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Algal flora associated with a Halophila stipulacea (Forsskal) Ascherson (Hydrocharitaceae, Helobiae) stand in the western Mediterranean ArchiMer
Rindi, F; Maltagliati, F; Rossi, F; Acunto, S; Cinelli, F.
Halophila stipulacea, a seagrass introduced into the Mediterranean Sea as a Lessepsian immigrant, is nowadays common in the eastern Mediterranean, and it was recently recorded in the western Mediterranean; very little information is available about the algal flora associated with this species. During a survey of a Halophila stipulacea stand at Vulcano Island (Eolian Islands, western Mediterranean), samples were collected at three depths (5 m, 15 m and 25 m) for identification of algal epiphytes. Thirty-six species of macroalgae were found. The epiflora of the leaves consisted of 20 species, the others being mixed with or entangled in the rhizomes. On the leaves, Ceramium tenerrimum, Dasya corymbifera, Polysiphonia cfr. tenerrima, Spyridia filamentosa,...
Tipo: Text Palavras-chave: Halophila stipulacea; Épiphytes algaux; Épiphytisme; Algues marines; Méditerranée occidentale; Halophila stipulacea; Seagrass epiphytes; Epiphytism; Marine algae; Western Mediterranean.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00325/43605/43924.pdf
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Small-scale morphological and genetic differentiation in the Mediterranean killifish Aphanius fasciatus (Cyprinodontidae) from a coastal brackish-water pond and an adjacent pool in northern Sardinia ArchiMer
Maltagliati, F; Domenici, P; Fosch, Cf; Cossu, P; Casu, M; Castelli, A.
Two samples of Aphanius fasciatus collected in the Pilo pond (northern Sardinia, Italy) and in an adjacent pool of small surface area were analysed morphologically (235 individuals) and genetically (a subsample of 58 individuals). The aims of the present study were (i) to test the hypothesis that different predation pressures may be associated with morphological and/or genetic differences between samples from each habitat and (ii) to assess the level of divergence between the two populations. Morphological analysis was based on the relative size of fins because it has been shown to be associated with predation pressure. The relative caudal fin area (caudal fin area/total body surface) was smaller in specimens from the pool, in both males and females,...
Tipo: Text Palavras-chave: Morphologie; Taille relative des nageoires; Variation génétique; Divergence de populations; Eaux saumâtres; Morphology; Relative fin size; Genetic variation; RAPDs; Population divergence; Brackish-water habitats.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/00322/43291/43026.pdf
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