Results 121 to 130 of about 856 (146)

Patrones de diversificación y procesos evolutivos en cangrejos de río (Crustacea, Astacoidea)

, 2015
openaire   +1 more source

Effects of Aminomethylphosphonic Acid on the Transcriptome and Metabolome of Red Swamp Crayfish, Procambarus clarkii. [PDF]

Int J Mol Sci
Mao T, Gan J, Yuan K, He L, Yu Y, Liu Z, Zhou Y, Wu G.   +7 more
europepmc   +1 more source

Freshwater Crayfishes (Astacoidea)

, 1997
Crayfishes inhabiting the northern hemisphere and discussed below belong to the superfamily Astacoidea. Species of this superfamily have the first and second pairs of pleopods present. The first pair of the female may be quite small, but for the male these , and the second pair, are modified as sperm transference organs [gonopods, figs.
Raymond William Ingle
exaly   +3 more sources

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Gastrolith Growth During Proecdysis in the Crayfish, Faxonella Clypeata (Hay, 1899) (Decapoda, Astacoidea)

Crustaceana, 1977
Die Hautungszyklen von normal ernahrten und von hungernden Faxonella clypeata wurden im Labor untersucht, um Wechselbeziehungen zwischen bestimmten, wahrend der Proecdysis ablaufenden Ereignissen (Ablosen der Epidermis von der alten Kutikula, Bildung von Gastrolithen, Borsten und neuer Kutikula) zu studieren. Das Stadium Do machte etwa 50-70% der Dauer
K. Ranga Rao, Carl J. Mohrherr, Dana Reinschmidt, Milton Fingerman   +3 more
exaly   +2 more sources

Remains of Decapod Crustaceans From the Late Cenomanian and Early Turonian of the Czech Republic Mistakenly Assigned to Crayfishes (Astacoidea)

Journal of Crustacean Biology, 2023
Abstract Two species of fossil crustaceans from the Czech Republic are assigned to AstacusFabricius, 1775, a European crayfish: A. laevissimusFritsch & Kafka, 1887 and A. cenomanensisFritsch & Kafka, 1887. Both come from marine sediments, making doubtful their assignment to crayfishes.
Tadashi Kawai, Denis Audo, Martina Kočová Veselská   +2 more
exaly   +3 more sources

Mating Behavior of the Crayfish Orconectes Nais (Faxon, 1885) (Decapoda, Astacoidea)

Crustaceana, 1977
[La conduite d'appariement des Orconectes nais etait la meme que celle d'autres especes d'ecrevisses sauf l'approche du mâle a la femelle et les manoeuvres du mâle pour mettre la femelle dans une position renversee. Sa conduite d'approche consistait en tendant les seconde et troisieme paires de pereiopodes pour prendre la femelle et la manipuler dans ...
exaly   +2 more sources

Ultrastructure of Spermatozoa From Three Genera of Crayfish Orconectes, Procambarus and Astacus (Decapoda: Astacoidea): New Findings and Comparisons

Zoologischer Anzeiger, 2013
Abstract Ultrastructure of spermatozoa of three crayfish genera including Orconectes limosus (Rafinesque, 1817), Procambarus clarkii (Girard, 1852), and Astacus leptodactylus (Eschscholtz, 1823) was studied using transmission electron microscopy. The length of the acrosome was significantly greater in A .
Antonín Kouba, Martin Pšenička, Iryna Kuklina   +2 more
exaly   +2 more sources

A Comparison of the Gastric Mills of Nine Species of Parastacid Crayfish From a Range of Habitats, Using Multivariate Morphometrics (Decapoda, Astacoidea)

Crustaceana, 1990
La morphometrie des ossicules zygocardiaques et urocardiaques du moulin gastrique a ete etudiee chez neuf especes d'ecrevisse Parastacidae, en utilisant l'analyse canonique multivariee. Toutes les especes differaient de facon significative les unes des autres, mais le groupe de celles vivant en eau ouverte et celles appartenant au genre Engaeus ...
I.O. Growns, A.M.M. Richardson
exaly   +2 more sources

Global Diversity and Conservation of Freshwater Crayfish (Crustacea: Decapoda: Astacoidea)

2016
The number of species in the three families of freshwater crayfish worldwide (Astacidae, Cambaridae, and Parastacidae) are updated by region. These are: Astacidae, western North America (5 species) and Europe (5 species), Cambaridae, eastern North America and Mexico (423 species) and Asia (6 species), and Parastacidae, Oceania (153 species), South ...
Keith A. Crandall
exaly   +2 more sources

Appeasement Displays in Cambarid Crayfish (Decapoda, Astacoidea)

1979
exaly   +2 more sources