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Spontaneous hatching of Fallacohospes inchoatus,an umagillid flatworm from the northeastern Pacific crinoid Florometra serratissima
| Title: | Spontaneous hatching of Fallacohospes inchoatus,an umagillid flatworm from the northeastern Pacific crinoid Florometra serratissima. |
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| Name(s): |
Shinn, G. L. Harbor Branch Oceanographic Institute |
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| Type of Resource: | text | |
| Genre: | Article | |
| Date Issued: | 1986 | |
| Publisher: | NRC Research Press. | |
| Place of Publication: | Ottawa | |
| Physical Form: | ||
| Extent: | 5 p. | |
| Language(s): | English | |
| Identifier: | FA00007176 (IID), 10.1139/z86-314 (doi) | |
| Note(s): |
Egg capsules of Fallacophospes inchoatus are roughly tetrahedral in shape, have a hydratable adhesive covering, and typically
contain two zygotes and 40-50 yolk cells. Embryos complete development in 40-42 days and hatch spontaneously when kept in
seawater at 8-10° C. This observation suggests that the suspension-feeding crinoid hosts are infected by eating free-swimming
larvae rather than by eating egg capsules that contain embryos, which is the case for deposit-feeding echinoderms that harbour
umagillids. The possibility is raised that umagillids originally evolved as parasites of suspension-feeding echinoderms and that
the mode of reproduction of crinoid-inhabiting umagillids is primitive for the family. Florida Atlantic University. Harbor Branch Oceanographic Institute contribution 496 This manuscript is an author version with the final publication available and may be cited as: Shinn, G. L. (1986). Spontaneous hatching of Fallacohospes inchoatus, an umagillid flatworm from the northeastern Pacific crinoid Florometra serratissima. Canadian Journal of Zoology, 64(9), 2068-2071. doi: 10.1139/z86-314 |
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| Subject(s): |
Flatworms Turbellaria Crinoidea Endosymbiosis Egg capsules Hatching of eggs |
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| Links: | http://dx.doi.org/10.1139/z86-314 | |
| Persistent Link to This Record: | http://purl.flvc.org/fau/fd/FA00007176 | |
| Host Institution: | FAU |
