Contents of Proceedings of the Zoological Institute

Volume 322 (1), 2018

Date of publication — March 23, 2018

On taxonomic status of shiled-head vipers from Turkish Lesser Caucasus and East Anatolia

A high morphological specialization is noted for vipers from the isolated populations of the Otlubekli Daglari Ridge, Zekeriya Village, Ardahan pass, Mt. Ilgar-Dag (Turkey), Javakheti Plateau (Armenia, Georgia). New forms of shield-head vipers are described from the Turkish Lesser Caucasus and east Turkey: Pelias sakoi sp. nov. (Otlubekli Daglari Ridge), Pelias darevskii uzumorum ssp. nov. (Southern limestone part of the Yalnizcam Daglari Ridge), Pelias darevskii kumlutasi ssp. nov. (Northern volcanic part of the Yalnizcam Daglari Ridge). Keys to identification of species and subspecies of the Pelias darevskii-olguni complex are given, and ecological differences of its representatives are discussed. The cluster and discriminant analyses on morphological features allow us to consider these vipers as separate taxa, whereas the molecular analysis on cytb does not give significant differences for most populations. This result should not be perceived unambiguously in favor of conspecificity of the considered populations. In addition to the morphological differences of the vipers, we consider such ecological differences as biotope preference, age and size of the puberty, the history of landscapes and habitats, mezoclimatic habitat characteristics, etc. Given the southern location of the Otlubekli Daglari Ridge and no signs of glaciation there, the vipers from the vicinity of Erzincan should be regarded as an ancient relic isolated form. The climate of this area has contributed to the conservation of ancient Eastern Mediterranean relics both among plants and animals.

A new species of the genus Cixius (Hemiptera: Fulgoroidea: Cixiidae) from Krasnodar Territory.

Cixius (Orinocixius) lermontovi sp. nov. is described from Black see coast of Krasnodar Territory of Russia. This is 6th species of the genus Cixius Latreille recorded from this region so far and 27th species for the fauna of Russia. The new species differs from all other species of the subgenus Orinocixius by small size (body length with wings) – 3.0 mm. C. (O.) lermontovi sp. nov. is closely related to C. (O.) cambricus China, 1935 and C. (O.) carniolicus Wagner, 1939 according to arrangement and size of phallotheca teeth and length of male anal tube, but well distinguished by body size and dark brown coloration of the head, pro-, and mesonotum. C. (O.) lermontovi sp. nov. is characterized by wide pygofer, with hind margins strongly convex, male anal tube 4 times as long as wide medially, phallotheca with two lateral areas of weak sclerotization, denticles ventrally and two lobe-shaped combs dorsally – left comb deeply concave proximally and right comb convex, 3 movable teeth are near to the base of the distal segment of penis – upper tooth large, directed upwards and lower tooth small, directed downwards on left side, one large tooth directed upwards on the right side, lower margin of phallotheca with two strong teeth proximally.

Influence of the environmental factors on species diversity and quantitative development of zoobenthos  in the Neva Bay.

Hydrochemical characteristics, primary production of plankton, taxonomic composition, species richness, species diversity and quantitative characteristics of the benthic fauna of the Neva Bay had been collected and analyzed at the end of July and the very beginning of August 2003–2012 by the method stepwise regression, calculated equations with a free constant. Effects of biotic and abiotic factors on the structural and functional characteristics of benthic communities in the Neva Bay were evaluated using multiregression analysis. Research period had been accompanied by revival of industry of Saint-Petersburg, construction of ports, active navigation, development of Sea facade and completion of the construction of the St. Petersburg Flood Prevention Facility Complex and a large-scale hydrotechnical works: building of a Marine Multifunctional Reloading Complex (MMRC) “Bronka” and approach fairway to it. Results of statistical analysis showed that the number of species and species diversity of bottom animals in the Neva Bay declined with increased primary production and chlorophyll a concentration. Analysis of the factors influencing the values of biomass of benthic animal communities shows that these characteristics increased with growing chlorophyll concentration. During the anthropogenic stress of 2006–2007, the existing links between the structural characteristics of the zoobenthos and the functional biotic characteristics of the Neva Bay were completely destroyed. Restoration period 2008–2012 was accompanied by an increase in the species richness and species diversity of zoobenthos to the level observed before anthropogenic stress.

Zooplankton of mountain and lowland waterbodies of Northwestern India

In 2013–2015, 9 waterbodies situated in mountain and lowland regions of Northwestern India were studied. 46 species of zooplankton organisms were revealed, among them 18 Rotifera species, 20 Cladocera, 8 Copepoda, and 1 species of Anostraca. For this part of India, it was the first time detected 8 Rotifera species, 5 Cladocera, and 2 Copepoda. Cosmopolites and Paleotropic species were registered in all waterbodies studied in the Himalayans and lowland India. Palearctic and Holarctic species — in the Himalayans only. Tropic species were found in lowland India only. Species number and zooplankton species diversity index were low. Zooplankton density was relatively high in one from four mountain lakes and in all lowland waterbodies (99–487 thousands ind./m3). Zooplankton biomass was low (0.04–8.00 g/m3) in both mountain and lowland lakes, in exception two lowland lakes with wind onset and overwintering place for large birds. Rotifera dominated by biomass only in mountain region. Cladocera predominated in zooplankton density and biomass in majority of studied waterbodies. This group was represented by coastal and macrophyte forms which are usual for shallow waterbodies. Copepoda were abundant in five studied waterbodies and basically were represented by Cyclopoida. Calanoida group (Diaptomidae) was revealed in only one lowland lake located in a desert. Macrofiltrators represented the main part of zooplankton trophic structure. Microphages and predators subdominated in zooplankton communities.




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Last modified: September 19, 2017