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Immunocompetence, developmental stability and wingspot size in the damselfly Calopteryx splendens L.
The results suggest that the size of wingspot is an indicator of male quality in C.splendens, and the nylon implant encapsulation rate was positively correlated with the density of haemocytes in the haemolymph.
Effect of bacterial infection on antioxidant activity and lipid peroxidation in the midgut of Galleria mellonella L. larvae (Lepidoptera, Pyralidae).
The hypothesis that Bt infection increases the level of oxidative stress in the larval midgut in Galleria mellonella larvae is confirmed and it seems possible that oxidative damage contributes to cell death in the midGut during bacteriosis.
Courtship song and immune function in the field cricket Gryllus bimaculatus
It seems possible that by preferring males according to their courtship song, females might benefit by increasing the parasite resistance of their offspring by choosing males with high immunocompetence.
Evidence for the stress-linked immunocompetence handicap hypothesis in humans
Positive relationships between testosterone, facial attractiveness and immune function (antibody response to a hepatitis B vaccine) in human males are shown and some preliminary evidence that these relationships are moderated by naturally co-occurring cortisol is presented.
Condition dependence of pheromones and immune function in the grain beetle Tenebrio molitor
The results show that pheromones are condition-dependent signals, the quantity of which females use in their mate choice, and the production of the phersomones is affected by the condition of the male.
Interspecific aggression and character displacement in the damselfly Calopteryx splendens
It is suggested that interspecific aggression may have caused character displacement in wing spot size of Calopteryx splendens, because the intensity of aggression towards large‐spotted males is likely to increase with relative abundance of C. virgo males.
The role of juvenile hormone in immune function and pheromone production trade-offs: a test of the immunocompetence handicap principle
The results reflect a general mechanism by which the immunocompetence handicap hypothesis may work in insects and suggest that JH, which is involved in the control of reproduction and morphogenesis, also plays a central role in the regulation of a trade–off between the immune system and sexual advertisement in insects.
Foliar Phenolics are Differently Associated with Epirrita autumnata Growth and Immunocompetence
The quality of available food may affect insect herbivores directly (via growth and survivorship) and/or indirectly (by modifying insect vulnerability to parasitoids and pathogens). We examined the
Attractiveness of women's body odors over the menstrual cycle: the role of oral contraceptives and receiver sex
The results indicate that men can use olfactory cues to distinguish between ovulating and nonovulating women, and the contrasting results between pill users and nonusers may indicate that oral contraceptives demolish the cyclic attractiveness of odors.
Heavy metal pollution disturbs immune response in wild ant populations.
The encapsulation response was elevated in moderate whereas suppressed in high heavy metal levels suggesting higher risk for infections in heavily polluted areas, indicating that the immune system of local ants has not adapted to high contamination level.