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Foettingeriidae
The Foettingeriidae are a family of apostome ciliates of the order Apostomatida. Like other apostomes, they are symbiotic with Crustacea, and live in microbial cysts on their host's exoskeleton for most of their life. They excyst, or leave their cysts, when their hosts molt their exoskeleton in order to feed on the exuvial fluids trapped in their host's molted exoskeleton. Subfamilies Genera of the family Foettingeriidae are separated into the exuviotrophs and the histotrophs. Exuviotrophs The exuviotrophs are a group of genera of the Foettingeriidae. They only feed on the exuvial fluids trapped in the host's cast-off exoskeleton. Histotrophs The histotrophs are another group of foettingeriid genera. Like the exuviotrophs, they feed on exuvial fluids of cast-off exoskeletons. They also excyst after their host dies naturally by injury and feed on the tissue fluids of the host's corpse. Life cycle Encysted state Protozoa of the family Foettingeriidae are called phoronts when th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apostome
The Apostomatida are an order of ciliates from the class Oligohymenophorea. Individual organisms from this order are called apostomes. They are symbiotic with Crustacea. For majority of their life cycle they are dormant and encysted on their host's exoskeleton. The life cycle of apostomes varies; most genera will multiply through the biological process of fission causing the larvae to develop within the crustacean host. Physical characteristics may include a small cytostome (mouth), often accompanied by a glandular rosette and sparse hair like projections (cilia The cilium (: cilia; ; in Medieval Latin and in anatomy, ''cilium'') is a short hair-like membrane protrusion from many types of eukaryotic cell. (Cilia are absent in bacteria and archaea.) The cilium has the shape of a slender threadlike proj ...) arranged in spiral rows on the organism. References * * Ciliate orders {{ciliate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
