Reconciling Cladistic and Genetic Analyses in Choreotrichid Ciliates (Ciliophora, Spirotricha, Oligotrichea)

Agatha, Sabine; Strüder‐Kypke, Michaela C.

doi:10.1111/j.1550-7408.2012.00623.x

Cited by 44 publications

(77 citation statements)

References 73 publications

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“…Tintinnids, in contrast with other groups of planktonic ciliates, for example, “oligotrichs,” are, but a single order even among competing ciliate classification schemes. According to traditional ciliate taxonomy, and in agreement with recent molecular studies (Agatha and Strüder‐Kype ; Bachy et al. ; Saccà et al.…”

Section: General Characteristics Of Tintinnids and Ecological Role Insupporting

confidence: 89%

Southern Ocean Biogeography of Tintinnid Ciliates of the Marine Plankton

Dolan

Pierce

Yang

et al. 2012

J Eukaryotic Microbiology

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Ciliate microzooplankton are important grazers in most pelagic ecosystems and among them, tintinnids, with their largely species-specific loricas, allow relatively easy assessment of questions of diversity and distributions. Herein, we present the results of a survey of species records of tintinnids from the Southern Ocean (locations below 40°S) reported in 56 publications yielding 2,047 species records (synonyms included) from 402 locations. The 192 species reported can be parsed into two main groups: 32 endemic Southern Ocean species, known only from 40°S and further south, and a second group of 181 widespread species, forms with extensive geographic ranges extending into the Southern Ocean. Widespread species reported from the Southern Ocean can be further divided into a group of 81 species, each recorded multiple times in the Southern Ocean waters and 70 apparent "stray" species which have only been found but once. The endemic and widespread species of the Southern Ocean show both distinct distributional patterns and morphological differences. The assemblage of Southern Ocean endemics is found mostly within the Antarctic zone delimited by the average location of the Polar Front and contains a relatively large portion of wide-mouthed forms. We give suggestions for future study.

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Section: General Characteristics Of Tintinnids and Ecological Role Insupporting

confidence: 89%

Southern Ocean Biogeography of Tintinnid Ciliates of the Marine Plankton

Dolan

Pierce

Yang

et al. 2012

J Eukaryotic Microbiology

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“…22, 23, 27). Complex ciliary patterns (Agatha and Strüder‐Kypke ) are observed, which have one monokinetidal ventral, one dikinetidal dorsal, and one dikinetidal posterior kinety, as well as a right, left, and lateral ciliary field (Fig. 22, 23, 29, 30, 32, 33).…”

Section: Resultsmentioning

confidence: 99%

“…Laval‐Peuto and Brownlee long ago argued that to correctly classify tintinnid species various approaches should be employed such as observation of cytology, and even non‐morphological characteristics such as ecological and behavioral data (Laval‐Peuto and Brwonlee ). Recently, several studies have discussed the usefulness of combined molecular analysis, cytological studies, and observation of lorica ultrastructure (Agatha ; Agatha and Strüder‐Kypke ). All these lines of evidence will likely be needed to unambiguously place Cymatocylis among tintinnids.…”

Section: Discussionmentioning

confidence: 99%

Morphological and Ribosomal DNA‐based Characterization of Six Antarctic Ciliate Morphospecies from the Amundsen Sea with Phylogenetic Analyses

Kim

Choi

Dolan

et al. 2013

J Eukaryotic Microbiology

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We characterized six tintinnid ciliates from Antarctic waters using molecular markers and morphological traits: Amphorellopsis quinquealata, Codonellopsis gaussi, Cymatocylis convallaria, Cy. calyciformis, Cy. drygalskii, and Laackmanniella prolongata. The 100% similarity in SSU-ITS1-5.8S rDNA-ITS2-partial LSU rDNA sequences among Cy. convallaria, Cy. calyciformis, and Cy. drygalskii is supportive of synonymy. Codonellopsis gaussi and L. prolongata also showed high levels of similarity in SSU rDNA (99.83%) and the D2 domain of LSU rDNA (95.77%), suggesting that they are closely related. Phylogenetic analysis placed Cymatocylis in the Rhabdonellidae, Amphorellopsis in the Tintinnidae and L. prolongata/Co. gaussi within the Dictyocystidae.

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“…About 1200 species are in the literature (Agatha and Strüder-Kypke, 2012); virtually all are restricted to the marine plankton. The diameter of the mouth-end of the lorica, lorica oral diameter (LOD), is a conservative taxonomic character (Laval-Peuto and Brownlee, 1986).…”

Section: Introductionmentioning

confidence: 99%

Declines in both redundant and trace species characterize the latitudinal diversity gradient in tintinnid ciliates

et al. 2016

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The latitudinal diversity gradient is a well-known biogeographic pattern. However, rarely considered is how a cline in species richness may be reflected in the characteristics of species assemblages. Fewer species may equal fewer distinct ecological types, or declines in redundancy (species functionally similar to one another) or fewer trace species, those occurring in very low concentrations. We focused on tintinnid ciliates of the microzooplankton in which the ciliate cell is housed inside a species-specific lorica or shell. The size of lorica oral aperture, the lorica oral diameter (LOD), is correlated with a preferred prey size and maximum growth rate. Consequently, species of a distinct LOD are distinct in key ecologic characteristics, whereas those of a similar LOD are functionally similar or redundant species. We sampled from East Sea/Sea of Japan to the High Arctic Sea. We determined abundance distributions of biological species and also ecological types by grouping species in LOD size-classes, sets of ecologically similar species. In lower latitudes there are more trace species, more size-classes and the dominant species are accompanied by many apparently ecologically similar species, presumably able to replace the dominant species, at least with regard to the size of prey exploited. Such redundancy appears to decline markedly with latitude in assemblages of tintinnid ciliates. Furthermore, the relatively small species pools of the northern high latitude assemblages suggest a low capacity to adapt to changing conditions.

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Reconciling Cladistic and Genetic Analyses in Choreotrichid Ciliates (Ciliophora, Spirotricha, Oligotrichea)

Cited by 44 publications

References 73 publications

Southern Ocean Biogeography of Tintinnid Ciliates of the Marine Plankton

Southern Ocean Biogeography of Tintinnid Ciliates of the Marine Plankton

Morphological and Ribosomal DNA‐based Characterization of Six Antarctic Ciliate Morphospecies from the Amundsen Sea with Phylogenetic Analyses

Declines in both redundant and trace species characterize the latitudinal diversity gradient in tintinnid ciliates

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