Abstract The non-native African tuliptree, Spathodea campanulata (P. Beauv), is widely distributed in altered Neotropical environments, where hummingbirds are important pollinators. We investigated the assemblage of which fed on its nectar and described their behavior, to understand possible influences exotic tree territorial behavior an environment southeastern Brazil. Seven species flower res...

a group of palestinians became refugees in neighboring arab countries after their homeland was occupied by israel. other part of the population continued to reside in the occupied country at karate gerbil and ghazi, but they have lost the peace, and the political stability and establishment. consequently, this disordered situation affected palestinian poetry.refugee status, exile, massacre, pil...

The socially parasitic ant genus Myrmoxenus varies strongly in fundamental life history traits, such as queen-worker ratio, the timing of sexual production, and mating behavior. Myrmoxenus queens generally take over nests of Temnothorax ants, kill the resident queen by throttling, and force the workers to take care of the social parasite's brood. Young queens of M. ravouxi and other species pro...

La civilisation islamique joue un role efficace non seulement a enrichir la occidentale mais encore humaine. Son apport manifeste dans tous les domaines. En mettant l'accent sur tel role, nous pouvons dissiper le mythe d'exceptionnalisme selon lequel est meilleure et exceptionnel utilisant pour accuser l'islam par l'arriere, justifier racisme antimusulman domination de l'Occident quelques pays ...

after occupation of palestine by zionists in 1948, some of palestinians became refugees to adjacent arabic countries and some of other people were inhabited inside the occupied land, particularly in west bank (of jordan river) and gaza strip. thence, palestinians never saw political tranquility, stability, and equilibrium. consequently, contemporary poetry was also affected by such chaotic circ...

Microbes have the potential to be highly cooperative organisms. The archetype of microbial cooperation is often considered to be the secretion of siderophores, molecules scavenging iron, where cooperation is threatened by "cheater" genotypes that use siderophores without making them. Here, we show that this view neglects a key piece of biology: siderophores are imported by specific receptors th...