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  • Author: S. Utevsky x
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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.

First Record of the Boreal-Arctic Marine Leech Mysidobdella Borealis (Hirudinida, Piscicolidae) from the Southern Bay of Biscay

Four individuals of the marine fish leech Mysidobdella borealis (Johansson, 1898) were sampled from the mysids Schistomysis parkeri Norman, 1892 from the swash zone of Hendaye beach, France. This is the only known so far boreal-arctic piscicolid species occurring from the southern Bay of Biscay to the Kara Sea.

Abstract

The aim of this research was to test the ability of hybridizing Hirudo orientalis S. Utevsky et Trontelj, 2005 and Hirudo verbana Carena, 1820. We obtained offspring from both species. The color pattern of all the hybrids was uniform and quite different from both the parents. The venter was similar to H. verbana. The dorsum was very similar to the color pattern of Hirudo medicinalis Linnaeus, 1758 that was not involved to the experiment. The coloration pattern of the hybrids, which is very similar to that of H. medicinalis suggests the hybrid origin of this species.

The First Record of Helobdella nuda (Hirudinida, Glossiphoniidae) in Lake Baikal. Kaygorodova I. A., Utevsky S. Yu. - By far, the leech species Helobdella nuda (Moore, 1924) was known from China and the Amur River basin. It is found to occur in shallow waters of Lake Baikal.

Abstract

A part of the COI mitochondrial barcoding gene was sequenced from seven species of different taxonomical groups: Ambystoma mexicanum (Amphibia, Ambystomatidae), Darevskia lindholmi, Lacerta agilis exigua (Reptilia, Lacertidae), Erinaceus roumanicus (Mammalia, Erinaceidae), Macrobiotus sp. 1 and 2 (Eutardigrada, Macrobiotidae) and Cameraria ohridella (Insecta, Gracillariidae). The sequences were compared with available sequences from databases and positioned on phylogenetic trees when the taxa had not yet been sequenced. The presence of Mexican axolotls in herpetoculture in Ukraine was confirmed. The partial COI genes of the Crimean rock lizard and an eastern sub-species of the sand lizard were sequenced. We demonstrated the presence of two tardigrade mitochondrial lineages of the Macrobiotus hufelandi group in the same sample from the Zeya Natural Reserve in the Far East: one was nearly identical to the Italian M. macrocalix, and the other one is similar to M. persimilis and M. vladimiri. We also confirmed the presence of the invasive haplotype “A” of the horse chestnut leaf miner in Ukraine, in line with the hypothesized route of invasion from Central Europe.