Crab, Cancer pagurus

The mandibular organ-inhibiting hormone of the crab Cancer pagurus produces two neurohormones that inhibit the secretion of methyl famesoate, which is thought to function as the juvenile hormone in crustaceans 357... 

Torgersen, T, Aasen, J., and Aune, T. 2005. Diarrhetic shellfish poisoning by okadaic acid esters from Brown crabs (Cancer pagurus) in Norway. Toxicon 46, 572-578. 

Exposure is mainly through food but also a direct uptake from water is also evident for aquatic organisms. This means that organisms exposed to even moderately elevated cadmium levels will bioaccumulate the element very effectively significantly elevated levels are found, for instance, in kidney and liver tissue from wild herbivorous animals such as the elk (Alces aloes ) and in the hepatopancreas of marine crustaceans such as the lobster (Homarus gammarus) and the crab (Cancer pagurus). 

Norway Norway November 2005 (Pecten maximus) Crabs (Cancer pagurus) 0.177-0.399 Unknown... 

During the determination (van den Oord et al., 1965) of the structure of emulsifiers (fatty acylsarcosyltaurines) in gastric juice from the crab, Cancer pagurus L., it was necessary to identify dodecenoic acid. The acid had no prominent band at 965 cm S but it did at 720 cm indicating the presence of a cis double bond (Ahlers... 

Fig. 5A -D. Spectra of lipoproteins from hemolymph and ovary of crabs. A Lipoprotein from ovary of crab Cancer pagurus) in 0.2 M phosphate buffer, pH 7. (Zagalsky et al. 1967) B Lipoprotein II (female-specific lipoprotein) isolated from hemolymph of vitellogenic blue crab Callinectes sapidus). Lipoprotein was in 0.05 M TRIS buffer (pH 8.0). (Lee and Puppione 1988). C Ovorverdin from Homarus gammarus in 0.5 M NaCl — 5 mm EDTA (pH 5). (Zagalsky 1985). D Lipoproteins from ovary of scallop, Pecten maximus, in 0.2 M phosphate buffer (pH 7). Free carotenoids were released from the lipoproteins by extraction with acetone. (Zagalsky et al. 1967)...

Poly d(A-T) was isolated from male sex organs of the crab Cancer pagurus. 

Wold, J.P., Kermit, M., and Woll, A. (2010) Rapid nondestructive determination of edible meat content in crabs (Cancer pagurus) by near-infrared imaging spectroscopy. Appl. Spectrosc., 64 (7), 691-699. 

The shells of shellfish consist not only of chitin. In the edible crab Cancer pagurus and the lobster Homarus americanus) the calcified, rigid parts of the exoskeleton also contain a series of proteins that are also found in the noncalcified, flexible regions. Most of these proteins have a molar mass below 20 kDa some of them seem specific to crustaceans but others are also present in some insects (Andersen, 1999). The cuticular proteins of the horseshoe crab [Limulus polyphemus) show similarities with those of other arthropods, in particular those of the spider Araneus diadematus, but their molar masses are lower (7-16 kDa) Dietzel, Andersen, and Hojrup, 2003). 

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