Ciliates - an overview | ScienceDirect Topics
Ciliates of the family Strobilidiidae Kahl in Doflein & Reichenow, 1929 are mostly small to medium-sized, spheroid to conoid in shape, and are characterized by the possession of somatic kineties arranged in spiral or longitudinal rows and cortical flaps covering the bases of the somatic cilia. Morphogenesis has been documented for fewer than ...
Ciliate - an overview | ScienceDirect Topics
Balantidium coli is a large ciliate in the phylum Ciliophora. Trophozoites are ovoid, 30 to 150 by 150 by 25 pm, and with a subterminal tubular mouth. They are covered with cilia and with these they move rapidly. Cysts are spherical to ovoid, 40 to 50 μm in diameter, with many starch-containing food vacuoles.
Ciliates - an overview | ScienceDirect Topics
Ciliates have a unique genetic system that is, despite their merits as model organisms, relatively poorly understood. They exhibit nuclear dimorphism (see Glossary): each cell harbors two different kinds of nuclei. The cell’s phenotype is determined by the expression of a somatic nucleus (macronucleus).
Ciliate - an overview | ScienceDirect Topics
Ciliates (phylum Ciliophora, kingdom Chromista) are unicellular organisms that utilize cilia for locomotion and complex oral ciliature for feeding; possess somatic, polyploid macronuclei, and generative, diploid micronuclei; reproduce sexually by conjugation and asexually by binary fission.
Ciliophora - an overview | ScienceDirect Topics
Ciliophora (Ciliates) Jules J. Berman, in Taxonomic Guide to Infectious Diseases, 2012. Members of Class Ciliophora have a peculiar system of two nuclei: a small nucleus that contains the full genome, and a larger nucleus that plays the active role in cellular regulation. The larger nucleus is regenerated from the smaller nucleus through a ...
Functional diversity of aquatic ciliates - ScienceDirect
Oct 1, 2017 · Abstract. This paper first reviews the concept of functional diversity in general terms and then applies it to free-living aquatic ciliates. Ciliates are extremely versatile organisms and display an enormous functional diversity as key elements of pelagic food webs, acting as predators of bacteria, algae, other protists and even some metazoans.
Ciliates (Alveolata, Ciliophora) as bioindicators of environmental ...
May 1, 2021 · These ciliates are quite abundant in diverse freshwater habitats, especially in plankton (as they can consume up to 100% of the standing stock of nanoplankton every day) (Thorp and Covich, 2010, Grattepanche et al., 2019). Also, they can be easily morphologically identified due to their prominent adoral zone of membranelles.
Chapter 23 - Symbiotic microbes from ciliates - ScienceDirect
Jan 1, 2023 · Hydrogenosomes are an adaptive mechanism for anaerobic ciliates in the anoxic environment and thought to have a unique symbiotic origin from mitochondria-derived organelles (Hackstein et al., 2001). Clostridium species are strict anaerobes that consume short-chain fatty acids and sugars (Stieb and Schink, 1985).
Diversity of free-living marine ciliates (Alveolata, Ciliophora ...
Oct 1, 2017 · Ciliates of the subclass Scuticociliatia Small, 1967 are common inhabitants of freshwater, brackish water, and marine environments (Wiackowski et al., 1999, Mallo et al., 2014). Many are free-living whereas others are symbionts or facultative pathogens of fishes and invertebrates (de Puytorac et al. 1974). Owing to their small body size and ...
Pelagic ciliate (Ciliophora) communities in the Southern Ocean ...
Aug 1, 2023 · Pelagic ciliates can react more quickly than most other eukaryotic organisms due to their rapid growth rate in optimum environment, thus they were regarded as favorable bioindicators in various oceanographic regions (e.g., Kato and Taniguchi, 1993, Jiang et al., 2014, Rakshit et al., 2017, Wang et al., 2021a, Yu et al., 2022). During the ...