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2. Past and present distribution of the cryptic species Leptidea sinapis and L. reali (Lepidoptera: Pieridae) in Poland and its implications for the conservation of these butterflies
- Creator:
- Konrad Sachanowicz, Wower, Agnieszka, and Jarosław Buszko
- Type:
- article, články, model:article, and TEXT
- Subject:
- Zoologie, entomologie, Evropa střední, Europe, Central, Leptidea, distribution, range changes, expansion, habitat preferences, conservation status, 2, and 59
- Language:
- English
- Description:
- Using a large sample of museum and newly collected specimens of the cryptic butterfly species Leptidea sinapis and L. reali, identified/confirmed based on genital characters, the patterns in their geographical distributions, historical changes in range and briefly also their habitat associations in Poland, were investigated. Leptidea sinapis occurs mainly in the lowland and upland parts of the country and is rarer than L. reali, which is widespread throughout Poland, including the mountains. In the first half of the 20th century, the range of L. sinapis included the whole of Poland, whereas currently it is confined to eastern and southern regions. Historical records of the distribution of L. reali are concentrated in southern and central Poland. Currently it is recorded from localities throughout Poland. Leptidea reali is recorded most frequently in meadows and shows no clear preference for a particular level of humidity, while L. sinapis is found mainly in woodland and xerothermic habitats. The two species are syntopic within the present range of L. sinapis, which is now a declining and local species, whereas L. reali is now common and widespread. and Konrad Sachanowicz, Agnieszka Wower, Jaroslaw Buszko.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
3. Range extension and conservation status of the bitterling, Rhodeus sericeus amarus in Russia and adjacent countries
- Creator:
- Kozhara, Alexander V., Zhulidov, Alexander V., Gollasch, Stephan, Przybylski, Mirosław, Poznyak, Vladimir G., Zhulidov, Daniel A., and Gurtovaya Yu., Tatyana
- Type:
- article and TEXT
- Subject:
- bitterling occurence, abundance, expansion, conservation, and invasion species
- Language:
- English
- Description:
- The distribution and abundance of the bitterling, a small ostracophilous cyprinid species, is reanalysed on the basis of our records and a review of the recent literature. This fish, recognised as endangered or vulnerable in many European countries, shows a rapid expansion beyond its native geographical range within the limits of the former Soviet Union. In the last decades it has invaded the lower Volga, Kuban and Aras River basins and has recently started to colonise the upper Volga and upper Ural River tributaries. From the early 1980s the number of water bodies and sampling sites where the bitterling is recorded, increases steadily over the entire area examined. At the same time, bitterlings increased in abundance and became a basic species in fish assemblages of diverse water bodies including rivers (both lower and upper reaches), ponds, canals and estuaries. The spread of bitterling outside its historical range results from man-made connections of contiguous waterway systems, from unintentional introductions by aquarists or, more likely, by anglers using bitterlings as bait fish. Independent and synchronous bitterling invasions to geographically distant basins indicate that some global or macroregional factors facilitate its expansion.
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/