By Mark J. Wetzel (auth.), Piet F. M. Verdonschot, Hongzhe Wang, Adrian Pinder, Rebi Nijboer (eds.)
This quantity includes chosen papers from the ninth Symposium on Aquatic Oligochaeta, 6–10 October 2003, Wageningen, The Netherlands. 18 contributions take care of the biology of aquatic oligochaetes, and represents a mix of the fields of taxonomy, anatomy, morphology and body structure, existence heritage, ecology, sludge reviews and toxicology. This huge scope is according to the new developments in oligochaete learn, with a unique curiosity in sludge studies.
Research groups from France, Japan, usa, Czech Republic, The Netherlands, Spain, Italy, Germany, Hungary and China current the most recent advancements on annelid experiences and in addition mirror a balanced mix of geographical components, in addition to organic topics.
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Additional resources for Aquatic Oligochaete Biology IX: Selected Papers from the 9th Symposium on Aquatic Oligochaeta, 6–10 October 2003, Wageningen, The Netherlands
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Y. Kim & G. S. Stent, 1984. Embryonic origin of cells in the leech Helobdella striserialis. Developmental Biology 104: 65–85. Weisblat, D. A. & M. Shankland, 1985. Cell lineage and segmentation in the leech. Philosophical Transactions of the Royal Society (London) B312: 39–56. Whitman, C. , 1878. The embryology of Clepsine. Quarterly Journal of Microscopical Science 18: 215–315. Zackson, S. , 1984. Cell lineage, cell–cell interaction, and segment formation in the ectoderm of a glossiphoniid leech embryo.
4c) and followed the cells descending from the host NOPQl. e. Dst- and Pxm-cells) in a normal fashion. When Pxm-cells derived from the host NOPQl were followed, nearly all of the Pxm-cells (9/11 cases) that generated cell bandlets successfully were found with single bandlets (see Fig. 5a); in no cases did these cells gave rise to three bandlets. This suggests that these Pxm-cells assume the N fate. Given that the Pxm-cells in intact embryos assume the OPQ fate (see Fig. 3), it is apparent that the fate of NOPQ-derived cells depends on their distance from the site of contact between NOPQ cells rather than their position along the embryonic axis.
In conclusion, this study demonstrates not only the presence of GABA as an inhibitory transmitter in certain neural structures of L. hoffmeisteri, but also it presented detailed three-dimensional organization of all labelled neurons and neural processes in the whole CNS and in some parts of PNS. Our results show that GABA acts as a common neurotransmitter in certain sensory and motor neurons and interneurons. Furthermore, the basic pattern of labelled structures is the same in the tubificid worm, L.