We observed three distinct types of setule
cross-linkage: (I) within the setal fan of each podite, (II) between the setal fans of each podite, and (III) across the midline joining two appendages of a pair.
Previously published data classified the setobranch setae into four types; anchor, scale setule
, simple scale setule
, and digitate scale setule
setae as described by Matsuokaa & Suzukib (2011), while in G.
Working with an idealized cylindrical model of a setule
, Huajian Gao and Haimin Yao of the Max Planck Institute for Metals Research in Stuttgart, Germany, determined that the tip of such a hair should modestly dimple inward to achieve the greatest adhesion.
2C): Exopod reduced, with a group of tiny setule
son distal end.
Secondary processes long; thin setules
arranged in two distinct rows along length of setal shaft; setule
density and distances between rows variable.
4A) with large coxa ornamented with row of small setules
along inner and outer margins.
4A) 1.5 times longer than ramus and three times longer than lateral seta, middle inner seta about 2 times as long as middle outer seta, the latter ornamented only with setules
(arrow in Fig.
The material was coated in gold and at least two sections of the filtration mesh of each specimen were photographed, specifically from the central area and the base of the setules
. Scanning electron microscopy (SEM) was made using a Zeiss DSM-960 and the distances between the central axes of the setules
were measured from the micrographs.
1A-F and 3 A), the plumose setae are smaller, with sparse setules
in relation to juveniles (Fig.
On legs II and III (Figs 20, 23) setae with adhering setules
, making an impression of seta being nude, are also present.