Papers by Elvira Matthaeis
Fundamental and Applied Limnology, 2000
Résumé/Abstract Allozymic variation at 15 enzymatic loci was studied in six populations of the st... more Résumé/Abstract Allozymic variation at 15 enzymatic loci was studied in six populations of the stygobiont isopod Stenasellus racovitzai. This species belongs to the exclusively stygobiont family Stenasellidae, characterised by morphological, ecological and biogeographical features indicating an extremely ancient separation from a presumed surface ancestor. Here we present allozymic data for six populations of S. racovitzai: two from Tuscany, two from Corsica and two from Sardinia. Levels of genetic divergence ...
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Journal of Crustacean Biology, 2010
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Trav. Inst. Scient., Rabat Sér. Gén, 2005
Abstract. A case study on the genetic divergence between North African and Polish populations of ... more Abstract. A case study on the genetic divergence between North African and Polish populations of the sandhopper Talitrus saltator is presented. We studied allozymic variation at 23 enzymatic loci and we sequenced a fragment (397 bp) of the mitochondrial gene encoding for subunit I of cytochrome oxidase (COI). Genetic divergence deduced from allozymes and mtDNA were not always consistent with each other. This partial incongruence is likely related to differences in the characteristics of the collecting sites and in the pattern ...
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Journal of Heredity, 1998
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Four populations of Troglophilus spinulosus from Crete, one population of T. lagoi from Rhodos an... more Four populations of Troglophilus spinulosus from Crete, one population of T. lagoi from Rhodos and one population of Dolichopoda paraskevi from Crete have been studied for genetic variation at 19 enzy- matic loci by electrophoresis. Three different levels of genetic divergence emerged: mean NeiÕs genetic dis- tance was 0.025 among T. spinulosus populations, 0.347 between T. spinulosus and T. lagoi
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Zoologica Scripta, 2003
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Molecular Phylogenetics and Evolution, 2004
We examined phylogenetic relationships in two lineages of Leuciscinae cyprinid fishes based on th... more We examined phylogenetic relationships in two lineages of Leuciscinae cyprinid fishes based on the sequence data of the complete mitochondrial DNA region coding for the cytochrome b gene (1140 bp). Telestes includes obligate riverine, moderately cold water-adapted species whereas Scardinius comprises warm-adapted species living in lowland lakes and still waters of rivers and streams. We also analysed selected representatives of Leuciscus and Phoxinellus because the taxonomic status of some species belonging to these genera is dubious and they could be placed in the genus Telestes. The study includes 18 species, 43 populations, and 111 individuals from 9 of the 14 peri-Mediterranean ichthyogeographic districts. Clades recovered from the phylogenetic analyses do not support previous taxonomic assumptions based on morphology. Telestes, Leuciscus, and Phoxinellus do not form monophyletic assemblages; phylogenetic analyses suggest that L. polylepis, L. turskyi, P. croaticus, and P. metohiensis should be included in Telestes. Similarly, populations of Scardinius erythrophthalmus do not cluster together and the endangered S. scardafa, endemic to central Italy and surviving in a single locality, is nested within them. The radiations of Telestes and Scardinius occurred in different time periods. A major diversification of Telestes is consistent with a sea dispersal during the freshwater Messinian "Lago Mare" phase of the Mediterranean Sea. Cladogenetic events within Scardinius are likely related to the extension and confluence of river drainages in lowlands following multiple lowering of the sea level during the Quaternary glaciations.
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Marine Biology, 2007
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Marine Biology, 2002
Genetic variation at 16 enzyme loci was analysed in 20 Mediterranean and 1 Baltic population of C... more Genetic variation at 16 enzyme loci was analysed in 20 Mediterranean and 1 Baltic population of Cerastoderma glaucum. Spatial genetic variation at different geographic scales was investigated. In general, this species was fairly genetically structured (over all loci Š= 0.088), according to the fragmentary nature of its habitat. Spatial structuring of genetic diversity was shown to follow different models, depending on the geographic scale considered: a stepping-stone model provided a good fit at a wide scale, with gene flow ...
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Journal of Zoology, 2005
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Journal of Zoological Systematics and Evolutionary Research, 2009
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Journal of Zoological Systematics and Evolutionary Research, 2003
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Journal of Evolutionary Biology, 1995
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Journal of Coastal Conservation, 2013
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Italian Journal of Zoology, 2003
Abstract Allozymic variation at 14 loci was studied in six Sardinian populations of the carabid b... more Abstract Allozymic variation at 14 loci was studied in six Sardinian populations of the carabid beetle Percus strictus. These populations represent the four subspecies of P. strictus recognised on morphological grounds in the island. Clustering and multivariate analyses were able to discriminate different subspecies, supporting the morphological evidence. Genetic distance data and. P‐sta‐tistics analysis indicated a certain degree of isolation among subspecies, but not high enough to propose the splitting of the polytypic F‐strictus ...
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Italian Journal of Zoology, 2002
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Papers by Elvira Matthaeis