ARPHA Conference Abstracts : Conference Abstract
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Corresponding author: Kirill Makarov (kvmac@inbox.ru), Yurii Sundukov (sundukov@mail.ru), Andrey Matalin (andrei-matalin@yandex.ru)
Received: 24 Jul 2019 | Published: 29 Jul 2019
© 2019 Kirill Makarov, Yurii Sundukov, Andrey Matalin
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Makarov K, Sundukov Y, Matalin A (2019) Ground beetles (Coleoptera, Carabidae) of Kunashir Island’s fumarole fields, Kuril Archipelago. ARPHA Conference Abstracts 2: e38521. https://doi.org/10.3897/aca.2.e38521
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Fumarole fields on the Kunashir Island are confined to the main mountain ranges formed by the Ruruy, Mendeleev and Golovnin volcanoes. Due to residual volcanism, their soil, water and air are enriched with sulfur compounds, the vegetation is strongly depressed and degraded, while the temperature of soil and subsoil air is markedly increased (
Based on repeated collections in 2008 to 2018, a complex of ground beetles living in these particular conditions was revealed and studied.
Among the approximately 170 species of ground beetles recorded from the Kunashir Island (
The species that populate both fumarole fields and other habitats react differently to particular conditions. In C. sachalinensis and P. samurai, the proportions of melanistic specimens at the fumaroles are increased, in the latter species the body size being significantly increased as well. The most interesting is the variability of B. dolorosum. With an increase in temperature and acidity of the habitat, this species becomes increasingly small, elongated, flattened and partially unpigmented. Such individuals are phenotypically indistinguishable from Bembidion (Ocydromus) negrei Habu, 1958 (= B. kuznetsovi Lafer, 2002), with transitions from the typical B. dolorosum to a form imitating B. negrei which can be observed even in tens of meters apart.
Thus, only a few species have been capable of getting adapted to fumarolic field environments, but even they change significantly under the influence of extreme factors. At the same time, we believe that thermal (including fumarole) fields could have ensured the survival of a number of species under the conditions of temperature pessima during the Pleistocene and Holocene. Such a scenario was considered by us earlier for Bembidion (? Nipponobembidion) ruruy Makarov et Sundukov, 2014 (
fumarole fields, volcanoes, Kunashir Island, Kuril Archipelago, Carabidae
Andrey Matalin