Results 121 to 130 of about 826 (145)

Description of burrow structure for four crayfish species (Decapoda: Astacoidea: Cambaridae)

, 2019
Florey, Cassidy L
core  

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.
Ray Ingle, Ingle Ray
exaly   +3 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 ...
Tadashi Kawai, Keith A Crandall, Kawai Tadashi   +2 more
exaly   +3 more sources

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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.
Martina Kocova Veselska, Tadashi Kawai, Denis Audo   +2 more
exaly   +3 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 .
Hamid Niksirat, Antonin Kouba, Martin Psenicka   +2 more
exaly   +2 more sources

Quantitative Habitat Models for the Conservation of the Endangered European Crayfish Austropotamobius pallipes Complex (Astacoidea: Astacidae) [PDF]

, 2016
Crayfish are the largest mobile freshwater invertebrates and are keystone species in European aquatic ecosystems particularly in small streams and rivers. The white-clawed crayfish Austropotamobius pallipes (a species complex) is currently classified by the IUCN Red List as an endangered species (EN), because its populations have decreased ...
Vezza, Paolo, Ghia, Daniela, Fea, Gianluca   +2 more
openaire   +3 more sources

Appeasement Displays in Cambarid Crayfish (Decapoda, Astacoidea)

1979
exaly   +2 more sources

Distribucija bjelonogog raka Austropotamobius pallipes species complex (Astacoidea ; Astacidae) u Bosni i Hercegovini / The sistribution of the White-clawed Crayfish Austropotamobius pallipes Species Complex (Astacoidea; Astacidae) in Bosnia and Herzegovina

Struktura i dinamika ekosistema Dinarida / Structure and Dynamics of Ecosystem Dinarides, 2012
exaly   +2 more sources

The distribution of crayfish (Decapoda, Astacoidea) and branchiobdellids (Annelida, Clitellata) in Vienna, Austria

, 2018
submitted by Arthur ...
Pichler, Arthur
openaire   +2 more sources

Review of crayfish color patterns in the Family Cambaridae (Astacoidea), with discussion of their possible importance

Zootaxa, 2020
The use of color photographs in crayfish species descriptions, state faunal books and popular articles is relatively recent. Except for verbal color descriptions, color and color patterns have not often been explored by crayfish researchers. Carotenoids and carotenoproteins are responsible for much of the color found in the integument and exoskeleton ...
openaire   +3 more sources