Results 171 to 180 of about 938 (210)

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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Studies on the effect of environmental factors on growth of tubificidae

2011 International Conference on Remote Sensing, Environment and Transportation Engineering, 2011
The effect of environmental factors such as life styles pH and DO and temperature on the growth of tubificidae were discussed base on L. hoffmeisteri. The experimental results indicated that attached growth system is superior than suspension growth system for Tubificidae. The average growth rate was 0.466 g.g−1 and −0.242 g.g−1 respectively after three
Juqing Lou, Maoxin Guo, null Meimei Chen
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A generic revision of the Phallodrilinae (Oligochaeta, Tubificidae)

Zoologica Scripta, 1992
The generic classification of the subfamily Phallodrilinae (with a total of 252 species) is revised according to phylogenetic principles. Morphological character patterns are assessed under the principle of maximum parsimony, but due to the poor resolution and instability in the resulting cladograms, the analysis is supplemented with intuitive ...
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Cuticular ultrastructure in some marine oligochaetes (Tubificidae)

Invertebrate Biology, 2000
Abstract. The ultrastructure of the thin, non‐cellular cuticle is described for 6 marine oligochaetes, representing 3 of the subfamilies (Phallodrilinae, Limnodriloidinae, and Rhyacodrilinae) of the Tubificidae. The main components of the cuticle in these 6 species, as in most other oligochaetes examined, are: (1) a fiber zone closest to the epidermis,
Lena M. Gustavsson, Christer Erséus
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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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The Production Biology of the Tubificidae (Oligochaeta)

1980
Few estimates of production of aquatic oligochaetes have been made. Those that have vary considerably in methodology, the units employed, the values obtained where these can be compared, and sometimes in the concept of production used. Laboratory studies on pure populations may be unreliable.
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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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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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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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