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- Robinson, James V.; Allgeyer, Richard
- Biological journal of the Linnean Society 1996 v.58 no.1 pp. 85-98
- Ischnura; color; copulation; demographic statistics; evolution; females; life history; males; spermatozoa
- ... The apparent erratic variation in life history traits, coloration patterns, and behaviours that exists among species within the damselfly genus Ischnura is shown to be interpretable when the species are partitioned into three groups. One group consists of species whose males are missing a pair of stout basal spines on the penultimate segment of their accessory penes. These are the only ischnurans ...
- Trigo, José Roberto; Brown, Keith S. Jr.; Witte, Ludger; Hartmann, Thomas; Ernst, Ludger; Barata, Lauro Euclides Soares
- Biological journal of the Linnean Society 1996 v.58 no.1 pp. 99-123
- Apocynaceae; Arctiidae; Harmonia; Nephila clavipes; Nymphalidae; Solanum; bioassays; butterflies; females; flowers; food plants; larvae; leaves; males; moths; predation; predators; retronecine; weaving
- ... Pyrrolizidine alkaloids (PAs) often serve as chemical mediators of plant-herbivore-predator interactions. Butterflies (Danainae and Ithomiinae) and moths (Arctiidae) usually acquire PAs from plant sources (larval host plants, flowers or withered leaves visited by adults--pharmacophagy) and thereby become chemically protected against predators; they also use PAs as pheromone precursors. Study by GC ...