Focusing on Genera to Improve Species Identification: Revised Systematics of the Ciliate Spirostomum

Boscaro, Vittorio; Carducci, Daniela; Barbieri, Giovanna; Senra, Marcus Vinicius Xavier; Andreoli, Ilaria; Erra, Fabrizio; Petroni, Giulio; Verni, Franco; Fokin, Sergei I.

doi:10.1016/j.protis.2014.05.004

Cited by 37 publications

(50 citation statements)

References 39 publications

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“…The Jindo population of Spirostomum ambiguum closely resembles the European original population (Müller, 1786) and other European populations (Foissner et al, 1992;Boscaro et al, 2014) with respect to the shape of the macronucleus and ratio of body length to body width, number of cortical granular rows in between somatic kineties, and color of cortical granules (Müller, 1786). However, Jindo pop ulation differs from British population in the body length (340-930 μm vs. 1,000-4,000 μm) (Foissner et al, 1992) (Tables 1, 2).…”

Section: A B Cmentioning

confidence: 63%

“…However, Jindo pop ulation differs from British population in the body length (340-930 μm vs. 1,000-4,000 μm) (Foissner et al, 1992) (Tables 1, 2). The characteristics of Jindo population differ from those of Swedish population in the body length (340-930 μm vs. 900-thousands μm), in the ratio of the adoral zone of membranelles to body length (60-80% vs. 50-66%) and the ratio of contractile vacuole to body length (6-17% vs. 10>%) (Boscaro et al, 2014) (Tables 1, 2). The Jindo population of S. ambiguum has conspicuously short body length compared to that of other populations in previous investigations (Foissner et al, 1992;Boscaro et al, 2014).…”

Section: A B Cmentioning

confidence: 89%

“…Spirostomum ambiguum is similar to S. subtilis but differ in body length/width ratio (10-15 vs. 20-25) and in the number of cortical granular rows in between somatic kineties (4-5 vs. 1) (Boscaro et al, 2014). Roux, 1901 (Tables 1, 2, Figs.…”

Section: A B Cmentioning

confidence: 99%

“…The Jindo population of Spirostomum minus closely resembles the original Swiss population (Roux, 1901), British population (Foissner et al, 1992), and Brazilian populations (Fernandes and da Silva Neto, 2013) with respect to ratio of adoral zone membranelles to body length, shape of macronucleus, and ratio of body length to width. However, the Jindo population differs slightly from the Madagascarian population in number of macronucleus nodules (11-16 vs. 24), the German population in ratio of adoral zone of membranelles to body length (40-50% vs. 28-40%), the Brazilian population in body width (35-45 μm vs. 55-115 μm) and color of cortical granules (colorless vs. pale brown), and the European population in number of micronuclei (20-37 vs. up to 20) (Dragesco and Dragesco-Kernéis, 1986;Song and Wilbert, 1989;Fernandes and da Silva Neto, 2013;Boscaro et al, 2014) (Table 2). Typical Spirostomum minus and S. ambiguum are very similar but different with respect to body length (300-800 μm vs. 1,000-4,000 μm) and ratio of adoral zone membranelles to body length (40-50% vs. 65-70%) (Foissner et al, 1992) (Tables 1, 2).…”

Section: Spirostomum Minusmentioning

confidence: 99%

“…The genus Spirostomum was differentially diagnosed genus Trichoda by a long collecting canal from the contractile vacuole to the anterior part, a truncated posterior end and a long buccal field on the body edge (Ehrenberg, 1833(Ehrenberg, , 1838Curds et al, 1983;Jang et al, 2012). The Spirostomum has been known eight species worldwide, and two species of them have been recorded morphologically in Korea up to now (Claparède and Lachmann, 1858;Kahl, 1932;Shigenaka, 1959;Dragesco and Dragesco-Kernéis, 1986;Foissner et al, 1992;Jang et al, 2012;Boscaro et al, 2014). In this study, we describe two species from Jindo Island, Korea.…”

