Population Biology
Mostrando 13-24 de 360 artigos, teses e dissertações.
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13. Biology of non-native species (Rhaphiodon vulpinus Agassiz, 1829) (Characiformes, Cynodontidae) in a cage fish farm area, Upper Paraná River Basin, Brazil
Resumo Objetivo Verificar os aspectos alimentares, populacionais e parasitológicos da espécie de peixe silvestre não-nativa Rhaphiodon vulpinus em área sob influência de uma piscicultura em tanques-redes, no reservatório de Ilha Solteira, São Paulo. Métodos Cinquenta e um exemplares de R. vulpinus foram capturados entre setembro de 2014 e agosto
Acta Limnol. Bras.. Publicado em: 18/02/2019
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14. Relative growth of freshwater prawn Macrobrachium brasiliense (Decapoda, Palaemonidae) and its implications for reproduction
RESUMO O objetivo principal deste estudo foi estimar a maturidade sexual morfológica de Macrobrachium brasiliense (Heller, 1862) e analisar o crescimento relativo da espécie. Durante um ano de coleta, de julho de 2012 a junho de 2013, foram coletados 199 espécimes em um riacho localizado em um bioma de Cerrado, na região do Triângulo Mineiro. Uma vez id
Iheringia, Sér. Zool.. Publicado em: 24/01/2019
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15. Reproductive morphology and phenological aspects of one morphological variant of Hypnea pseudomusciformis (Gigartinales, Rhodophyta)
ABSTRACT Hypnea pseudomusciformis was recently described from South America, and has three morphological variants: “musciformis”, “nigrescens”, and “valentiae”. Information on the biology of these variants may help to explain this species’ wide morphological variation despite the absence of genetic divergence among variants. More morphological
Acta Bot. Bras.. Publicado em: 29/11/2018
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16. Nesting biology of three Megachile (Hymenoptera: Megachilidae) species from Eastern Amazonia, Brazil
Abstract Megachile Latreille is a conspicuous genus of solitary bees distributed worldwide. However, the biology of tropical species is still little known. We present data on biology of Megachile brasiliensis Data Torre, Megachile sejuncta Cockerell and Megachile stilbonotaspis Moure found in two remnants of eastern Amazonian forest in northeastern Brazil. T
Rev. Bras. entomol.. Publicado em: 2018-06
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17. The status of cryptococcosis in Latin America
Cryptococcosis is a life-threatening fungal infection caused by the encapsulated yeasts Cryptococcus neoformans and C. gattii, acquired from the environment. In Latin America, as occurring worldwide, C. neoformans causes more than 90% of the cases of cryptococcosis, affecting predominantly patients with HIV, while C. gattii generally affects otherwise health
Mem. Inst. Oswaldo Cruz. Publicado em: 05/04/2018
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18. Can the reproductive system of a rare and narrowly endemic plant species explain its high genetic diversity?
ABSTRACT The reproductive system of flowering plants can be highly variable, affecting their biology, gene flow and genetic variability among populations. Petunia secreta is a rare annual endemic species of Pedra do Segredo, located in the municipality of Caçapava do Sul, state of Rio Grande do Sul, Brazil. Although rare, the species possesses a high level
Acta Bot. Bras.. Publicado em: 08/01/2018
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19. Complete sequence and comparative analysis of the chloroplast genome of Plinia trunciflora
Abstract Plinia trunciflora is a Brazilian native fruit tree from the Myrtaceae family, also known as jaboticaba. This species has great potential by its fruit production. Due to the high content of essential oils in their leaves and of anthocyanins in the fruits, there is also an increasing interest by the pharmaceutical industry. Nevertheless, there are fe
Genet. Mol. Biol.. Publicado em: 06/11/2017
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20. The breeding biology, nest success, habitat and behavior of the endangered Saffron-cowled Blackbird, Xanthopsar flavus (Aves: Icteridae), at an Important Bird Area (IBA) in Rio Grande do Sul, Brazil
ABSTRACT The Saffron-cowled Blackbird, Xanthopsar flavus (Gmelin, 1788), is a globally vulnerable icterid endemic to grasslands and open areas, and a priority species for research and conservation programs. This contribution provides information on the population size, habitat, behavior, breeding biology and nest success of X. flavus in two conservation unit
Zoologia (Curitiba). Publicado em: 23/10/2017
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21. Population biology of Macrobrachium jelskii (Miers, 1877) (Decapoda, Palaemonidae) from an artificial pond in Bahia, Brazil
Abstract The freshwater prawn Macrobrachium jelskii (Miers, 1877) is widely distributed in South America’s lentic and lotic habitats. We studied the population structure and reproductive biology of the species in the municipality of Cruz das Almas, state of Bahia, Brazil, to supply information on this ecologically and economically relevant species. Samples
Nauplius. Publicado em: 04/09/2017
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22. The peculiar breeding biology of the Amazonian frog Allobates subfolionidificans (Aromobatidae)
ABSTRACT Allobates subfolionidificans is a vulnerable and endemic leaf-litter frog from the state of Acre, Brazilian Amazonia. We monitored a population of A. subfolionidificans through regular censuses and mark-recapture of 181 individuals during an entire breeding season to characterize its reproductive behavior. The space use of A. subfolionidificans indi
An. Acad. Bras. Ciênc.. Publicado em: 2017-06
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23. Evaluation of MC1R high-throughput nucleotide sequencing data generated by the 1000 Genomes Project
Abstract The advent of next-generation sequencing allows simultaneous processing of several genomic regions/individuals, increasing the availability and accuracy of whole-genome data. However, these new approaches may present some errors and bias due to alignment, genotype calling, and imputation methods. Despite these flaws, data obtained by next-generation
Genet. Mol. Biol.. Publicado em: 08/05/2017
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24. Refining the ideas of "ethnic" skin
Abstract: Skin disease occur worldwide, affecting people of all nationalities and all skin types. These diseases may have a genetic component and may manifest differently in specific population groups; however, there has been little study on this aspect. If population-based differences exist, it is reasonable to assume that understanding these differences ma
An. Bras. Dermatol.. Publicado em: 2017-03