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_СОВРЕМЕННАЯ ГЕРПЕТОЛОГИЯ. 2021. Т. 21, вып. 3/4. С. 138 - 143_
Current Studies in Herpetology, 2021, vol. 21, iss. 3-4, pp. 138-143
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New data on the distribution of Pallas's spadefoot toad (Pelobates vespertinus (Pallas, 1771)) and fire-bellied toad (Bombina bombina L., 1761) (Anura, Amphibia) on the territory of the Saratov region and adjacent territories
V. G. Tabachishin 1H, M. V. Yermokhin 2
' Saratov Branch of A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences
24 Rabochaya St., Saratov 410028, Russia 2 Saratov State University 83 Astrakhanskaya St., Saratov 410012, Russia
Abstract. New data on the geographical distribution of Pelobates vespertinus and Bombina bombina in the Saratov region and adjacent districts of the Volgograd, Voronezh, Penza and Ulyanovsk regions are presented. The habitation of B. bombina and P vespertinus populations in 25 and 22 localities, respectively, was established. Most modern populations of these species of anuran amphibians have been recorded near water bodies in river valleys. Keywords: anuran amphibians, populations, new localities
For citation: Tabachishin V. G., Yermokhin M. V. New data on the distribution of Pallas's spadefoot toad (Pelobates vespertinus (Pallas, 1771)) and fire-bellied toad (Bombina bombina L., 1761) (Anura, Amphibia) on the territory of the Saratov region and adjacent territories. Current Studies in Herpetology, 2021, vol. 21, iss. 3-4, pp. 138-143. https://doi.org/10.18500/1814-6090-2021-21-3-4-138-143
Article info
Short Communication https://doi.org/10.18500/1814-6090-2021-21 -34-138-143
Received 22 July 2021, revised 23 September 2021, accepted 28 September 2021
This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY4.0)
Currently, the Pallas spadefoot toad (Pelobates vespertinus) and the fire-bellied toad (Bombina bombina) are among the most widespread and abundant species of anuran amphibians to form the structure of vertebrate communities in the river valleys of the Saratov region and adjacent territories (Kaybeleva et al., 2019). However, a significant climate transformation has been observed from the second half of the 20th and at the beginning of the 21st centuries. Warming leads to significant shifts in the seasonal phenomena of the annual cycle of anuran amphibians (Yermokhin et al., 2013 a, 2014, 2016; Yermokhin, Tabachishin, 2021). In addition, climatic changes lead to a local decrease in water content in the southeastern European Russia (Kireeva,2013).
The system of floodplain water bodies in river valleys is noticeably degrading. This factor has a negative effect on the reproductive biology of local populations of anuran amphibians, disrupts the development of tadpoles by limiting the possibility of their successful completion of metamorphosis. Therefore, the death frequency of entire cohorts of anuran amphibians breeding in floodplain lakes has significantly increased. As a result, as in many other world regions (Stuart et al., 2004; Reading, 2007; Zylstra et al.,
2019 a, b), amphibian populations are simplified, accompanied by a multiple decrease in their numbers. In addition, the disappearance of spawning water bodies when they dry up for a long time leads to the complete degradation of local populations of tailless amphibians and to a significant fragmentation of their spatial distribution. That is why conducting research on the distribution of these amphibians in dynamically transforming weather and climatic conditions in the Southeastern European Russia seems to be especially relevant for analyzing and assessing the short-term and medium-term prospects of the state of their populations.
Anuran amphibians were recorded on the territory of the Saratov region and adjacent ones (Ulyanovsk, Penza, Voronezh and Volgograd regions) in April-October 2009-2021 (Tables 1 and2).Toregis-ter the finding ofindividuals ofthese species, we used route counts, the method of linear fences with pitfall traps (during the period of spawning migrations and metamorph dispersal), as well as the bioacoustic method (Corn, Bury, 1990; Yermokhin, Tabachishin, 2011; Belyachenko et al., 2014). The coordinates of finds were determined using GPS navigators Garmin eTrex H (Garmin Ltd., Taiwan).
