Seasonal variation of energy metabolism in ghost crab Ocypode quadrata at Siriú Beach (Brazil)
| Autor: | Eliane Fraga da Silveira, Eduardo Périco, Anapaula Sommer Vinagre, Fabiana Pinto Ribarcki, Ana Paula Nunes do Amaral |
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| Rok vydání: | 2007 |
| Předmět: |
Gills
Male Gill medicine.medical_specialty animal structures food.ingredient Brachyura Physiology media_common.quotation_subject Hepatopancreas Biochemistry chemistry.chemical_compound Animal science food Hemolymph Internal medicine medicine Animals Ghost crab Molecular Biology Triglycerides media_common biology Glycogen Muscles fungi biology.organism_classification Crustacean Cholesterol Glucose Endocrinology chemistry Ocypode Carbohydrate Metabolism Female Seasons Reproduction Energy Metabolism Brazil |
| Zdroj: | Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology. 146:514-519 |
| ISSN: | 1095-6433 |
| Popis: | The aim of this study was to analyze the seasonal variations of carbohydrate and lipid metabolism of the ghost crab Ocypode quadrata (Fabricius, 1787) on a sandy beach in the southern region of Brazil. Crabs and hemolymph samples were collected monthly in the field. Hepatopancreas, gills, gonads and claw muscles were used for glycogen determination. In males, blood glucose levels increased in the summer and in the winter. The glycogen values increased significantly in the hepatopancreas in the winter, but remained constant in the muscle, gonads and gills. In females, hemolymph glucose levels, glycogen values in the hepatopancreas and in the gills remained constant throughout the year; however, muscular glycogen increased in the spring and gonad glycogen decreased in the summer. Hemolymph triglyceride levels of males and females and total cholesterol of males decreased significantly in the spring. In females, a significant increase of total cholesterol levels was found in the winter. The findings suggest that in O. quadrata lipids seem to be an important reserve of energy used during reproduction, both in males and females, while glycogen may be used during periods of intense activity or fasting. |
| Databáze: | OpenAIRE |
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