Results 51 to 60 of about 4,202 (207)

River Connectivity in Dammed Areas Studied Through Environmental DNA Metabarcoding at Community and Species Levels

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT The field of environmental DNA (eDNA) is rapidly expanding with established applications in biodiversity monitoring, rare species detection and ecological assessment. However, its potential to evaluate species connectivity in fragmented aquatic systems remains underexplored.
Sara Fernández   +2 more
wiley   +1 more source

NATIVE AND ALIEN DECAPODA SPECIES IN HUNGARY:DISTRIBUTION, STATUS, CONSERVATION IMPORTANCE

open access: yesKnowledge and Management of Aquatic Ecosystems, 2005
Three native (Astacus astacus, Astacus leptodactylus, Austropotamobius torrentium) and three alien (Orconectes limosus, Pacifastacus leniusculus, Eriocheir sinensis) Decapoda species have been found in Hungary so far. A.
PUKY M., REYNOLDS J. D., SCHÁD P.
doaj   +1 more source

The home range of the signal crayfish in a British lowland river [PDF]

open access: yes, 1997
The signal crayfish Pacifastacus leniusculus (Dana), a native of north-western North America, is now a common resident in some British fresh waters following its introduction to England in 1976 (Lowery & Holdich 1988).
Guan, Rui-Zhang, Wiles, Peter
core  

Impact of the Highly Invasive Signal Crayfish (Pacifastacus leniusculus) on Freshwater Macroinvertebrate Communities

open access: yesFreshwater Biology, Volume 71, Issue 2, February 2026.
ABSTRACT Invasive non‐native species threaten freshwater ecosystems, disrupting the functioning and structure of the food chain and potentially leading to biodiversity loss. As omnivores, crayfish can modify their environment, directly affecting organisms such as macroinvertebrates.
António Barbosa Nogueira   +5 more
wiley   +1 more source

Genetička raznolikost invazivne strane vrste Pacifastacus leniusculus u Hrvatskoj [PDF]

open access: yes, 2017
Signalni rak (Pacifastacus leniusculus) je vrsta autohtona za područje Sjeverne Amerike. Introduciran je na područje Europe i Japana gdje se ubrzo proširio kao invazivna vrsta. U Hrvatskoj je rasprostranjen u rijekama Muri i Dravi u koje se nizvodno proširio iz Slovenije te u rijeci Korani u koju je nedavno ilegalno unesen.
Mijošek Pavin, Tatjana   +2 more
openaire   +2 more sources

ON SELECTED MORPHOMECHANICAL CHARACTERISTICS OF SIGNAL CRAYFISH (PACIFASTACUS LENIUSCULUS DANA) EGGS DURING INCUBATION

open access: yesKnowledge and Management of Aquatic Ecosystems, 2004
Changes in resistance to mechanical pressure during embryogenesis were studied in the signal crayfish (Pacifastacus leniusculus Dana). A constant increase in egg size (volume and surface area) was observed to take place throughout the embryonic ...
WINNICKI A.   +3 more
doaj   +1 more source

Predatory impacts of alien decapod Crustacea are predicted by functional responses and explained by differences in metabolic rate

open access: yes, 2018
Alien predators can have large impacts on prey. It is important that we understand, and ideally predict, these impacts. Here, we compare predatory impacts of size-matched decapod crustaceans—invasive alien Eriocheir sinensis and Pacifastacus leniusculus,
Dunn, AM, Taylor, NG
core   +1 more source

Unraveling multipredator impacts in salmon‐bearing rivers using quantitative DNA metabarcoding

open access: yesEcological Applications, Volume 35, Issue 8, December 2025.
Abstract Ecological impacts of invasive species are mounting as their numbers and geographic extent continue to increase. Across extensive parts of their range, Pacific salmon (Oncorhynchus spp.) smolts face an expanding gauntlet of nonnative predators during their seaward migration.
John J. Winkowski   +2 more
wiley   +1 more source

Escape rooms: behavioural response of two invasive crayfish species under water decline scenarios

open access: yesJournal of Limnology
Climate change and invasive alien species pose a significant threat to biodiversity and the survival of native species. This study considered the impact of drought conditions on the escape behaviour through terrestrial dispersal ability of two invasive ...
Daniela Ghia   +3 more
doaj   +1 more source

Lectins and cytokines in celomatic invertebrates: two tales with the same end [PDF]

open access: yesInvertebrate Survival Journal, 2010
The paper presents the principle data regarding the presence and the roles of lectins and cytokines in invertebrates. The former have been described in the main invertebrate taxa, such molluscs, annelids, arthropods, echinoderms and tunicates, while ...
D Malagoli, E Ottaviani, S Sacchi
doaj  

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