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Osmoregulatory responses to dietary protein and water intake in the granivorous Zonotrichia capensis (Passerine, Emberizidae) RChHN
ALDEA,PATRICIA; SABAT,PABLO.
We studied the osmoregulatory responses of the granivore Zonotrichia capensis, acclimated to high- and low-protein diets as well as two levels of water intake. We tested whether Z. capensis has the ability to modify the proportion of nitrogenous waste in the excreta when protein intake and water intake varies. After 21 days of acclimation, plasma osmolality was not significantly affected by dietary treatment; however, excreta osmolality was higher in the high-protein group compared to the low-protein group. Nitrogenous wastes in Z. capensis are excreted mainly in the form of uric acid. The proportion of kidney devoted to medullary tissue was 40 % higher in dehydrated birds than in hydrated birds. Excreta osmolality was higher in dehydrated birds, and in...
Tipo: Journal article Palavras-chave: Granivory; Kidney; Nitrogenous waste; Osmoregulation; Passerines.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2007000400006
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Description of the unusual digestive tract of Platax orbicularis and the potential impact of Tenacibaculum maritimum infection ArchiMer
Alix, Maud; Gasset, Eric; Bardon-albaret, Agnes; Noel, Jean; Pirot, Nelly; Perez, Valérie; Coves, Denis; Saulnier, Denis; Lignot, Jehan-hervé; Cucchi, Patricia N..
Background Ephippidae fish are characterized by a discoid shape with a very small visceral cavity. Among them Platax orbicularis has a high economic potential due to its flesh quality and flesh to carcass ratio. Nonetheless, the development of its aquaculture is limited by high mortality rates, especially due to Tenacibaculum maritimum infection, occurring one to three weeks after the transfer of fishes from bio-secure land-based aquaculture system to the lagoon cages for growth. Among the lines of defense against this microbial infection, the gastrointestinal tract (GIT) is less studied. The knowledge about the morphofunctional anatomy of this organ in P. orbicularis is still scarce. Therefore, the aims of this study are to characterize the GIT in...
Tipo: Text Palavras-chave: Digestive system; Tenacibaculosis; Mucous; Osmoregulation; Absorption; Batfish; Teleost.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00652/76421/77485.pdf
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Activity determination of Na+ K+ - ATPase and Mg++ - ATPase enzymes in the gill of Poecilia vivipara (Osteichthyes, Cyprinodontiformes) in different salinities BABT
Amaral,Marcelo da Cunha; Bonecker,Ana Cristina Teixeira; Ortiz,Cláudio H. D..
This work aimed to know the tolerance mechanisms through the salinity variation by Na+ K+ - ATPase and Mg++ - ATPase and enzymes encountered in the gills of Poecilia vivipara. In field, the presence of this species was observed in salinities of 0 and 28‰. In laboratory, these fish were maintained in aquarium with mean salinity of 30‰ and positive responses were obtained. Some adult specimens, collected in a lagoon of the Coqueiros Beach, were utilized as matrixes. In the experiments the specimens used were those born in the test aquarium. For each salinity studied three replicates were made with three specimens for each one. The alevins were maintained in salinities of 5, 10, 15, 20, 25, 30 and 35‰ during a month for adaptation. Gills were extracted in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Poecilia vivipara; Na+ K+ ATPase; Mg++ ATPase; Osmoregulation.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000100001
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Salt concentrations in culture media for the development of Dipteryx alata in vitro PAB
Araruna,Elequisandra da Costa; Ribeiro-Oliveira,João Paulo; Pereira,Vanderley José; Asmar,Simone Abreu; Melo,Berildo de.
Abstract: The objective of this work was to evaluate how salt concentrations in media used for in vitro cultures affect the early development of “barueiro” (Dipteryx alata) seedlings obtained from the shoot apex. Two different in vitro culture media - Murashige & Skoog (MS) and wood plant medium (WPM) - in different salt concentrations (25, 50, 75, and 100%) were used. At 120 days, the D. alata seedlings in the MS medium, in its original concentration (100%), developed better than in other concentrations or in the WPM. Therefore, the MS medium was considered the most suitable for ensuring in vitro establishment because it provided greater root length (27.65 cm) and number of leaves per plant (26 leaves) than the other medium.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado biome; Culture media; Osmoregulation; Plant growth; Salt concentrations; Tissue culture.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001201295
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Effects of salt stress on plant growth, stomatal response and solute accumulation of different maize genotypes Braz. J. Plant Physiol.
Azevedo Neto,André Dias de; Prisco,José Tarquinio; Enéas-Filho,Joaquim; Lacerda,Claudivan Feitosa de; Silva,José Vieira; Costa,Paulo Henrique Alves da; Gomes-Filho,Enéas.
