Results 111 to 120 of about 299 (143)
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Habituation of Backward Escape Swimming in the Marbled Crayfish
Zoological Science, 2016In the present study, we performed behavioral analyses of the habituation of backward escape swimming in the marbled crayfish, Procambarus fallax. Application of rapid mechanical stimulation to the rostrum elicited backward swimming following rapid abdominal flexion of crayfish.
Azusa, Kasuya, Toshiki, Nagayama
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Can the parthenogenetic marbled crayfish Marmorkrebs compete with other crayfish species in fights?
Journal of Ethology, 2010The parthenogenetic marbled crayfish, Marmorkrebs, has no known wild population, but has been introduced into natural ecosystems in two continents. Interactions with native crayfish, particularly through fighting, could affect the ecological impact of Marmorkrebs introductions.
Zen Faulkes
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Shelter preference in the Marmorkrebs (marbled crayfish)
Behaviour, 2016For many animals, shelters are valuable source to hide from predators. To know acquisition of adequate shelter is important to understand social interactions of animals. Preferences for types of shelter used by the Marmorkrebs (marbled crayfish) were analysed behaviourally.
Kazuya Takahashi, Toshiki Nagayama
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Journal of Experimental Zoology Part A: Comparative Experimental Biology, 2005
AbstractDevelopment, growth, and egg production of the Marmorkrebs (marbled crayfish), a crayfish with parthenogenetic reproduction, uncertain geographic origin, and taxonomic position, was studied under laboratory conditions. Length and weight increments strongly depended on temperature being highest at 30°C, and lowest at 15°C. At 25°C, cephalothorax
Robert, Seitz +4 more
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AbstractDevelopment, growth, and egg production of the Marmorkrebs (marbled crayfish), a crayfish with parthenogenetic reproduction, uncertain geographic origin, and taxonomic position, was studied under laboratory conditions. Length and weight increments strongly depended on temperature being highest at 30°C, and lowest at 15°C. At 25°C, cephalothorax
Robert, Seitz +4 more
openaire +2 more sources
Development Genes and Evolution, 2006
This study sets out to provide a systematic analysis of the development of the primordial central nervous system (CNS) in embryos of two decapod crustaceans, the Australian crayfish Cherax destructor (Malacostraca, Decapoda, Astacida) and the parthenogenetic Marbled crayfish (Marmorkrebs, Malacostraca, Decapoda, Astacida) by histochemical labelling ...
K, Vilpoux, R, Sandeman, S, Harzsch
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This study sets out to provide a systematic analysis of the development of the primordial central nervous system (CNS) in embryos of two decapod crustaceans, the Australian crayfish Cherax destructor (Malacostraca, Decapoda, Astacida) and the parthenogenetic Marbled crayfish (Marmorkrebs, Malacostraca, Decapoda, Astacida) by histochemical labelling ...
K, Vilpoux, R, Sandeman, S, Harzsch
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The parthenogenetic Marmorkrebs (marbled crayfish) produces genetically uniform offspring
Naturwissenschaften, 2007Genetically identical animals are very much in demand as laboratory objects because they allow conclusions about environmental and epigenetic effects on development, structures, and behavior. Furthermore, questions about the relative fitness of various genotypes can be addressed. However, genetically identical animals are relatively rare, in particular,
Peer, Martin +2 more
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Effects of s-metolachlor on early life stages of marbled crayfish
Pesticide Biochemistry and Physiology, 2019The effects of s-metolachlor chronic exposure at concentrations of 1.1 μg/L (maximal real environmental concentration in the Czech Republic), 11 μg/L (environmental relevant concentration) and 110 μg/L on early life stages of marbled crayfish (Procambarus virginalis) was evaluated under laboratory conditions.
Josef, Velisek +5 more
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Trophic ecology of invasive marbled and spiny-cheek crayfish populations
Biological Invasions, 2020North American cambarid crayfish have been highly successful in establishing and spreading across Europe and are now over-invading earlier arrivals in many water bodies. Parthenogenetic marbled crayfish (Procambarus virginalis), which originated from aquarium stocks, are relatively recent invaders and have established in lakes previously invaded by ...
Stefan M. Linzmaier +3 more
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Symmetry variation in the heart‐descending artery system of the parthenogenetic marbled crayfish
Journal of Morphology, 2008AbstractThe internal anatomy of freshwater crayfish is strictly bilaterally symmetric, with the conspicuous exception of the vertically oriented descending artery (sternal artery), which originates from the heart and terminates in the subneural artery.
Günter, Vogt +2 more
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Cell and Tissue Research, 2007
Crustacean-SIFamide (GYRKPPFNGSIFamide) is a novel neuropeptide that was recently isolated from crayfish nervous tissue. We mapped the localisation of this peptide in the median brain and eyestalk neuropils of the marbled crayfish (Marmorkrebs), a parthenogenetic crustacean.
Polanska, M., Yasuda, A., Harzsch, S.
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Crustacean-SIFamide (GYRKPPFNGSIFamide) is a novel neuropeptide that was recently isolated from crayfish nervous tissue. We mapped the localisation of this peptide in the median brain and eyestalk neuropils of the marbled crayfish (Marmorkrebs), a parthenogenetic crustacean.
Polanska, M., Yasuda, A., Harzsch, S.
openaire +3 more sources