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Registros recuperados: 102
Primeira ... 123456 ... Última
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A feeding association between Wilson's Storm-petrels Oceanites oceanicus (Kuhl, 1820) and Rough-toothed Dolphins Steno bredanensis (G. Cuvier in Lesson, 1828) Biota Neotropica
Olmos,Fábio; Rotenberg,Elsie; Muscat,Edelcio.
On 06 October 2012 a pod of Rough-toothed Dolphins Steno bredanensis (Delphinidae) was observed catching and tearing apart several Castin Leatherjacks Oligoplites saliens (Carangidae) near Montão de Trigo Island, northern coast of São Paulo, Brazil. The resulting floating masses of viscera attracted a feeding aggregation of 120-150 Wilson's Storm-petrels Oceanites oceanicus (Hydrobatidae), a transequatorial migrant passing through the area during October. This interspecific association has not been recorded before, although it could be expected given that S. bredanensis feeds on large fish and O. oceanicus is a known scavenger of kills made by cetaceans such as Killer Whales.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Behaviour; Brazil; Feeding association; Kleptoparasitism; Oceanites oceanicus; Steno bredanensis.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000200303
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A preliminary study of the behaviour and vitality of reseeded juvenile great scallops, of three sizes in three seasons ArchiMer
Fleury, Pierre-gildas; Mingant, Christian; Castillo, A.
In order to have a better understanding of recessing in great scallop, Pecten maximus and consequently the causes of mortality at reseeding, this study has monitored, at different seasons, the dispersion and recessing of different sizes of juveniles (about 15, 30 and 45 mm, called small, medium and large) after seeding. Moreover, the aim was to see when small spat (15 mm) could be seeded, and thus reduce the costs of intermediate culture. Three monitoring approaches were used together: (1) continual observations by remote video camera, of a defined area (less than 1 m2) containing 10 scallops from each size group; (2) daily monitoring of behaviour with divers along three bottom lines, with 20 × 1 m2 plots each and nine marked scallops per plot; and (3) the...
Tipo: Text Palavras-chave: Behaviour; Great scallop (Pecten maximus); Season; Seeding; Size; Vitality of spat.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00326/43752/43284.pdf
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Acoustic observations in the Bay of Biscay: Schooling, vertical distribution, species assemblages and behaviour ArchiMer
Masse, Jacques.
Eight acoustic surveys were carried our in the Bay of Biscay, during 1989-94, to study the distribution and abundance of anchovy (Engraulis encrasicolus, L.) in that area. Acoustic data were stored using the INES/MOVIES acquisition and processing system. Species-specific distribution patterns were confirmed through complementary sampling with a mid-water trawl. This paper summarises the combination of technical procedures used for acoustic assessments, and the results of acoustic surveys in the Bay of Biscay that pertain to the dynamics of this stock. Information is presented on the distribution and abundance of anchovy and co-occuring species, and on the movement patterns detected within the pelagic fish community, in relation to environmental conditions....
Tipo: Text Palavras-chave: Acoustic; Anchovy; Engraulis encrasicolus; Schooling; Pelagic; Behaviour; Bay of Biscay.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00191/30265/28719.pdf
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Activity budget and behavioural patterns of free-ranging yellow-tailed woolly monkeys Oreonax flavicauda (Mammalia: Primates), at La Esperanza, northeastern Peru Naturalis
Shanee, S.; Shanee, N..
The critically endangered yellow-tailed woolly monkey (Oreonax flavicauda) is endemic to the cloud forests of north-eastern Peru and one of the least studied of all primate species. We conducted fifteen months of group follows using focal animal sampling techniques to gather the first behavioural data on free ranging O. flavicauda. Group follows took place in an area of disturbed primary and regenerating secondary forest near the village of La Esperanza, Amazonas department. Yellow-tailed woolly monkey activity budgets at La Esperanza average: 29.8% feeding, 26.3% resting, 29.0% travelling, 2.3% in social and 12.8% in other activities. Significant differences were observed in the frequency of behaviours between age/sex classes as well as on temporal...
