Seasonal and gender-related differences in morphometric features and cellular and biochemical parameters of Carcinus aestuarii from the Lagoon of Venice |
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| Institution: | 1. Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK;2. Pathology and Molecular Systematics Team, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth Laboratory, Weymouth, Dorset DT4 8UB, UK;3. Department of Biomedical Sciences, University of Prince Edward Island, Charlottetown, Prince Edward Island C1A 4P3, Canada;4. European Union Reference Laboratory for Crustacean Diseases, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth Laboratory, Weymouth, Dorset DT4 8UB, UK;5. Department of Life Sciences, Natural History Museum London, Cromwell Road, London SW7 5BD, UK;6. Department of Animal Science and Aquaculture, Dalhousie University Faculty of Agriculture, 58 River Road, Truro, Nova Scotia B2N 5E3, Canada;7. Epidemiology and Risk Team, Centre for Environment, Fisheries and Aquaculture Science (Cefas), Weymouth Laboratory, Weymouth, Dorset DT4 8UB, UK;1. INRA, UMR CBGP (INRA/IRD/CIRAD/Montpellier Supagro), Campus International de Baillarguet, CS30016, F-34988 Montferrier-sur-Lez Cedex, France;2. Max Planck Institute for Chemical Ecology, Department of Entomology, 07745 Jena, Germany;3. INRA, UMR1202 BIOGECO, 69 Route d''Arcachon, F-33612 Cestas Cedex, France;1. Institut de Physique du Globe de Strasbourg (IPGS)-UMR 7516, Université de Strasbourg (UdS), France;2. Libyan Petroleum Institute (LPI), Tripoli, Gergaresh Road km. 7, P.O. Box 6439, Libya;3. TOTAL, Technical Centre, Avenue Larribau, 64018 Pau Cedex, France;1. Department of Life Sciences, University of Siena, Via A. Moro 2, 53100, Siena, Italy;2. Department of Biology, Ecology and Earth Sciences, Di.B.E.S.T., University of Calabria, Via P. Bucci, Cubo 4B, 87036, Rende, Italy |
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| Abstract: | In this study, the seasonal variations in the morphometric features and in the cellular and biochemical parameters of the haemolymph were investigated in both male and female crabs (Carcinus aestuarii). Crabs were seasonally (November 2010–August 2011) collected from the Lagoon of Venice, and the moult stage, weight, width and length of the carapace, and width and length of the bigger chela were evaluated. In addition, the total haemocyte count (THC), haemocyte diameter and volume, haemolymph glucose and total protein levels, and haemolymph phenoloxidase (PO) and N-acetyl-β-glucosaminidase (NAG) activities were measured. The results demonstrated that the collected crabs were all in the intermoult stage and that the males were bigger than the females. A two-way ANOVA revealed a significant effect of season on the THC and the haemocyte volume and a significant influence of gender on the haemocyte diameter. Season and gender significantly affected the haemolymph glucose concentration, whereas haemolymph protein levels were dependent only on the season. In addition, both season and gender significantly influenced the PO and NAG activities in the haemolymph. Overall, the results demonstrated that crab morphometric features as well as haemolymph cellular and biochemical parameters varied markedly as a function of both season and gender. |
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| Keywords: | Crabs Morphometric features Seasonal variations Gender Cell parameters Biochemical parameters |
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