Transovarial-transmission
Guides
Aedes cinereus
Minute Floodwater Mosquito
Aedes cinereus, commonly known as the minute floodwater mosquito, is a widespread mosquito species found across northern North America and Europe. It is notable for its aggressive biting behavior toward humans and its role as a vector for arboviruses, particularly Ockelbo virus in northern Europe. The species thrives in wetland habitats with semi-permanent water bodies and demonstrates adaptability by occasionally breeding in artificial containers. Research has also demonstrated its competence for Lammi virus, an insect-specific orthoflavivirus with possible transovarial transmission.
Eurymelinae
Eurymelinae is a subfamily of leafhoppers (Cicadellidae) with worldwide distribution. Members are phloem-feeding insects that maintain complex obligate symbioses with microorganisms including bacteria (Sulcia, Nasuia, Sodalis) and yeast-like fungi (Ophiocordycipitaceae) to synthesize essential amino acids. The subfamily exhibits notable ecological diversity, including ant-attended species that engage in trophobiosis.
Javesella pellucida
Javesella pellucida is a delphacid planthopper with a broad geographic distribution spanning Europe, Asia, Africa, and the Americas. It is documented as a pest of cultivated plants, with confirmed feeding associations on rice (Oryza sativa) and Italian ryegrass (Lolium multiflorum). The species exhibits wing dimorphism with distinct macropterous and brachypterous forms, and serves as a vector for multiple plant viruses including European wheat striate mosaic virus and Festuca leaf streak virus. Transovarial virus transmission has been demonstrated, with 85-96% of progeny from infected females becoming infective.
Ornithodoros turicata
relapsing fever tick
Ornithodoros turicata is a soft tick (family Argasidae) found in the midwestern and southwestern United States. It is the primary vector of Borrelia turicatae, the spirochete agent of tick-borne relapsing fever in humans. The tick has been documented feeding on at least 27 vertebrate host species across mammals, birds, reptiles, and amphibians. It exhibits autogenous reproduction (egg production without a bloodmeal) and transovarial transmission of spirochetes, enabling pathogen maintenance across generations.