PubMed Health⌕ Search

Biomedical subjects

J Woodring

Publications and source records attributed to J Woodring.

5 recordsLinked to original sources
PubMed2000

Variation in JH synthesis rate in mature honeybees and its possible role in reprogramming of hypopharyngeal gland function.

Juvenile hormone (JH) synthesis was higher in followers than in dancers, which suggests that higher JH levels in followers might be an internal motivational stimulus to induce them to leave the hive to search for food. The positive correlation of in vitro JH synthesis rate and alpha-glucosidase activity in the hypopharyngeal gland suggests that JH is involved in the reprogramming of the hypopharyngeal gland from producing larval food (immature adults) to production of alpha-glucosidase in mature adults.

Aging↗
PubMed1998

Short report: Diapause, transovarial transmission, and filial infection rates in geographic strains of La Crosse virus-infected Aedes triseriatus.

La Crosse (LAC) virus is transmitted horizontally to vertebrates and vertically to progeny by Aedes triseriatus mosquitoes, and in northern midwestern states, this virus overwinters in diapausing eggs of the vector. In Florida, the vector remains active throughout the year and does not diapause. To determine if there is an association between diapause and vertical transmission efficiency of LAC virus, transovarial transmission (TOT), and filial infection (FI) rates were determined for geographic strains of Ae. triseriatus. The TOT rates were not significantly different for Ae. triseriatus originating from Florida (78%) and those from Wisconsin (85%). The FI rates did differ significantly between the two groups (33% and 45%, respectively, for the Florida and Wisconsin mosquitoes). Furthermore, a line of mosquitoes was selected from a Wisconsin colony that had a reduced diapause phenotype (the AD- strain). While this strain displayed TOT rates that were the same as the other Wisconsin mosquitoes (85%), the FI rates were significantly lower (34%), indicating a reduction in TOT efficiency. The role of vertical transmission capacity in LAC virus endemicity remains to be determined.

Aedes↗