Corresponding author. Saratov branch of A. N. Severtsov Institute of Ecology and Evolution, RussianAcademy of Sciences, Russia.
ORCID and e-mail addresses: Vasily G. Tabachishin: https://orcid.org/0000-0002-9001-1488, tabachishinvg@sevin.ru; Mikhail V. Yermokhin: https://orcid.org/0000-0001-6377-6816, yermokhinmv@yandex.ru.
Table 1. Localities of the revealed populations of Bombina bombina in the Saratov region and adjacent territories
No. Locality Coordinates Year
N E
Saratov region
1 Pond, near the city Khvalynsk 52.522143 48.065272 2009
2 Floodplain of the Volga river, near the village Chardym (Voskresenskiy district) 51.772981 46.304148 2009
3 Floodplain of the Latryk river, near the village Eremeyevka (Saratovskiy district) 51.500873 45.801600 2020
4 Floodplain of the Latryk river, near the village Novoaleksandrovka (Saratovskiy district) 51.500379 45.773678 2020
5 Pond, near the village Alexandrovka (Saratovskiy district) 51.514810 45.859201 2018
6 Pond, near the village Kuvyka (Tatishchevskiy district) 51.634832 45.613857 2020
7 Floodplain of the Khoper river, near the village Letyazhevka (Arkadakskiy district) 51.883163 43.395860 2009
8 Lake Rasskazan', near the village Rasskazan' (Balashovskiy district) 51.547760 42.613673 2019
9 Lake Koblovo (floodplain of the Medveditsa river), near the village Uritskoye (Lysogorskiy district) 51.310816 44.833772 2011
10 Lake Sadok (floodplain of the Medveditsa river), near the village Uritskoye (Lysogorskiy district) 51.359043 44.801349 2013
11 Lake Lebyazhye (floodplain of the Medveditsa river), near the village Uritskoye (Lysogorskiy district) 51.34046 44.827667 2013
12 Lake Cherepash'e (floodplain of the Medveditsa river), near the village Uritskoye (Lysogorskiy district) 51.363253 44.818795 2015
13 Kruglenkoe Lake (floodplain of the Medveditsa river), near the village Uritskoye (Lysogorsky district) 51.364733 44.815737 2015
14 Floodplain of the Saratovka river, near the town Pribrezhnyi (Engelsskiy district) 51.508453 46.290438 2019
15 Floodplain of the Volga river, near the village Rovnoe 50.760667 45.928074 2009
16 Floodplain of the Yeruslan river, near the village Dyakovka (Krasno-kutskiy district) 50.720972 46.750479 2010
17 Floodplain of the Bolshoy Irgiz river, near the village Kamenka (Puga-chevskiy district) 51.920464 48.651621 2009
18 Pond, near the village Balashi (Ozinskiy district) 51.370161 49.902464 2017
19 Pond, near the village Safarovka (Dergachevskiy district) 50.905088 48.961417 2017
20 Kharlamov Sad natural boundary, floodplain of the Bolshoy Uzen river (Alexandrovo-Gaiskiy district) 50.289019 48.467987 2017
21 Varfolomeevskoe reservoir, near the village Vetelki (Alexandrovo-Gaiskiy district) 49.948317 48.268323 2021
Volgograd region
22 Valley of the Yeruslan river, near the village Saltovo (Staropoltavskiy district) 50.611634 46.617332 2019
Voronezh region
23 Lake (valley of the river Khoper), near the village Makashevka (Borisoglebskiy district) 51.527738 42.588082 2019
Penza region
24 Sapolga river valley, Malaya village Serdoba (Maloserdobinskiy district) 52.460440 44.961816 2019
Ulyanovsk region
25 Syzransk river valley, near the village Repevka (Novospasskiy district) 53.155901 48.066837 2019
The fire-bellied toad is a common species of riod, it is found in lentic water bodies used for
anuran amphibians in the region, living near the wa- reproduction. The distribution of B. bombina popu-ter's edge. During its spawning and post-spawning pe- lations is generally similar to the previous species;
V. G. Tabachishin, M. V. Yermokhin Table 2. Localities of the revealed populations of Pelobates vespertinus in the Saratov region and adjacent territories
No. Locality Coordinates Year
N E
Saratov region
1 Floodplain of the Khoper river, near the village Letyazhevka (Arkadakskiy district) 51.884099 43.392345 2009
2 Lake Rasskazan', near the village Rasskazan' (Balashovskiy district) 51.548417 42.611079 2019
