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Registros recuperados: 40
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Acclimation of juvenile Mugil liza Valenciennes, 1836 (Mugiliformes: Mugilidae) to different environmental salinities Neotropical Ichthyology
Lisboa,Viviana; Barcarolli,Indianara F.; Sampaio,Luís A.; Bianchini,Adalto.
Survival and physiological parameters associated with metabolism and osmoregulation were evaluated in juveniles of the Lebranche mullet Mugil liza acclimated to different water salinities (5, 10, 20, 30, and 40‰) for 15 days. Room temperature (25ºC) and photoperiod (12L:12D) were fixed. Fish were fed twice-a-day with commercial diet (28% crude protein) until satiation. After acclimation, whole body oxygen consumption was measured and fish were euthanized and sampled for blood, gills, and liver. Whole body oxygen consumption and plasma osmolality did not change in the range of salinities tested. The isosmotic point was estimated as 412.7 mOsmol kg-1 (13.5‰). Gill Na+,K+-ATPase activity tended to be lower at 20 and 30‰, while liver glycogen content was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Glycogen; Na+; K+-ATPase; Osmoregulation; Oxygen consumption.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300591
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Adult acclimation to combined temperature and pH stressors significantly enhances reproductive outcomes compared to short-term exposures ArchiMer
Suckling, Coleen C.; Clark, Melody S.; Richard, Joelle; Morley, Simon A.; Thorne, Michael A. S.; Harper, Elizabeth M.; Peck, Lloyd S..
This study examined the effects of long-term culture under altered conditions on the Antarctic sea urchin, Sterechinus neumayeri.Sterechinus neumayeri was cultured under the combined environmental stressors of lowered pH (-03 and -05 pH units) and increased temperature (+2 degrees C) for 2years. This time-scale covered two full reproductive cycles in this species and analyses included studies on both adult metabolism and larval development. Adults took at least 6-8months to acclimate to the altered conditions, but beyond this, there was no detectable effect of temperature or pH. Animals were spawned after 6 and 17months exposure to altered conditions, with markedly different outcomes. At 6months, the percentage hatching and larval survival rates were...
Tipo: Text Palavras-chave: CO2; Echinoderm; Gonad maturation; Larval development; Oxygen consumption; Vitellogenesis.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00617/72874/71930.pdf
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Antioxidant responses of Laeonereis acuta (Polychaeta) after exposure to hydrogen peroxide BJMBR
Rosa,C.E. da; Bianchini,A.; Monserrat,J.M..
The effects of H2O2 were evaluated in the estuarine worm Laeonereis acuta (Polychaeta, Nereididae) collected at the Patos Lagoon estuary (Southern Brazil) and maintained in the laboratory under controlled salinity (10 psu diluted seawater) and temperature (20°C). The worms were exposed to H2O2 (10 and 50 µM) for 4, 7, and 10 days and the following variables were determined: oxygen consumption, catalase (CAT) and glutathione peroxidase activity in both the supernatant and pellet fractions of whole body homogenates. The concentrations of non-protein sulfhydryl and lipid peroxides (LPO) were also measured. The oxygen consumption response was biphasic, decreasing after 4 days and increasing after 7 and 10 days of exposure to 50 µM H2O2 (P < 0.05). At the...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Worms; Laeonereis acuta; Hydrogen peroxide; Oxidative stress; Antioxidant enzymes; Oxygen consumption.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000200007
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Biochemical substrates expenses and respiration at short-term starvation of marine planktonic animals ArchiMer
Pavlova, Z; Morozova, A; Gaudy, R; Shchepkin, V.
One of the most important indices at estimation of productivity characteristics of hydrobionts is oxygen consumed in the process of respiration. Usually respiration (standard metabolism) is measured in small-volume respirometres (30-50 ml) where animals' activity is considerably restricted. It may underestimate respiration in comparison to natural one. Therefore respirometres of larger volume were used. Simultaneously under same conditions we tried to estimate energy requirements by expense of main biochemical components of organic matter (lipids, protein, glycogen). Results were used to calculate energy budget and to compare energy expenditures, measured according to consumed oxygen and tissue substrates expense.
Tipo: Text Palavras-chave: Euchirella curticauda; Pleuromamma abdominalis; Scolecithrix danae; Ostracoda; Copepoda; Starvation; Oxygen consumption; Biochemical composition; Zooplankton; Energy budget; Respiration; Biological production.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1520.pdf
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Bioenergética del besugo Pagrus pagrus. OceanDocs
Aristizabal, E.O..
