Results 131 to 140 of about 826 (145)
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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 +3 more
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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 +3 more
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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 +5 more
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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 +5 more
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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
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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
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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 ...
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Cellulolytic activity in the hindgut of crayfish (Decapoda, Astacoidea).
, 1999 GHERARDI, FRANCESCA +3 more
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Australian Journal of Zoology, 1972
The development of the cephalothoracic grooves, orientation of the chelae in life (correlated with burrowing), and modifications of the sexual characters of the males are the main attributes utilized in deducing the probable phylogeny of the Parastacidae.
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The development of the cephalothoracic grooves, orientation of the chelae in life (correlated with burrowing), and modifications of the sexual characters of the males are the main attributes utilized in deducing the probable phylogeny of the Parastacidae.
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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
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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
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Italian Journal of Zoology, 2000
Abstract We report here on immunohistochemical studies of embryos of the Norway lobster Nephrops norvegicus at 90% development, the stage being assessed according to eye index. The sinus gland was readily identified as a teardrop shaped structure about 45 μm in length in 90% embryos and as an oval structure about 50 μm in length in post‐hatched larvae.
Giulianini PG +3 more
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Abstract We report here on immunohistochemical studies of embryos of the Norway lobster Nephrops norvegicus at 90% development, the stage being assessed according to eye index. The sinus gland was readily identified as a teardrop shaped structure about 45 μm in length in 90% embryos and as an oval structure about 50 μm in length in post‐hatched larvae.
Giulianini PG +3 more
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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.
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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.
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