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Insect Morphological Diversification Through the Modification of Wing Serial Homologs
Gene expression and functional analyses revealed central roles for the key wing selector genes, vestigial and scalloped, in the hypomeron and the denticular outgrowth formation in the mealworm beetle Tenebrio molitor, suggesting modification rather than loss of dorsal appendages has provided an additional diversifying mechanism for the insect body plan.
A visible dominant marker for insect transgenesis
It is shown that ectopic Bm-arylalkylamine-N-acetyl transferase expression lightens coloration in ladybird beetle Harmonia axyridis and fruit fly Drosophila melanogaster, highlighting the potential usefulness of this marker for transgenesis in diverse insect taxa.
Vestigial and scalloped in the ladybird beetle: a conserved function in wing development and a novel function in pupal ecdysis
These results can be applied to the production of a flightless ladybird beetle for biological control purposes using larval RNAi and an unexpected novel function of sd in pupal ecdysis is demonstrated.
The role of doublesex in the evolution of exaggerated horns in the Japanese rhinoceros beetle
Investigation of the function of the conserved sex‐determination gene doublesex in the Japanese rhinoceros beetle using RNA interference shows that the sex‐specific T. dichotomus dsx isoforms have an antagonistic function for head horn formation and only the male isoform has a role for thoracic horn formation.
Rhinoceros beetle horn development reveals deep parallels with dung beetles
Deep parallels in the development of rhinoceros and dung beetle horns are highlighted, suggesting either that both horn types arose in the common ancestor of all scarabs, a surprising reconstruction of horn evolution that would mean the majority of scarab species actively repress horn growth, or that parallel origins of these extravagant structures resulted from repeated co-option of the same underlying developmental processes.
A Baculovirus Immediate-Early Gene, ie1, Promoter Drives Efficient Expression of a Transgene in Both Drosophila melanogaster and Bombyx mori
It is suggested that the ie1 promoter can be used as an efficient expression driver in a diverse range of insect species.
Functional conservation and diversification of yellow-y in lepidopteran insects.
Embryonic RNAi analysis in the firebrat, Thermobia domestica : Distal-less is required to form caudal filament
This work applied RNA interference (RNAi) as a gene functional analysis tool in the ametabolous insect, the firebrat, Thermobia domestica, and tested the utility of RNAi using dsRNA based on the sequence of Distal-less (Dll) homolog from TherMobia.
Wing serial homologs and the origin and evolution of the insect wing.
What serial homologs can tell us about the origin of insect wings
How the wing serial homologs identified in recent evo-devo studies have provided a new angle through which this century-old conundrum can be explored is discussed and what is learned so far is reviewed.