The utilization of the energy of food by red porgy (Pagrus pagrus Linnaeus, 1758) from the Argentine Sea (SW Atlantic) was studied. From the energetic point of view, it is proposed that the strategy of patitioning, utilization and storage of the energy of food, is an indicator of the organism response to the environmental conditions. The main objective was to know the proportion of the energy of food derived to the different components of the bioenergetics budget. In order to estimate the monthly energy investment in reproductive growth, chemical analysis of gonads from fishes caught by the fishery fleet and from laboratory studies were performed. Two indexes were used to calculate the energy investment in female ovaries: the proportion of net daily energy...
Tipo: Theses and Dissertations Palavras-chave: Fish culture; Bioenergetics; Eggs; Fish larvae; Food consumption; Energy budget; Metabolism; Oxygen consumption; Fish culture; Eggs; Food consumption; Metabolism; Fish larvae; Oxygen consumption; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_3016; Http://aims.fao.org/aos/agrovoc/c_4769; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_5478.
Ano: 2003 URL: http://hdl.handle.net/1834/1466
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Body size and temperature effects on standard metabolic rate for determining metabolic scope for activity of the polychaete Hediste (Nereis) diversicolor ArchiMer
Lopes Galasso, Helena; Richard, Marion; Lefebvre, Sebastien; Aliaume, Catherine; Callier, Myriam.
Considering the ecological importance and potential value of Hediste diversicolor, a better understanding of its metabolic rate and potential growth rates is required. The aims of this study are: (i) to describe key biometric relationships; (ii) to test the effects of temperature and body size on standard metabolic rate (as measure by oxygen consumption) to determine critical parameters, namely Arrhenius temperature (TA), allometric coefficient (b) and reaction rate; and (iii) to determine the metabolic scope for activity (MSA) of H. diversicolor for further comparison with published specific growth rates. Individuals were collected in a Mediterranean lagoon (France). After 10 days of acclimatization, 7 days at a fixed temperature and 24 h of fasting,...
Tipo: Text Palavras-chave: Annelida; Deposit-feeder; Oxygen consumption; Allometric coefficient; Arrhenius temperature; Aerobic scope; Growth.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00465/57682/59885.pdf
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Comparaison de la respiration chez Ruditapes decussatus (L.) et R. philippinarum (Adams & Reeve) en fonction de la température ArchiMer
Bodoy, Alain; Riva, Alain; Maitre-allain, Thierry.
Measurements of oxygen consumption in the two species Ruditapes decussatus and Ruditapes phi/ippinarum were perfonned using hatchery-reared juveniles, grown under controlled conditions. The temperature range varied from 10 to 30°C. The linear relations between the logarithms of the dry weight and of the oxygen consumption were calculated for each species. Rates were compared in terms of standardized clam tissue weight calculated from the regression of respiration on tissue weight. Such a technique allows to make comparisons between the species by avoiding any interference from the variations in individual weight. Within this range of temperature, oxygen consumption of R. philippinarum and of R. decussatus exhibit the same variations, with a maximum at...
Tipo: Text Palavras-chave: Temperature; Oxygen consumption; Ruditapes philippinarum; Ruditapes decussatus; Température; Consommation oxygène; Ruditapes philippinarum; Ruditapes decussatus.
Ano: 1986 URL: http://archimer.ifremer.fr/doc/1986/publication-2963.pdf
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Comparative effects of long-term hypoxia on growth, feeding and oxygen consumption in juvenile turbot and European sea bass ArchiMer
Pichavant, Karine; Person, Jeannine; Le Bayon, Nicolas; Severe, Armelle; Le Roux, Annick; Boeuf, Gilles.
When juvenile turbot Scophthulmus maximus and sea bass Dicentrarchus labrax were fed to satiation, growth and food intake were depressed under hypoxia (3.2 +/- 0.3 and 4.5 +/- 0.2 mg O-2 l(-1)). However, no significant difference in growth was observed between fishes maintained in hypoxia and fed to satiation and fishes reared in normoxia (7.4 +/- 0.3 mg O-2 l(-1)) and fed restricted rations (same food intake of fishes at 3.2 mg O-2 l(-1)). Routine oxygen consumption of fishes fed to satiation was higher in normoxia than in hypoxia due to the decrease in food intake in the latter. Of the physiological parameters measured, no significant changes were observed in the two species maintained in hypoxia. This study confirms the significant interaction between...
