منابع مشابه
First records of melanistic Euglossa (Hymenoptera: Apidae): evolutionary implications.
Neotropical orchid bees (Hymenoptera: Apidae: Euglossina) are conspicuous due to their vivid and metallic colors. Nevertheless, except for a few comments, usually concerning the appropriateness of using coloration as a taxonomic character (e.g. Rebêlo and Moure, 1996; Nemésio, 2005, 2009; Bembé, 2007), virtually nothing is known about color production and evolution in orchid bees. Based on stud...
متن کاملLocust flight
Under certain environmental and population conditions some species (the locusts) of Acridid Orthoptera swarm and are capable of migrating hundreds of miles using flight as the primary means of locomotion. Locust flight is a behavior that lends itself to analysis from many approaches and that has attracted considerable research attention for many years. In particular the role of the nervous syst...
متن کاملRetinally-generated saccadic suppression of a locust looming-detector neuron: investigations using a robot locust.
A fundamental task performed by many visual systems is to distinguish apparent motion caused by eye movements from real motion occurring within the environment. During saccadic eye movements, this task is achieved by inhibitory signals of central and retinal origin that suppress the output of motion-detecting neurons. To investigate the retinally-generated component of this suppression, we used...
متن کاملLocUsT: a tool for checking usage policies
We introduce LocUsT, a tool to statically check whether a given resource usage complies with a local policy. LocUsT takes as input an abstraction of the behaviour of a program, called a usage. Usages are expressed in a simple process calculus, and over-approximate all the resource accesses of the program itself. As additional input, LocUsT takes a policy that defines the allowed resource access...
متن کاملPharmacological studies on a locust neuromuscular preparation.
1. The structure-activity relationships of agonists of the locust excitatory neuromuscular synapse have been reinvestigated, paying particular attention to the purity of compounds, and to the characteristics and repeatability of the muscle response. The concentrations of compounds required to stimulate contractions of the retractor unguis muscle equal in force to the neurally evoked contraction...
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ژورنال
عنوان ژورنال: Psyche: A Journal of Entomology
سال: 1893
ISSN: 0033-2615,1687-7438
DOI: 10.1155/1893/40195