Vertical and Horizontal Worldwide distribution of Vestimentifera (Annelida: Siboglinidae).

Vestimentifera is the group of deep-sea tube-worms, which recently was placed into Annelida. This worms live on hard and soft chemosynthetic habitats, such as hot vents, mud volcanoes, seeps or whale bones. We have summarized all available published data and collection data and made the data base of Vestimentiferan distribution. Data analysis shows, that Vestimentifera distributed into wide range of depth from shelf to the upper abyss. Maximum amount of species are into range of depth 1000-2700 m (12 out of 18 species). Evaluation of bathymetrical distribution allows us to decide, that “Lamellibrachidae” is most eurybathic among Vestimentifera. Specimens of Lamellibrachia occurs on different depths from 82 to 3200 m. The most shallower species is Lamellibrachia satsuma Miura et al., 1997, which is found on depth 82 m (Miura et al., 1997). Members of “Escarpiidae” group inhabit depth of slope and upper abyss (from 500 to 3300 m). Both “Lamellibrachidae” and “Escarpiidae” inhabits methane seeps and sites of diffusive flow, while hydrothermal group “Tevniidae” – are mostly deep-sea. Members of “Tevniidae” occurs below 1500 m. It is remarkable, that the most variance of depth among “Tevniidae” is mentioned for R. piscesae, which inhabits depths from 1500 to 3300 m. One species is stand out the other “Tevniidae”, it is Alaysia spiralis, which differs from rest “Tevniidae” as by morphological data and so by bathymetry. The upper limit of distribution is 750 m. Biogeographical distribution shows us, that hydrothermal Vestimentifera “Tevniidae” inhabit Pacific ocean only. What about “Escarpiidae” and “Lamellibrachiidae”, they inhabit sites inside the Pacific and Atlantic oceans. But it is conjectural, that both groups have Pacific origin. Hypothetical way of “Lamellibrachiidae” into Atlantic ocean could be through Sea of Tethys and through the strait on the place of Mesoamerica. The last variant is more possible for introduction of “Escarpiidae”.

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First Name: 
Nadezda
Last Name: 
Karaseva
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+74959395695
Affiliation: 
Lomonosov Moscow State University
First Name: 
Nadezda
Last Name: 
Rimskaya-Korsakova
Affiliation: 
Lomonosov Moscow State University
First Name: 
Vladimir
Last Name: 
Malakhov
Affiliation: 
Lomonosov Moscow State University
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Biogeography
Abstract ID: 
CBE5-107