. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure 9. Two alternative cladograms showing larval form of Chaeropteriis compared with thai of related polychaete families. The cladograms are adapted from Rouse and Fauchald (1997)—(a) from figure 70 and (b) from figure 71. The presence of the Pogonophora in the sabellid clade is omitted from these diagrams. Note that in either cladogram. outgroup taxa to the Chaetopteridae have overtly segmented early larvae, indicating that the chaetoptend larval form and ontogenetic heterochrony are unique to that lineage. Representativ
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure 9. Two alternative cladograms showing larval form of Chaeropteriis compared with thai of related polychaete families. The cladograms are adapted from Rouse and Fauchald (1997)—(a) from figure 70 and (b) from figure 71. The presence of the Pogonophora in the sabellid clade is omitted from these diagrams. Note that in either cladogram. outgroup taxa to the Chaetopteridae have overtly segmented early larvae, indicating that the chaetoptend larval form and ontogenetic heterochrony are unique to that lineage. Representative larval forms are adapted from the following sources: spionid, Pol\dora webster (Blake, 1969); terebellid. Ramex califonriensis (Blake. 1991); oweniid, Oweniafusiformis (Plate and Husemann, 1997): sabellid, Mcxalniiiimi vi'sictilosiiin (Wilson. 1936); sa- bellariid, miiriilix (Bhaud and Cazaux, 1987); capitellid, Capi- tella capitals (Plate and Husemann. 1997). nidae, Apistobranchidae, Trochochaetidae, Longosomati- dae, Magelonidae, and Poecilochaetidae). This is the topol- ogy favored by Rouse and Fauchald. who include the Chaetopteridae in a clade called the Spionida (figs. 70 and 73 in Rouse and Fauchald, 1997). (Examination of other members of the Chaetopteridae. such as Spiochaetoptems [Bhaud et ai. 1994]. makes the spionid connection very clear.) On the other hand, when multi-state characters are used (fig. 71 in Rouse and Fauchald, 1997). the parsimony analysis results in the Chaetopteridae being a sister group to the sabellid families and pogonophorans (Frenulata. Vesti- mentifera. Sabellariidae. Sabellidae. and Serpulidae; collec-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