Tipo: Text Palavras-chave: Oxygen consumption; Growth; Hypoxia; Sea bass; Turbot.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/publication-617.pdf
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Consommation d'oxygene de la crevette japonaise, Penaeus japonicus , en fonction de l'oxygenation du milieu: Effects de la temperature et de l'acclimatation a des conditions ambiantes hypoxiques ArchiMer
Truchot, J; Jouve, D.
Oxygen consumption of juvenile prawns, Penaeus japonicus , was measured during the day at 4 temperatures (23, 26, 30 and 33 degree C) and at various oxygenation levels. For inactive prawns burrowed into sand, respiratory metabolism was maintained almost constant in hypoxia above a critical oxygen pressure of about 30-40 Torr. Data analysis according to a hyperbolic model indicates that the capacity for metabolic regulation was optimal between 26 and 30 degree C. Prawns acclimated 1-2 weeks at 20 degree C in moderate hypoxia (P sub(O2) around 50-55 Torr) showed a reinforced regulation of oxygen consumption when compared to normoxic controls.
Tipo: Text Palavras-chave: Penaeus japonicus; Malacostraca; Juveniles; Respiration; Hypoxia; Dissolved oxygen; Temperature effects; Oxygen consumption; Crevettes Pénaeides; Température; Hypoxie; Métabolisme respiratoire.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1192.pdf
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Consumo de oxígeno, crecimiento y utilización del alimento durante el desarrollo larval del besugo Pagrus pagrus (Linné, 1758)(Pisces:Sparidae). OceanDocs
Aristizabal, E.O..
Knowledge of the life history of fish larvae is of practical importance to understand variations in the survival rate not only for cultivated fish but also for fishery biology studies. With the aim of recognizing critical changes during the first days of life of red porgy larvae, the oxygen consumption, growth, and food utilization were studied. After hatching, the larvae were transferred to two 400 L fiberglass tanks with microalgae (Nannochloropsis oculata)and enriched rotifers (Brachionus plicatilis)as initial food. During the incubation and larval rearing, water temperature was kept at 18.0 ± 0.5ºC and salinity ranged from 33.0 to 34.0 psu. Results indicate a decrease in larval growth between day 3 and 4 after hatching, when larvae opened their mouths,...
Tipo: Journal Contribution Palavras-chave: Fish culture; Marine fish; Fish larvae; Metabolism; Oxygen consumption; Fish culture; Metabolism; Fish larvae; Oxygen consumption; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_4769; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_5478.
Ano: 2006 URL: http://hdl.handle.net/1834/1557
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Differences between remaining ability and loss of capacity in maximum aerobic impairment BJMBR
Neder,J.A.; Nery,L.E.; Bagatin,E.; Lucas,S.R.; Anção,M.S.; Sue,D.Y..
In the evaluation of exercise intolerance of patients with respiratory diseases the American Medical Association (AMA) and the American Thoracic Society (ATS) have proposed similar classifications for rating aerobic impairment using maximum oxygen uptake (VO2max) normalized for total body weight (ml min-1 kg-1). However, subjects with the same VO2max weight-corrected values may have considerably different losses of aerobic performance (VO2max expressed as % predicted). We have proposed a new, specific method for rating loss of aerobic capacity (VO2max, % predicted) and we have compared the two classifications in a prospective study involving 75 silicotic claimants. Logistic regression analysis showed that the disagreement between rating systems (higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Disability evaluation; Work capacity; Exercise tolerance; Oxygen consumption; Occupational diseases.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000500006
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Does dietary n-3 highly unsaturated fatty acids level influence the European sea bass (Dicentrachus labrax) capacity to adapt to a high temperature? ArchiMer
Person, Jeannine; Skalli, Ali; Dulau, Barbara; Le Bayon, Nicolas; Le Delliou, Herve; Robin, Jean.
Triplicate groups of European sea bass juveniles (60 g) were fed for 84 days two experimental diets containing either vegetable or marine oil (0.4 and 2.2% n-3 highly unsaturated fatty acid [n-3 HUFA] dry matter in LD and HD, respectively) and held at 22 or 29 degreesC (LD-22, LD-29, HD-22 and HD-29 groups). Significant differences in mass gain between the two diets and temperatures were, observed from day 28 onwards, and on day 84, weight was 18% higher in the HD-29 group than in the LD-22 group (the highest and lowest values. respectively). Over the 84-day period-SGR was significantly affected both by temperatures and diets (P=6x10(-4) and 2x10(-4) respectively), averaging 1.01 and 1.07 in the HD-22 and HD-29 groups compared to 0.92 and 1.0 in the LD-22...
