Wild Forests
Mostrando 13-23 de 23 artigos, teses e dissertações.
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13. Mamíferos não-voadores do Campus "Luiz de Queiroz", da Universidade de São Paulo, em Piracicaba, Estado de São Paulo. / Non-volant mammals of campus "Luiz de Queiroz", university of São Paulo, Piracicaba, SP, Brazil.
The remaining portion of the Atlantic Forest within the State of Sao Paulo is highly fragmented and most of the remainders are wrapped up in an essentially agricultural mosaic. This study aims local surveying of non-flying mammals, including their distribution and relative abundance within the humanimpacted environments of Campus "Luiz de Queiroz", Universit
Publicado em: 2002
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14. Riqueza e diversidade de mamíferos não-voadores em um mosaico formado por plantios de Eucalyptus saligna e remanescentes de floresta atlântica no município de Pilar do Sul, SP. / Richness and diversity of nonvolant mammals in mosaic of eucalyptus saligna plantations and atlantic forest remnants on Pilar do Sul, SP.
The Atlantic Forest presents high endemism, diversity and richness. However, with the continuous devastation it became one of the most endangered ecosystems of the world. In spite of the high diversity of mammals with many endemic species, the distribution, the ecological patterns and the use of altered environments are practically ignored. The State of São
Publicado em: 2002
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15. Chytridiomycosis causes amphibian mortality associated with population declines in the rain forests of Australia and Central America
Epidermal changes caused by a chytridiomycete fungus (Chytridiomycota; Chytridiales) were found in sick and dead adult anurans collected from montane rain forests in Queensland (Australia) and Panama during mass mortality events associated with significant population declines. We also have found this new disease associated with morbidity and mortality in wil
The National Academy of Sciences.
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16. Passage and Survival of Chlamydospores of Phytophthora cinnamomi Rands, the Causal Agent of Forest Dieback Disease, Through the Gastrointestinal Tracts of Termites and Wild Birds
Chlamydospores of Phytophthora cinnamomi Rands have been shown to survive in the intestinal tracts of termites (Nasutitermes exitiosus) and two species of forest birds indigenous to West Australian jarrah forests. Viable chlamydospores were recovered from bird feces within the normal rate of passage time for food through the gut. The above factors would allo
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17. Domestication of a Mesoamerican cultivated fruit tree, Spondias purpurea
Contemporary patterns of genetic variation in crops reflect historical processes associated with domestication, such as the geographic origin(s) of cultivated populations. Although significant progress has been made in identifying several global centers of domestication, few studies have addressed the issue of multiple origins of cultivated plant populations
National Academy of Sciences.
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18. Genetic Diversity of Eurycoma longifolia Inferred from Single Nucleotide Polymorphisms1[w]
Eurycoma longifolia Jack. is a treelet that grows in the forests of Southeast Asia and is widely used throughout the region because of its reported medicinal properties. Widespread harvesting of wild-grown trees has led to rapid thinning of natural populations, causing a potential decrease in genetic diversity among E. longifolia. Suitable genetic markers wo
American Society of Plant Biologists.
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19. Artificial selection for a secondary sexual character in males of Drosophila silvestris from Hawaii
Drosophila silvestris is endemic to the rain forests of Hawaii Island. In populations from the northeast side, the male foreleg tibia bears about 100 long cilia; these are used as a brush to stimulate the female during courtship. Cyclical family selection for high and low cilia number was carried out on progeny of lines started from single wild isofemales co
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20. Allozymic and chromosomal similarity in two Drosophila species.
D. setosimentum and ochrobasis are a pair of very close, partly sympatric species endemic to Hawaii island. Males of the two species differ strikingly in wing-pattern and there are altitudinal and breeding-site differences. Similarity indices have been calculated for both chromosomal (C) ald allozymic (A) variants. Within the main populations of each species
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21. Widespread accumulation of [3H]testosterone in the spinal cord of a wild bird with an elaborate courtship display
Elaborate courtship displays are relatively common features of the masculine reproductive behavior in birds. However, little is known about their neural and hormonal control. One bird that performs such a display is the golden-collared manakin (Manacus vitellinus) of Panamanian forests. Adult males, but not females, perform a physically intense display requi
The National Academy of Sciences.
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22. What was natural in the coastal oceans?
Humans transformed Western Atlantic coastal marine ecosystems before modern ecological investigations began. Paleoecological, archeological, and historical reconstructions demonstrate incredible losses of large vertebrates and oysters from the entire Atlantic coast. Untold millions of large fishes, sharks, sea turtles, and manatees were removed from the
The National Academy of Sciences.
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23. Simian T-Cell Leukemia Virus (STLV) Infection in Wild Primate Populations in Cameroon: Evidence for Dual STLV Type 1 and Type 3 Infection in Agile Mangabeys (Cercocebus agilis)
Three types of human T-cell leukemia virus (HTLV)-simian T-cell leukemia virus (STLV) (collectively called primate T-cell leukemia viruses [PTLVs]) have been characterized, with evidence for zoonotic origin from primates for HTLV type 1 (HTLV-1) and HTLV-2 in Africa. To assess human exposure to STLVs in western Central Africa, we screened for STLV infection
American Society for Microbiology.