| feminization of the isopod cylisticus convexus after transinfection of the wvulc wolbachia strain of armadillidium vulgare. | reproductive parasites such as wolbachia are able to manipulate the reproduction of their hosts by inducing parthenogenesis, male-killing, cytoplasmic incompatibility or feminization of genetic males. despite extensive studies, no underlying molecular mechanism has been described to date. the goal of this study was to establish a system with a single wolbachia strain that feminizes two different isopod species to enable comparative analyses aimed at elucidating the genetic basis of feminization. ... | 2015 | 26047139 |
| a note on the relative photosensory effect of polarized light. | experiments were made to compare the stimulating effectiveness of vertically and horizontally polarized lights and non-polarized lights of equal intensity upon phototropic movements of the beetle tetraopes tetraopthalmus; and to compare the effectiveness of two light beams polarized at right angles to one another upon phototropic orientation of the land isopod cylisticus convexus. tetraopes is positively, and cylisticus, negatively phototropic. tests were also made of the intensities of horizont ... | 1924 | 19872110 |
| on the mechanism of tonic immobility in vertebrates. | 1. the durations of successive periods of induced tonic immobility in the lizard anolis carolinensis was examined as a function of temperature. an automatic recording method was employed and observations were made of 12,000 to 15,000 immobilizations with six animals over a temperature range of 5 degrees to 35 degrees c. during 5 months. 2. the durations of the immobile periods were found to vary rhythmically in most cases. the reciprocal of the duration of the rhythm, i.e., the rate of change of ... | 1928 | 19872431 |
| [determination and inheritance of the sex in various oniscoidea. ii. inheritance of monogeny in cylisticus convexus]. | | 1953 | 13078964 |
| multiple conserved heteroplasmic sites in trna genes in the mitochondrial genomes of terrestrial isopods (oniscidea). | mitochondrial genome structure and organization are relatively conserved among metazoans. however, in many isopods, especially the terrestrial isopods (oniscidea), the mitochondrial genome consists of both ∼14-kb linear monomers and ∼28-kb circular dimers. this unusual organization is associated with an ancient and conserved constitutive heteroplasmic site. this heteroplasmy affects the anticodon of a trna gene, allowing this single locus to function as a "dual" trna gene for two different amino ... | 2015 | 25911226 |
| effect of temperature and radiation stresses on the survivorship of isopods: armadillidium vulgare and cylisticus convexus. | | 1971 | 5087761 |
| wolbachia endosymbiont responsible for cytoplasmic incompatibility in a terrestrial crustacean: effects in natural and foreign hosts. | wolbachia bacteria are vertically transmitted endosymbionts that disturb the reproduction of many arthropods thereby enhancing their spread in host populations. wolbachia are often responsible for changes of sex ratios in terrestrial isopods, a result of the feminization of genotypic males. here we found that the wolbachia hosted by cylisticus convexus (wcc) caused unidirectional cytoplasmic incompatibility (ci), an effect commonly found in insects. to understand the diversity of wolbachia-induc ... | 2001 | 11488969 |