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Female size shows similar trends in all clades of the phylum Nematoda

Female size shows similar trends in all clades of the phylum Nematoda AbstractTo seek unifying principles underlying adult body size in the phylumNematoda, the volume of females of 3150 nematode species in 186 genera hasbeen calculated from published length and diameter information; genera aregrouped using the rDNA-based clades of De Ley et al. While the mass offemales in some of the clades overlap, there are usually distinctdifferences within any particular clade between those nematodes that existin living substrates and those that do not, the latter invariably beingsmaller. In all five clades (but not Chromadorida) the ability for femalesto achieve relatively great size is normal, but diminutive females are knownfrom most clades and habitats. Bacterial feeding is common in females innon-living substrates and related females in living substrates, which mayrepresent alternate generations, are often larger. If both groups of femalesare bacterial feeding it would help to understand the conundrum of whetherthose in living substrates are larger because they utilise better physicalconditions or are larger because they are required to produce morepropagules. Female body volume has previously been successfully used inzoogeography and further investigations may include not only adult volumebut also address the question of stage-to-stage growth for which earlierstudies revealed a paucity of data. This survey of the phylum has not beencontrolled for phylogeny, apart from the use of clades, and detailed studiescould be made within clades. In particular, the effect of substrate,controlled through using species with alternate life cycles, should betractable. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematology Brill

Female size shows similar trends in all clades of the phylum Nematoda

Yeates, Gregor W.; Boag, Brian
Nematology , Volume 8 (1): 17 – Jan 1, 2006
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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
1388-5545
eISSN
1568-5411
DOI
10.1163/156854106776179881
Publisher site
See Article on Publisher Site

Abstract

AbstractTo seek unifying principles underlying adult body size in the phylumNematoda, the volume of females of 3150 nematode species in 186 genera hasbeen calculated from published length and diameter information; genera aregrouped using the rDNA-based clades of De Ley et al. While the mass offemales in some of the clades overlap, there are usually distinctdifferences within any particular clade between those nematodes that existin living substrates and those that do not, the latter invariably beingsmaller. In all five clades (but not Chromadorida) the ability for femalesto achieve relatively great size is normal, but diminutive females are knownfrom most clades and habitats. Bacterial feeding is common in females innon-living substrates and related females in living substrates, which mayrepresent alternate generations, are often larger. If both groups of femalesare bacterial feeding it would help to understand the conundrum of whetherthose in living substrates are larger because they utilise better physicalconditions or are larger because they are required to produce morepropagules. Female body volume has previously been successfully used inzoogeography and further investigations may include not only adult volumebut also address the question of stage-to-stage growth for which earlierstudies revealed a paucity of data. This survey of the phylum has not beencontrolled for phylogeny, apart from the use of clades, and detailed studiescould be made within clades. In particular, the effect of substrate,controlled through using species with alternate life cycles, should betractable.

Journal

Nematology – Brill

Published: Jan 1, 2006

Keywords: VOLUME; NEMATODE; EXPONENTIAL; UNIFYING PRINCIPLES; PARASITE; BIOMASS

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