caa a22 4500 469061030 CHVBK 20180323132857.0 cr unu---uuuuu 170328e19920501xx s 000 0 eng 10.1007/BF01219105 doi (NATIONALLICENCE)springer-10.1007/BF01219105 Effects of precocenes on vitellogenesis in the adult female tick, Ornithodoros moubata (Acari: Argasidae) [Elektronische Daten] [DeMar Taylor, Yasuo Chinzei, Ken Miura, Katsuhiko Ando] Vitellogenin (Vg) concentrations in the hemolymph and ovarian development were studied inOrnithodoros moubata after treatment with precocenes 1 (P1) and 2 (P2). Precocene was dissolved in acetone or DMSO and topically applied to the dorsal surface of ticks: (1) at adult ecdysis; (2) 24 h before engorgement; (3) immediately after engorgement; and (4) 24 h after engorgement. Subsequently, P1 and P2 were dissolved in olive oil and injected through the gonopore into the body cavity 24 h after engorgement. Vitellogenin concentration was measured on days 5 and 10 after engorgement and ovarian development was scored on day 10, 20 or 30. Oviposition was also recorded and the average weight of eggs laid by females was determined. No differences in concentration of Vg in the hemolymph occurred between the control ticks and ticks treated topically or by injection with P1 and P2. Precocene did not suppress the synthesis of Vg inO. moubata. However, oviposition was reduced in ticks that survived repeated treatment with high doses of P2 dissolved in acetone. Elsevier Science Publishers B.V., 1992 Taylor DeMar Department of Medical Zoology, School of Medicine, Mie University, Tsu, Japan aut Chinzei Yasuo Department of Medical Zoology, School of Medicine, Mie University, Tsu, Japan aut Miura Ken Department of Medical Zoology, School of Medicine, Mie University, Tsu, Japan aut Ando Katsuhiko Department of Medical Zoology, School of Medicine, Mie University, Tsu, Japan aut Experimental & Applied Acarology Kluwer Academic Publishers 14/2(1992-05-01), 123-136 0168-8162 14:2<123 1992 14 10493 https://doi.org/10.1007/BF01219105 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01219105 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Taylor DeMar Department of Medical Zoology, School of Medicine, Mie University, Tsu, Japan aut NATIONALLICENCE 700 1- Chinzei Yasuo Department of Medical Zoology, School of Medicine, Mie University, Tsu, Japan aut NATIONALLICENCE 700 1- Miura Ken Department of Medical Zoology, School of Medicine, Mie University, Tsu, Japan aut NATIONALLICENCE 700 1- Ando Katsuhiko Department of Medical Zoology, School of Medicine, Mie University, Tsu, Japan aut NATIONALLICENCE 773 0- Experimental & Applied Acarology Kluwer Academic Publishers 14/2(1992-05-01), 123-136 0168-8162 14:2<123 1992 14 10493 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer