. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 132 M. SCHMIDT AND S. HARZSCH. Figure 5. Proliferating cells in the central olfactory pathway of adult hermit crab (Pagurus bernlninhis: Anomura [Anomala]; Paguridae) identified by in vim BrdU-labeling. Light micrographs of vibratome sections. (a. b) Central brain. In the lateral soma clusters (LC). a compact group of small BrdU-positive nuclei (arrows) is located close to the neuropil of the olfactory lobe (OL). (c) Eyestalk ganglion. In the soma cluster (HBC) of the hemiellipsoid body (HB). a compact group ot small BrdLI-p
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 132 M. SCHMIDT AND S. HARZSCH. Figure 5. Proliferating cells in the central olfactory pathway of adult hermit crab (Pagurus bernlninhis: Anomura [Anomala]; Paguridae) identified by in vim BrdU-labeling. Light micrographs of vibratome sections. (a. b) Central brain. In the lateral soma clusters (LC). a compact group of small BrdU-positive nuclei (arrows) is located close to the neuropil of the olfactory lobe (OL). (c) Eyestalk ganglion. In the soma cluster (HBC) of the hemiellipsoid body (HB). a compact group ot small BrdLI-posilive nuclei is located close to the HB neuropil. Note scattered BrdU-positive nuclei (arrowheads) in the soma clusters of visual neuropils (medulla interna = MI; medulla externa = ME). Inset: Higher magnification shows shows spherical and hence neuronal shape of BrdU-positive nuclei. shrimp (Sicyonia brevirostris), where 5 eyestalks were an- alyzed. However, in all tested species, very few nuclei located in the HBC were labeled in most specimens; the same was true for other soma clusters of the eyestalk gan- glia, especially the soma clusters of the three visual neuro- pils. Most of these BrdU-positive nuclei were either flat and elongated, and thus probably represent glial cells; or they were more spherical but clearly associated with arterioles passing through the soma clusters, and thus probably rep- resent connecthr tissue cells constituting the wall of these hemolymph vesM. Hut some nuclei in soma clusters were spherical and not ob iously associated with arterioles; thus they might represent lu-uronal precursor cells. Discussion We demonstrate by in vm> labeling with BrdU that mi- totic activity in the neuronal soma clusters of the central olfactory pathway appears to be a common feature of adult decapod crustaceans; this result corroborates and substan- tially extends previous findings for juvenile and adult shore crabs (Ccircintis niaenas) and for the Australian cr
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