3 Lake Koblovo (floodplain of the Medveditsa river), near the village Uritskoye (Lysogorskiy district) 51.310816 44.833772 2011
4 Lake Sadok (floodplain of the Medveditsa river), near the village Uritskoye (Lysogorskiy district) 51.359043 44.801349 2013
5 Lake Lebyazhye (floodplain of the Medveditsa river), near the village Uritskoye (Lysogorskiy district) 51.34046 44.827667 2013
6 Lake Cherepash'e (floodplain of the Medveditsa river), near the village Uritskoye (Lysogorskiy district) 51.363253 44.818795 2015
7 Kruglenkoe Lake (floodplain of the Medveditsa river), near the village Uritskoye (Lysogorskiy district) 51.364733 44.815737 2015
8 Liashchevo Lake (floodplain of the Medveditsa river), near the village Uritskoye (Lysogorskiy district) 51.385302 44.866288 2020
9 Pond, near the village near the village Uritskoye (Lysogorskiy district) 51.461065 44.908737 2020
10 Floodplain of the Latryk river, near the village Novoaleksandrovka (Saratovskiy district) 51.500379 45.773678 2020
11 Floodplain of the Zolotukha river, near the village Zolotoye (Krasnoar-meyskiy district) 50.839597 45.918000 2009
12 Pond, near the village Rovnoe 50.822205 46.120236 2009
13 Valley of the Yeruslan river, near the village Dyakovka (Krasnokutsky district) 50.728069 46.761788 2010
14 Floodplain of the Zhidkaia Solianka river, near the village Komsomol-skoye (Krasnokutskiy district) 50.770180 47.001456 2011
15 Pond, near the village Tselinny (Krasnopartizanskiy district) 51.531670 49.120407 2009
16 Floodplain of the Bolshoy Uzen river, near the village Kurilovka (Novo-uzenskiy district) 50.759883 48.099515 2010
17 Valley of the Bolshoy Uzen river, near the village Monakhov (Alexan-drovo-Gaiskiy district) 50.278916 48.510601 2017
18 Valley of the Bolshoy Uzen river near, the village Alexandrov Gai 50.147174 48.524298 2021
Volgograd region
19 Valley of the Yeruslan river, near the village Saltovo (Staropoltavskiy district) 50.611634 46.617332 2019
Voronezh region
20 Lake (valley of the river Khoper), near the village Makashevka (Boriso-glebskiy district) 51.527738 42.588082 2019
Penza region
21 Sapolga river valley, Malaya village Serdoba (Maloserdobinskiy district) 52.460440 44.961816 2019
Ulyanovsk region
22 | Syzransk river valley, near the village Repevka (Novospasskiy district) | 53.155901 | 48.066837 | 2019
however, it uses terrestrial biotopes to a limited extent. During the period of activity, fire-bellied toads rarely move from their reservoir further 10-15 m for feeding (at twilight and at night with high humidity after heavy rainfall). More distant terrestrial biotopes are used by metamorphs and mature individuals during wintering only. The population size of B. bombina in the Med-
veditsa river valley is significantly lower than that of P vespertinus and does not exceed, on average, 10% (0.6-41.5%) of the total numbers of amphibians during their breeding season (Yermokhin et al., 2018).
The Pallas spadefoot toad populations on the territory of the Saratov region and adjacent territories live mainly in areas with light sandy soils, which are
Penza region
S^ f-..24 .A, {C^^UfT ...... ^
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b
Figure. Studied populations of Bombina bombina (a) and Pelobates vespertinus (b) in the Saratov region and adjacent territories; for localities numbers and their coordinates, see Tables 1 and 2
confined to river valleys with a developed floodplain. In this region, the most numerous populations were recorded in the river valleys of the rivers of the Don (Khoper and Medveditsa) and Volga (Bolshoi Irgiz, Eruslan, and Tereshka) basins. Floodplain lakes there have become the main type of spawning water bodies for such populations. In the post-spawning period, spadefoot toads live mainly on sandy ridges and fluvial terraces near spawning lakes, weakly overgrown with herbaceous and shrubby vegetation. In heavily soddy areas, in forest biotopes and in agroceno-ses, the population density is ten times lower than that in the main habitats.
