Neotropical Rhagoletis species are arranged in four groups: nova,psalida,striatella and ferruginea, which include 18 species. On both sides of the Andes, the evolution of morphological differences among these groups has been suggested to be related to the Andes uplift process. In order to test this hypothesis, a phylogenetic analysis of morphological and molecular data was performed. The result...

Marco Leonetti, and Claudio Conti, 1 Dep. of Physics, University “Sapienza”, Piazzale Aldo Moro 2, 00185 Roma, Italy 2 CNR-ISC Institute for Complex Systems Dep. of Physics, University “Sapienza”, Piazzale Aldo Moro 2, 00185 Roma, Italy and ∗Corresponding author: [email protected], current address: Photonic Crystal Group, ICMM,C.Sor Juana Ins de la Cruz, 3, Cantoblanco, 28049 Madrid, Spain.

Parents can provide considerably more than genes to their offspring, and parents often vary in the quality of their extra-genetic contributions. This variation in parental quality can signi®cantly affect offspring ®tness and thus has been widely investigated by behavioural ecologists, particularly in the context of sexual selection and mate choice (Weatherhead & Robertson, 1979; Clutton-Brock, ...

Zusammenfassung Vor etwas mehr als 50 Jahren, am 8. Dezember 1971, besetzten Jugendliche ein größeres Gebäude in Berlin und nannten es Georg-von-Rauch-Haus. Die Autoren nehmen das Jubiläum zum Anlass, um über die Frage nachzudenken, was sich aus den im Haus gemachten Erfahrungen mit Selbstorganisation für heutige Jugendhilfe lernen lässt. Sie untersuchen insbesondere Konflikte zwischen Jugendli...