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Registros recuperados: 12
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Disjoint geographical distribution of intertidal and nearshore benthic invertebrates in the Southern Hemisphere RChHN
CASTILLA,JUAN C; GUIÑEZ,RICARDO.
Biogeographical explanations for the extant and paleo disjoint geographical distribution in the southern hemisphere of five species of nearshore marine benthic invertebrates: Gaimardia trapesina, Ostrea chilensis, Pyura stolonifera taxonomic complex, Aulacomya ater and Concholepas concholepas, showing distinctive reproductive strategies and early life history characteristics are reviewed and analyzed. Through the use of published and new information we contrasted the following hypotheses: a) vicariance-historical process, b) epiplanktonic larval dispersal, c) juvenile/adult dispersal through rafting and d) planned or accidental anthropogenic dispersal mechanisms. The juvenile/adult transoceanic dispersal hypothesis by rafting was the only one impossible to...
Tipo: Journal article Palavras-chave: Paleobiogeography; Vicariance; Larval dispersal; Rafting; Anthropogenic dispersal; Bivalves; Gastropods; Tunicates; Invertebrates; Nearshore; Southern hemisphere.
Ano: 2000 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000400004
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Does biogeography have a future in a globalized world with globalized faunas? Naturalis
Schram, F.R..
The study of biogeography was once a pillar of evolution science. Both Darwin and especially Wallace found great inspiration from the consideration of animal distributions. However, what is to happen to this discipline in a time of global trade, mass movement of people and goods, and the resulting globalization of the planet’s biota? Can we still hope to delve into the fine points of past geography as it affected animal and plant evolution? Maybe we can, but only with careful study of life forms that suffer minimal affects – at present – from globalization, viz., marginal faunas of quite inaccessible environments. Two examples taken from syncarid crustaceans illustrate this point. Bathynellacea provide insight into ancient patterns of distribution and...
Tipo: Article / Letter to the editor Palavras-chave: Anaspidacea; Bathynellacea; Globalization; Historical biogeography; Vicariance; 42.74.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/280481
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Evolutionary scenarios for the origin of an Antarctic tardigrade species based on molecular clock analyses and biogeographic data Naturalis
Guidetti, R.; McInnes, S.J.; Cesari, M.; Rebecchi, L.; Rota-Stabelli, O..
The origin of the Antarctic continental extant fauna is a highly debated topic, complicated by the paucity of organisms for which we have clear biogeographic distributions and understanding of their evolutionary timescale. To shed new light on this topic, we coupled molecular clock analyses with biogeographic studies on the heterotardigrade Mopsechiniscus genus. This taxon includes species with endemic distributions in Antarctica and other regions of the southern hemisphere. Molecular dating using different models and calibration priors retrieved similar divergence time for the split between the Antarctic and South American Mopsechiniscus lineages (32–48 Mya) and the estimated age of the Drake Passage opening that led to the separation of Antarctica and...
Tipo: Article / Letter to the editor Palavras-chave: Gondwana historical biogeography Last Glacial Maximum molecular clock dating; Vicariance.
Ano: 2017 URL: http://www.repository.naturalis.nl/record/630170
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Historical biogeographic analysis of the family Fanniidae (Díptera: Calyptratae), with special reference to the austral species of the genus Fannia (Diptera: Fanniidae) using dispersal-vicariance analysis RChHN
DOMÍNGUEZ,M. CECILIA; ROIG-JUÑENT,SERGIO A.
The purpose of this study was to achieve a hypothesis explaining the biogeographical history of the family Fanniidae, especially that of the species from Patagonia, the Neotropics, Australia, and New Zealand. We used "dispersal-vicariance analysis" (DIVA), an event-based parsimony method, to analyze the most parsimonious phylogenetic hypothesis for the family, obtained by Domínguez & Roig-Juñent (2008). The analysis resulted in 32800 alternative equally optimal reconstructions that indicate that the ancestor of the Fanniidae was widely distributed across different regions of the world, which along with the subsequent separation of two clades that correspond to the Laurasic and Gondwanan Landmasses allow the proposal of an older age than in previous...
Tipo: Journal article Palavras-chave: Age of Fanniidae; Dispersal; DIVA; Gondwana; Vicariance.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000100005
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Morfo-anatomia comparada das folhas do par vicariante Plathymenia foliolosa Benth. e Plathymenia reticulata Benth. (Leguminosae - Mimosoideae) Rev. Bras. Bot.
Mendes,Irene da Costa A.; Paviani,Therezinha Isaia.
(Morfo-anatomia comparada das folhas do par vicariante Plathymenia foliolosa Benth. e Plathymenia reticulata Benth. (Leguminosae-Mimosoideae)). Folhas bipinadas adultas de P. foliolosa e P. reticulata da mata (Minas Gerais) e do cerrado (Distrito Federal) respectivamente, foram estudadas, sob o ponto de vista comparativo, quanto à morfologia externa e à anatomia. Todas as partes foliares foram examinadas sob microscopia óptica, em luz normal e em luz polarizada. Os folíolos de P. reticulata são maiores que os de P. foliolosa. A organização do sistema vascular é semelhante nas duas espécies. Em P. reticulata, os estômatos estão no mesmo nível ou levemente depressionados em relação às demais células epidérmicas e, em P. foliolosa, estas estruturas mostram...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plathymenia; Ecological anatomy; Leaves; Vicariance.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041997000200009
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New perspectives on the evolution of the genus Typhlatya (Crustacea, Decapoda): first record of a cavernicolous atyid in the Iberian Peninsula, Typhlatya miravetensis n. sp Naturalis
Sanz, Sebastián; Platvoet, Dirk.
On several occasions, shrimps belonging to a new species of the genus Typhlatya were collected in a cave in the province of Castellón, Spain. This is the first record of the genus in the Iberian Peninsula. The species is described and the validity, distribution, and zoogeography of the genus, as well as the status of the genus Spelaeocaris, are discussed. Former models for the evolution of the genus Typhlatya and its genus group are reviewed, as well as the system of inner classification of the Atyidae and its biogeographical meaning. For the age and evolution of the genus we developed a new model based on vicariance principles that involves further evolution of each species after the disruption of the ancestral range. This allows new estimations for the...
Tipo: Article / Letter to the editor Palavras-chave: Typhlatya; Decapoda; Spain; Subterranean waters; Systematics; Zoogeography; Vicariance; Evolution; Key to genus.
Ano: 1995 URL: http://www.repository.naturalis.nl/record/503881
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On the discovery and origin of a Javan population of the Indochinese colubrid snake Dendrelaphis subocularis (Boulenger, 1888): a multivariate study Naturalis
Rooijen, J. van; Vogel, G..
The colubrid snake Dendrelaphis subocularis is distributed throughout Indochina, the southern limit of its range corresponding with the Isthmus of Kra, an important biogeographic barrier that separates the Indochinese biota from the Sundaic biota. This study presents five museum specimens that represent a hitherto unknown population that inhabits the Sundaic island Java. Thus, the distribution of Dendrelaphis subocularis is disjunct, with the Javan population being isolated by 2000 kilometres from the nearest mainland population. Principal Components Analysis was applied to morphological data taken from the five Javan specimens as well as from 26 museum specimens of Indochinese origin. Regression analysis of the spatial pattern of the resulting scores...
Tipo: Article / Letter to the editor Palavras-chave: Indochina; Java; Sweepstake dispersal; Taxonomy; Vicariance; 42.82.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/349893
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Phylogeny and biogeography of midwife toads (Alytes, Discoglossidae): a rebuttal Naturalis
Arntzen, J.W.; García-París, M..
Three competing phylogenetic hypotheses for the genus Alytes (midwife toads) are evaluated. Based on quantitative coding of protein characters the most parsimonious solution shows a sister taxon relationship for Alytes dickhilleni and A. muletensis. The alternatives in which A. obstetricans has its sister group in either A. dickhilleni or A. muletensis lack support. Using calibrations derived from protein evolutionary rates, the vicariant events giving rise to A. obstetricans and the lineage leading to the A. muletensis and A. dickhilleni clade and the subsequent splitting between A. muletensis and A. dickhilleni cannot be placed much earlier than the Miocene-Pliocene boundary. Biogeographical scenarios invoking an earlier time of divergence should be...
