Reevaluation of cortical developmental patterns in Euplotes (s. l.), including a morphogenetic redescription of E. charon (Protozoa, Ciliophora, Euplotida)

Chen Shao; Honggang Ma; Shan Gao; Al-Rasheid A. Khaled; Weibo Song

doi:10.1007/s00343-010-9128-9

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Reevaluation of cortical developmental patterns in Euplotes (s. l.), including a morphogenetic redescription of E. charon (Protozoa, Ciliophora, Euplotida)

OriginalPaper | Updated：2023-05-16

- Reevaluation of cortical developmental patterns in Euplotes (s. l.), including a morphogenetic redescription of E. charon (Protozoa, Ciliophora, Euplotida)
- Reevaluation of cortical developmental patterns in Euplotes (s. l.), including a morphogenetic redescription of E. charon (Protozoa, Ciliophora, Euplotida)
- 海洋湖沼学报（英文） 2010年28卷第3期页码：593-602
- Affiliations：
  
  1. Laboratory of Protozoology Institute of Evolution and Marine Biodiversity Ocean University of China
  2. Zoology Department King Saud University
- Author bio：
- Funds：
  
  Supported by the Natural Science Foundation of China (No. 40906065), the China Postdoctoral Science Foundation (No. 20090451351), and a grant from the Center of Excellence in Biodiversity, King Saud University
- DOI：10.1007/s00343-010-9128-9
  中图分类号：
- 网络首发：2010-05-20，
  
  纸质出版：2010
- Accepted：
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Reevaluation of cortical developmental patterns in Euplotes (s. l.), including a morphogenetic redescription of E. charon (Protozoa, Ciliophora, Euplotida)[J]. 海洋湖沼学报（英文）, 2010,28(3):593-602.

Shao, C., Ma, H., Gao, S. et al. Reevaluation of cortical developmental patterns in Euplotes (s. l.), including a morphogenetic redescription of E. charon (Protozoa, Ciliophora, Euplotida)., Chin. J. Ocean. Limnol. 28, 593–602 (2010). https://doi.org/10.1007/s00343-010-9128-9
Reevaluation of cortical developmental patterns in Euplotes (s. l.), including a morphogenetic redescription of E. charon (Protozoa, Ciliophora, Euplotida)[J]. 海洋湖沼学报（英文）, 2010,28(3):593-602. DOI： 10.1007/s00343-010-9128-9.

Shao, C., Ma, H., Gao, S. et al. Reevaluation of cortical developmental patterns in Euplotes (s. l.), including a morphogenetic redescription of E. charon (Protozoa, Ciliophora, Euplotida)., Chin. J. Ocean. Limnol. 28, 593–602 (2010). https://doi.org/10.1007/s00343-010-9128-9 DOI：

摘要

Abstract

We documented the pattern of cell development in Euplotes charon. The ontogenesis of this species was similar to many of its congeners

except for the formation of the caudal cirri. In E. Charon

a caudal cirrus is formed posterior to each of the rightmost two or three dorsal kinety anlage in the proter

and the second rightmost dorsal kinety in the opisthe. In addition

two caudal cirri are formed posterior to the rightmost dorsal kinety in the opisthe. This pattern of development represents a completely new type. Based on our evaluation

and in comparison with previous studies

we also conclude that the pattern of cell development is variable among species in the Euplotes genera. The variation is particularly evident during the formation of frontoventral and caudal cirri. Based on the segmentation pattern of frontal-midventral transverse cirral anlagen

cirri reduction

and migration of frontoventral cirri

we identified five types: the affinis-type

the eurystomus-type

the charon-type

the raikovi-type and orientalis-type. Euplotes (s. l.) can also be divided into three types based on the formation of caudal cirri: focardii-type

vannus-type and charon-type. Indeed

we conclude that the number (one or two) of marginal cirri should be given as much consideration as the genetic separation. Given this

we reassessed the validity of using genetic separation to classify the group. Generally

the morphogenetic data disagreed with the molecular data (SSrRNA gene sequences). Given these discrepancies

it is too early to draw conclusions on the systematic arrangement of this species-rich taxon.

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references

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