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Table 2 Morphogenesis comparisons of Gastrostyla-like species

From: The insights into the systematic relationship of Gastrostyla-affinitive genera, with report on a new saline soil ciliate genus and new species (Protozoa, Ciliophora)

Charactera

Heterogastrostyla salina nov. gen., nov. spec.

Neogastrostyla aqua

Gastrostyla spp.

Hemigastrostyla paraenigmatica

Hemigastrostyla enigmatica

Apogastrostyla rigescens

Protogastrostyla pulchra

Parental AZM

Completely retained

Completely retained

Completely retained

Only apical part retained

Only apical part retained

Only apical part retained

Only apical part retained

FVTA

Primary primordia

Primary primordia?

Secondary primordia

Primary primordia

Primary primordia

Primary primordia

Primary primordia

Anlage V contribute PTVC

Yes

No

Yes

Yes

Yes

Yes

Yes

RMA

Intrakinetally

Intrakinetally

Intrakinetally

De novo

De novo

De novo

De novo

LMA

Intrakinetally

Intrakinetally

Intrakinetally

Intrakinetally

De novo

Intrakinetally

Intrakinetally in proter and/or de novo in opisthe (?)

RMA anterior part differentiated into paired basal bodies, which then become dorsomarginal row

Yes

No

No

Yes

No

No

Yes

Formation of extra cirri

No

No

No

Yes

Yes

Yes

No

DKA

Likely primary primordia

Secondary primordia

Secondary primordia

Likely primary primordia

Secondary primordia

Likely primary primordia

Primary primordia

Dorsal pattern

Urosomoida-like pattern

Urosomoida-like pattern

Oxytricha-like pattern

Hemigastrostyla-like pattern

Hemigastrostyla-like pattern

Gonostomum-like pattern

Gonostomum-like pattern

Parental DK

Completely resorbed

Completely resorbed

Completely resorbed

Completely resorbed

Completely resorbed

Completely resorbed

Retained

Data source

present work

Kaur et al. (2019) [20]

Foissner (1982) [33]

Song and Wilbert (1997) [19]

Shao et al. (2013) [38]

Li et al. (2010) [17]

Hu and Song (2000) [39]

  1. aData are based on protargol-stained specimens. Measurements in μm.
  2. Abbreviations: AZM adoral zone of membranelles, DK dorsal kineties, DKA dorsal kinety anlagen, FVTA fronto-ventral-transverse anlagen, LMA left marginal anlage, PTVC pretransverse ventral cirri, RMA right marginal anlage.