Comment on "Spin-1 aggregation model in one dimension"

M. Girardi and W. Figueiredo have proposed a simple model of aggregation in one dimension to mimic the self-assembly of amphiphiles in aqueous solution [Phys. Rev. E 62, 8344 (2000)]. We point out that interesting results can be obtained if a different set of interactions is considered, instead of their choice (the s=1 Ising model).Comment: Accepted for publication in Phys. Rev.

Boll weevil in South America.

bitstream/item/145707/1/1994FL001-CAmpanhola-boll-2405.pd

Some phytoseiid mites from the South Pacific, with descriptions of new species and a definition of the Amblyseius largoensis species group.

Species of Phytoseiidae collected in Fiji, Vanuatu (New Hebrides) and New Caledonia in 1979 and Cook Islands in 1981 are listed. Amblyseius fijiensis n. sp. and A. herbicoloides n. sp. belong to the largoensis species group, which, as defined, comprises 9 species, 7 of which are Known only from the Southern Hemisphere. Amblyseius (Indoseiulus) hebridensis n. sp. is also described

Suitability of the spider mite Tetranychus evansi as prey for phytoseiulus persimilis.

Experiments conducted to evaluate the suitability of T. evansi as a source of food for P. persimilis revealed that the primary factor responsible for the low oviposition rate and vurvivorship of the predator when fed T. evansi was the low amount of food ingested. P. persimilis detected and initiated feeding on T. evansi equaly as well as on T. urticae. However, a feeding depressant was apparently responsible for a longer time spent by P. persimilis feeding on eggs of T. evansi than on eggs of T. urticae. Eggs of the former prey were totally consumed only occasionally. The depressant effect influenced subsequent feeding on T. urticae, increasing the time requered for consomption and the number of partially consumed eggs for at least 3 days