View source for Medical Entomology and Zoology (2001) 52, 255-257

{{Publication
|Publication authors=Kazuyoshi Fujimoto
|Publication date=2001
|dc:title=Morphogenetic diapause of engorged ''[[Amblyomma testudinarium]]'' Koch nymphs (Acari: Ixodidae) induced by short-day photoperiods
|Publication journal=Medical Entomology and Zoology
|prism:volume=52 (3)
|prism:startingPage=255
|Last page=257
|Publication abstract=In order to clarify whether or not engorged ''Amblyomma testudinarium'' Koch nymphs exhibit morphogenetic diapause, their development was observed at 25°C under four photoperiodic conditions (10L-14D, 11L-13D, 12L-12D, and 16L-8D). The molting of the engorged nymphs was little affected by the exposure to 12L-12D and 16L-8D photoperiods. However, the molting was retarded or arrested by the exposure to 10L-14D and 11L-13D photoperiods. These results suggest that engorged ''A. testudinarium'' nymphs enter morphogenetic diapause under short-day photoperiods. Judging from the percentage of molting, their critical photoperiod for the induction of diapause appeared to be close to 11 hr. Thus, a part of the ''A. testudinarium'' nymphs that are active in autumn enter morphogenetic diapause and hibernate in the engorged state.
|AbstractCC=Yes
|Research topic=general biology - morphology - evolution
|Is book=No
}}
{{Pest record
|Pest=Amblyomma testudinarium
|Country=Japan
|Quarantined=No
}}