Tipo: Article / Letter to the editor Palavras-chave: Allozymes; Alytes; Biogeography; Midwife toads; Phylogenetics; Spain; Taxonomy; Vicariance.
Ano: 1997 URL: http://www.repository.naturalis.nl/record/504096
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Probable Mesozoic vicariance in the biogeography of Euphausiacea Naturalis
Spoel, S. van der; Pierrot-Bults, A.C.; Schalk, P.H..
The worldwide distribution of Euphausiacea is related to differences in character states found in the genera belonging to this order. An area cladogram is composed. The vicariant events postulated in this study made it possible to distinguish between different “hydroplates” of the “hydrotectonic (cf. Nelson, 1986) system” on the basis of general trends in distribution of these genera.
Tipo: Article / Letter to the editor Palavras-chave: Euphausiacea; Biogeography; Vicariance.
Ano: 1990 URL: http://www.repository.naturalis.nl/record/504564
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Systematics of the North American subterranean amphipod genus Bactrurus (Crangonyctidae) Naturalis
Koenemann, Stefan; Holsinger, John R..
Bactrurus Hay is a relatively small generic group that inhabits caves and related groundwater habitats in parts of eastern and central USA. Two field trips, conducted in the spring of 1999, yielded important new locality records that give us a better knowledge of the distribution of the genus. The examination of fresh samples as well as older collection material has resulted in descriptions of four new species. Based on these descriptions and redescriptions of three previously known species, the taxonomy of the genus is revised. In addition, a phylogenetic analysis using morphological data is employed to examine the relationship of Bactrurus to 12 selected crangonyctid taxa, including its potential sister genus Stygobromus Cope. Five epigean and hypogean...
Tipo: Article / Letter to the editor Palavras-chave: Biogeography; Vicariance; Phylogenetic reconstruction; Taxonomic revision; Cladistic analysis; Groundwater; Stygobiont; Amphipoda.
Ano: 2001 URL: http://www.repository.naturalis.nl/record/504698
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The Parotoplana jondelii species-group (Platyhelminthes: Proseriata): a microturbellarian radiation in the Mediterranean Naturalis
Delogu, V.; Curini-Galletti, M..
Seven new Parotoplana species (Proseriata: Otoplanidae) from the Mediterranean, belonging to the P. jondelii complex, are described. They are characterized by the presence of numerous (14-22) copulatory spines. These are characteristically broad, and arranged in a girdle around the distal portion of the ejaculatory duct. In most species, dorsal and ventral spines are distinctly different from the rest of the spines of the girdle. This morphology of the copulatory spines is apomorphic for the genus Parotoplana, and supports a close relationship among these species. The new species (P. axi sp. n., P. crassispina sp. n., P. carthagoensis sp. n., P. gracilispina sp. n., P. ichnusae sp. n., P. obtusispina sp. n., P. pulchrispina sp. n.) are distinguished by...
Tipo: Article / Letter to the editor Palavras-chave: Biodiversity; Meiofauna; New species; Parotoplana; Taxonomy; Vicariance; 42.76.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/316129
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The phylogeny of crested newts (Triturus cristatus superspecies): nuclear and mitochondrial genetic characters suggest a hard polytomy, in line with the paleogeography of the centre of origin Naturalis
Arntzen, J.W.; Themudo, G. Espregueira; Wielstra, B..
Newts of the genus Triturus (Amphibia, Caudata, Salamandridae) are distributed across Europe and adjacent Asia. In spite of its prominence as a model system for evolutionary research, the phylogeny of Triturus has remained incompletely solved. Our aim was to rectify this situation, to which we employed nuclear encoded proteins (40 loci) and mitochondrial DNA-sequence data (mtDNA, 642 bp of the ND4 gene). We sampled up to four populations per species covering large parts of their ranges. Allozyme and mtDNA data were analyzed separately with parsimony, distance, likelihood and Bayesian methods of phylogenetic inference. Existing knowledge on taxonomic relationships was confirmed, including the monophyly of the genus and the groups of crested newts (four...
Tipo: Article / Letter to the editor Palavras-chave: Allozymes; Historical biogeography; Mitochondrial DNA-sequences; Triturus macedonicus; Triturus marmoratus; Vicariance; 42.82.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/262648
Registros recuperados: 12
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