M. FELETTI

Confined environments are particular biotopes of high scientific concern. The rockpools, owing to the peculiarity of their vegetal and animal population, are an important research subject in ecology, genetics and physiology, and particularly for studies concerning adaptation phenomena. In the rockpools live organisms adapted to hold out in...

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Fecal pellets (FP) are important components of the particulate organic matter (POM); they are the final remainings of nutrition and digestion processes performed by zooplankters and represent a food and energy source in neritic and pelagic ecosystems; furthermore, they contribute to carry several substances such as pollutants and radionuclides,...

Nel Mare Mediterraneo le specie di meduse presenti hanno scarso potere urticante, anche se accidentalmente si sono verificati casi di particolare gravità (Maretic et al., 1991); nei mari tropicali e lungo le coste australiane vivono invece specie il cui veleno può provocare anche effetti letali sull'uomo. Questi effetti sono dovuti alle...

In Antarctic sea waters the composition and structure of living communities and the morphology of species are strongly affected by low temperatures; furthermore, the environmental conditions and the adaptive strategies promoted evolution efforts and development of endemisms. Scanning electron microscopy can greatly contribute to the knowledge...

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The structure of the zooplankton biotic community and of copepod population in the coastal area of Terra Nova Bay (Ross Sea, Antarctica) was investigated during the 10th Italian Antarctic Expedition (1994/1995). Zooplankton biotic community consisted mainly of pteropods (Limacina helicina and Clione antarctica), Cyclopoid (Oithona similis),...

Scanning electron microscopy (SEM) can highly contribute to the knowledge of body structures in order to differentiate between different species or between varieties of the same species; this is important in extreme environments, such as in Antarctic waters, where the evolution efforts promoted the development of endemisms. In this work the...