The Co-ordination of Swimmeret Movements in the Crayfish, Procambarus Clarkii (Girard)

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The Co-ordination of Swimmeret Movements in the Crayfish, Procambarus

Many Crustacea are characterized by the use of their appendages for swimming and feeding. In the lower Crustacea both the thoracic and abdominal appendages move for these purposes in a typical metachronal rhythm. The similar rhythmical movements found in the abdominal appendages of the crayfish (Hughes & Hickey, in preparation) are most probably based on similar nervous mechanisms, but here the...

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Aeromonas hydrophila, one reason causing the death of freshwater crayfish Procambarus clarkii (Girard, 1852)

Procambarus clarkii crayfish has been developed as an excellent animal model to study the characteristics and pathogenesis of white spot syndrome virus and the host defense mechanisms of crustacean. However, due to pathogen infections of crayfish in Chinese farms, research based on this model has been slowed down. Using triplex polymerase chain reaction, we found the virulence Aeromonas hydroph...

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Spermiogenesis in the Crayfish (procambarus Clarkii)

The sperm of the crayfish, Procambarus clarkii, is relatively simple among decapod sperm and was described in the first paper of this series (28). The present paper details the development of this sperm as followed with the light and electron microscopes. The process is divided into six stages for purposes of description. The main points of interest discussed are the absence of mitochondria or ...

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ژورنال

عنوان ژورنال: Journal of Experimental Biology

سال: 1960

ISSN: 1477-9145,0022-0949

DOI: 10.1242/jeb.37.4.657