Evolution in Hawiian cave adapted isopods (Oniscidea: Philosciidae): vicariant speciation or adaptive shifts? (Articolo in rivista)

Type
Label
  • Evolution in Hawiian cave adapted isopods (Oniscidea: Philosciidae): vicariant speciation or adaptive shifts? (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/S1055-7903(02)00353-6 (literal)
Alternative label
  • Rivera, M.A., Howarth, F.G., Taiti, S., Roderick, G.K. (2002)
    Evolution in Hawiian cave adapted isopods (Oniscidea: Philosciidae): vicariant speciation or adaptive shifts?
    in Molecular phylogenetics and evolution (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Rivera, M.A., Howarth, F.G., Taiti, S., Roderick, G.K. (literal)
Pagina inizio
  • 1 (literal)
Pagina fine
  • 9 (literal)
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  • 25 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • In questo lavoro vengono investigate le ipotesi di evoluzione degli organismi cavernicoli in area tropicale attraverso l'analisi del DNA mitocondriale negli Isopodi terrestri (fam. Philosciidae) delle isole Hawaii. In particolare viene confrontata l'ipotesi dei relitti climatici con quella del cambiamento adattativo (\"adaptive shift\"). Questo lavoro รจ il primo ad analizzare le relazioni filogenetiche fra artropodi di superficie e cavernicoli alle isole Hawaii e mette in evidenza come la semplice speciazione allopatrica, tipica delle aree temperate, sia insufficiente a spiegare l'evoluzione delle forme troglobie in zone tropicali (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Rivera, M.A., Roderick, G.K.: University of California, Berkeley Howarth, F.G.: Bishop Museum Honolulu (literal)
Titolo
  • Evolution in Hawiian cave adapted isopods (Oniscidea: Philosciidae): vicariant speciation or adaptive shifts? (literal)
Abstract
  • We assessed evolutionary relationships among Hawaiian cave-adapted isopods using a maximum-likelihood criterion to analyze cytochrome oxidase I nucleotide sequences. Results support morphological data that two genera of philosciid isopods have invaded caves independently in the islands. In the genus Littorophiloscia,a sister relationship between a surface-dwelling species, L. hawaiiensis, and an undescribed cave species was corroborated. This evidence,along with the known parapatric distributions between species,supports a speciation event by an adaptive shift on the island of Hawaii from a marine littoral to a terrestrial subterranean habitat. The monophyletic genus Hawaiioscia contains four known obligate cave-dwelling species,each of which occurs on a separate island. However,despite present-day allopatric distributions between Hawaiioscia species,the geographic and phylogenetic patterns are not sufficient to support a vicariant mode of speciation. Instead,we believe that the known species of Hawaiioscia evolved from a widespread ancestral surface species or a group of closely related species through multiple,independent adaptive shifts on each of the islands of Kauai,Oahu,Molokai,and Maui. This is the first molecular investigation of evolutionary relationships between surface-dwelling and cavernicolous arthropods in Hawaii and it suggests that simple vicariance is insufficient to explain the evolution of troglobites in tropical zones. (literal)
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