e-journal

Subterranean aquatic Oligochaeta

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1. Aquatic oligochaetes appear to be pre-adapted to live in the subterranean environment.
However, in the absence of genuine troglomorphic characters, the stygobiotic status of
groundwater oligochaetes can currently be inferred only from their exclusive presence in
the subterranean environment.
2. Aquatic oligochaetes constitute a diverse and mostly endemic fauna. Of the more than
100 species currently considered to be stygobionts, 60% are known only from their type
locality. In the Rhoˆne-Alpes region of France, about 93% of samples taken from caves and
galleries were found to contain oligochaetes of which 13 species are classified as
stygobionts.
3. Oligochaete biodiversity in aquatic subterranean environments probably originated by
both preservation of relict forms and speciation in situ, possibly followed by radiations
favoured by heterogeneous and fragmented habitats. Close phylogenetic affinities between
some tubificid species from continental waters and the deep sea suggest a marine origin of
part of the subterranean oligochaetes.
4. Oligochaetes are well known to promote bioturbation in surface habitats. Similar
information on subterranean oligochaetes is scarce, but some evidence suggests notable
bioturbation activity also of hypogean species, and they may also play other ecological
roles (e.g. as prey and consumers) where present in high densities.
5. Valuable studies to enhance knowledge of subterranean aquatic oligochaetes include
continued exploration of a variety of groundwater habitats, phylogeographic surveys that
take advantage of molecular methods, analyses of species traits of both stygobiotic and
epigean oligochaetes in subterranean environments, and laboratory studies to describe life
histories and resolve other aspects of oligochaete biology and ecology.

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Informasi Detail

Judul Seri

Freshwater Biology

No. Panggil

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Penerbit

New York : Blackwell Publishing Ltd., 2009

Deskripsi Fisik

Freshwater Biology(2009)54,678–690

Bahasa

English

ISBN/ISSN

doi:10.1111/j.1365-2

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

(2009) 54

Subjek

Freshwater Biology

Info Detail Spesifik

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Pernyataan Tanggungjawab

deliza

Versi lain/terkait

Lampiran Berkas

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