Tipo: Text Palavras-chave: Oxygen consumption; Fatty acid composition; Growth; Temperature; N 3 HUFA; European sea bass.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-502.pdf
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Ecophysiological and metabolic adaptations to sulphide exposure of the oyster Crassostrea gigas ArchiMer
Le Moullac, Gilles; Cheize, Marie; Gastineau, Olivier; Daniel, Jean-yves; Le Coz, Jean-rene; Huvet, Arnaud; Moal, Jeanne; Pouvreau, Stephane; Van Wormhoudt, A; Samain, Jean-francois.
The purpose of this study is to examine the response of the oyster Crassostrea gigas to sulphide at different biological scales. A first experiment was designed to measure for 20 h the clearance (CR) and oxygen consumption (OC) rates of oysters exposed at different concentrations of sulphide (0, 3, 6, 12, 20, and 40 mu M). The second experiment was carried out to evaluate the metabolic adaptations to chronic sulphide exposure for 10 days by measuring PK and PEPCK enzyme activities, succinate and alanine content, the adenylate energy charge (AEC), and the activity of the electron transport system (ETS)in whole oysters at above 20 mu M. PK and PEPCK mRNAs and enzyme activities have been measured in adductor muscle. When exposed to sulphide above 20 mu M, CR...
Tipo: Text Palavras-chave: ATP; AEC; Electron transport system; Succcinate; Alanine; Phosphoenolpyruvate carboxykinase; Pyruvate kinase; Oxygen consumption; Clearance rate; Crassostrea gigas; Sulphide; Oyster.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-3924.pdf
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Effect of exposure to petroleum hydrocarbons upon cardio-respiratory function in the common sole (Solea solea) ArchiMer
Claireaux, Guy; Davoodi, Fariba.
The long term consequences of oil exposure upon marine populations are still poorly evaluated. One particular missing piece of information relates to the link between oil exposure, individuals' ability to face environmental contingencies and populations' production and dynamics. In that context, the present paper investigates the impact of oil exposure upon fish cardio-respiratory performance, this performance being viewed as a key determinant of individual fitness. Experimental conditions replicated the contamination conditions observed during the weeks that immediately followed the Erika oil spill (west coast of France; December 1999). Sole (Solea solea), were exposed to number-2 oil for 5 days and were then challenged with an acute rise in temperature...
Tipo: Text Palavras-chave: Petroleum hydrocarbons; Temperature; Oxygen consumption; Cardiac performance; Environmental adaptation; Solea solea.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00006/11765/9272.pdf
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Effect of Fouling on Feeding, Oxygen Consumption and Waste Excretion of Pearl Oyster Pinctada martensii in Daya Bay Cultivation. OceanDocs
Su, Zhenxia; Yan, Yan; Huang, Liangmin.
Biofouling is a particular problem in the pearl oyster culture. It may reduce the growth and survival rates of the cultured species. Foulers are often themselves filter feeders, and are therefore potential competitors for food resource with the cultured species. Fouling organisms may also reduce the oxygen supply. A study was conducted to measure the impact of foulers on feeding, oxygen consumption, and waste excretion. POM, ammonia, phosphate and oxygen concentration were measured in various treatments (cultured species,foulers). This study showed that fouling organisms had significant effect on food uptake, oxygen consumption and waste excretion. The clearance rate, ammonia and phosphate release rate, oxygen consumption rate of the fouled pearl oyster...
Tipo: Journal Contribution Palavras-chave: Pearl oysters; Foulers; Oxygen consumption; Excretion.
Ano: 2007 URL: http://hdl.handle.net/1834/5861
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Effects of hypoxia on growth and metabolism of juvenile turbot ArchiMer
Pichavant, Karine; Person, Jeannine.
The effects of hypoxia on growth, feed efficiency, nitrogen excretion, oxygen consumption and metabolism of juvenile turbot (120 g) were studied in a 45-day experiment carried out in sea water at 17.0 +/- 0.5 degrees C and 34.5 ppt salinity. Fish were fed to satiation at O-2-concentrations of 3.5 +/- 0.3, 5.0 +/- 0.3 mg l(-1) (hypoxia) and 7.2 +/- 0.3 mg l(-1) (normoxia). Both feed intake (FI) and growth were significantly lower under hypoxia than under normoxia, with no significant differences being observed between 3.5 and 5.0 mg O-2 l(-1). During the first 2 weeks of the experiment, FI was halved under hypoxic conditions, and there were large differences among treatments in feed conversion ratio (FCR), i.e., it was 3.2, 1.5, and 0.9 in turbot exposed to...
