نتایج جستجو برای: arthropods
تعداد نتایج: 7453 فیلتر نتایج به سال:
Arthropods associated with sugarcane seven to eleven months old, and with the sedge Cyperus immensus (C.B.CL.) were collected at two monthly intervals over a fifteen month period. The search was carried out in each of four regions in the sugar industry. This work formed part of a project designed to study the predators of the sugarcane borer Eldana sacckarina Walker. Generally greater number of...
mal groups. They have far more species than any other phylum, yet the living species are merely the surviving branches of a much greater diversity of extinct forms. One group of crustacean arthropods, the barnacles, was studied extensively by Charles Darwin. But the origins and the evolution of arthropods in general, embedded in what is now known as the Cambrian explosion, were a source of cons...
It has been suggested that Thaxteriola species and other minute, nonmycelial fungi associated with arthropods have phylogenetic relationships with the Laboulbeniales. However, direct development of the thallus of Thaxteriola from an ascospore of Pyxidiophora has now been discovered. Thaxteriola is specialized for dispersal by mites carried on pine bark beetles; other fungi dispersed by arthropo...
A 5-year study of long-term (40 years) study plots was conducted on the Osceola National Forest in northern Florida to determine how dormant-season fire frequency (annual, biennial, quadrennial, or unburned) affects ground-dwelling macroarthropod use of coarse woody debris in longleaf pine (Pinus palustris Mill.) forests. Pitfall traps were used to sample arthropods near logs or metal drift fen...
Artificial lighting allows humans to be active at night, but has many unintended consequences, including interference with ecological processes, disruption of circadian rhythms and increased exposure to insect vectors of diseases. Although ultraviolet and blue light are usually most attractive to arthropods, degree of attraction varies among orders. With a focus on future indoor lighting applic...
Effective containment of arthropod vectors of infectious diseases is necessary to prevent transmission of pathogens by released, infected vectors and to prevent vectors that escape from establishing populations that subsequently contribute to increased disease. Although rare, past releases illustrate what can go wrong and justify the need for guidelines that minimize risks. An overview of recom...
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