Dagestan

Materials for the helminthofauna of the green toad Bufotes viridis (Anura, Amphibian) in the Republic of Dagestan

Authors: Chikhlyaev I. V., Askenderov A. D., Faizulin A. I.

The helminth community of the Green toad Bufotes viridis (Laurenti, 1768) from the population inhabiting the Caspian basin on the territory of the Republic of Dagestan is characterized. The study was carried out according to the method of full helminthological autopsy. Six species of helminths belonging to two types have been registered: Nematoda (4) and Acanthocephala (2).

Description of cases of axial bifurcation of the Mediterranean Spur-thighed tortoise – Testudo graeca Linnaeus, 1758 (Testudinidae, Reptilia) based on field research and herpetological collection of ZIN RAS

Authors: Gordeev D. A., Mazanaeva L. F., Gichikhanova U. A.

Axial duplications are the most complex variant of anomalies characteristic of animals, including turtles. For turtles, the following variants of duplications are described: anakatamesodimus, derodimus, dicephaly, Siamese twins. We present a description of two specimens of the Mediterranean tortoise (Testudo graeca Linnaeus, 1758): with dicephaly and ischio-omphalopagia, a variant of Siamese twins, in which lateral fusion occurs in the region of the sacrum.

Variability of morphophysiological parameters of green toads of the Bufotes viridis complex (Anura, Amphibia) depending on altitude zoning

Authors: Gamidova D. M., Askenderov A. D., Rabadanova A. I.

In Dagestan, morphometric parameters of the body and cytomorphological parameters of erythrocytes were studied in 124 green toads from four regions. In the course of the analysis of variance, variability between populations in these parameters was revealed, which is associated both with the influence of altitudinal zonality, sex, and the interaction of these factors.

Age structure and growth of the oriental tree frog (Hyla orientalis, Amphibia, Hylidae) in the Samur Forest (North-Eastern Caucasus)

Authors: Kidov A. A., Ivolga R. A., Kondratova T. E., Ivanov A. A., Mazanaeva L. F., Askenderov A. D.

The paper presents the results of studying the age structure and growth of the eastern tree frog (Hyla orientalis) in the Samur Forest. In the Primorskiy village (Magaramkent district, Republic of Dagestan, Russian Federation) in the first decade of May 2022, 7 females and 13 males were captured. The age of animals was determined by the cross sections of phalanx by standard method of skeletochronology. Age of females was 2–5 years (3.4 on average), males 1–6 years (3.4 on average).

Some data on the parasite fauna of the Caucasian agama Paralaudakia caucasia Eichwald, 1831 (Agamidae, Reptilia) in Dagestan

Authors: Gadzhiramazanovа A. G., Gichikhanova U. A., Mazanaeva L. F.

Information on the species composition of the parasite fauna of the Caucasian agama P. caucasia is given. In total, 12 individuals of the Caucasian agama were studied and 5 species of helminths were found (Macracanthorhynchus catulinus, Thelandros popovi, T. markovi, Parapharyngodon brevicaudatus, Parapharyngodon szczerbakin). Ectoparasites were not found on the studied agamas.

On the Reduction of the Area and Abundance of the Greek Tortoise Testudo graeca Linnaeus, 1758 (Testudinidae, Reptilia) on the Primorsky Lowland of Dagestan and Problems of its Conservation

Authors: Mazanaeva L. F., Gichihanova U. A.

Data on the status of the populations of Testudo graeca Linnaeus, 1758 on the Primorsky lowland of Dagestan are given. The research was conducted in 2014 - 2018. Over the past few decades, the range of this species on the Primorsky lowland has reduced by nine or more times. Viable populations were preserved on the coastal dunes and semidesert-steppe landscapes in the vicinity of the Aji Lake (1,300 hectares) and along the fringes and outskirts of the forest in the Samur River delta (2,100 hectares).