Metatrochophore

A metatrochophore (/ˌmiːtəˈtroʊkəˌfɔːr, ˌmɛ-, -ˈtrɒ-, -koʊ-/;[2][3]) is a type of larva developed from the trochophore larva of a polychaete annelid.

Bright-field microscope image of metatrochophore of annelid Pomatoceros lamarckii (family Serpulidae)[1]
ey = eyspot

Metatrochophores have a number of features trochophores lack, including eyespots and segments.

References

McDougall, Carmel; Chen, Wei-Chung; Shimeld, Sebastian M.; Ferrier, David E. K. (2006). "The development of the larval nervous system, musculature and ciliary bands of Pomatoceros lamarckii (Annelida): heterochrony in polychaetes". Frontiers in Zoology. 3 (1): 16. doi:10.1186/1742-9994-3-16. PMC 1615870. PMID 17032451.
"Meta". Oxford Dictionaries UK Dictionary. Oxford University Press. Retrieved 2016-01-24. "Trochophore". Oxford Dictionaries UK Dictionary. Oxford University Press. Retrieved 2016-01-24.
"Meta". Dictionary.com Unabridged. Random House. Retrieved 2016-01-24. "Trochophore". Dictionary.com Unabridged. Random House. Retrieved 2016-01-24.

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[McDougall2006-1] McDougall, Carmel; Chen, Wei-Chung; Shimeld, Sebastian M.; Ferrier, David E. K. (2006). "The development of the larval nervous system, musculature and ciliary bands of Pomatoceros lamarckii (Annelida): heterochrony in polychaetes". Frontiers in Zoology. 3 (1): 16. doi:10.1186/1742-9994-3-16. PMC 1615870. PMID 17032451.

[2] "Meta". Oxford Dictionaries UK Dictionary. Oxford University Press. Retrieved 2016-01-24. "Trochophore". Oxford Dictionaries UK Dictionary. Oxford University Press. Retrieved 2016-01-24.

[3] "Meta". Dictionary.com Unabridged. Random House. Retrieved 2016-01-24. "Trochophore". Dictionary.com Unabridged. Random House. Retrieved 2016-01-24.