By Salvatore Ragusa (auth.), Fabio Bernini, Roberto Nannelli, Giorgio Nuzzaci, Enrico de Lillo (eds.)
The phrases reported via Serge Kreiter throughout the assembly spring to mind. they can list precisely the state of affairs of Acarology in Europe and on the earth: "I imagine that during many eu nations there are only a few complete time acarologists. it's very infrequent to have new positions to be had . . . . And public cash, from the ecu neighborhood but additionally from nationwide nations, is particularly difficult to get should you are looking to paintings on mites . . . . may well acarological institutions in Europe (Eur. A. Ac. and S. I. A. L. F) interact or, larger, get married?" So, the fourth symposium of the ecu Acarologists has not just been the party to have an concept on which course the examine is addressed this day, but additionally it mentioned the problems of our "scientific hranch". at the foundation of the displays and invited papers we had evidences of a "new" Acarology in accordance with glossy thoughts and techniques of investigations but additionally the significance, usually sheltered no matter if of suitable price, of the "old" Acarology made at the alpha taxonomy and simple stories. So, a "new" Acarology wishes the "old" one. during this context, the wish to place jointly the ecu acarologists has been bobbing up. This truth, of political that means, can absolutely increase the acarological circulate and the dialogue in this aspect confirmed truly the significance of numerous different actions and efforts during this path. we are hoping that the assembly in Siena will symbolize a significative stone for the development of Acarology.
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Extra info for Acarid Phylogeny and Evolution: Adaptation in Mites and Ticks: Proceedings of the IV Symposium of the European Association of Acarologists
Proceedings (~/ the National Academy o/Sciences o/the United States (i America, 95: 10665-lO670. , 1998 - A Hox class 3 orthologue from the spider Cupiennilts salei is expressed in a Hox-gene like fashion. Development Genes and Evolu/ion, 208: 586. , 1992 - Principles of Acarology. B. International, Wallingford: xviii + 563 pp. , 1996 - Class 3 Hox genes in insects and the origin of zen. Proceedings of the National Academy (i Sciences of the United States of America, 93: 8479-8484. , 1996 - Narrow Roads of Gene Land.
Figure 3 shows clearly that the Claparede's organs ori- Mites as models in development and genetics 23 Fig. 2 - Close up view of the Claparede's organ (CO) on the right side of an Archegozeles larva. The cup shaped seta SI (S) on the coxa of leg I (Ll) covers the Claparede's organ when it is retracted. Scale bar~20 pm. ginate at the base of legs II. This observa tion together with Alberti 's (1979) beautiful ultrastructural work on acariform mite genital papillae and Claparede's organs suggests strongly that these organs are serially homologous.
Aureum in Europe; 2) the mite C. aurea derives from common ancestry with C. alpina, but has another as yet unidentified European currant species as its host and has switched to R. aureum. Conclusions It appears that the CecidophyoPsis mites specialize onto one or two plant species. g. volatile recognition, plant defence reactions). Specialization onto a Single host is not necessary for either plant gall formation or the alternate free living life strategy. The widespread, ancestral, ability to form galls in Cecidophyopsis has been lost in the lineage to two closely related mites.
Acarid Phylogeny and Evolution: Adaptation in Mites and Ticks: Proceedings of the IV Symposium of the European Association of Acarologists by Salvatore Ragusa (auth.), Fabio Bernini, Roberto Nannelli, Giorgio Nuzzaci, Enrico de Lillo (eds.)