Results 31 to 40 of about 15,154 (219)

Exponential increase of signal crayfish in running waters in Sweden – due to illegal introductions?

open access: yesKnowledge and Management of Aquatic Ecosystems, 2011
Sweden has only one indigenous species of crayfish, the noble crayfish (Astacus astacus, Fabricius). There has been a steady decline of noble crayfish populations in Sweden since 1907, mainly due to the crayfish plague.
Bohman P.   +3 more
doaj   +1 more source

Survival, Growth, and Reproduction: Comparison of Marbled Crayfish with Four Prominent Crayfish Invaders

open access: yesBiology, 2021
Biological invasions are increasingly recognized ecological and economic threats to biodiversity and are projected to increase in the future. Introduced freshwater crayfish in particular are protruding invaders, exerting tremendous impacts on native ...
Antonín Kouba   +9 more
doaj   +1 more source

The impact of streetlights on an aquatic invasive species: artificial light at night alters signal crayfish behaviour [PDF]

open access: yes, 2016
Artificial light at night (ALAN) can significantly alter the behaviour, communication and orientation of animals, and will potentially interact with other stressors to affect biodiversity.
Cable, Joanne   +5 more
core   +1 more source

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

open access: yesEnvironmental 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   +1 more source

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

open access: yesKnowledge 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  

CRAYFISHERIES IN FINLAND, A SHORT OVERVIEW

open access: yesKnowledge and Management of Aquatic Ecosystems, 2004
Crayfish trapping and activities related to crayfishing have traditionally been lucrative businesses in rural Finland. The catch itself, varying in the 1990’s from 2 to 4 millions crayfish annually, is worth 4 to 8 millions euros.
JUSSILA J., MANNONEN A.
doaj   +1 more source

Heavy metals effects on life traits of juveniles of Procambarus clarkii [PDF]

open access: yes, 2019
An incubation experiment of juvenile crayfish (Procambarus clarkii) following a three- level treatment design approach was performed to assess the effect of different heavy metal concentrations on their life history traits (lifespan, growth, moult and ...
Alcorlo, Paloma   +2 more
core   +1 more source

Invasive crayfish impacts on native fish diet and growth vary with fish life stage [PDF]

open access: yes, 2016
Assessing the impacts of invasive organisms is a major challenge in ecology. Some widespread invasive species such as crayfish are potential competitors and reciprocal predators of ecologically and recreationally important native fish species.
England, Judy   +3 more
core   +1 more source

The activity of signal crayfish (Pacifastacus leniusculus) in relation to thermal and hydraulic dynamics of an alluvial stream, UK [PDF]

open access: yes, 2014
Signal crayfish (Pacifastacus leniusculus) are an invasive species of global significance because of their detrimental impacts on freshwater environments and native organisms.
BS Cade   +38 more
core   +2 more sources

Immune Response in Crayfish Is Species-Specific and Exhibits Changes along Invasion Range of a Successful Invader

open access: yesBiology, 2021
Immunity is an important component of invasion success since it enables invaders’ adaptation to conditions of the novel environment as they expand their range.
Paula Dragičević   +6 more
doaj   +1 more source

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