Consulta: subjectFacets:"Vicariance"
Registros recuperados: 18
Data/hora: 11/06/2024 11:13:23

Global biogeographical regions of freshwater fish species
Provedor de dados: 5
Autores: Leroy, Boris; Dias, Murilo S.; Giraud, Emilien; Hugueny, Bernard; Jézéquel, Céline; Leprieur, Fabien; Oberdorff, Thierry; Tedesco, Pablo A.
Aim To define the major biogeographical regions and transition zones for freshwater fish species. Taxon Strictly freshwater species of actinopterygian fish (i.e. excluding marine and amphidromous fish families). Methods We based our bioregionalization on a global database of freshwater fish species occurrences in drainage basins, which, after filtering, includes 11,295 species in 2,581 basins. On the basis of this dataset, we generated a bipartite (basin‐species) network upon which we applied a hierarchical clustering algorithm (the Map Equation) to detect regions. We tested the robustness of regions with a sensitivity analysis. We identified transition zones between major regions with the participation coefficient, indicating the degree to which a basin...
Tipo: Text
Palavras-chave: Actinopterygians; Biogeographical regions; Biogeography; Bioregionalization; Bioregions; Dispersal; Freshwater fish; Transition zones; Vicariance; Zoogeographical regions.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00514/62589/66985.pdf

Phylogeny and biogeography of midwife toads (Alytes, Discoglossidae): a rebuttal
Provedor de dados: 16
Autores: 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

On the discovery and origin of a Javan population of the Indochinese colubrid snake Dendrelaphis subocularis (Boulenger, 1888): a multivariate study
Provedor de dados: 16
Autores: 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

Systematics of the North American subterranean amphipod genus Bactrurus (Crangonyctidae)
Provedor de dados: 16
Autores: 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

Does biogeography have a future in a globalized world with globalized faunas?
Provedor de dados: 16
Autores: 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

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
Provedor de dados: 16
Autores: 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

Evolutionary scenarios for the origin of an Antarctic tardigrade species based on molecular clock analyses and biogeographic data
Provedor de dados: 16
Autores: 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

The Parotoplana jondelii species-group (Platyhelminthes: Proseriata): a microturbellarian radiation in the Mediterranean
Provedor de dados: 16
Autores: 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

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
Provedor de dados: 16
Autores: 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

Probable Mesozoic vicariance in the biogeography of Euphausiacea
Provedor de dados: 16
Autores: 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

On the origin and diversification of Venezuelan freshwater fishes: the genus Gephyrocharax (Ostariophysi: Characidae) a case study
Provedor de dados: 83
Autores: Bonilla-Rivero,Ana; López-Rojas,Héctor.
We conducted a phylogeographic analysis of the genus Gephyrocharaxin Venezuela to evaluate geomorphologic evidence for the formation of the country's main watersheds and to establish a biogeographical hypothesis of possible diversification mechanisms of the Neotropical freshwater fish fauna. We assayed eight enzyme systems and general proteins to estimate genetic variability (H, P), intraspecific structuring in several Gephyrocharax valencia and G. venezuelae populations (FIS, FIT, and FST), and a phylogenetic approach for the three species of Gephyrocharax in Venezuela, using Corynopoma riisei as the external group. Fourteen presumptive lociindicate that populations of the three species of Gephyrocharaxanalyzed show a clear genetic inter-specific...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isoenzymes; Speciation; Venezuela; Vicariance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000300487

