Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Molecular taxonomy confirms morphological classification of deep-sea hydrothermal vent copepods (Dirivultidae) and suggests broad physiological tolerance of species and frequent dispersal along ridges |
| Abstract | Dirivultid copepods are among the most successful organisms at deep-sea hydrothermal vents, as this family includes 50 morphologically described species. We studied COI diversity of some species in various geographical areas and vent fluid regimes, in order to gain a better understanding of true species diversity, dispersal strategies, and evolution. DNA taxonomy revealed the same entities as described with morphological characters. No cryptic species were detected. With the help of COI analyses, it was possible to identify a new species and match the dimorphic sexes of another species. The geographical distance between vents, as well as the extreme physico-chemical environment, are thought to affect the gene flow of fauna. We could not detect any sequence differences within species among different geographical scales (up to 2,000 km) or different vent fluid regimes. We suggest that Dirivultidae have relatively high gene flow between vents and are able to disperse relatively easy along ridges. Further, they have a broad physiological tolerance and thus might not have undergone speciation in response to heterogeneity caused by vent fluids. |
| Source | Marine biology (Berl.) 158 (1), pp. 221–231 |
| Journal | Marine biology (Berl.) |
| Editor | Springer, Heidelberg ;, Germania |
| Year | 2011 |
| Type | Articolo in rivista |
| DOI | 10.1007/s00227-010-1553-y |
| Authors | Gollner, Sabine; Fontaneto, Diego; Arbizu, Pedro Martinez |
| Text | 283521 2011 10.1007/s00227 010 1553 y ISI Web of Science WOS 000285783700017 Molecular taxonomy confirms morphological classification of deep sea hydrothermal vent copepods Dirivultidae and suggests broad physiological tolerance of species and frequent dispersal along ridges Gollner, Sabine; Fontaneto, Diego; Arbizu, Pedro Martinez Forschungsinst Senckenberg; Swedish Museum Nat Hist; Imperial College London Dirivultid copepods are among the most successful organisms at deep sea hydrothermal vents, as this family includes 50 morphologically described species. We studied COI diversity of some species in various geographical areas and vent fluid regimes, in order to gain a better understanding of true species diversity, dispersal strategies, and evolution. DNA taxonomy revealed the same entities as described with morphological characters. No cryptic species were detected. With the help of COI analyses, it was possible to identify a new species and match the dimorphic sexes of another species. The geographical distance between vents, as well as the extreme physico chemical environment, are thought to affect the gene flow of fauna. We could not detect any sequence differences within species among different geographical scales up to 2,000 km or different vent fluid regimes. We suggest that Dirivultidae have relatively high gene flow between vents and are able to disperse relatively easy along ridges. Further, they have a broad physiological tolerance and thus might not have undergone speciation in response to heterogeneity caused by vent fluids. 158 Articolo in rivista Springer 0025 3162 Marine biology Berl. Marine biology Berl. Mar. biol. Berl. Marine biology. Berl. Marine biology Berlin. Print Berl. diego.fontaneto FONTANETO DIEGO |