Results 171 to 180 of about 1,130 (206)

A phylogenetic analysis of the Tubificinae (Oligochaeta, Tubificidae)

Canadian Journal of Zoology, 1991
The Tubificinae is a monophyletic taxon in relation to the outgroup Rhyacodrilus. A hypothetical ancestor with almost completely plesiomorphic character states was included in the analyses. It appears at the base of the taxon as expected when the outgroup is used for rooting, but is unresolved in relation to the genera Lymphachaeta and Peipsidrilus ...
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[Growth of Tubificidae in activated sludge].

Huan jing ke xue= Huanjing kexue, 2009
The growth of Tubificidae was investigated from juvenile to adult stage for 16 weeks by cultivating Tubificidae with activated sludge as substrate in batch tests at two different temperatures (20 degrees C and 25 degrees C), monitoring changes of body length and wet weight of Tubificidae.
Hui, Zhu, Yuan-Song, Wei, Jun-Xin, Liu
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A review of the marine Tubificidae (Oligochaeta) of North America

Canadian Journal of Zoology, 1979
Thirty-nine species of marine tubificids are reported here for North America, the list being compared to the known world fauna. Nine of the species are new to science, and several other species are redescribed, leading to revisions of genera and subfamilies.
R. O. Brinkhurst, H. R. Baker
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Review of the Phreodrilidae (Annelida: Oligochaeta: Tubificida) of Australia

Invertebrate Taxonomy, 1997
In this review of Australian phreodrilid oligochaetes, several descriptions are amended, some species are reclassified and additional distribution data are provided for most species. One new genus ( Nesodrilu s) and 11 new species ( Phreodrilus diemenensis , Phreodrilus melaleucensis , Phreodrilus mitodes , Antarctodrilus acanthaseta , Antarctodrilus ...
A. M. Pinder, R. O. Brinkhurst
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Cladistic analysis of the subfamilies within the Tubificidae (Oligochaeta)

Zoologica Scripta, 1990
A hypothesis of phylogenetic relationships within the family Tubificidae is presented, based on a Wagner analysis of morphological characters in the different subfamilies. Two major lincages are recognized. One, including the subfamilies Tubificinae, Telmatodrilinae and Limnodriloidinae, is supported by a synapomorphic ability to form slender ...
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A morphological reappraisal of Tubifex blanchardi Vejdovský, 1891 (Clitellata: Tubificidae)

Acta Zoologica, 2009
Abstract Tubifex blanchardi Vejdovský, 1891 is a freshwater tubificid, often living in sympatry with Tubifex tubifex (Müller 1774). Although considered from its discovery as a species on its own, its biological status is debated. During the early seventies T. blanchardi was reduced to a mere form of T.
Marotta, Roberto, Crottini, Angelica, Prada, Valeria, Ferraguti, Marco   +3 more
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The development of the genital ducts in Limnodriloidinae (Tubificidae, Clitellata)

Journal of Zoology, 2002
AbstractThe development of the male duct and spermatheca is studied in three species of the marine Limnodriloidinae (Tubificidae): Limnodriloides rubicundus; Tectidrilus bori; Thalassodrilides ineri. All tubificids are hermaphroditic with paired male ducts, female ducts and, as a rule, spermathecae.
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Ecology of Tidal Freshwater and Estuarine Tubificidae (Oligochaeta)

1980
There is an abrupt shift in the community composition of Tubificidae as one proceeds from tidal freshwater to estuarine habitats. Not only does the species composition change but also their relative trophic importance and, to a more variable degree, their importance to the community. Communities from tidal freshwater areas tend to resemble the fauna of
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Some Naididae and Tubificidae from Central Africa

Hydrobiologia, 1974
This first contribution to knowledge of Naididae and Tubificidae of Guatemala, El Salvador, and Nicaragua reports the occurrence of 17 forms. Of these, Nais communis, N. elinguis, N. pardalis, Dero digitata, Pristina longiseta, Limnodrilus hoffmeisteri and L.
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Life-cycle and karyology of Branchiura sowerbyi Beddard (Oligochaeta, Tubificidae)

Hydrobiologia, 1984
Data on the life-cycle of a population of Branchiura sowerbyi Beddard in a water-lily tank at the Botanical Garden in Padua are reported. The breeding period is from April to July, after which the reproductive system is partially resorbed (August-September) and reformed later in the autumn. The karyology of the species was also studied, and revealed 38
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