Morphological features of two sibling species,
Morphological differences between two closely species
Zotov V.A., Alpatov A.M.
Orcadian rhythms of activity were compared in ground-dwelling Tenebrionid beetles from the Kara-Kum desert:
Two new taxa,
Sundukov Yu. N.
Species diversity in agroecosystems and adjacent biotopes is mainly the same. However, in central parts of fields, the value of this parameter is essentially lower. Characteristics of spider assemblages are different in the central part and edges of fields. Species-agrobionts of the families Linyphiidae, Tetragnathidae, Lycosidae, common for the temperate zone of Europe, predominated in central parts of fields. The maximum activity of most dominant species was observed in the middle of crop growing periods. The data on the spatial and temporal activity of epigeic spiders showed that they might fall into objects of pest control over the territories of agroecosystems.
Khakhalkina N.A., Yastrebov M.V.
The musculature of body, organs of attachment and copulatory organs of
Abaturov B.D., Larionov K.O., Kolesnikov M.P., Nikonova O.A.
A response of saigas to forage supply was investigated in three types of phytocenoses: steppe with the predominance of bunch grasses; semi-desert with complex desert and steppe vegetation; and pasture with ruderal vegetation in conditions of overstocking. In all the cases, the species composition of consumed plants, the level of forage and energy consumption, digestibility of diet and dynamics of increase in the body weight of experimental animals were determined. The desert-steppe pasture with an abundance of dicolytedonous plants with long growing period, which are well eaten by animals, satisfied requirements of saigas. This pasture supplied animals with food of full value for the whole year round and provided the positive material and energetic balance of animals. The steppe sod grass-forb pasture was little or fully unsuitable for animals. The abundance of badly eaten bunch grasses
The data on three species of the genus
Udaloi A.V., Novikov E.A.
Matafonov D.V., Itigilova M. Ts., Kamaltynov R.M., Faleichik L.M.
The Baikalian species
Trophic relations of leaf-rolling weevils are considered. The majority of these beetles develops within a narrow host range: usually, on plant species of one or two genera of the same family and less often, on those of two close families. Some representatives of Rhynchitidae and leaf-rolling weevils (Attelabidae) dwell on plants of several families due to the higher possibilities for them to develop in dead plant tissues.
Korneva Zh. V.
Morphogenesis of the male copulatory apparatus in
РОЖНОВ В.В., ХЛЯП Л.А., КОРЕНБЕРГ Э.И.