Spindles from the gonads of five insect species were examined after conventional preparation for electron microscopy. The aim of the study was to determine (1) the range of variation of the spindle membranes between mitotic and meiotic cells and (2) the correlation of possible differences with the microtubule content of the spindles. The study involved four moth species, Ephestia kuehniella, Ph...

Despite the important roles played by insects in most ecosystems, surprisingly little is known about how anthropogenic pollutants or their mixtures interact to affect insect populations. The independent and joint actions of selenate and methylmercury on a ubiquitous insect detritivore, Megaselia scalaris (Loew), were determined in this study. Ovipositing females did not distinguish between untr...