Results 31 to 40 of about 1,459 (197)

Movement patterns and shelter choice of spiny-cheek crayfish (Orconectes limosus) in a large lake’s littoral zone [PDF]

open access: yes, 2016
he study of individual movement patterns and habitat choice is a fundamental step to assess an invasive species’ range extension and to inform possible management options.
Burkhardt-Holm, Patricia   +3 more
core   +2 more sources

Water chemistry and endangered white-clawed crayfish: A literature review and field study of water chemistry association in Austropotamobius pallipes [PDF]

open access: yes, 2015
Populations of the endangered white-clawed crayfish (Austropotamobius pallipes) have rapidly declined in distribution and density in recent decades as a result of invasive crayfish, disease and habitat degradation.
A.M. Dunn   +5 more
core   +2 more sources

Update on the distribution of freshwater crayfish in Croatia

open access: yesKnowledge and Management of Aquatic Ecosystems, 2011
Four indigenous European and two non-indigenous American freshwater crayfish species inhabit Croatian freshwater habitats. Generally, the noble crayfish (Astacus astacus), the narrow-clawed crayfish (Astacus leptodactylus) and the stone crayfish ...
Maguire I., Jelić M., Klobučar G.
doaj   +1 more source

The freshwater crayfish Austropotamobius pallipes in South Tyrol. Heritage species and bioindicator [PDF]

open access: yes, 2003
Rapid decline of crayfish in European freshwaters and continuing threat necessitate integrated actions in conservation and management of native crayfish populations.
Fureder, L.   +4 more
core   +1 more source

Meat Yield and the Length-Weight Relationships of the Narrow-Clawed Crayfish, Pontastacus leptodactylus (Eschscholtz, 1823) [PDF]

open access: yes, 2023
The present study investigated the length-weight relationships and meat yield of narrow-clawed crayfish, Pontastacus leptodactylus (Eschscholtz, 1823), in Kocahidir Irrigation Reservoir.
Berber, Selcuk   +2 more
core   +4 more sources

A COMPARISON OF SURVIVAL AND GROWTH IN JUVENILE ASTACUS LEPTODACTYLUS (ESCH.) AND PACIFASTACUS LENIUSCULUS (DANA) UNDER CONTROLLED CONDITIONS

open access: yesKnowledge and Management of Aquatic Ecosystems, 2006
The aim of this study was to compare survival and growth of juvenile narrow-clawed crayfish (Astacus leptodactylus) and signal crayfish (Pacifastacus leniusculus) fed only with experimental pellets (45% of proteins, 6% of fat, 20% crude fibre) under ...
ULIKOWSKI D., KRZYWOSZ T., ŚMIETANA P.
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

STATUS OF FRESHWATER CRAYFISH IN LATVIA

open access: yesKnowledge and Management of Aquatic Ecosystems, 2005
There are three crayfish species present in Latvia: the European noble crayfish (Astacus astacus), the narrow-clawed crayfish (Astacus leptodactylus), and the North-American signal crayfish (Pacifastacus leniusculus) species. Probably only noble crayfish
ARENS A., TAUGBØL T.
doaj   +1 more source

Impact of Stocking Density on the Survival, Growth and Injury of Narrow Narrow-Clawed Crayfish ( Pontastacus leptodactylus ) Reared in a Flowing Brackish Water System

open access: yesActa Natura et Scientia, 2022
The crayfish population dramatically declined in most lakes and dams in Türkiye; hence, crayfish culture is a possible option to increase the supply. This study aimed to determine the effects of stocking density on the growth performance and survival ...
Yavuz Mazlum, Cumhur Uzun
doaj   +1 more source

Effects of methyl farnesoate injection on spermatozoa number and reproductive indices in the narrow-clawed crayfish Pontastacus leptodactylus [PDF]

open access: yesNauplius, 2022
In this study, the effect of methyl farnesoate (MF) injection on haemolymph MF levels, spermatozoa production and the reproductive indices of gonadosomatic index (GSI), testicular index (TI) and vasosomatic index (VSI) were investigated in males of ...
Mehmet Bal, Ayşe Gül Harlıoğlu
doaj   +1 more source

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