Research
Development to metamorphosis of the nemertean pilidium larva
Oregon Institute of Marine Biology, University of Oregon, Charleston, OR 97420, USA
Frontiers in Zoology 2010, 7:30 doi:10.1186/1742-9994-7-30
Published: 2 December 2010Additional files
Movie 1: Metamorphosis of the pilidium larva of Micrura alaskensis. This time-lapse movie shows a typical sequence of pilidial metamorphosis, in which the juvenile successively breaks through the amniotic membrane and the larval epidermis, then backs out of the larval body while simultaneously consuming the larval tissues. In this sequence, the entire larval body is devoured within a few minutes, and the young nemertean worm crawls away having finished its first meal. The video is sped up 2.5× compared to real time.
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Movie 2: Cephalic disc invaginations in a 7-day old pilidium larva of Micrura alaskensis. A running z-projection movie of the confocal z-series that was used to make Figure 6. Phalloidin is white, nuclear dye hoechst -- orange.
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Movie 3: Trunk disc invaginations in a 10-day old pilidium larva of Micrura alaskensis. A running z-projection movie of the confocal z-series that was used to make Figure 7. Phalloidin is white, nuclear dye hoechst -- orange.
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Movie 4: Three pairs of imaginal discs and the proboscis rudiment in a 17-day old pilidium larva of Micrura alaskensis. A running z-projection movie of the confocal z-series that was used to make Figures 8A and 8A'. Phalloidin is white, nuclear dye hoechst -- orange.
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Movie 5: Cerebral organ disc invaginations in a 17-day old pilidium larva of Micrura alaskensis. A running z-projection movie of the confocal z-series that was used to make Figures 8C and 8C'. Phalloidin is white, nuclear dye hoechst -- orange.
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Movie 6: Juvenile foregut invaginations in a "complete proboscis" stage of Micrura alaskensis. A running z-projection movie of the confocal z-series that was used to make Figure 12B. Frontal sections. Phalloidin labeling.
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Movie 7: Juvenile foregut invaginations and nephridia in a "complete proboscis" stage of Micrura alaskensis. A running z-projection movie of the confocal z-series that was used to make Figures 12A,12C, and 12D. Sagittal sections. Phalloidin labeling.
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