. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Chcliccrata Myriapoda Crustacea Insccta. ncurohlasts ^k Mr. r.'llljlioll Figure 1. (a) .4 ventral urn t>f three segments of ti phalloidin-laheled horseshoe crcib embryo shows numerous ftuorescently stained areas, \vhich represent the bundled cell processes of the imagination sites (arrows). The higher magnification inset shows a horizontal section through the bottle-shaped cells of two imagination sites (asterisk). Ib = limb bud. (b) One imagination site consisting of a cluster of bottle-shaped cells (arrow). The bundled
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Chcliccrata Myriapoda Crustacea Insccta. ncurohlasts ^k Mr. r.'llljlioll Figure 1. (a) .4 ventral urn t>f three segments of ti phalloidin-laheled horseshoe crcib embryo shows numerous ftuorescently stained areas, \vhich represent the bundled cell processes of the imagination sites (arrows). The higher magnification inset shows a horizontal section through the bottle-shaped cells of two imagination sites (asterisk). Ib = limb bud. (b) One imagination site consisting of a cluster of bottle-shaped cells (arrow). The bundled cell processes extend to the ventral surface (arrowhead), v = ventral, d = dorsal, (c) The probable relationships of the arthropod groups. The "imagination mode" of ganglia formation occurs at least tit the base of the chelicerates, whereas the "stem cell mode" via neuroblasts is an apomorphic character for the Tetruconata. The myriapods examined to date show a different invagination mode. 6. Friedrich, M., and D. Tautz. 2001. Ann. Soc. Entomol. Fr. () 37(1-2): 21-40. 7. Weygoldt, P. 1985. Pp. 20-37 in Neurobio/ogy of Arachnids. F. G. Barth. ed. Springer. Berlin. 8. Stollewerk, A., M. Weller, and D. Tautz. 2001. Development 128: 2673-2688. 9. Anderson, I). T. 1973. Embryology and Phytogeny in Annelids and Arthropods. Pergamon Press, Oxford. 10. Brown, G. C., and D. L. Clapper. 1981. Pp. 26S-290 in Marine Invertebrates. National Academy Press. Washington, 11. Mittmann, B., and G. Scholtz. 2001. Dev. Genes Evol. 211(5): 232-243. Reference: Bin/. Bull. 203: 222-223. (October 2002) Development of the Lateral Eye of Juvenile Limulus K. Smith1, C. Rulings2, F. A. Dodge3, and R. B. Barlow"' (Marine Biological Laboratory, Woods Hole, Massachusetts 02543) A horseshoe crab. Limuluspolyphemus, begins life with approx- imately 6 ommatidia in each of its lateral eyes. When the animal matures. 15 or 16 molts later, each eye will have close to 1000 ommatidia.
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
