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1.
Biol Rev Camb Philos Soc ; 92(1): 572-607, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26727244

RESUMO

Freshwater mussels of the Order Unionida provide important ecosystem functions and services, yet many of their populations are in decline. We comprehensively review the status of the 16 currently recognized species in Europe, collating for the first time their life-history traits, distribution, conservation status, habitat preferences, and main threats in order to suggest future management actions. In northern, central, and eastern Europe, a relatively homogeneous species composition is found in most basins. In southern Europe, despite the lower species richness, spatially restricted species make these basins a high conservation priority. Information on freshwater mussels in Europe is unevenly distributed with considerable differences in data quality and quantity among countries and species. To make conservation more effective in the future, we suggest greater international cooperation using standardized protocols and methods to monitor and manage European freshwater mussel diversity. Such an approach will not only help conserve this vulnerable group but also, through the protection of these important organisms, will offer wider benefits to freshwater ecosystems.


Assuntos
Bivalves/fisiologia , Conservação dos Recursos Naturais , Ecossistema , Distribuição Animal , Animais , Conservação dos Recursos Naturais/tendências , Europa (Continente) , Água Doce
2.
Zootaxa ; 4277(4): 561-572, 2017 Jun 20.
Artigo em Inglês | MEDLINE | ID: mdl-30308631

RESUMO

This synoptic paper gives descriptions of the hitherto unknown or poorly known larvae of Helicopsyche megalochari Malicky 1974 and H. revelieri McLachlan 1884 (Trichoptera: Helicopsychidae). We present information on the morphology of the larvae and illustrate the most important diagnostic features. This information is used for the construction of a comprehensive larval key to the five European species of family Helicopsychidae. In the context of this key, larvae can be easily diagnosed by setation patterns of the dorsal head capsule, submentum shape, and propleuron morphology. With respect to distribution, Helicopsyche megalochari has been reported from the Greek Islands of Andros, Euboea, Ikaria, and Naxos whereas H. revelieri is known from the islands of Capraia, Corsica, and Sardinia. In addition, ecological characteristics and distributions of the European species are briefly discussed.


Assuntos
Ecologia , Insetos , Animais , França , Cabeça , Itália , Larva
3.
Limnologica ; 38(1): 34-42, 2008 Feb 11.
Artigo em Inglês | MEDLINE | ID: mdl-26997681

RESUMO

At three alpine locations in Switzerland adults of Drusus melanchaetes and unknown Drusinae larvae which could not be identified with existing keys were sampled. Based on DNA association with adults, we identified the unknown larvae as D. melanchaetes. To further support the association of specimens a phylogeny was estimated with the putative closest relatives of D. melanchaetes - D. monticola and D. nigrescens - and five other species of Drusus (D. chrysotus, destitutus, discolor, muelleri and romanicus). A highly supported monophyletic clade groups unknown larvae and D. melanchaetes specimens from the central Alps and Austria (Vorarlberg), confirming the association. Based on morphology, larvae of Drusus melanchaetes key out together with D. destitutus in existing keys. D. melanchaetes is separated from the latter species by the shape of the lateral head profile which is almost straight and shows a small step at the height of the antenna, whereas in D. destitutus the lateral head profile is evenly rounded. In addition, in frontal view, the shape of the lateral head outline is straight in D. melanchaetes and rounded in D. destititus. There are also differences in the shape of the pronotum and in the number of the posterodorsal setae at the eighth abdominal dorsum.

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