| efficacy of piper (piperaceae) extracts for control of common home and garden insect pests. | extracts from three species of the plant family piperaceae, piper nigrum [l.], piper guineense [schum & thonn, and piper tuberculatum [jacq.], were tested for efficacy against insects from five orders. all three species contain isobutyl amides, plant secondary compounds that act as neurotoxins in insects. these materials are considered safe to mammals because piper spp. were used for centuries for spice and medicinal purposes. when 24-h p. nigrum lc50 values were compared between common insect p ... | 2004 | 15384353 |
| olfactory receptors on the maxillary palps of small ermine moth larvae: evolutionary history of benzaldehyde sensitivity. | in lepidopterous larvae the maxillary palps contain a large portion of the sensory equipment of the insect. yet, knowledge about the sensitivity of these cells is limited. in this paper a morphological, behavioral, and electrophysiological investigation of the maxillary palps of yponomeuta cagnagellus (lepidoptera: yponomeutidae) is presented. in addition to thermoreceptors, co(2) receptors, and gustatory receptors, evidence is reported for the existence of two groups of receptor cells sensitive ... | 2007 | 17372741 |