Bradophila Levinsen 1878
Genus Bradophila Levinsen, 1878 Diagnosis. Adult female body highly transformed consisting of ectosoma connected to endosoma by broad stalk passing through host’s body wall. Endosoma embedded in host, elongate, filiform. Ectosoma globular to slightly dorsoventrally flattened; lacking any external tr...
| Main Authors: | , , , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://zenodo.org/record/5927010 https://doi.org/10.5281/zenodo.5927010 |
| Summary: | Genus Bradophila Levinsen, 1878 Diagnosis. Adult female body highly transformed consisting of ectosoma connected to endosoma by broad stalk passing through host’s body wall. Endosoma embedded in host, elongate, filiform. Ectosoma globular to slightly dorsoventrally flattened; lacking any external trace of segmentation. Genital apertures paired, carried on sclerotized areas of cuticle located posterolaterally on margin of ectosoma; median copulatory pore located between genital apertures on ventral surface of ectosoma. Lacking vestiges of appendages and caudal rami; without anus. Egg sacs paired, large, multiseriate. Adult male consisting of broad, subquadrate cephalothorax and slender postcephalic trunk. Caudal rami modified as pair of hooks. Antennule indistinctly 3-segmented; third segment offset posterolaterally; first segment with blunt, modified setal element; second segment with 2 setal elements; distal segment with 2 apical elements. Antenna uniramous and subchelate, comprising elongate proximal segment, plus distal endopodal segment bearing terminal claw plus accessory claw. Mandible absent. Maxillule small, lobate, bearing 2 apical setae. Maxilla lobate, ornamented with denticles distally. Maxilliped subchelate; proximal segment robust, ornamented with 2 spinulose processes on myxal surface; distal subchela comprising free endopodal segment plus curved claw. Type species: Bradophila pygmaea Levinsen, 1878, by monotypy. Remarks. Since its original description 140 years ago, the type species, B. pygmaea, has been reported from only a single host species, Brada villosa (Rathke, 1843), a member of the polychaete family Flabelligeridae de Saint Joseph, 1894. The original description was based on museum material with no locality data (Levinsen 1878) but its known distribution is restricted to high latitude waters of the North Atlantic including both Norwegian and Russian coastal waters and into the White Sea (Marchenkov 1999; Huys 2016). Marchenkov (2002) gave supplementary morphological data on the female of ... |
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