Hydrodynamism and its influence on the reproductive condition of the edible sea urchin Paracentrotus lividus |
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| Institution: | 1. NeoEnBiz Co., Institute of Environmental Safety and Protection, DeawooTechnoPark A-1306, Bucheon, Kyeonggido 420-806, Republic of Korea;2. Department of Energy and Environmental System Engineering, University of Seoul, Seoul, Republic of Korea;3. Korea Institute of Ocean Science and Technology, 1270 Sa2dong, Ansan, Republic of Korea;4. Maritime and Ocean Engineering Institute, Daegeon, Republic of Korea;5. Shimoda Marine Research Center, University of Tsukuba, Shizuoka 415-0025, Japan;6. Hopkins Marine Station, Stanford University, Pacific Grove, CA 93950, USA;1. Enea CR Portici, P.le E. Fermi, 1, 80055 Portici, Naples, Italy;2. Department of Science and Technology, Parthenope University of Naples, Centro Direzionale – Isola C4, 80143 Naples, Italy;3. Anton Dohrn Zoological Station, 80121 Naples, Italy |
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| Abstract: | Despite the large body of work published in the last two decades on the reproduction of the sea urchin Paracentrotus lividus, the reproductive aspects linked to hydrodynamic conditions and their influence on gonad production remain poorly understood. The present paper aims to evaluate the effect of hydrodynamism on the reproductive cycle of P. lividus. Variability in the gonadosomatic index (GSI) of P. lividus was estimated seasonally from 2007 to 2008 at two shallow sub-littoral flat basaltic areas at Ustica Island (Western Mediterranean). GSI was higher in the sites characterized by low hydrodynamism than in those with high hydrodynamism. Results also suggest a possible role for hydrodynamism in triggering processes of resource limitation (food shortage), probably by interfering with P. lividus feeding activity. |
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