Dahurinaia transbaicalica sp. n. (Bivalvia, Margaritiferidae)
a New Species of Pearl Mussels from Transbaikalia, with Remarks on the Natural
History of Far Eastern Naiads. Klishko Î. Ê. — Dahurinaia transbaicalica sp.
n. is described. The new species shows similarity with European Margaritifera
and differs from other Dahurinaia by morphological and morphometric characters,
including dentition and soft body. Natural history of the naiad fauna of Transbaikalia
and South of Far East Russia is analysed. D. transbaicalica sp. n., together with
5 other species of the genus Dahurinaia, inhabits rivers Ingoda and Onon in the
higher part of Amur and a blinddrainage Arey Lake (reservoir-refuge), which had
river connection with Amur in the past.
Key words: Bivalvia, Margaritiferidae, pearlmussels, Transbaikalia, new species.
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Species Composition and Structure of Ant Communities
(Hymenoptera, Formicidae) at Estuary Shores of North-Western Crimea. Stukalyuk
S. V., Radchenko V. G. — 6 species of ants on the territory of coastline phytocoenoses
at the estuaries of North-Western Crimea were revealed. Myrmica bergi Ruzsky,
1902 dwells in the associations of saltwort, and also in the area of wheat grass
associations, in which Cardiocondyla stambuloffi Forel, 1892 and Tetramorium caespitum
(Linnaeus, 1758) joins. In wormwood associations M. bergi occurs together with
Formica imitans Ruzsky, 1902, Lasius psammophilus Seifert, 1992 and Plagiolepis
tauricus Santschi, 1920. Forage area of M. bergi occupies 3 different phytocoenoses:
saltworts associations (internal coastal area) are a main source of forage of
animal origin; wheat grass associations (intermediate area) with a transit function;
and wormwood associations (external area) with aphid colonies. The dynamic density
of workers diminishes during transition from the internal to external area. The
affected zones are interconnected by ant individuals, migrating from the internal
to external via the intermediate area at the morning hours, and reverse in the
evening. M. bergi dominated in the intermediate area, codominant L. psammophilus
appeared in external area. Both species at the dynamic density maximal indexes
do not penetrate on other species neighbouring colony territory. An activity peak
of C. stambuloffi and T. caespitum in the intermediate area accounts for an activity
decline of M. bergi. In the external area a peak of activity for P. tauricus accounts
for an activity decline of M. bergi and L. psammophilus.
Key words: associations of ants, forage area, dynamic density.
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Road Mortality of Amphibians (Amphibia) in
Lviv Region: Problem Status and Estimating Criteria. Reshetylo O. S., Mykitchak
T. I. — 60 places of amphibian mortality on the main roads of Lviv Region
were found out. 3555 individuals of 13 victim species were observed. The Common
Toad Bufo bufo and Common Frog Rana (Rana) temporaria are the most numerous ones
and make over 90% in total. Different factors of influence over the amphibian
mortality were analyzed, but the emphasis is put on three key ones with the corresponding
parameters that are proposed to be used for establishing of the influence level
of roads on amphibian mortality. They are as follows: number of killed individuals,
traffic intensity, distance between road and breeding place. The seasonal dynamics
of amphibian migrations were investigated in details on one of the model areas
within the region. By the example of typical species it was shown that migration
features, even having some species peculiarities, keep general migration tendencies
and display three peaks of amphibian migration activity during the season — second
half of April, July, the end of September — October.
Key words: roads, amphibians, mortality, migrations, Lviv region.
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Characteristics of Distribution of the Common
Dolphins, Delphinus delphis (Cetacea), in the Black Sea. Mikhalev Yu. A. —
The data of the aircraft surveys (and partly from ships) of the Black Sea common
dolphins D. delphis Barabasch, 1935 from March to November 1976–1987 are analyzed.
The maps of the distributions by months are provided. It is shown that the common
dolphins can be found through all area of the Black Sea, near coast and in deep
waters, around gatherings of their primary food objects, first of all khamsa and
sprat. As the medium size of the groups increases from 6.6 dolphins in May to
8.3 dolphins in September, there is a tendency of lower distribution index in
September. The distribution of the common dolphins in coast area and deep waters
was virtually the same: distribution indexes were respectively 24.6 and 26.5.
