Tospovirus transmission depends on thrips ontogeny.
The acquisition of tospoviruses by thrips vectors is restricted to a well defined time period during the first and early second larval stages, when there is a temporary association between mid-gut, visceral muscles and salivary glands. This association is the result of a displacement of the brain into the prothoracic region by enlarged cibarial muscles. The subsequent loss of this association leads to a strong input of virus particles into the malpighian tubules via the haemocoel. Mechanical transmission through excrement and oviposition by adults is a possible alternative mode of virus transmission that requires investigation.
Moritz
Gerald
G
Department of Developmental Biology, University of Halle, Domplatz 4, 06108 Halle (Saale), Germany. moritz@zoologie.uni-halle.de
Kumm
Sandra
S
Mound
Laurence
L
D000818:Animals; D002478:Cells, Cultured; D018562:Disease Transmission, Infectious; D007303:Insect Vectors / Q000502:physiology / Q000821:virology*; D007313:Insecta / Q000502:physiology / Q000821:virology*; D007422:Intestines / Q000821:virology; D007814:Larva / Q000821:virology; D012469:Salivary Glands / Q000821:virology; D017865:Tospovirus / Q000502:physiology*