BIOGEOGRAFIA DOS ENXAMES DE GAFANHOTOS SCHISTOCERCA CANCELLATA, HISTÓRICO DE OCORRÊNCIAS E AS IMPLICAÇÕES PARA A AGRICULTURA BRASILEIRA / BIOGEOGRAPHY OF LOCUST SWARMS SCHISTOCERCA CANCELLATA, HISTORY OF OCCURRENCES AND IMPLICATIONS FOR BRAZILIAN AGRICULTURE
نویسندگان
چکیده
منابع مشابه
Ancient trans-Atlantic flight explains locust biogeography: molecular phylogenetics of Schistocerca.
The desert locust (Schistocerca gregaria) has been an important agricultural pest at least since biblical times. Although the ecology, physiology and behaviour of this insect species have been well characterized, its biogeographical origins and evolutionary history are more obscure. Schistocerca gregaria occurs throughout Africa, the Middle East and Western Asia, but all other species in the ge...
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Resumo. Neste artigo é analisada a influência dos parâmetros de aprendizagem de algoritmos baseados em enxames e propostas estratégias para a atualização de políticas em ambientes dinâmicos. Nós verificamos que os parâmetros de aprendizagem quando ajustados inadequadamente podem ocasionar atrasos no processo de aprendizagem ou convergir para uma política não-satisfatória. Além disso, esse probl...
متن کاملThe energetics of the jump of the locust Schistocerca gregaria.
The anatomy of the metathoracic leg is redescribed with particular reference to storage of energy in cuticular elements and the way in which the stored energy is used in jumping. The jump of adult male locusts requires an energy of 9 mJ and that of the female requires 11 mJ. The semilunar processes of each metafemur store 4 mJ at a stress of 15 N, and the extensor tibiae apodeme stores a furthe...
متن کاملNeuropeptide-degrading endopeptidase activity of locust (Schistocerca gregaria) synaptic membranes.
Locust adipokinetic hormone (AKH, pGlu-Leu-Asn-Phe-Thr-Pro-Asn-Trp-Gly-Thr-NH2) was used as the substrate to measure neuropeptide-degrading endopeptidase activity in neutral membranes from ganglia of the locust Schistocerca gregaria. Initial hydrolysis of AKH at neural pH by peptidases of washed neural membranes generated pGlu-Leu-Asn and Phe-Thr-Pro-Asn-Trp-Gly-Thr-NH2 as primary metabolites, ...
متن کاملThe vibrational startle response of the desert locust Schistocerca gregaria.
Substratum vibrations elicit a fast startle response in unrestrained quiescent desert locusts (Schistocerca gregaria). The response is graded with stimulus intensity and consists of a small, rapid but conspicuous movement of the legs and body, but it does not result in any positional change of the animal. With stimuli just above threshold, it begins with a fast twitch of the hindlegs generated ...
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ژورنال
عنوان ژورنال: Brazilian Journal of Development
سال: 2020
ISSN: 2525-8761,2525-8761
DOI: 10.34117/bjdv6n12-562