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- W2952803349 abstract "Eusocial insect colonies are defined by extreme variation in reproductive activity among castes, but the ancestral conditions from which this variation arose are unknown. Investigating the factors that contribute to variation in reproductive physiology among solitary insects that are closely related to social species can help to fill this gap. We experimentally tested the role of nutrition, juvenile hormone, and social cues on reproductive maturation in solitary alkali bees (Halictidae: Nomia melanderi). We find that alkali bee females emerge from overwintering with small Dufour's glands and small ovaries, containing oocytes in the early stages of development. Oocyte maturation occurs rapidly, and is staggered between the two ovaries. Lab-reared females reached reproductive maturity without access to mates or nesting opportunities, and many had resorbed oocytes. Initial activation of these reproductive structures does not depend on pollen consumption, though dietary protein or lipids may be necessary for long-term reproductive activity. JH is likely to be a limiting factor in alkali bee reproductive activation, as females treated with JH were more likely to develop mature oocytes and Dufour's glands. Unlike for related social bees, the effects of JH were not suppressed by the presence of older, reproductive females. These results provide important insight into the factors that influence reproductive activity in an important native pollinator, and those that may have been particularly important in the evolution of reproductive castes." @default.
- W2952803349 created "2019-06-27" @default.
- W2952803349 creator A5015140572 @default.
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- W2952803349 date "2017-01-01" @default.
- W2952803349 modified "2023-09-23" @default.
- W2952803349 title "Juvenile hormone, but not nutrition or social cues, affects reproductive maturation in solitary alkali bees (<i>Nomia melanderi</i>)" @default.
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- W2952803349 doi "https://doi.org/10.1242/jeb.162255" @default.
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