PREVALENCE OF MALE-KILLER IN A SYMPATRIC POPULATION OF TWO SIBLING LADYBIRD SPECIES, HARMONIA YEDOENSIS AND HARMONIA AXYRIDIS (COLEOPTERA: COCCINELLIDAE)

Prevalence of male-killer in a sympatric population of two sibling ladybird species, Harmonia yedoensis and Harmonia axyridis (Coleoptera: Coccinellidae)

In predatory ladybirds male embryos in clutches of eggs infected with male-killing bacterial endosymbionts do not hatch and are consumed by female hatchlings.Moreover, it is predicted that relora infection with male-killing bacteria should be prevalent in a ladybird population if the fitness advantage to female ladybirds due to the resulting reallo

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Adult stem cells and niche cells segregate gradually from common precursors that build the adult Drosophila ovary during pupal development

Production of proliferative follicle cells (FCs) and quiescent escort cells (ECs) by Chews follicle stem cells (FSCs) in adult Drosophila ovaries is regulated by niche signals from anterior (cap cells, ECs) and posterior (polar FCs) sources.Here we show that ECs, FSCs, and FCs develop from common pupal precursors, with different fates acquired by p

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