Results 11 to 20 of about 4,472 (223)

Cryptic asymmetry: unreliable signals mask asymmetric performance of crayfish weapons [PDF]

open access: bronzeBiology Letters, 2012
Animals commonly use their limbs as signals and weapons during territorial aggression. Asymmetries of limb performance that do not relate to asymmetries of limb size (cryptic asymmetry) could substantially affect disputes, but this phenomenon has not been considered beyond primates.
Michael J. Angilletta, Robbie S. Wilson
openalex   +4 more sources

Introduced alien signal crayfish (Pacifastacus leniusculus) in Finland − uncontrollable expansion despite numerous crayfisheries strategies [PDF]

open access: diamondKnowledge and Management of Aquatic Ecosystems, 2018
In Finland, massive signal crayfish introductions started towards the end of 1980s, with an estimated total of 2.2 million signal crayfish been stocked before year 2016.
Ruokonen Timo J.   +6 more
doaj   +2 more sources

Daily activity rhythms, chronotypes, and risk-taking behavior in the signal crayfish. [PDF]

open access: yesCurr Zool, 2022
Abstract Consistent inter-individual differences in daily activity rhythms (i.e., chronotypes) can have ecological consequences in determining access to food resources and avoidance of predators. The most common measure to characterize chronotypes in animals as well as humans is the onset of activity (i.e., early or late chronotypes).
Sbragaglia V, Breithaupt T.
europepmc   +6 more sources

Integrated Biomarker Response in Signal Crayfish Pacifastacus Leniusculus Exposed to Diphenhydramine

open access: greenSSRN Electronic Journal, 2022
Diphenhydramine (DPH) is a pharmaceutical with multiple modes of action, primarily designed as an antihistamine therapeutic drug. Among antihistamines, DPH is a significant contaminant in the environment, frequently detected in surface waters, sediments, and tissues of aquatic biota.
Nguyen Van Tuyen   +5 more
openalex   +3 more sources

Prevalence of the crayfish plague pathogen Aphanomyces astaci in populations of the signal crayfish Pacifastacus leniusculus in France: evaluating the threat to native crayfish.

open access: yesPLoS ONE, 2013
Aphanomyces astaci, the crayfish plague pathogen, first appeared in Europe in the mid-19(th) century and is still responsible for mass mortalities of native European crayfish.
Lenka Filipová   +4 more
doaj   +4 more sources

Better Alone Than in Bad Company: Trophic Ecology of Co‐Occurring Invasive and Native Crayfish [PDF]

open access: yesEcology and Evolution
The North American signal crayfish, Pacifastacus leniusculus, is one of the most successful invasive crayfish species in Europe. Its broad trophic niche and ability to exploit various food sources across different trophic levels, coupled with the spread ...
Daniela Ghia   +8 more
doaj   +2 more sources

Comparing the effects of introduced signal crayfish and native noble crayfish on the littoral invertebrate assemblages of boreal lakes [PDF]

open access: greenFreshwater Science, 2015
AbstractThe introduced North American signal crayfish Pacifastacus leniusculus (Dana) has replaced the native noble crayfish (Astacus astacus) in many European freshwaters and can be considered a new component of these ecosystems. The 2 species are apparently similar in many respects, but their ecological equivalence is uncertain and has been little ...
Fabio Ercoli   +4 more
openalex   +6 more sources

Impacts of the North American signal crayfish (Pacifastacus leniusculus) on European ecosystems. [PDF]

open access: yesEnviron Sci Eur, 2015
As a vector of the crayfish plague (Aphanomyces astaci), invasive crayfish pose a major threat to endemic crayfish species in Europe. But do they affect whole ecosystems and fish species as well? A comprehensive review was done using online search engines on current literature to elucidate possible crayfish effects.
Vaeßen S, Hollert H.
europepmc   +5 more sources

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