Results 11 to 20 of about 230 (160)
Differences in growth within and across the reproductive forms of northern crayfish (Faxonius virilis). [PDF]
Ecol Evol, 2023 Complex life histories are frequently associated with biological trade‐offs, as the use of one trait can decrease the performance of a second trait due to the need to balance competing demands to maximize fitness. Here, we examine growth patterns that are indicative of a potential trade‐off between energy allocation for body size versus chelae size ...
Cabrera D, Griffen BD.
europepmc +2 more sources
Otterly delicious: Spatiotemporal variation in the diet of a recovering population of Eurasian otters (Lutra lutra) revealed through DNA metabarcoding and morphological analysis of prey remains. [PDF]
Ecol Evol, 2023 Our national scale investigation of the trophic ecology of a recovering apex predator over a decade using molecular tools highlights that prey distributions are likely to drive such species recoveries. We show that the trophic interactions of otters vary over spatial, temporal, and biological gradients and that their trophic generalism has likely been ...
Drake LE +5 more
europepmc +2 more sources
Better Alone Than in Bad Company: Trophic Ecology of Co-Occurring Invasive and Native Crayfish. [PDF]
Ecol EvolThis study investigated and compared trophic interactions between invasive signal crayfish and native white‐clawed crayfish at sites of co‐occurrence and in allopatry. The presence of crayfish plague, body condition, and trophic niche traits were explored as possible factors that make invasive signal crayfish a strong competitor, enhancing its ...
Ghia D +8 more
europepmc +2 more sources
DNA barcoding is currently unreliable for species identification in most crayfishes. [PDF]
Ecol EvolIn this paper, we assembled publicly available mitochondrial DNA (COI gene) sequence data from NCBI's nucleotide database and subsequently compared outcomes from analyses of two different types of COI dataset: one composed only of unique haplotypes for each species, and another that included redundant haplotypes.
Allison PF +3 more
europepmc +2 more sources
Niche dynamics along two centuries of multiple crayfish invasions
Journal of Animal Ecology, Volume 92, Issue 11, Page 2138-2150, November 2023., 2023 A historical ecology approach unveiled how the realised niche of a European crayfish species changed since 1850. In response to the introduction of two North American crayfish species, along with a lethal pathogen, its niche shrank and shifted towards more abrupt, headwater environments where the overseas invaders have not arrived.
Duarte S. Viana +4 more
wiley +1 more source
Morphometric characteristics and condition indices of stone crayfish Austropotamobius torrentium (Shrank, 1803) from the Mlinska River [PDF]
Agroznanje, 2022 Regarded as a protected species on the IUCN list of endangered species, and classified as data deficient species, the stone crayfish (Austropotamobius torrentium) is one of the five European species from the Astacidae family that lives in freshwater ...
Roljić Rajko +4 more
doaj +1 more source
EFSA Journal, Volume 21, Issue 6, June 2023., 2023 Abstract Infectious pancreatic necrosis (IPN) was assessed according to the criteria of the Animal Health Law (AHL), in particular, the criteria of Article 7 on disease profile and impacts, Article 5 on its eligibility to be listed, Annex IV for its categorisation according to disease prevention and control rules as in Article 9, and Article 8 for ...
EFSA Panel on Animal Health and Welfare (AHAW) +29 more
wiley +1 more source
A contribution on the morphometrics of the thick-clawed crayfish Pontastacus pachypus (Rathke, 1837) (Decapoda, Astacoidea, Astacidae) [PDF]
Zoosystematics and Evolution, 2023 The thick–clawed crayfish Pontastacus pachypus (Rathke, 1837) is an endangered, and the least known, crayfish species in Europe. Currently, detailed information regarding the morphology, ecology and reproduction of thick–clawed crayfish is outdated. This
Aiman Imentai +4 more
doaj +3 more sources
Natural History Sciences, 2023 Based on available literature, the white-clawed crayfish Austropotamobius pallipes complex, a species of Community interest according to the EU Habitats Directive, has not been reported in the Lombard Park of the Ticino Valley (Northern Italy) since ...
Milo Manica, Lorenzo Laddaga
doaj +1 more source
Suitability of Natura 2000 sites for threatened freshwater species under projected climate change
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 32, Issue 12, Page 1872-1887, December 2022., 2022 Abstract As part of the world's largest coordinated network of protected areas, Natura 2000, European Union member states designate special areas of conservation (SACs) to maintain or achieve favourable conservation status for imperilled aquatic species listed under Annex II of the Habitats Directive.
Timo Basen +4 more
wiley +1 more source