Polychaeta in Africa
نویسندگان
چکیده
منابع مشابه
Revision of Pherusa Oken, 1807(Polychaeta: Flabelligeridae).
Pherusa Oken, 1807 was the first genus of flabelligerids to be described and was regarded as having over 40 species. Following revision of all available material two morphological patterns are recognized: Pherusa is restricted to those species with eight branchial filaments of similar width, and anchylosed falcate neurohooks, shorter than body width. Species with the same number of branchial fi...
متن کاملRevision of Ilyphagus Chamberlin, 1919 (Polychaeta, Flabelligeridae)
Ilyphagus Chamberlin, 1919 includes abyssal, fragile benthic species. Most species have large cephalic cages but chaetae are brittle and easily lost which may explain why the original definition included species with a cephalic cage or without it. The type species, Ilyphagus bythincola Chamberlin, 1919, together with another species (Ilyphagus pluto Chamberlin, 1919) were described as lacking a...
متن کاملRevision of Sternaspis Otto, 1821 (Polychaeta, Sternaspidae)
To the memory of William Ronald Sendall Sternaspid polychaetes are common and often abundant in soft bottoms in the world oceans. Some authors suggest that only one species should be recognized, whereas others regard a few species as widely distributed in many seas and variable depths from the low intertidal to about 4400 m. There are some problems with species delineation and the distinctive v...
متن کاملA review of paragnath morphology in Nereididae (Polychaeta)
The form and arrangement of hardened paragnaths on the pharynx of polychaetes in the family Nereididae has for 150 years been used as a principal system of characters to distinguish species and other taxonomic ranks. Recent studies have shown that phylogenetic relationships based solely on paragnaths give different topologies and clade support than relationships inferred from other character sy...
متن کاملParticle capture and processing mechanisms in Sabellaria alveolata (Polychaeta: Sabellariidae)
Sabellaria alveolata, a ciliary suspension feeder, is a reef-building polychaete widely distributed in European waters, and is an important element of the trophic web of the ecosystems they have colonised. The lack of data concerning the feeding mechanisms of polychaete sabellariids is an impediment to understanding their roles in these systems. In this study, we combine a descriptive approach ...
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ژورنال
عنوان ژورنال: Nature
سال: 1968
ISSN: 0028-0836,1476-4687
DOI: 10.1038/2171187c0