Results 151 to 160 of about 1,184 (166)

Sexual difference in modes of selection on the pleopods of crayfish (Decapoda: Astacoidea) revealed by the allometry of developmentally homologous traits

Canadian Journal of Zoology, 2003
Crayfish have five pairs of abdominal limbs called pleopods. In males, the first and second pairs of pleopods are used for transferring spermatophores to the female during copulation. The remaining pleopods in males have no obvious function. Female crayfish use their pleopods to carry eggs. Accordingly, it is expected that the selection pressures that
Naoko Kato, Tadashi Miyashita
openalex   +2 more sources

Reproduction, Molting and Mortality of Female Noble Crayfish, Astacus Astacus (L., 1758), From Five Norwegian Populations Subjected To Indoor Culture Conditions (Decapoda, Astacoidea)1)

Crustaceana, 1990
La proportion des femelles d'Astacus astacus a maturite (d'apres la presence des glandes cementaires) quand elles etaient soumises a des conditions de culture a l'interieur a partir du mois d'aout, etait plus elevee (92,9-96,7%) comparee a celle des femelles dans les conditions naturelles (6,5-74,0%).
Trond Taugbøl, Jostein Skurdal
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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 ...
IO Growns, Alastair Richardson
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Notes On the So-Called "Blue Color Phase" in North American Cambarid Crawfishes (Decapoda, Astacoidea)

Crustaceana, 1987
J. F. Fitzpatrick
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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

Life history and ecology of the Greenbrier Crayfish Cambarus smilax Loughman, Simon & Welsh, 2011 (Decapoda: Astacoidea: Cambaridae)

Journal of Crustacean Biology, 2022
Abstract We studied the life history and ecology of the Greenbrier Crayfish, Cambarus smilax (Loughman, Simon & Welsh, 2011) in Thorny Creek and the West Fork of the Greenbrier River, West Virginia from August 2010 to July 2011.
Paul W Hughes, Charlie L Hughes, Zackary A Graham, Zachary W Dillard, Thomas G Jones, Zachary J Loughman   +5 more
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Analisi morfometrica dei gamberi dulcacquicoli Austropotamobius pallipes (species complex), Procambarus clarkii e Orconectes limosus (Decapoda: Astacoidea)

, 2010
Stefania Chiesa, Massimiliano Scalici, Giancarlo Gibertini   +2 more
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МЕТОДИКА РАСШИРЕННОЙ МОРФОМЕТРИИ И НОВЫЙ МЕТОДИЧЕСКИЙ ПОДХОД ПРИ ОПРЕДЕЛЕНИИ СТЕПЕНИ ЗРЕЛОСТИ САМЦОВ КОЛЮЧЕГО РАКА FAXONIUS LIMOSUS (RAFINESQUE, 1817) (ASTACOIDEA: CAMBARIDAE)

2023
Разработаны оригинальные методики, необходимые для полноценного изучения биологии колючего рака Faxonius limosus: создания основы биометрического паспорта вида, оценки морфометрической популяционной изменчивости, анализа созревания самцов, их нерестовой активности.
openaire   +1 more source

Ultrastructure of spermatozoa from three genera of crayfish Orconectes, Procambarus and Astacus (Decapoda: Astacoidea): New findings and comparisons

Zoologischer Anzeiger, 2013
Hamid Niksirat, Antonin Kouba, Martin Pšenička   +2 more
exaly  

Range expansion of the invasive rusty crayfish Orconectes rusticus (Girard, 1852) (Decapoda: Astacoidea) in northeastern Iowa (USA) rivers

Journal of Crustacean Biology, 2016
Peter B Berendzen
exaly