Daily And Seasonal Activity
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Low dissolved oxygen levels increase stress in piava (Megaleporinus obtusidens): iono-regulatory, metabolic and oxidative responses
Abstract: The aquatic environment presents daily and/or seasonal variations in dissolved oxygen (DO) levels. Piava faces different DO levels in the water due to its distributional characteristics. The goal of this study was to describe the effects of low DO levels on plasma ion, biochemical and oxidative variables in piava juveniles. Fish were exposed to dif
An. Acad. Bras. Ciênc.. Publicado em: 19/08/2019
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2. Ecophysiology, genotoxicity, histopathology, and gene responses of naphthalene injected Colossoma macropomum (Cuvier, 1818) exposed to hypoxia
Abstract The present study aimed to evaluate the biological responses of Colossoma macropomum to naphthalene injection and subsequent hypoxia exposure, emphasizing the expression of the tumor suppressor gene tp53. Tambaquis were intraperitoneally injected with naphthalene (50 mg/kg) and, after 96 hours, the fish were transferred to respirometry chambers and,
Genet. Mol. Biol.. Publicado em: 13/06/2019
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3. Plasticity in the timing of activity in the Red-rumped Agouti, Dasyprocta leporina (Mammalia: Rodentia), in the Atlantic Forest of southeastern Brazil
Resumo O horário de atividade reflete adaptações e respostas das espécies às variações diárias e sazonais do ambiente, sendo o entendimento destes padrões importante para uma melhor compreensão do nicho temporal das espécies. Este trabalho objetivou caracterizar o horário de atividade da cutia (Dasyprocta leporina) em dois remanescentes de Mata A
Biota Neotrop.. Publicado em: 11/02/2019
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4. Seasonal variation in the reproductive activity of male goats raised under tropical climate conditions
ABSTRACT This study analyzed seasonal variations in the testes, the concentration of sex hormones, the parameters of fresh and thawed semen, and the sexual behavior of male Alpine goats from a temperate region in a tropical climate and possible interference with fertility. The maximum and minimum temperature and luminosity were recorded daily, while seminal,
R. Bras. Zootec.. Publicado em: 2017-03
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5. Diversidad, distribución espacio-temporal y turnos de vocalización de anuros (Amphibia, Anura) en un área ecotonal del nordeste de Argentina
ABSTRACT Studies on diversity and natural history of anuran communities are basic to distinguish natural fluctuations from those due to human impacts (a key tool in conservation programs), to assess the role they play in ecosystems dynamics and to allow comparison of diversity gradients. With those objectives, this paper analyzes diversity, temporal and spat
Iheringia, Sér. Zool.. Publicado em: 2015-06
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6. Seasonal, daily activity, and habitat use by three sympatric pit vipers (Serpentes, Viperidae) from southern Brazil
Serpentes viperídeas são amplamente distribuídas pela América do Sul, com maior radiação ocorrendo na subfamília Crotalinae. Apesar da aparente abundância dessas serpentes ao longo da sua distribuição geográfica, alguns aspectos ecológicos permanecem desconhecidos, principalmente em áreas subtropicais. No presente estudo, avaliamos a atividade (
An. Acad. Bras. Ciênc.. Publicado em: 25/04/2014
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7. Daily and seasonal activity patterns of free range South-American rattlesnake (Crotalus durissus)
O estudo teve como objetivo descrever as variações na atividade sazonal e diária de uma população de cascavéis (Crotalus durissus) no Cerrado do sudeste brasileiro. As atividades sazonais e diárias das cobras foram avaliadas por meio de capturas em amostragens em rodovias, encontros ocasionais e rádio rastreamento. Nossos resultados indicam que vari�
An. Acad. Bras. Ciênc.. Publicado em: 13/08/2013
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8. Atmospheric patterns associated with concentrations of tropospheric ozone in the metropolitan region of Sao Paulo / Padrões atmofésricos associados a concentrações de ozônio troposférico na região metropolitana de São Paulo
In the past few years, tropospheric ozone has been noticed to exceed the states environmental agency (CETESB) air quality standards more than any other air pollutant in the Sao Paulo Metropolitan Area (SPMA), Brazil. Its assumed that different atmospheric patterns are responsible for different impacts on ozone concentrations, due to already known phenomena c
Publicado em: 2009
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9. Análise financeira das pescarias de pequena escala no município de Florianópolis (SC) / Financial analysis of small-scale fisheries in the city of Florianópolis (SC)
This study sought to compare two types of communities of fishermen in the city of Florianópolis which differ in the environment where its members works: (1) bays and (2) the open sea. The main objectives of the study were to characterize the socioeconomic profile of small-scale fishermen, to describe the local fishing activity with respect to the means of p
Publicado em: 2009
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10. INDICADORES POPULACIONAIS E ECOLÓGICOS DE PEIXES-BOIS-MARINHOS (Trichechus manatus manatus) EM DUAS ÁREAS DE MANGUEZAIS E MARISMAS NO MARANHÃO / POPULATION AND ECOLOGICAL INDEX FOR MANATEES (Trichechus manatus manatus) IN TWO MANGROVES AND SALT-MARSHES AREAS OF MARANHÃO
The Brazilian north coast has the largest continuous area of mangroves on the planet and hosts large groups of manatees, aquatic mammal critically endangered. This research examines the efforts of fix point methodology of observation of manatees on relevant sites of occurrence, from data collected while on the beach in Guarapiranga (GUA), São José de Ribam
Publicado em: 2008
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11. Bionomia de Polistes lanio lanio (Fabricius, 1775) (Hymenoptera: Vespidae) no Campus da Universidade Federal Rural do Rio de Janeiro / Bionomy of Polistes lanio lanio (Fabricius, 1775) (Hymenoptera: Vespidae) at the Universidade Federal Rural do Rio de Janeiro campus.
The wasps are holometabolous insects, that is; they have four stages during their life cycle: egg, larva, pupa and adult. The social wasps build their own nest that is usually made of ground wood fibers and some of them may be quite large and complex, depending on the builder species. The nests of Polistes lanio lanio, however, are relatively small and this
Publicado em: 2007
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12. Ecologia alimentar e reprodutiva de Marmosops paulensis (Didelphimorphia : Didelphidae) em uma area de Mata Atlantica no sudeste de São Paulo
Marmosops paulensis [Tate, 1931] (Didelphimorphia: Didelphidae) is a small marsupial occurring in montane forests above 800 m in the Brazilian Atlantic forest. The objective of the present study was to evaluate the influence of resource availability on the diet, space use and reproductive patterns of M. paulensis. This study was carried out from August 2002
Publicado em: 2005