TL;DR: The slugs were found on wasps’ nests despite the presence of the owners on the nests and ate eggs, larvae, and presumably cell walls of the nests.
Abstract: Nest predation is an important factor in the colony mortality of paper wasps. Although a variety of animals are known to prey on paper wasp nests, colony failure of unknown cause often occurs in the field, and the existence of still-unknown predators is possible. Here, I report predation on nests of paper wasps, Polistes chinensis antennalis, by introduced terrestrial slugs, Lehmannia valentiana. The slugs were found on the wasps’ nests despite the presence of the owners on the nests and ate eggs, larvae, and presumably cell walls of the nests. This is the first report of predation on paper wasp nests by slugs.
TL;DR: In this article, the haplotype number 2n = 40 and haploid number n = 20 for the slug Lehmannia melitensis has been determined, and the chromosome values being considerably different from those reported for slugs belonging to other limacid genera support the notion that the genus is particular within the family Limacidae.
Abstract: SUMMARYDiploid number 2n = 40 and haploid number n = 20 for the slug Lehmannia melitensis have been determined. These chromosome values being considerably different from those reported for slugs belonging to other limacid genera support the notion that the genus Lehmannia is particular within the family Limacidae. Nucleolus organizer regions (NORs) and C-banding pattern of L. melitensis are described.
TL;DR: Papillary tumors of the skin of the land invertebrate Lehmannia poirieri (a gastropod) could not be induced by using a potent vertebrate carcinogen, but with the same agent 7,12‐dimethylbenz (a) anthracene papillary tumors can readily be induced in mice.
Abstract: Papillary tumors of the skin of the land invertebrate Lehmannia poirieri (a gastropod) could not be induced by using a potent vertebrate carcinogen. With the same agent 7,12-dimethylbenz (a) anthracene papillary tumors can readily be induced in mice. The resistance of this invertebrate to a known vertebrate carcinogen is discussed and the ramifications are conjectured.