Tipo: Article / Letter to the editor Palavras-chave: Atelidae; Behaviour; Cloud forest; Lagothrix; 42.84.
Ano: 2011 URL: http://www.repository.naturalis.nl/record/402022
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Aggregation processes of Tuna under Drifting Fish Aggregating Devices (DFADS) assessed through fisher's echosounder buoy in the Indian Ocean ArchiMer
Baidai, Y; Dagorn, Laurent; Amande, Mj; Gaertner, Daniel; Capello, Manuela.
The aggregative behavior of tuna around floating object is widely exploited by the industrial purse-seine fishery, which deploy thousands of floating objects each year in all oceans in order to improve their catches. These fish aggregating devices (FADs) are generally equipped with echosounder buoys that can collect acoustic data, conferring to these devices the status of privileged observation platforms for the fish communities that aggregate. Using a classification model based on supervised learning algorithms trained on M3I buoy data, we were able to translate the acoustic data collected along the trajectories of 5748 drifting FADs newly deployed between 2016 and 2018 in the Indian Ocean into presence or absence of tuna aggregation. Analysis of the...
Tipo: Text Palavras-chave: Echosounders; Drifting fish aggregating devices (FAD); Tropical tunas; Behaviour.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00615/72694/71700.pdf
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An ecotoxicological view on neurotoxicity assessment ArchiMer
Legradi, J. B.; Di Paolo, C.; Kraak, M. H. S.; Van Der Geest, H. G.; Schymanski, E. L.; Williams, A. J.; Dingemans, M. M. L.; Massei, R.; Brack, W.; Cousin, Xavier; Begout, Marie-laure; Van Der Oost, R.; Carion, A.; Suarez-ulloa, V.; Silvestre, F.; Escher, B. I.; Engwall, M.; Nilen, G.; Keiter, S. H.; Pollet, D.; Waldmann, P.; Kienle, C.; Werner, I.; Haigis, A. -c.; Knapen, D.; Vergauwen, L.; Spehr, M.; Schulz, W.; Busch, W.; Leuthold, D.; Scholz, S.; Vom Berg, C. M.; Basu, N.; Murphy, C. A.; Lampert, A.; Kuckelkorn, J.; Grummt, T.; Hollert, H..
The numbers of potential neurotoxicants in the environment are raising and pose a great risk for humans and the environment. Currently neurotoxicity assessment is mostly performed to predict and prevent harm to human populations. Despite all the efforts invested in the last years in developing novel in vitro or in silico test systems, in vivo tests with rodents are still the only accepted test for neurotoxicity risk assessment in Europe. Despite an increasing number of reports of species showing altered behaviour, neurotoxicity assessment for species in the environment is not required and therefore mostly not performed. Considering the increasing numbers of environmental contaminants with potential neurotoxic potential, eco-neurotoxicity should be also...
Tipo: Text Palavras-chave: Eco-neurotoxicity; Neurotoxicity; EDA; REACH; AOP; Behaviour; Computational toxicity; Ecological; Species.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00473/58477/61058.pdf
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Antipredator and alarm reaction responses of silver catfish (Rhamdia quelen) juveniles exposed to waterborne ammonia Neotropical Ichthyology
Weber,Paula; Vogel,Carina; Lang,Carla; Baldisserotto,Bernardo.
Ammonia has relatively toxic effects on fish and other aquatic organisms. This study examined whether juvenile silver catfish exposed to alarm substances released by conspecifics and predators in water with different ammonia levels modify their behaviour in response to the perceived risk of predation. We used juvenile catfish that were naive to predators. The fish were raised from the larval stage in the laboratory and kept in 40-L aquaria at waterborne NH3 concentrations of 0, 0.05, 0.1, or 0.2 mg L-1 for 10 days. The alarm substances used were predator odour and skin extract from conspecifics. The juveniles were transferred to 2-L aquaria for the antipredator and alarm reaction behavioural tests, which were performed on days 1, 5 and 10 after initial...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alarm substance; Behaviour; Predator odour; Skin extract; Un-ionised ammonia.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000200020
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Aspectos biológicos del calamar Illex argentinus OceanDocs
Leta, H.R..
