Results 111 to 120 of about 542 (151)

Predation on larvae of the noble crayfish, Astacus astacus L.

Aquaculture, 1990
Abstract The predation by dragonfly larvae ( Aeschna grandis ) and adult female crayfish on second-stage young of the noble crayfish, Astacus astacus , was studied in aquarium experiments. Combinations of crayfish young with and without adult female crayfish, with and without shelter were made in 4×4 set-ups with dragonfly larvae and 4×2 without ...
Rolf Gydemo, Lars Westin, Anders Nissling   +2 more
openaire   +1 more source

Dose-dependent mortality of the noble crayfish (Astacus astacus) to different strains of the crayfish plague (Aphanomyces astaci)

Journal of Invertebrate Pathology, 2014
Several reports of the European crayfish species carrying a latent infection of the crayfish plague (Aphanomyces astaci) have emerged and the discussion has focused especially on the lowered virulence of As-genotypes behind decreased mortality. The aim of this study was to compare the killing rate of different A.
Vainikka Anssi, Kokko Harri Ilkka, Jussila Japo, Makkonen Jenny Irmeli, Kortet Raine   +4 more
openaire   +2 more sources

Fusarium avenaceum causes burn spot disease syndrome in noble crayfish (Astacus astacus)

Journal of Invertebrate Pathology, 2013
Burn spot disease has been causing epidemics both in the Estonian mainland and in Saaremaa Island in the threatened noble crayfish (Astacus astacus) stocks. To study the cause of the disease, we isolated several Fusarium spp. from Estonian noble crayfish (A. astacus) populations suffering from burn spot disease syndrome.
J, Makkonen, J, Jussila, L, Koistinen, T, Paaver, M, Hurt, H, Kokko   +5 more
openaire   +2 more sources

Signal crayfish, Pacifastacus leniusculus, as a vector for Psorospermium haeckeli to noble crayfish, Astacus astacus

Aquaculture, 1996
Abstract As part of investigations of the ecological impact and transmission of the crayfish parasite Psorospermium haeckeli , a laboratory experiment was performed where noble crayfish, Astacus astacus , and signal crayfish, Pacifastacus leniusculus , from populations in which P.
openaire   +1 more source

Distribution and epidemiology of genotypes of the crayfish plague agent Aphanomyces astaci from noble crayfish Astacus astacus in Finland

Diseases of Aquatic Organisms, 2013
The crayfish plague agent Aphanomyces astaci was isolated from 69 noble crayfish Astacus astacus samples in Finland between 1996 and 2006. All isolates were genotyped using randomly amplified polymorphic DNA-polymerase chain reaction (RAPD-PCR).
Viljamaa-Dirks, S., Heinikainen, S., Torssonen, H., Pursiainen, M., Mattila, J., Pelkonen, S.   +5 more
openaire   +2 more sources

Development and characterization of novel tetranucleotide microsatellite markers in the noble crayfish (Astacus astacus) suitable for highly multiplexing and for detecting hybrids between the noble crayfish and narrow-clawed crayfish (A. leptodactylus)

Aquaculture, 2017
Abstract 48 novel tetranucleotide microsatellite loci were developed for the noble crayfish ( Astacus astacus ) using Illumina MiSeq next generation sequencing technology. It was demonstrated that 25 loci were polymorphic and 19 loci could be co-amplified in a single multiplex polymerase chain reaction (PCR) assay and genotyped as a single panel on ...
Riho Gross, Kuldar Kõiv, Lilian Pukk, Katrin Kaldre   +3 more
openaire   +1 more source

Morphometric Characteristics of Noble Crayfish (Astacus astacus) in Croatia

2006
Noble crayfish (Astacus astacus (Linnaeus, 1758)) is one of four native European crayfish species inhabiting Croatian freshwater habitats and it is protected by the Croatian law. It is naturally distributed in continental part of Croatia in the Drava-Danube and Sava River basins, forming both river and lake populations and it also occurs in the ...
Erben, Radovan, Maguire, Ivana, Lucić, Andreja, Hudina, Sandra   +3 more
openaire   +2 more sources

Morphological characteristics of noble crayfish (Astacus astacus) in Croatia

2004
Noble crayfish (Astacus astacus (Linnaeus, 1758)) is one of four native European crayfish species inhabiting Croatian freshwater habitats and it is protected by the Croatian law. It is naturally distributed in the continental part of Croatia in the Drava-Danube and Sava River basins, forming both river and lake populations and it also occurs in the ...
Maguire, Ivana, Hudina, Sandra, Faller, Matej, Lucić, Andreja   +3 more
openaire   +2 more sources

Egg development and lifecycle timing in the noble crayfish (Astacus astacus)

Aquaculture, 1987
Abstract Egg development time in Astacus astacus was strongly influenced by temperature. Five batches of eggs were subjected to different temperature regimes after approximately 600 degree days and, by increasing the temperature, the total number of degree days to hatching was reduced from 1900 to 1300.
Dag O. Hessen, Trond Taugbøl, Eirik Fjeld, Jostein Skurdal   +3 more
openaire   +1 more source

Behavioural elements of the noble crayfish, Astacus astacus (Linnaeus, 1758)

Crustaceana, 2004
Based on contemporary literature and original observations under laboratory conditions, this paper attempts to compile a first comprehensive ethogram for the noble crayfish, Astacus astacus . Sixty-six behavioural elements are described, belonging to 12 functional cycles. Supplementary proposals are welcome.
openaire   +1 more source