Karyotype analysis of three species of Corydoras (Siluriformes: Callichthyidae) from southern Brazil: rearranged karyotypes and cytotaxonomy
Provedor de dados: 83
Autores: Barbosa,Patrícia; Pucci,Marcela B.; Nogaroto,Viviane; Almeida,Mara C.; Artoni,Roberto F.; Vicari,Marcelo R.
ABSTRACT The genus Corydoras comprises a diversity of species with different diploid numbers. We compared cytogenetic data among Corydoras species from different rivers of the Ponta Grossa Arch region in southern Brazil. Corydoras ehrhardti and C. aff. paleatus have a similar karyotype formula and the same diploid number (2n = 44). Corydoras lacrimostigmata has a higher diploid number, with 2n = 58 chromosomes. Fluorescence in situ hybridization using 5S and 18S ribosomal DNA probes suggests that these ribosomal DNA sequences are involved in chromosomal rearrangements in these Corydoras species. 5S rDNA is a chromosomal marker that is considered to be unique to the species analyzed in this study. Signals of interstitial telomeric sites are seen in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytosystematics; Heterokaryotypes; Karyotype description; RDNA; Vicariance.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100222

On the role of assumptions in cladistic biogeographical analyses
Provedor de dados: 84
Autores: Santos,Charles Morphy Dias dos.
The biogeographical Assumptions 0, 1, and 2 (respectively A0, A1 and A2) are theoretical terms used to interpret and resolve incongruence in order to find general areagrams. The aim of this paper is to suggest the use of A2 instead of A0 and A1 in solving uncertainties during cladistic biogeographical analyses. In a theoretical example, using Component Analysis and Primary Brooks Parsimony Analysis (primary BPA), A2 allows for the reconstruction of the true sequence of disjunction events within a hypothetical scenario, while A0 adds spurious area relationships. A0, A1 and A2 are interpretations of the relationships between areas, not between taxa. Since area relationships are not equivalent to cladistic relationships, it is inappropriate to use the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Assumption 2; Brooks Parsimony Analysis; Cladistic Biogeography; Component Analysis; Vicariance.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492011001900001

Morfo-anatomia comparada das folhas do par vicariante Plathymenia foliolosa Benth. e Plathymenia reticulata Benth. (Leguminosae - Mimosoideae)
Provedor de dados: 88
Autores: 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

A new species of Serracutisoma (Opiliones: Gonyleptidae: Goniosomatinae) from the coastal Atlantic Rain Forest of Paraná and São Paulo states, Brazil
Provedor de dados: 103
Autores: DaSilva,Marcio B.
Serracutisoma gnaspinii sp. nov. is described from the coastal Ombrophylous Dense Atlantic Rain Forest of Paraná and São Paulo states. It differs from other Serracutisoma by having a retrolateral row of spines on femur IV, a rounded white-mark on the carapace and a low dorsal apophysis on trochanter IV. It is likely the sister-species of S. proximum, and with it and other five species forms the S. proximum group, herein formally proposed. Given that the biologic, phylogenetic and biogeographic aspects of Serracutisoma have been studied, the implications of the discovery of a new species are discussed, for instance the evolution of male fight, aggregation and maternal care, traits that are shared with other species. The geographic range of Serracutisoma...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alpha and beta males; Biogeography; Territorial fights; Tropical Rain Forest; Vicariance.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000400008

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
Provedor de dados: 97
Autores: 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 &amp;amp; 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

Disjoint geographical distribution of intertidal and nearshore benthic invertebrates in the Southern Hemisphere
Provedor de dados: 97
Autores: 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

Distributional patterns and possible origin of leafhoppers (Homoptera, Cicadellidae)
Provedor de dados: 104
Autores: Nielson,Mervin W.; Knight,William J.
The zoogeographical distribution of 42 cicadellid subfamilies and their assigned tribes and genera is compiled with distributional maps and proposed dispersal pathways of genera that are shared interzoogeographically. Possible origin of the subfamilies and tribes is proposed in an ancestral context from which the more modern extant groups evolved whereas origin of genera is in a more modern context. Notwithstanding their complex biogeography, the distributional data of the higher groups indicate that all of the cosmopolitan and near cosmopolitan subfamilies arose during early Cretaceous or possibly the late Jurassic period (140-116 m.y.a.) when continental drift was in its early stages. Nearly all of the New World and some Old World subfamilies are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leafhoppers; Cicadellidae; Distribution; Dispersal; Vicariance; Origin; Classificaton; Habitats.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000100010