13 research outputs found
Neue linguistische Methoden und arbeitstechnische Verfahren in der Erschliessung der Àgyptischen Grammatik
15 pĂĄginas, 1 tabla, 6 figuras.Does diversity beget diversity? Diversity
includes a diversity of concepts because it is linked to
variability in and of life and can be applied to multiple
levels. The connections between multiple levels of
diversity are poorly understood. Here, we investigated
the relationships between genetic, bacterial, and
chemical diversity of the endangered Atlanto-Mediterranean sponge Spongia lamella. These levels of
diversity are intrinsically related to sponge evolution
and could have strong conservation implications. We
used microsatellite markers, denaturing gel gradient
electrophoresis and quantitative polymerase chain
reaction, and high performance liquid chromatography to quantify genetic, bacterial, and chemical
diversity of nine sponge populations. We then used
correlations to test whether these diversity levels
covaried. We found that sponge populations differed
signiïŹcantly in genetic, bacterial, and chemical
diversity. We also found a strong geographic pattern
of increasing genetic, bacterial, and chemical dissimilarity with increasing geographic distance between
populations. However, we failed to detect signiïŹcant
correlations between the three levels of diversity
investigated in our study. Our results suggest that
diversity fails to beget diversity within a single species
and indicates that a diversity of factors regulates a
diversity of diversities, which highlights the complex
nature of the mechanisms behind diversityResearch funded by grants from the Agence Nationale de la
Recherche (ECIMAR), from the Spanish Ministry of Science
and Technology SOLID (CTM2010-17755) and Benthomics
(CTM2010-22218-C02-01) and the BIOCAPITAL project
(MRTN-CT-2004-512301) of the European Union. This is a
contribution of the Consolidated Research Group ââGrupo de
EcologıŽa BentoÂŽnica,ââ SGR2009-655.Peer reviewe
Hemiasterella aristoteliana n.sp. (Porifera: Hadromerida) from the Aegean Sea with a discussion of the family Hemiasterellidae
A representative of the genus Hemiasterella Carter, 1879 was found for the first time in the Mediterranean Sea during sampling in the shallow waters of the northern Aegean Sea. The new species, H. aristoteliana, is compared with Atlantic Hemiasterella elongata Topsent, 1928. The status of the family Hemiasterellidae is discussed
Hemiasterella aristoteliana n.sp. (Porifera: Hadromerida) from the Aegean Sea with a discussion of the family Hemiasterellidae
Hemiasterella aristoteliana n.sp. (Porifera: Hadromerida) from the Aegean Sea with a discussion of the family Hemiasterellidae
Phorbas posidoni n.sp. (Porifera, Poecilosclerida) from the Aegean Sea, with a discussion of the family Anchinoidae
Suberitidae (Demospongiae, Hadromerida) from the North Aegean Sea.
Sampling in the North Aegean Sea yielded nine species of the family Suberitidae, four of which, Pseudosuberites sulphureus, P. hyalinus, Suberiles ficus and S. syringella, are new for the fauna of the Eastern Mediterranean, and three more, S. carnosus, S. domuncula, and S. massa, are new records for the fauna of the Aegean Sea. For each of the nine species comments on the systematics, as well as geographical and ecological information is given. A redescription is given of the little known species Suberites massa Nardo. A review of the distribution of all Mediterranean Suberitidae is also presented, in which it is concluded that a further three species not represented in our material have been reported from the Eastern Mediterranean, viz. Laxosuberites ectyoninus, Prosuberites longispina, and P. epiphytum. Six suberitids reported from other parts of the Mediterranean so far have not been found in the Eastern Mediterranean