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Registros recuperados: 5
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Genetic differentiation, origin and dispersal of Gammarus gauthieri from the Iberian peninsula and North Africa (Crustacea, Amphipoda) Naturalis
Scheepmaker, Maarten.
Genetic differentiation among population samples of G. gauthieri on both sides of the Strait of Gibraltar was investigated by enzyme electrophoresis at 20 enzyme loci with reference to G. gauthieri and G. ibericus from different areas in the Iberian peninsula. Levels of divergence resolved suggest that G. gauthieri reached North Africa from the Iberian peninsula, and not vice versa. With reference to geological evidence, this was likely to occur during the Messinian (6—5 My ago). As the opening of the Strait of Gibraltar represents a well dated geological event, an attempt has been made to calibrate the molecular clock for the G. pulex-group. Indirect estimations of gene flow levels were shown to be extremely low. Probably as a consequence of frequently...
Tipo: Article / Letter to the editor Palavras-chave: Distribution; Genetic divergence; Gene flow; Molecular clock; Gammarus.
Ano: 1990 URL: http://www.repository.naturalis.nl/record/503962
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Genetic diversity and geographic structure in Aglaia elaeagnoidea (Meliaceae, Sapindales), a morphologically complex tree species, near the two extremes of its distribution Naturalis
Muellner, A.N.; Greger, H.; Pannell, C.M..
Aglaia elaeagnoidea is the most widespread and one of the more morphologically diverse complex species in the largest genus of the mahogany family (Meliaceae, Sapindales). We performed maximum parsimony, maximum likelihood and Bayesian analyses (nuclear ITS rDNA) to estimate genetic relations among samples of Aglaia elaeagnoidea, and their phylogenetic position within Aglaia (more than 120 species in Indomalesia, Australasia, and the Pacific islands). Based on 90 accessions of Melioideae (ingroup) and four taxa of Cedreloideae (outgroup), this study 1) provides a first assessment of the genetic diversity of Aglaia elaeagnoidea; 2) investigates the geographic structure of the data in selected eastern and western regions of its distribution; and 3) suggests...
Tipo: Article / Letter to the editor Palavras-chave: Aglaia; Biogeography; Dispersal; Internal transcribed spacer (ITS); Meliaceae; Molecular clock; Sapindales.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/525711
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Historical biogeography of the Fanniidae (Insecta, Diptera): A commentary on the age of the family RChHN
LOWENBERG-NETO,PETER; HASEYAMA,KIRSTERN L.F.; DE CARVALHO,CLAUDIO J.B..
In a study on Fanniidae biogeography, Dominguez & Roig-Juñent (2011) argued that the family had a Pangeic origin, Late Jurassic/early Cretaceous (~146 Ma). However, recent literature on Diptera supports that Schizophora radiation occurred during Cenozoic. Fanniidae is a widespread taxon and it was interpreted under the maximum vicariance paradigm; the consequence was an analysis with no alternative hypothesis, but Pangeic origin. We verified that Fanniidae historical narrative was incongruent with the Gondwana sequential break-up. A second analysis, assuming the Fanniidae origin during early Paleocene (65 Ma), showed congruence with recent geological events and with the Muscidae diversification, a closely related Muscoidea family. Our hypothesis...
Tipo: Journal article Palavras-chave: BPA; DIVA; Molecular clock; TreeFitter.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000300007
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Molecular and karyotypic phylogeography in the Neotropical Hoplias malabaricus (Erythrinidae) fish in eastern Brazil. Repositório Alice
SANTOS, U.; VOLCKERT, C. M.; BELEI, F. A.; CIOFFI, M. B.; BERTOL, L. A. C.; PAIVA, S. R.; DERGAM, J. A..
bitstream/item/178630/1/SP-19908-ID-32665.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Molecular clock; MtDNA; South America; Freshwater fish.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/783670
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Molecular phylogenetic analyses reveal a close evolutionary relationship between Podosphaera (Erysiphales: Erysiphaceae) and its rosaceous hosts Naturalis
Takamatsu, S.; Niinomi, S.; Harada, M.; Havrylenko, M..
Podosphaera is a genus of the powdery mildew fungi belonging to the tribe Cystotheceae of the Erysiphaceae. Among the host plants of Podosphaera, 86 % of hosts of the section Podosphaera and 57 % hosts of the subsection Sphaerotheca belong to the Rosaceae. In order to reconstruct the phylogeny of Podosphaera and to determine evolutionary relationships between Podosphaera and its host plants, we used 152 ITS sequences and 69 28S rDNA sequences of Podosphaera for phylogenetic analyses. As a result, Podosphaera was divided into two large clades: clade 1, consisting of the section Podosphaera on Prunus (P. tridactyla s.l.) and subsection Magnicellulatae; and clade 2, composed of the remaining member of section Podosphaera and subsection Sphaerotheca. Because...
Tipo: Article / Letter to the editor Palavras-chave: 28S rDNA; Evolution; ITS; Molecular clock; Phylogeny; Powdery mildew fungi; Rosaceae.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/532391
Registros recuperados: 5
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