At the same time, the robin is a consort of determinants of autotrophic consortia, which core is represented mostly by dominating species of deciduous trees (Quercus robur Linnaeus, 1753 (24.6 %), Tilia cordata Miller, 1768 (17.5 %), Acer platanoides Linnaeus, 1753 (22.8 %), Acer campestre Linnaeus, 1753), and also by sedges (Carex sp.) and grasses (Poaceae). The robin also belongs to the concentre of the second and higher orders as a component of forest biogeocenoses and forms a complex trophic system. In the diet of its nestlings, there have been found 717 objects from 32 invertebrate taxa, belonging to the phylums Arthropoda (99.2 %, 31 species) and Annelida (0.8 %, 1 species). The phylum Arthropoda was represented by the most numerous class Insecta (76.9 %), in which 10 orders (Lepidoptera (46.8 %) dominates) and 20 families were recorded, and also by the classes Arachnida (15.0 %), Malacostraca (5.3 %) and Diplopoda (1.9 %). The invertebrate species composition was dominated by representatives of a trophic group of zoophages (14 species; 43.8 %); the portion of phytophages (7 species; 21.9 %), saprophages (18.7 %), and necrophages (15.6 %) was the less. The highest number of food items was represented by phytophages (N = 717; 51 %), followed by zoophages (34 %), saprophages (12 %), and necrophages (3 %). The difference among study areas according to the number of food items and the number of species in the robin nestling diet is shown. In NNP “HF”, the highest number of food items was represented by phytophages - 47 % (N = 443), whereas zoophages were the most species-rich group (43.3 %, 13 species). In NNP “H”, phytophages also prevailed in food items - 62.3 % (N = 164), but the number of phyto-, zoo- and saprophage species was equal (30.8 %, 13 species). In the forest park, zoophages were more frequent - 45.5 % (N = 110), but phytophages were the most species-rich (42.9 %).

Open access

S. Bulguroğlu, J. Korun, M. Gökoğlu and Y. Özvarol

., Williams, J. L., Nagasawa, K., Burreson, E. M., (2007): A collection of fish leeches (Hirudinida: Piscicolidae) from Japan and surrounding.waters, including redescriptions of three species. J. Parasitol., 93(4): 875–883. DOI: 10.1645/GE-979R1.1 http://dx.doi.org/10.1645/GE-979R1.1 [5] Govedich, F. R., Moser, W. E., Davies, R. W. (2004): Annelida: Clitellata, Hirudinea, Euhirudinea. In: YULE, C. M., SEN, Y. H. (Eds) Freshwater İnvertebrates of the Malaysian Region. Kuala Lumpur: Academy of Sciences Malaysia, pp. 175

Open access

A. A. Antipov, T. I. Bakhur, D. V. Feshchenko, T. A. Romanishina, N. V. Avramenko, V. P. Goncharenko, O. A. Zghozinska, L. M. Solovyova, N. V. Koziy, R. V. Pidborska, V. S. Shahanenko, V. I. Dzhmil and N. V. Tyshkivska

., Neghina, A. M., Marincu, I., Iacobiciu, I. 2011. Epidemiology and history of human parasitic diseases in Romania. Parasitology Research, 108 (6), 1333-1346. Nosal, P., Kowal, J., Nowosad, B. 2010. Structure of Metastrongylidae in wild boars from southern Poland. Helminthologia, 47 (4), 212-218. Novo, M., Almodovar, А, Fer nandez, R., Giri bet, G., Cosin, D. J. D. 2011. Understanding the biogeography of a group of earthworms in the Mediterranean basin - Th e phylogenetic puzzle of Hormogastridae (Clitellata: Oligochaeta). Molecular

Open access

Ahmet Öktener

(Clitellata: Hirudinida: Piscicolidae), Vestnik zoologii , 44, 4, 33-36. 68. Özer A., Sezgin T. and Erdem O., 2000 – A study on the Hysterothylacium aduncum (Nematoda, Anisakidae) infections in the whiting (Merlangius merlangus), Symposium of National Aquatic Products, 20-22 Eylül 2000, Sinop, 632-641. 69. Özer A., Ünsal G. and Olguner A. M., 2007 – Sinop Kıyılarından Yakalanan Tirsi Balığında, Alosa pontica Eichwald, 1838 Belirlenen Hysterothylacium aduncum (Rudolphi, 1802) ve Livoneca punctata (Uljanin, 1872) Enfeksiyonları, XIV, Ulusal Su Ürünleri Sempozyumu