Observations on the Behavior and Feeding Mechanisms of the Suctorian Heliophrya erhardi (Rieder) Matthes Preying on Paramecium

Spoon, Donald M.; Chapman, George B.; Cheng, Ruth S.; Zane, Sandra F.

doi:10.2307/3225137

Cited by 17 publications

(4 citation statements)

References 21 publications

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“…When a tentacle touches a possible prey, the discharge of haptocysts is able to penetrate the prey's membrane, forming a connection between the predator and the prey and injecting the extrusome content into the latter, which also concurs to the fusion of the membranes belonging to the two organisms [13,34]. However, the fusion of the two membranes is not always immediate, for example, in Heliophrya erhardi, Spoon et al [35] observed that many specimens of Paramecium contacting the tentacles of the suctorian escaped discharging trichocysts at the point of contact, suggesting that Paramecium is able to defend itself from the puncture of the haptocysts.…”

Section: The Peculiar Tentacles Of Suctoriansmentioning

confidence: 99%

Predator-Prey Interactions in Ciliated Protists

Buonanno¹,

Ortenzi²

2021

Extremophilic Microbes and Metabolites - Diversity, Bioprospecting and Biotechnological Applications

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Protists appeared relatively early in evolution, about 1.8 billion years ago, soon after the first prokaryotic organisms. During this time period, most species developed a variety of behavioral, morphological, and physiological strategies intended to improve the ability to capture prey or to avoid predation. In this scenario, a key role was played by specialized ejectable membrane-bound organelles called extrusomes, which are capable of discharging their content to the outside of the cell in response to various stimuli. The aim of this chapter is to describe the two main strategies adopted in ciliate predatorprey interactions: (a) the first is mediated by mechanical mechanisms and involves, for example, extrusomes called trichocysts and (b) the second is mediated by toxic secondary metabolites and involves different kinds of chemical extrusomes.

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Section: The Peculiar Tentacles Of Suctoriansmentioning

confidence: 99%

Predator-Prey Interactions in Ciliated Protists

Buonanno¹,

Ortenzi²

2021

Extremophilic Microbes and Metabolites - Diversity, Bioprospecting and Biotechnological Applications

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“…( 2 ) Feeding Increases in output of the contractile vacuole complex occur when some protozoa feed (MacLennan, 1933; Frisch, 1937; Rudzinska & Chambers, 1951 ;Kitching, 1951,195zb; Spoon, Chapman, Cheng & Zane, 1976;Canella & Rocchi-Canella, 1976). This is presumably due to the diffusion of water from food vacuoles into the cytoplasm.…”

Section: Suggested Functions Of Contractile Vacuole Complexes ( Imentioning

confidence: 99%

Contractile Vacuoles and Associated Structures: Their Organization and Function

Patterson

1980

Biological Reviews

176

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“…This well-known species has been reported several times in the half century since the original description. Most of these reports, however, focused on the ultrastructure of the tentacles, rather than attempting to present accurate morphological data and taxonomic research ( Hauser and Eys, 1976 ; Spoon et al, 1976 ; Hanke-Bücker et al, 2000 ). There is therefore a need to provide an improved diagnosis here.…”

Section: Resultsmentioning

confidence: 99%

New Data Define the Molecular Phylogeny and Taxonomy of Four Freshwater Suctorian Ciliates With Redefinition of Two Families Heliophryidae and Cyclophryidae (Ciliophora, Phyllopharyngea, Suctoria)

Yuan

et al. 2021

Front. Microbiol.

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Four suctorian ciliates, Cyclophrya magna Gönnert, 1935, Peridiscophrya florea (Kormos & Kormos, 1958) Dovgal, 2002, Heliophrya rotunda (Hentschel, 1916) Matthes, 1954 and Dendrosoma radians Ehrenberg, 1838, were collected from a freshwater lake in Ningbo, China. The morphological redescription and molecular phylogenetic analyses of these ciliates were investigated. Phylogenetic analyses inferred from SSU rDNA sequences show that all three suctorian orders, Endogenida, Evaginogenida, and Exogenida, are monophyletic and that the latter two clusters as sister clades. The newly sequenced P. florea forms sister branches with C. magna, while sequences of D. radians group with those from H. rotunda within Endogenida. The family Heliophryidae, which is comprised of only two genera, Heliophrya and Cyclophrya, was previously assigned to Evaginogenida. There is now sufficient evidence, however, that the type genus Heliophrya reproduces by endogenous budding, which corresponds to the definitive feature of Endogenida. In line with this and with the support of molecular phylogenetic analyses, we therefore transfer the family Heliophryidae with the type genus Heliophrya to Endogenida. The other genus, Cyclophrya, still remains in Evaginogenida because of its evaginative budding. Therefore, combined with morphological and phylogenetic analysis, Cyclophyidae are reactivated, and it belongs to Evaginogenida.

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Observations on the Behavior and Feeding Mechanisms of the Suctorian Heliophrya erhardi (Rieder) Matthes Preying on Paramecium

Cited by 17 publications

References 21 publications

Predator-Prey Interactions in Ciliated Protists

Predator-Prey Interactions in Ciliated Protists

Contractile Vacuoles and Associated Structures: Their Organization and Function

New Data Define the Molecular Phylogeny and Taxonomy of Four Freshwater Suctorian Ciliates With Redefinition of Two Families Heliophryidae and Cyclophryidae (Ciliophora, Phyllopharyngea, Suctoria)

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