In the western part of the sea the distribution was 25% lower than in average
and 45% lower than in the eastern part.
Key words: air-shoot, common dolphin, frequency of occurrence, distribution, Black
Sea.
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The Analysis of Morphological and Genetic
Variation of the Snail, Lymnaea stagnalis s. l. (Gastropoda, Lymnaeidae), in Ukraine.
Mezhzherin S. V., Garbar A. V., Korshunova E. D., Zhalay E. I. — Analysis
of allozyme and morphological variation of Lymnaea stagnalis s. l. is done within
Ukraine. It is established that in central and western populations, on the one
side, and in the eastern ones, on the other, alternative alleles of Es-1, Es-4
loci are fixed, and in the Dnieper river-bed there are populations containing
two alleles in equal proportion. The discovered situation corresponds to the model
of two allospecies connected with rather narrow zone of gene introgression and
contradicts the conception of two sympatric species (L. stagnalis and L. fragilis).
The analysis of morphological characters variability shows differences between
western and eastern allospecies in shell enlargement, turn quantity increase and
coloring lightening in eastern forms in comparison with the western ones.
Key words: Lymnaea stagnalis, systematics, allozymes, morphological variation,
phylogeography.
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Some Skeletal Peculiarities of Rhea americana
(Rheiformes, Rheidae) with Respect of Ratitae Evolution. I. A. Bogdanovich.
— Some peculiarities of Rhea americana pelvis and femur are analyzed in comparative
and functional aspects. High level of correlation between the width of the pelvis
and that of the sternum is shown to occur in representatives of 35 species and
10 orders of the carinate birds. In respect to pelvis morphology of Rhea and close
related ratitae, it allows to suppose in particular the primary character of its
flightlessness.
Key words: flight, evolution, ratitae.
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Description of Male and Redescription of Female
of Anthoseius victorovi (Parasitiformes, Phytoseiidae). Kolodochka L. A., Omeri
I. D. — The illustrated description of new male with redescription of female
of phytoseiid mites Anthoseius (Mumaseius) victorovi Wainstein as well as measurements,
diagnosis and habitat data are given.
Key words: phytoseiid mites, Anthoseius (Mumaseius) victorovi, Ukraine.
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The First Record of the Genus Pseudotolida
(Coleoptera, Mordellidae) from Vietnam and Far East Russia. Odnosum V. K.
— The mordelliid beetle Pseudotolida awana (Kono, 1932) of the genus Pseudotolida
Ermisch, 1950 is recorded for the first time from Russia and Vietnam. The male
is redescribed in details (including shape of the maxillar palpus, pygidium, elytra,
male urosternite 8, and structure of the wing), and the female is described for
the first time. New data on the distribution of the species are provided.
Key words: Coleoptera, Mordellidae, Pseudotolida, P. awana, Russia, Vietnam, fauna,
register, description, male, female, geographic distribution.
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Description of the Old-Stage Larva of the
Weevil Liparus tenebrioides (Coleoptera, Curculionidae). Nazarenko V. Yu.
— Old-stage larva of the weevil L. tenebrioides (Pallas, 1781) is described in
details using chaetotaxy. Keys to larvae of 4 species of Liparus and information
about host plants are given.
Key words: Liparus tenebrioides, Coleoptera, Curculionidae, larva, morphology,
chaetotaxy.
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Migrations of Fresh-Water Bivalves of Euglesidae
è Pisidiidae (Bivalvia, Pisidioidea) on Tidal Zone of the Tuloma River Estuary.
Frolov A. A. — Migration of fresh-water bivalves Henslowiana henslowana, Euglesa
ponderosa, Pseudeupera subtruncata (Euglesidae) and Pisidium amnicum (Pisidiidae)
was investigated in tidal zone of the Tuloma River estuary (Kola Peninsula). Daily
and seasonal migrations of the mollusks in tidal zone were found. The main reason
of daily migrations of the bivalve mollusks is tides. Seasonal migrations of the
bivalves depend on their reproductive cycles. Features of locomotion of these
bivalves are studied in a field and laboratory experiments.
Key words: bivalves, migration, locomotion, tidal zone, estuary, Tuloma.