Many animals inhabit spatially confined shelters that provide protection but impose sensory and energetic constraints. In the Mexican jumping bean moth, Cydia saltitans , larvae use saltatory (“jumping”) movements to relocate their shelters (i.e., parasitized seeds) away from aversive stimuli, potentially at a high energetic cost. We tested whether these movements trade off with larval energetic reserves, development, and shel...

Leucaena leucocephala (leucaena) is an important agroforestry tree of tropics and subtropics due to its protein rich foliages, ability to grow on poor soils, and high level of tolerance to various stresses including drought and diseases. We hypothesized that leucaena have a unique set of genes which confer tolerance to various abiotic and biotic stresses and these genes are either absent or not expressed in other legumes that...

Several studies have demonstrated the hybrid origin of Squalius alburnoides , a complex of diploid, triploid and tetraploid fish, with Squalius pyrenaicus as the maternal ancestor and an Anaecypris hispanica ‐like species as the paternal ancestor. The aim of this study was to assess patterns of genetic diversity and similarity between sympatric forms of the different ploidy levels of S. alburnoides and related parental species...

The pipefishes Syngnathus abaster and S. acus have paired testes of atypical organization. Each testis is a hollow tube consisting of a single germinal compartment of the tubular type. During the reproductive period, the germinal epithelium consists of small spermatocysts containing spermatogonia or primary spermatocytes. Cysts of older germ cells, such as secondary spermatocytes and spermatids were never observed. Developing...