The body of the female emerges from the whale bone in a gelatinuous hemispherical tube that is 7 mm in diameter. The crown is composed of four palps and a cylindrical oviduct. The contracted crown plumes measure 0.95 cm in length. The oviduct is filled with ellipsoid eggs with a mean diameter of 146 by 117 um. The oviduct is convoluted upon contraction, and extends between the palps, 3 mm from the trunk. The palps are red with two longitudinal white stripes in living specimens. Pinnules are present on the inner margins of the palps. The trunk is 4.5 mm long and 0.9 mm wide, and is marked by a white coloured thickened tissue at the anterior. A green, bacterio-cyte filled sheath forms at the junction of the trunk and oviduct, measuring 1.2 mm long by 1mm wide. The ovisac is lobulate, with dimensions of 6.5 mm by 5 mm by 3 mm. The ovisac and roots are inflated with clear fluid in situ in the bone, which is lost on extraction.
Paedomorphic males are found clustered around the oviduct in the female tubes, and measure 0.15 - 0.25 mm long. The males have an anterior prototroch and posterior hooked chaete. The chaete have hooks and handles 15 - 21 um. The hooks lack a rostrum and are comprised of capitium with curved teeth over a subrostral process. The capitium have five teeth, but lack subrostral teeth.
(Rouse et al., 2004)
Types found on grey whale bones from 2891 m depth in Monterey Bay, California (36°36.8`N, 122°26.0`W) (Rouse et al., 2004).
Molecular Biology and Genetics
Nucleotide sequence analysis for mitochondrial COI, mitochondrial 16S rRNA and nuclear 18S rRNA confirmed that Osedax frankpressi and O. rubiplumus are distinct species (Rouse et al., 2004).
Barcode data: Osedax frankpressi
Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.
See the BOLD taxonomy browser for more complete information about this specimen and other sequences.
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Download FASTA File
Statistics of barcoding coverage: Osedax frankpressi
Public Records: 4
Specimens with Barcodes: 4
Species With Barcodes: 1
- G. W. Rouse, S. K. Goffredi, and R. C. Vrijenhoek (2004). "Osedax: Bone-Eating Marine Worms with Dwarf Males". Science (Washington DC) 305: 668–671. doi:10.1126/science.1098650. PMID 15286372.
- Fauchald, K. (2004). "Osedax frankpressi Rouse, Goffredi & Vrijenhoek, 2004". World Register of Marine Species. Retrieved March 20, 2013.
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