Nuptial feeding encompasses any form of nutrient transfer from the male to the female
during or directly after courtship and/or copulation. In insects, nuptial gifts may take the form …

Research into Heliconius butterflies has made a significant contribution to evolutionary
biology. Here, we review our understanding of the diversification of these butterflies …

THIS PROJECT grew out of our conviction that there was need for a book that would review
insect reproductive behavior and related topics from an evolutionary perspective, particularly …

Julian Shepard, and Jon Yates were unstinting with valuable information and references. I
am particularly grateful to Crista Deeleman-Reinhold, KC Emerson, Thomas Barr, Roger …

Assortative mating by size, one of the most common mating patterns in natural populations,
may be explained by three hypotheses:(1) mate choice, whereby large males, large females …

Mating frequency of sexually reproducing species is of evolutionary importance because it
affects the rate at which genetic factors can be shuffled in a population (Labine 1964, Burns …

1. Changes in the chemosensory responses and physiological host tolerance of
phytophagous insects and parasitoids may result in new host associations. This paper …

Moths and butterflies (Lepidoptera) generally produce two types of spermatozoa: a typical
nucleated (eupyrene) spermatozoon and a smaller anucleate (apyrene) spermatozoon. The …

Male insects of many species donate nutrients to their females at mating, and the females
can use these nutrients for egg production and somatic maintenance. These male-derived …

Amino acids occur in most floral nectars but their role in pollinator attraction is relatively
unstudied. Nectars of butterfly-pollinated flower tend to have higher concentrations of amino …