Biology:Metatrochophore
A metatrochophore (/ˌmiːtəˈtroʊkəˌfɔːr, ˌmɛ-, -ˈtrɒ-, -koʊ-/;[1][2]) is a type of larva developed from the trochophore larva of a polychaete annelid.
The metatrochophore of a deep-sea hydrothermal vent vestimentiferan has a foregut and a midgut. The foregut cells have several microvilli, basal bodies, and cilia, with e-dense granules dispersed in the apical cell region. The diameter of the midgut in one specimen was 50 μm and the lumen’s diameter was 7 μm, in which the cilia extended and e-dense material was found. The midgut cells had fewer cilia than the fore- and hindgut cells but exhibited an extensive, e-dense brush of microvilli and a nucleus in the apical third of the cell body. Additionally, the midgut contained a few bacteria in the lumen. [3]
Metatrochophores have a number of features trochophores lack, including eyespots and segments.
References
- ↑ "Meta". Meta. Oxford University Press. http://www.lexico.com/definition/Meta. "Trochophore". Trochophore. Oxford University Press. http://www.lexico.com/definition/Trochophore.
- ↑ "Meta". Dictionary.com Unabridged. Random House. https://www.dictionary.com/browse/Meta. "Trochophore". Dictionary.com Unabridged. Random House. https://www.dictionary.com/browse/Trochophore.
- ↑ Bright, Monika. "The metatrochophore of a deep-sea hydrothermal vent vestimentiferan (Polychaeta: Siboglinidae)". Organisms, Diversity and Evolution. https://link.springer.com/content/pdf/10.1007/s13127-012-0117-z.pdf.
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