Results 41 to 50 of about 2,994 (148)

Impacts of signal crayfish on stream fishes [PDF]

open access: yes, 2013
Invasive species cause biodiversity and economic loss globally. Invasive crayfish have a wide range of effects as a result of their high densities and biomass, feeding at multiple trophic levels, aggressive competition for shelter and ecosystem ...
FINDLAY, JOHN,DAVID,STUART
core  

Interactive effects between burrowing crayfish and flow conditions increase riverbank erosion: A flume experiment

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 5, May 2026.
Biological and geomorphic effects have been treated independently in fluvial geomorphology. Flume experiments with burrowing crayfish show that interactions between these drivers do more geomorphic work than the sum of their maximum independent parts combined, meaning total biogeomorphic effects to rivers are likely underestimated.
Catherine H. Sanders   +2 more
wiley   +1 more source

Spatial ecology of white-clawed crayfish Austropotamobius pallipes and signal crayfish Pacifastacus leniusculus in upland rivers, Northern England [PDF]

open access: yes, 2004
The American signal crayfish Pacifastacus lernusculus, an invasive species widely introduced throughout Europe, is a major threat to native European crayfish species and is causing increasing concern because of its wide impact on aquatic ecosystems. This
Bubb, Damian H, Bubb, Damian H.
core  

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

First Record of Microsporidia Infection in the Damselfly Ischnura elegans Larvae: Temperature and Predator Cue Effects on the Host’s Life History

open access: yesDiversity, 2022
Here, we report, for the first time, a microsporidian infection in laboratory-reared larvae of the damselfly Ischnura elegans. Infected larvae originated from field-collected adult females, which were caught in southern Poland in August 2020 (the second ...
Andrzej Antoł   +3 more
doaj   +1 more source

Signatures of Wild Animal Life in Earth's Landscapes

open access: yesJournal of Geophysical Research: Earth Surface, Volume 131, Issue 4, April 2026.
Abstract Animals shape Earth surface processes and landforms by displacing Earth surface materials and by making them more or less susceptible to geophysical processes. Despite increased recognition of the global significance of animal landscape “signatures”, analysis of their magnitude and generality has not been possible until now.
Z. Khan   +7 more
wiley   +1 more source

First detection of Aphanomyces astaci and its potential responsibility for mass mortalities of Pontastacus (Astacus) leptodactylus in Greek lakes

open access: yesJournal of Biological Research - Thessaloniki
Aphanomyces astaci is a pathogen categorized among the 100 worst invasive alien species, responsible for the crayfish plague disease. In the past, many disease outbreaks devastated native European crayfish populations.
Maria V Alvanou   +5 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  

EXTENSION D’UNE ESPÈCE ENVAHISSANTE : SUIVI DE LA POPULATION D’ÉCREVISSES SIGNAL (PACIFASTACUS LENIUSCULUS DANA) AU LÉMAN À L’OUEST DE THONON-LES-BAINS, ENTRE 2001 ET 2005 – IMPACT DE LA PÊCHE

open access: yesKnowledge and Management of Aquatic Ecosystems, 2006
La population d’écrevisses signal arrivées en 1976 dans le Léman continue son expansion le long de la zone littorale à l’ouest de Thonon-les-Bains. En 2001, la population s’étendait jusqu’à Séchex avec une forte densité (82 indiv./nasse) de Thonon à ...
DUBOIS J.-P., GILLET C., MICHOUD M.
doaj   +1 more source

Molecular Characterisation of Endangered White‐Clawed Crayfish Populations in Southern Switzerland

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 3, March 2026.
ABSTRACT This study investigates the phylogeography of the endangered European White‐Clawed Crayfish (WCC) Austropotamobius pallipes species complex in the main tributaries of the Po River basin in southern Switzerland and northern Italy, a diversity hotspot for this species.
Sebastian Prati   +3 more
wiley   +1 more source

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