Wintering of Pallas's spadefoot toad in the Saratov region occurs almost exclusively on sandy soils, in areas that rise above the river floodplain and are never subject to flooding during a flood rise in the water level. The depth of the wintering chambers of these amphibians varies in different years, is determined by the degree of soil freezing and ranges from 1 to 2.2 m. The density of individuals during the wintering period is on average 1-2 ind./m2 (Yermokhin et al., 2013 b).
On watersheds, they are found near len-tic water bodies (ponds and water reservoirs) at a distance of no more than 600 m, which is associated with the maximum dispersal distance of P. vespertinus (Yermokhin et al., 2014), and a similar value of the parameter was noted earlier for Pelobates fuscus in Eastern Europe (Blab, 1986) and somewhat smaller in Central and Western Europe (500 m: Hels, 2002; Trochet et al., 2014). In other terrestrial biotopes at a longer distance from spawning water bodies, as well as in areas with heavy soils, the populations of the species are very sparse (single findings were noted or these amphibians were absent).
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Распространение чесночницы Палласа (Pelobates vespertinus (Pallas, 1771)) и жерлянки краснобрюхой (Bombina bombina L., 1761) (Anura, Amphibia) на территории Саратовской области и сопредельных территорий
В. Г. Табачишин ш, М. В. Ермохин 2
1 Саратовский филиал Института проблем экологии и эволюции им. А. Н. Северцова РАН Россия, 410028, г. Саратов, ул. Рабочая, д. 24 2 Саратовский национальный исследовательский государственный университет имени Н. Г. Чернышевского
Россия, 410012, г. Саратов, ул. Астраханская, д. 83
Информация о статье
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https://doi.org/10.18500/1814-6090-2021-21-3-4-138-143
Поступила в редакцию 22.08.2021. после доработки 23.09.2021, принята 28.09.2021
Статья опубликована на условиях лицензии Creative Commons Attribution 4.0 International (CC-BY 4.0)
Аннотация. Приводятся новые данные о географическом распространении чесночницы Палласа и жерлянки краснобрюхой на территории Саратовской и смежных районов Волгоградской, Воронежской, Пензенской и Ульяновской областей. Установлено обитание популяций жерлянки краснобрюхой в 25 локалитетах и чесночницы обыкновенной в 22 локалитетах. Большинство современных популяций этих видов бесхвостых амфибий зарегистрированы вблизи водоемов в долинах рек.
Ключевые слова: бесхвостые амфибии, популяции, новые локалитеты
Образец для цитирования: Tabachishin V. G., Yermokhin M. V. New data on the distribution of Pallas's spadefoot toad (Pelobates vespertinus (Pallas, 1771)) and fire-bellied toad (Bombina bombina L., 1761) (Anura, Amphibia) on the territory of the Saratov region and adjacent territories [Табачишин В. Г., Ермохин М. В. Распространение чесночницы Палласа (Pelobates vespertinus (Pallas, 1771)) и жерлянки краснобрюхой (Bombina bombina L., 1761) (Anura, Amphibia) на территории Саратовской области и сопредельных территорий]. Современная герпетология. 2021. Т. 21, вып. 3/4. С. 138 - 143. https://doi.org/ 10.18500/1814-6090-2021-21-3-4-138-143
н Для корреспонденции. Саратовский филиал Института проблем экологии и эволюции им. А. Н. Северцова РАН.
ORCID и e-mail адреса: Табачишин Василий Григорьевич: https://orcid.org/0000-0002-9001-1488, tabachishinvg@sevin.ru; Ермохин Михаил Валентинович: https://orcid.org/0000-0001-6377-6816, yermokhinmv@yandex.ru.