La creciente importancia que los recursos de calamar han adquirido en 105 últimos 30 años, los sitúa actualmente entre los más importantes recursos pesqueros del mundo. En consecuencia, paises tradicionalmente no explotadores o consumidores de productos de calamar, han orientado sus esfuerzos hacia el logro de un mejor conocimiento de las especies de cefalópodos que habitan su ambiente marino. En este sentido el aporte de disciplinas tales como la biología ha sido decisivo para desarrollar en forma exitosa pesquerías de calamar, entre otras.El programa de investigaciones del Instituto Nacional de Pesca para 1980 incluyó el estudio integral de la explotación de los calamares como un primer paso hacia el desarrollo de una pesquería del recurso. Este trabajo...
Tipo: Report Palavras-chave: Biology; Environmental conditions; Population structure; Spawning; Spawning grounds; Sex ratio; Sexual maturity; Reproduction; Length; Behaviour; Migrations; Growth; Population structure; Spawning; Length; Growth; Biology; Environmental conditions; Spawning grounds; Sex ratio; Sexual maturity; Reproduction; Behaviour; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_4260; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_925; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_7277; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_868.
Ano: 1981 URL: http://hdl.handle.net/1834/2563
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Associative behaviour and antagonism of bovine rumen ciliate (Protista, Ciliophora) from Zona da Mata, Minas Gerais State, Brazil Zoologia
D'Agosto,Marta; Guedes,Paulo Marcos da Matta.
Aiming at obtaining the community profile and verifying the occurrence of antagonism and association among ciliates, samples of rumen content were analysed in 100 bovines soon after their death. The animals were killed at the Juiz de Fora Municipal slaughter house (Juiz de Fora, Minas Gerais State, Brazil) between August 1996 and May 1997. Ciliates occurred, respectively, in the following percents and samples number: Entodinium Stein, 1859 (50,48; 100), Diplodinium Schuberg, 1888 (5,59; 98), Eudiplodinium Dogiel, 1927 (6,91; 97), Ostracodinium Dogiel, 1927 (9,68; 95), hotricha Stein, 1859 (4,15; 93), Dasytricha Schuberg, 1888 (3,31; 93), Metadi nium Awerinzew & Mutafowa, 1914 (3,06; 90), Eremoplastron Kofoid & MacLennan. 1932 (7,39; 87),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rumen ciliate; Behaviour; Bovine; Community profile; Antagonism.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400011
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Avaliacao de alguns fatores do meio que influenciam a adaptacao, o comportamento fisiologico e o desempenho de bovinos da raca Sindhi, nas condicoes ambientais do semi-arido brasileiro: relatorio parcial das atividades referentes ao periodo de 01/09/97 a 01/07/98. Infoteca-e
TURCO, S. H. N..
Este experimento esta sendo conduzido, no campo experimental da caatinga, Embrapa Semi-Arido, localizado no municipio de Petrolina-PE, regiao semi-arida do Nordeste brasileiro. Estao sendo utilizados 22 animais, da raca Sindhi, sendo dez femeas e doze machos, com idade variando de 1 a 4 anos. O manejo para todas as categorias animais e o mesmo utilizado pelo sistema de producao Embrapa Semi-Arido, onde sao manejadas, todo o periodo do experimento, em pastagem nativa (caatinga), durante dois a quatro meses e em pastagem cultivada (capim buffel), durante o restante do ano. As informacoes basicas para este trabalho foram: a) variaveis fisiologicas: temperatura retal (TR); temperatura da pele (TP); frequencia respiratoria (FR); b) variaveis anatomicas:...
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Rca Sindhi; Comportamento fisiologico; Adaptacao; Desempenho; Semi-Arido; Bovine; Behaviour; Adaptation; Bovino; Performance; Breeds; Cattle; Physiology.
Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133625
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Avaliacao de alguns fatores do meio que influenciam a adaptacao, o comportamento fisiologico e o desempenho de bovinos da raca Sindi, nas condicoes ambientais do semi-arido brasileiro. Infoteca-e
TURCO, S. H. N..
