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Form variation in Puytoracia bergeri Bonnet and a description of P. bonneti n. sp. (Rhizopoda, Filosea).

Abstract：

:Since its description 35 years ago from Quebec, Canada, the poorly known monospecific testate rhizopod genus Puytoracia (type species, Puytoracia bergeri) has been reported only from the Himalayan region of Nepal. This species was recently found at 13 locations in Ontario, Canada, and the range of form variation of the species from widely separated sites is described. At two of these sites, boreal forest bogs in north-western Ontario, a second, previously unidentified, Puytoracia species was also found and described (as Puytoracia bonneti n. sp.). Differences between the two species were clearly demonstrated statistically using morphometric variables. The large elliptical scales covering the test of P. bonneti (easily seen with relatively low-power microscopy) provide the most important criterion for separating this species from some Trinema species having superficially similar test morphology (e.g. Trinema penardi Thomas & Chardez, or Trinema galeata (Penard) Jung.). On the basis of test structure, it is suggested that P. bonneti occupies a taxonomic position relative to P. bergeri that is similar to that occupied by T. penardi relative to Trinema enchelys (Ehr.) Leidy. Results of this study further confirm the logical position of Puytoracia within the family Trinematidae, close to, but distinct from, the genera Corythion and Trinema.

journal_name

Eur J Protistol

journal_title

European journal of protistology

authors

Nicholls KH

doi

10.1016/j.ejop.2006.04.002

subject

Has Abstract

pub_date

2006-09-01 00:00:00

pages

155-63

issue

3

eissn

0932-4739

issn

1618-0429

pii

S0932-4739(06)00020-4

journal_volume

42

pub_type

杂志文章

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