Section: Introductionmentioning

confidence: 99%

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First Record of Two Spirostomum Species (Spirostomatidae, Heterotrichida, Heterotrichea) of Ciliates from Jindo Island in Korea

Kim¹,

Kim²,

Shin³

2016

Animal Systematics, Evolution and Diversity

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Two Spirostomum species were collected from freshwater in Jindo Island, Korea and identified as Spirostomum ambiguum (Müller, 1786) Ehrenberg, 1835 and Spirostomum minus Roux, 1901. This study is the first known morphological record of these two species being found in Korea. The description is based on the observation of living specimens and protargol impregnated specimens. Diagnostics of Spirostomum ambiguum: body size 340-930 × 45-80 μm in vivo; long and slender body with truncated posterior part; macronucleus moniliform with 7-22 nodules; cortical granules irregularly arranged 4-5 rows in between somatic kineties; 24-58 somatic kineties arranged longitudinally; adoral zone of membranelles (AZM) covered about 60-80% of body length. Diagnostics of Spirostomum minus: body size 500-730 × 35-45 μm in vivo; long and slender body with truncated posterior part; macronucleus moniliform with 11-16 nodules; micronucleus 20-37 oval shape; cortical granules regularly arranged 3-4 rows in between somatic kineties; 20-30 somatic kineties arranged longitudinally; AZM covered about 40-50% of body length with 120-150 adoral membranelles. Morphological observationCells were observed under a dissecting microscope using low magnification and an optical microscope at high magnification. The infraciliature was revealed by protargol impregnations (Wilbert, 1975). Drawings of living cells were based on free-hand sketches. Classification and terminology are based on Lynn (2008).

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Section: A B Cmentioning

confidence: 63%

Section: A B Cmentioning

confidence: 89%

Section: A B Cmentioning

confidence: 99%

Section: Spirostomum Minusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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First Record of Two Spirostomum Species (Spirostomatidae, Heterotrichida, Heterotrichea) of Ciliates from Jindo Island in Korea

Kim¹,

Kim²,

Shin³

2016

Animal Systematics, Evolution and Diversity

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Protozooplankton

Macek

Sánchez-Medina

Vilaclara

et al. 2022

Lake Alchichica Limnology

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Effect of microplastic particles on the population growth rate and clearance rate of selected ciliates (Protista, Ciliophora)

Budziak,

Fyda

2023

Environ Sci Pollut Res

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Microplastics (MPs), due to their micro size, which overlaps with the typical food size of various aquatic organisms, can be ingested and move up the food chain, accumulating in the bodies of organisms at higher trophic levels. Few studies have focused on the uptake of MPs by ciliates, which are an important element of the microbial cycle. Three different ciliate species were used in this study: Blepharisma japonicum, Euplotes sp., and Spirostomum teres, as well as polystyrene beads with diameters of 1 and 2 µm at two concentrations (106 and 107 beads × mL−1). The results of the experiments showed that MPs have a variable, species-specific effect on the population growth rate of ciliates, which is directly dependent on their concentration in the environment (P < 0.01). It was also observed that the number of MPs ingested changed over time depending on their concentration and size. On average, the highest number of ingested MPs (883.11 ± 521.47) was recorded at 60 min of exposure to a low concentration of small beads in B. japonicum. The lowest number of beads was ingested after 5 min of exposure to a low concentration of large beads in the same species. The rate of MP uptake by the ciliate species was significantly dependent on their concentration, exposure time, and size (P < 0.001). The highest clearance rate was observed in the fifth minute of the experiment in the environment with the lowest MP concentration.

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Focusing on Genera to Improve Species Identification: Revised Systematics of the Ciliate Spirostomum

Cited by 37 publications

References 39 publications

First Record of Two Spirostomum Species (Spirostomatidae, Heterotrichida, Heterotrichea) of Ciliates from Jindo Island in Korea

First Record of Two Spirostomum Species (Spirostomatidae, Heterotrichida, Heterotrichea) of Ciliates from Jindo Island in Korea

Protozooplankton

Effect of microplastic particles on the population growth rate and clearance rate of selected ciliates (Protista, Ciliophora)

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