Os trabalhos com capim buffel efetuados pela Embrapa Semi-Arido e outras instituicoes, comprovam a possibilidade de incrementos de peso vivo em bovinos da ordem de 100 a 150 kg por cabeca/ano, sendo atualmente considerada um dos mais importantes recursos forrageiros para a regiao semi-arida. Todavia, mesmo com esses ganhos, no periodo seco, pode haver perdas, devido a queda dos teores de proteina e energia do capim. Entretanto, sabendo-se que a qualidade da dieta selecionadas pelos ruminantes em pastejo, pode flutuar com o "status" fenologico das plantas forrageiras, a suplementacao energetica e/ou proteica de baixo custo, via mistura multiplas, pode se tornar uma pratica e uma excelente alternativa na busca do aumento da eficiencia produtiva dos animais,...
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Raca Sindi; Comportamento fisiologico; Desempenho; Adaptacao; Regiao semi-arida; Behaviour; Adaptation; Semiarid region; Bovino; Ecologia Animal; Performance; Animal ecology; Cattle.
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133623
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Avaliação de cultivares de aveia branca para cobertura do solo, produção de forragem e grãos. Infoteca-e
MACHADO, L. A. Z..
bitstream/item/39740/1/COT-09-1999.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Comportamento; Oat; Behaviour; Cover plants; Grain; Production.; Aveia; Avena Sativa; Cobertura do Solo; Cerrado; Forragem; Grão; Produção.; Forage; Soil..
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/242421
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Avaliação de cultivares de aveia branca para produção de forragem. Infoteca-e
MACHADO, L. A. Z..
bitstream/item/39697/1/PA-9-1999.pdf
Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Aveia branca; Comportamento; Behaviour; Production.; Avena Sativa; Cerrado; Forragem; Produção; Variedade.; Forage; Oats; Varieties..
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/242139
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Avaliação de cultivares de aveia preta para produção de forragem e cobertura do solo. Infoteca-e
MACHADO, L. A. Z..
bitstream/item/39698/1/PA-10-1999.pdf
Tipo: Outras publicações técnicas (INFOTECA-E) Palavras-chave: Aveia preta; Comportamento; Behaviour; Cover plants.; Cobertura do Solo; Cerrado; Forragem; Variedade.; Forage; Oats; Varieties..
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/243100
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Avaliação de cultivares de soja sobre braquiária no sistema plantio direto, safra 1998/99, em Piacatu, SP. Infoteca-e
VIEIRA, C. P.; SALDANHA, O. A.; CAMBRAIA, L. A..
bitstream/item/39753/1/COT-11-1999.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Comportamento; Brasil; Sao Paulo; Piacatu; Soybean; Behaviour; Direct soweing; Pasture.; Brachiaria Brizantha; Cerrado; Glycine Max; Pastagem; Plantio Direto; Variedade; Soja.; Brazil; Varieties..
Ano: 1999 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/242260
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Avaliação de genótipos de milheto (Pennisetum glaucum (L.) R. Br.) nos cerrados do Distrito Federal. Repositório Alice
GOCHO, H.; FARIAS NETO, A.L. de; NETTO, D. A..
1999
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Cerrado; Comportamento; Pennisetum glaucum; Milheto; Savanna; Brasil; Brazil; Behaviour; Distrito Federal.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/483481
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Behaviour and growth performance of low-birth-weight piglets cross-fostered in multiparous sows with piglets of higher birth weights Arq. Bras. Med. Vet. Zootec.
Souza,L.P.; Fries,H.C.C.; Heim,G.; Faccin,J.E.; Hernig,L.F.; Marimon,B.T.; Bernardi,M.L.; Bortolozzo,F.P.; Wentz,I..