Tipo: Text Palavras-chave: Acid base status; Ion regulation; Nitrogen excretion; Oxygen consumption; Feed utilization; Growth; Hypoxia; Turbot.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/publication-631.pdf
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Effects of temperature on growth and metabolism in a Mediterranean population of European sea bass, Dicentrarchus labrax ArchiMer
Person, Jeannine; Mahe, Kelig; Le Bayon, Nicolas; Le Delliou, Herve.
Growth and metabolism of juvenile European sea bass of a Western Mediterranean population were assessed at six constant temperatures (13, 16, 19, 22, 25 or 29 degreesC) in an 84-day trial. Duplicated groups of 84 fish (initial weight 80 I g) were held under O-2-concentrations close to saturation (87 mg l(-1)) and were fed to satiation. Mass gain increased as temperature increased from 13 to 25 degreesC. At 25 and 29 degreesC, growth was similar up to day 72, but a 6% decrease was observed by day 84 at 29 degreesC. Days 0-84 specific growth rates (SGR) were 0.45%,1.29% and 1.21% day(-1) at 13, 25 and 29 degreesC, respectively. The estimated temperature (7) for maximum SGR was 26 degreesC (SGR = 1.715 - 0.322T + 0.022T(2) - 4.233e(-4)T(3)). Feed intake (FI)...
Tipo: Text Palavras-chave: Oxygen consumption; Fish culture; Thermal requirement; Metabolic rate; Feeding.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-626.pdf
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Etude ecophysiologique de quelques mollusques bivalves ArchiMer
Riva, A; Masse, H.
Using an experimental flowing system, the filtration rate of Mytilus galloprovincialis, Ostrea edulis, Ruditapes decussatus and Ruditapes aureus has been measured by an indirect technique under Mediterranean thermal conditions in coastal open sea. The oxygen consumption and excretion rate of ammonia have been estimated and influence of temperature and salinity tested for M. galloprovincialis . The results are discussed and compared to literature data.
Tipo: Text Palavras-chave: Ruditapes decussatus; Ostrea edulis; Mytilus galloprovincialis; Bivalvia; Respiration; Excretion; Oxygen consumption; Water filtration; Ecophysiology; Méditerranéee; Excrétion; Respiration; Filtration; Bivalves.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1177.pdf
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Etude experimentale preliminaire sur les echanges gazeux chez Pinna nobilis ArchiMer
Vicente, N; Riva, A; Butler, A.
Breathing exchanges of Pinna nobilis L. are studied in situ and in the laboratory with two methods. First method consist in introducing samples of Pinna under a 40l plexiglass bell equipped with haps. The bell is positionned by diving. The consumption of oxygen is observed with water samples and the oxygen concentration is measured with an electronic oxymeter. Experiments which are carried out during nycthemeral cycles are reproduced in the laboratory with the same type of bell. A second method carry into effect an apparatus more sophisticated, who put into circulation a current of water in an airtight thermostated cellule, where a specimen of young Pinna is introduced. This sample is gradually adaptated to the conditions of the medium. Breathing...
Tipo: Text Palavras-chave: Pinna nobilis; Bivalvia; Temperature; Metabolism; Oxygen consumption; Experimental research; Breathing mixtures; Marine molluscs.
Ano: 1991 URL: http://archimer.ifremer.fr/doc/1991/acte-1761.pdf
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Evaluation of the defensive behavior of two honeybee ecotypes using a laboratory test Genet. Mol. Biol.
Andere,Cecilia; Palacio,M.A.; Rodriguez,E.M.; Figini,E.; Dominguez,M.T.; Bedascarrasbure,E..
Honeybee defensive behavior is a useful selection criterion, especially in areas with Africanized honeybees (Apis mellifera L). In all genetic improvement programs the selected characters must be measured with precision, and because of this we evaluated a metabolic method for testing honeybee defensive behavior in the laboratory for its usefulness in distinguishing between honeybee ecotypes and selecting honeybees based on their level of defensive responses. Ten honeybee colonies were used, five having been produced by feral queens from a subtropical region supposedly colonized by Africanized honeybees and five by queens from a temperate region apparently colonized by European honeybees. We evaluate honeybee defensive behavior using a metabolic test based...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Honeybee; Defensive behavior; Oxygen consumption.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000100011
Registros recuperados: 40
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