scholarly journals THE STONE CRAYFISH AUSTROPOTAMOBIUS TORRENTIUM (SCHRANK) IN THE CZECH REPUBLIC

2002 ◽  
pp. 707-713
Author(s):  
P. KOZAK ◽  
Z. DURIS ◽  
T. POLICAR
Keyword(s):  
Czech Republic ◽  
Native Species ◽  
Military Training ◽  
Astacus Leptodactylus ◽  
Terrestrial Environment ◽  
The Czech Republic ◽  
Orconectes Limosus ◽  
Terrestrial Environments ◽  
Austropotamobius Torrentium ◽  
Stone Crayfish

Five species of crayfish, comprising two native species Austropotamobius torrentium and Astacus astacus, one introduced European species, Astacus leptodactylus and two alien American species, Orconectes limosus and Pacifastacus leniusculus, occur in open waters of the Czech Republic. The stone crayfish is highly endangered species in the country, known only from several recent records. Four localities have been confirmed for the presence of the stone crayfish in the Czech Republic. Basic characteristics of the following stone crayfish occurring localities are described: Míza and Upořský brook in Křivoklát protected area, Zubřina brook near Domažlice, Luční brook near Trutnov and Klabava brook in Brdy Military Training Area. The present localities have been investigated for chemical, structural and terrestrial environments. Properties of these waters (morphology, supply of substrate, current, aquatic and terrestrial environment) are compared with literature data. Strong conservation actions are necessary to save the endangered stone crayfish on most north-eastern limit of its distribution.

Frequency of new marble-colored morph in wild population of Austropotamobius torrentium (Decapoda: Astacidae)

Biologia ◽  
2013 ◽  
Vol 68 (4) ◽  
Author(s):  
Jiří Patoka ◽  
Kateřina Římalová-Kadlecová ◽  
Michal Bílý ◽  
Ján Koščo
Keyword(s):  
Czech Republic ◽  
Central Europe ◽  
Wild Population ◽  
Frequency Of Occurrence ◽  
The Czech Republic ◽  
Color Morphs ◽  
Crayfish Population ◽  
Austropotamobius Torrentium ◽  
Stone Crayfish ◽  
Crayfish Species

AbstractIn contrast with the usual coloration of stone crayfish (Austropotamobius torrentium), we newly discovered a rare marble morph in a brook in the Czech Republic (Central Europe). During mark-recapture sessions, we captured by hand 1,103 individuals over the 3 years 2008–2010 from which only 5 were marble-colored. This color morph’s frequency of occurrence was thus less than 1% within the estimated subadult and adult stone crayfish population. Although many biological papers and determination keys regarding crayfish are based upon analysis of exoskeletal coloration, recent studies have asserted that this characteristic provides unreliable guidance when determining species inasmuch as it easily results in errors because many crayfish species exhibit an extensive variety of color morphs.

scholarly journals Restoring a butterfly hot spot by large ungulates refaunation: The case of the Milovice military training range, Czech Republic

2020 ◽  
Author(s):  
Martin Konvicka ◽  
David Ričl ◽  
Veronika Vodičková ◽  
Jiří Beneš ◽  
Miloslav Jirků
Keyword(s):  
Czech Republic ◽  
Hot Spot ◽  
Military Training ◽  
Butterfly Species ◽  
The Czech Republic ◽  
Mobile Species ◽  
Wild Horse ◽  
Successional Change ◽  
Successional Stages ◽  
Cost Efficient

Abstract Background: Refaunation by large ungulates represents a cost-efficient approach to managing natural biotopes. We studied butterflies inhabiting grasslands of the former Milovice military training range in the Czech Republic, grazed since 2015 by a combination of Exmoor pony (“wild” horse), Tauros cattle (“aurochs”) and European wisent. Methods: We compared presence-absence patterns from two surveys preceding the refaunation, one immediately after military use termination (early 1990s), the other prior to the refaunation (2009), with the current (2016–19) results of monitoring 8 grazed and 8 ungrazed plots. We analysed the life history, climatic and conservation-related traits of recorded butterflies to gain insights into the ungulates’ impacts. Results: Following the termination of military use, several poorly mobile species displaying broad oceanity niches were lost. Newly gained species are more mobile and prefer warmer continental conditions. Currently, numbers of butterfly species do not differ between refaunated and neglected plots, but the former hosted higher abundances. Butterflies developing on coarse grasses and shrubs inclined towards neglected plots, whereas refaunated plots supported species developing on small forbs. Conclusion: The changes in species composition following the cessation of military use are attributable to successional change, coupled with climate-driven expansion of thermophilous and mobile species. By blocking succession, large ungulates support butterflies depending on competitively poor plants. Preserving butterflies of late-successional stages is ensured by the diverse setting of the reserves and by the relatively low ungulate densities.

scholarly journals Hitchhiking Exotic Clam: Dreissena polymorpha (Pallas, 1771) Transported via the Ornamental Plant Trade

Diversity ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 410
Author(s):  
Jiří Patoka ◽  
Barbora Patoková
Keyword(s):  
Czech Republic ◽  
Zebra Mussel ◽  
Dreissena Polymorpha ◽  
Native Species ◽  
Ornamental Plant ◽  
Decision Makers ◽  
The Czech Republic ◽  
Tropical Regions ◽  
Invasive Mussel ◽  
Ornamental Species

Ornamental aquaculture is one of the main sources of non-native species worldwide. Unintentionally transported “hitchhiking” organisms have been previously recorded; although most of these species are transported from tropical regions, here we report on the first accidental transport of the zebra mussel (Dreissena polymorpha) in a shipment of ornamental Aegagropila linnaei (Chlorophyta) from Russia to the Czech Republic. This invasive mussel is listed on the national blacklist of alien species in the Czech Republic and can be easily released in outdoor garden ponds together with A. linnaei. Since the Czech Republic is known to be a gateway for aquatic ornamental species from a European perspective, re-export to other European countries is also possible. Thus, the spread of D. polymorpha via this pathway cannot be excluded. This finding should be of importance to conservationists, traders, decision-makers and other stakeholders.

FIRST RECORDS OF AZALEA SAWFLY NEMATUS LIPOVSKY SMITH, 1974 (HYMENOPTERA: TENTHREDINIDAE) IN LATVIA

2021 ◽  
Author(s):  
Inga Apine ◽  
Uģis Piterāns
Keyword(s):  
Climate Change ◽  
Czech Republic ◽  
Alien Species ◽  
Native Species ◽  
Host Plants ◽  
Field Observations ◽  
The Czech Republic ◽  
Sawfly Larvae ◽  
The Usa ◽  
First Time

Invasive non-native insect species are well-known threat to both local and introduced plant species in Europe. With increasing global trade and effects of climate change it is expected these alien species will continue to expand their distribution areas. One such non-native species is azalea sawfly Nematus lipovskyi Smith, 1974 (Hymenoptera: Tenthredinidae) that feeds on deciduous Rhododendron spp. This species is known to occur in the USA and was found in the Czech Republic for the first time in Europe in 2010. We report the first findings of this species in Latvia that were made based of field observations in the period of 2018-2020. The current known status of the species in Latvia is presented. Our observations of damage caused by sawfly larvae are summarized. Host plants used by sawfly larvae are listed – we note Rhododendron albrechtii as a host plant of this species for the first time. The possible pathways of its introduction and the overall importance of our findings in context with other non-native species expansions are briefly discussed.

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