The aim of the study was to evaluate the behaviour, pre-weaning survival rate and growth performance of low birth weight (BW) piglets cross-fostered with piglets of higher weights. Piglets were transferred to 60 foster sows, and divided in three groups (G; n=20): G1- 12 low BW piglets (0.80 - 1.25kg); G2- six low BW piglets and six intermediate BW piglets (1.40 - 1.60kg), and G3- six low BW piglets and six high BW piglets (>1.70kg). For the analysis, groups G2 and G3 were subdivided in LG2 (six G2 light piglets); IG2 (six G2 intermediate piglets), LG3 (six G3 light piglets), and HG3 (six G3 heavy piglets). Behavioural observations were carried out on days 1, 2, 4 and 6 (visual direct observation) and on days 3 and 5 (video recording) after birth. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Piglet; Cross-fostering; Behaviour; Birth weight.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000200027
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Behaviour and orcadian rhythm of the fish bathygobius soporator Valenciennes (Gobiidae) under the influence of environmental salinity and temperature Zoologia
Fanta,Edith.
The behavioural patterns and their cireadian rhythms may be adaptive to the peculiar environmental conditions of subtropical brackish waters where Ba-thygobius soporator Valenciennes, 1837 live. Adult fish were caught at the southern Brazilian coast from mangrove rivers and rocky shores in a bay, where temperature and water salinity vary during the day and through the year. Observation on the behaviour of the animals was undertaken in salinity 8.5ppt, 17.0ppt, 25.5ppt and 34.0ppt, each one in temperatures of 18ºC and 28ºC. Temperature and salinity affect the frequency and intensity of some of the behavioural events, more than its pattern or rhythm. Swimming is rare, decreasing along the day and with temperature increase, being even lower at low salinity;...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bathygobius soporator; Fish; Behaviour; Cireadian rhythm; Salinity; Temperature.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751997000100021
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Behavioural and biochemical responses of two marine invertebrates Scrobicularia plana and Hediste diversicolor to copper oxide nanoparticles ArchiMer
Buffet, Pierre-emmanuel; Tankoua, Olivia Fossi; Pan, Jin-fen; Berhanu, Deborah; Herrenknecht, Christine; Poirier, Laurence; Amiard-triquet, Claude; Amiard, Jean-claude; Berard, Jean-baptiste; Risso, Christine; Guibbolini, Marielle; Romeo, Michele; Reip, Paul; Valsami-jones, Eugenia; Mouneyrac, Catherine.
Engineered nano-sized Cu oxide particles are extensively used in diverse applications. Because aquatic environments are the ultimate "sink" for all contaminants, it is expected that nanoparticles (NP) will follow the same fate. In this study, two marine invertebrates Scrobicularia plana and Hediste diversicolor were chosen as ecotoxicological models. The aim was to evaluate behavioural (burrowing kinetics, feeding rate) and biochemical (biomarkers) responses of S. plana and H. diversicolor exposed in the laboratory to Cu (10 mu g L(-1)) added in natural seawater either in the form of engineered nanoparticles (NPs) of CuO or as dissolved Cu in 2% HNO(3). Exposure was characterized by considering (i) the physico-chemical fate of NP (ii) the fraction of...
Tipo: Text Palavras-chave: Copper oxide nanoparticles; Behaviour; Biomarkers; Oxidative stress; Scrobicularia plana; Hediste diversicolor.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00040/15140/15856.pdf
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Behavioural observations of the cephalopod Vulcanoctopus hydrothermalis ArchiMer
Rocha, Francisco; Gonzalez, Angel; Segonzac, Michel; Guerra, Angel.
Introduction : The hydrothermal vent ecosystem is inhabited by poorly known species of deep-sea octopuses (Lutz & Voight, 1994). Vulcanoctopus hydrothermalis Gonzalez & Guerra, 1998, is the only described cephalopod from a hydrothermal vent (Gonzalez et al., 1998). Little is known about this small benthic octopus, up to 35 mm mantle length, with a muscular and semi-translucent body, lack of any type of chromatic elements in the skin and eye with no trace of an iris (Gonzalez et al., 1998). Its morphology was studied by Gonzalez et al. (in press) but there have been no behavioural studies of this species to date. Most observations of octopus behaviour in abyssal environments, mainly Cirroctopoda, have been described from videotape records (Boletzky...
Tipo: Text Palavras-chave: Vulcanoctopus hydrothermalis; Behaviour; Cephalopod; Hydrothermal vent.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/publication-897.pdf
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