Results 1 to 10 of about 4,472 (223)

Virome Analysis of Signal Crayfish (Pacifastacus leniusculus) along Its Invasion Range Reveals Diverse and Divergent RNA Viruses [PDF]

open access: goldViruses, 2021
Crayfish are a keystone species of freshwater ecosystems and a successful invasive species. However, their pathogens, including viruses, remain understudied.
Katarina Bačnik   +4 more
doaj   +4 more sources

Invasive signal crayfish and native noble crayfish show trophic niche shrinkage in sympatry [PDF]

open access: goldNeoBiota
Studying the coexistence of native species and invasive species with similar functional traits, habitat usage, and feeding habits is crucial for understanding the dynamics of invasion and ecological changes in the invaded ecosystem.
Fabio Ercoli   +5 more
doaj   +5 more sources

The impact of signal crayfish (Pacifastacus leniusculus) on the recruitment of salmonid fish in a headwater stream in Yorkshire, England [PDF]

open access: diamondKnowledge and Management of Aquatic Ecosystems, 2009
Signal crayfish (Pacifastacus leniusculus) have become increasingly widespread in rivers in Great Britain since their introduction in the late 1970s, causing extensive losses of indigenous white-clawed crayfish and negative impacts on communities of ...
S. Peay   +4 more
doaj   +10 more sources

The signal crayfish is vulnerable to both the As and the PsI-isolates of the crayfish plague [PDF]

open access: diamondKnowledge and Management of Aquatic Ecosystems, 2014
The carrier status and possible elevated tolerance of the signal crayfish (Pacifastacus leniusculus) against the crayfish plague disease agent (Aphanomyces astaci) has been speculated for several decades.
Aydin H.   +5 more
doaj   +4 more sources

Diet and trophic niche of the invasive signal crayfish in the first invaded Italian stream ecosystem [PDF]

open access: goldScientific Reports, 2021
The occurrence of the signal crayfish Pacifastacus leniusculus in the Valla Stream was the first established population of this invasive species recorded in an Italian stream ecosystem.
Fabio Ercoli   +5 more
doaj   +4 more sources

THE EFFECT OF THE LARGE-SCALE INTRODUCTION OF SIGNAL CRAYFISH ON THE SPREAD OF CRAYFISH PLAGUE IN SWEDEN [PDF]

open access: bronzeKnowledge and Management of Aquatic Ecosystems, 2006
Since 1907, coinciding with the arrival of the crayfish plague, the noble crayfish (Astacus astacus) has steadily declined in Sweden. To substitute the noble crayfish fishery lost, mainly due to the plague, and since the species is highly susceptible to ...
BOHMAN P., NORDWALL F., EDSMAN L.
doaj   +3 more sources

Color variation in signal crayfish Pacifastacus leniusculus. [PDF]

open access: yesCurr Zool, 2021
Abstract External coloration in animals depends on the interaction of several different factors including the genetics and epigenetics processes that underlie the color expression, the mechanisms of color perception, and the general mechanisms controlling color evolution and function.
Sacchi R   +4 more
europepmc   +5 more sources

Crayfish plague affects juvenile survival and adult behaviour of invasive signal crayfish. [PDF]

open access: yesParasitology, 2020
AbstractThe spread of invasive, non-native species is a key threat to biodiversity. Parasites can play a significant role by influencing their invasive host's survival or behaviour, which can subsequently alter invasion dynamics. The North American signal crayfish (Pacifastacus leniusculus) is a known carrier ofAphanomyces astaci, an oomycete pathogen ...
Thomas JR   +7 more
europepmc   +7 more sources

Simultaneous detection of invasive signal crayfish, endangered white-clawed crayfish and the crayfish plague pathogen using environmental DNA [PDF]

open access: greenBiological Conservation, 2018
ABSTRACTAquatic Invasive Species (AIS) are important vectors for the introduction of novel pathogens which can, in turn, become drivers of rapid ecological and evolutionary change, compromising the persistence of native species. Conservation strategies rely on accurate information regarding presence and distribution of AIS and their associated ...
Chloe V. Robinson   +4 more
openalex   +4 more sources

Environmental DNA‐based methods detect the invasion front of an advancing signal crayfish population [PDF]

open access: goldEnvironmental DNA, 2022
Aquatic invasive species, such as the signal crayfish (Pacifastacus leniusculus), present a major threat to freshwater ecosystems. However, these species can be challenging to detect in recently invaded habitats.
Jack A. Greenhalgh   +9 more
doaj   +2 more sources

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