Fine Structure and Mineralization of the Gastric Mill in the Crayfish Procambarus Clarkii During Intermolt Stage
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説明
Abstract This paper aims to elucidate the structure and characteristic mineralization of the gastric mill cuticle in the crayfish Procambarus clarkii (Girard) using light and transmission electron microscopy. Structure and mineralization of the lateral teeth of the gastric mill in the intermolt stage are documented. The lateral tooth is composed of two types: incisor-like teeth and molar-like teeth. The tooth structure is divided into three regions: “large-cusp region” is the protuberance region in the incisor-like teeth, “small-cusp region” is the protuberance region in the molar-like teeth, and “marginal region” is the surrounding region. The cuticle is divided into epicuticle, exocuticle, endocuticle, and membranous layer. The cuticle of the large-cusp region lacks epicuticle and endocuticle, while the cuticle of the small-cusp region lacks the epicuticle. The cuticle of the marginal region is composed of epicuticle, exocuticle, endocuticle, and membranous layer. Ultrastructurally, the exocuticle of th...
収録刊行物
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- Journal of Crustacean Biology
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Journal of Crustacean Biology 23 371-379, 2003-01-01
Oxford University Press (OUP)