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Scientific American, 2014
The article reports on the behavior of the species of floodplain-dwelling ant, Formica selysi, that nests throughout the Pyrenees and the Alps.
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The article reports on the behavior of the species of floodplain-dwelling ant, Formica selysi, that nests throughout the Pyrenees and the Alps.
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Humoral Immunity in Cecropia Pupae
1981There are four main reasons to study the factors which in nature regulate the equilibrium between insects and bacteria. Each of these reasons is of such a nature that it could be the subject for a review of its own. However, we will not elaborate but only state the arguments briefly as follows: 1. More than 106 insect species have been described
H G, Boman, H, Steiner
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Haemolymph ecdysone concentrations in Hyalophora cecropia pupae, dauer pupae and adults
Journal of Insect Physiology, 1979Abstract Haemolymph ecdysone concentrations were determined by radioimmunoassay in diapausing pupae, pharate adults, adults, and chilled dauer pupae. The concentration in diapausing pupae after 6 months chilling (5.35 pg/μl) increased dramatically after 3 days at 27°C (>200 pg/μl) and then decreased to low levels in adult females (1.63 pg/μl).
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The Origin and Evolution of the Pupa
The Canadian Entomologist, 1958There have been several speculations as to the origin and significance of the pupa. One that has had considerable vogue is based on the interpretation, by Lubbock (1883), Berlese (1913) and others, of the larva as a free-living embryo prematurely hatched before it has attained the form characteristic of the adult. A nymph, according to this theory, has
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