Seeds from eight different maize genotypes (BR3123, BR5004, BR5011, BR5026, BR5033, CMS50, D766 and ICI8447) were sown in vermiculite, and after germination they were transplanted into nutrient solution or nutrient solution containing 100 mmol.L-1 of NaCl and placed in a greenhouse. During the experimental period plant growth (dry matter, shoot to root dry mass ratio, leaf area, relative growth rate, and net assimilation rate), leaf temperature, stomatal conductance, transpiration, predawn water potential, sodium, potassium, soluble amino acids and soluble carbohydrate contents were determined in both control and salt stressed plants of all genotypes studied. Salt stress reduced plant growth of all genotypes but the genotypes BR5033 and BR5011 were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth analysis; Osmoregulation; Salinity; Transpiration; Zea mays; Water relations.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000100005
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Dissolved oxygen and ammonia levels in water that affect plasma ionic content and gallbladder bile in silver catfish Ciência Rural
Becker,Alexssandro Geferson; Garcia,Luciano de Oliveira; Kochhann,Daiani; Gonçalves,Jamile Fabbrin; Loro,Vania Lúcia; Baldisserotto,Bernardo.
Ionic contents (Na+, K+ and Cl-) of plasma and gallbladder bile (GB) of juveniles silver catfish, Rhamdia quelen (156.1±0.2g, 28.2±0.3cm), were determined in three different times (0, 6 and 24h) after exposure to: a) control or high dissolved oxygen (DO = 6.5mg L-1) + low NH3 (0.03mg L-1); b) low DO (3.5mg L-1) + low NH3; c) high DO + high NH3 (0.1mg L-1); and d) low DO + high NH3. High waterborne NH3 or low DO levels increased plasma and GB ion levels. These parameters might have followed different mechanisms to affect osmoregulation since a synergic effect of these variables was detected.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nitrogen compound; Hypoxia; Ion levels; Jundiá; Osmoregulation.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000600020
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Plasma ion levels of freshwater and marine/estuarine teleosts from Southern Brazil Neotropical Ichthyology
Becker,Alexssandro Geferson; Gonçalves,Jamile Fabbrin; Toledo,Jaderson dos Anjos; Burns,Marcelo D. M.; Garcia,Luciano de Oliveira; Vieira,João Paes; Baldisserotto,Bernardo.
The purpose of this study was to investigate Na+, Cl-, K+, Ca2+, and Mg2+ levels in the plasma of freshwater and marine/estuarine teleosts collected at different salinities (0 to 34) from the estuarine and freshwater portions of the São Gonçalo channel in Southern Brazil. Any relationship between plasma ion levels and salinity and the capacity of ionic regulation of teleosts found at three or more different salinities (Genidens barbus and Micropogonias furnieri) was also investigated. Results showed no relationship between plasma ion levels and salinity when considering all species together, but the two species collected from three or more different salinities showed a significant positive relationship between plasma ion levels and salinity, indicating...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ariidae; Estuaries; Ionoregulation; Osmoregulation; Salinity; Sciaenidae.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400021
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Ion uptake pathways in European sea bass Dicentrarchus labrax ArchiMer
Blondeau-bidet, Eva; Hiroi, Junya; Lorin-nebel, Catherine.
Ion uptake mechanisms are diverse in fish species, certainly linked to duplication events that have led to the presence of a multitude of paralogous genes. In fish, Na+ uptake involves several ion transporters expressed in different ionocyte subtypes. In the European sea bass Dicentrarchus labrax, several key transporters potentially involved in Na+ uptake have been investigated in seawater (SW) and following a 2 weeks freshwater (FW) acclimation. Using gel electrophoresis, we have shown that the Na+/H+-exchanger 3 (nhe3, slc9a3) is expressed in gills and kidney at both salinities. Quantitative realtime PCR analysis showed a significantly higher nhe3 expression in fresh water (FW) compared to SW. Its apical localization in a subset of gill ionocytes in...
Tipo: Text Palavras-chave: Teleost; Osmoregulation; Ion transporters; Na+ uptake; NHE3; NCC2.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00485/59618/62638.pdf
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The ClC-3 chloride channel and osmoregulation in the European Sea Bass, Dicentrarchus labrax ArchiMer
Bossus, Maryline; Charmantier, Guy; Blondeau-bidet, Eva; Valletta, Bianca; Boulo, Viviane; Lorin-nebel, Catherine.
Dicentrarchus labrax migrates between sea (SW), brackish and fresh water (FW) where chloride concentrations and requirements for chloride handling change: in FW, fish absorb chloride and restrict renal losses; in SW, they excrete chloride. In this study, the expression and localization of ClC-3 and Na+/K+-ATPase (NKA) were studied in fish adapted to SW, or exposed to FW from 10 min to 30 days. In gills, NKA-alpha 1 subunit expression transiently increased from 10 min and reached a stabilized intermediate expression level after 24 h in FW. ClC-3 co-localized with NKA in the basolateral membrane of mitochondria-rich cells (MRCs) at all conditions. The intensity of MRC ClC-3 immunostaining was significantly higher (by 50 %) 1 h after the transfer to FW,...
Tipo: Text Palavras-chave: ClC-3 chloride channel; Na+/K+-ATPase; Dicentrarchus labrax; Osmoregulation; Osmosensing.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00149/26044/25185.pdf
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Differential distribution of V-type H+-ATPase and Na+/K+-ATPase in the branchial chamber of the palaemonid shrimp Macrobrachium amazonicum ArchiMer
Boudour-boucheker, Nesrine; Boulo, Viviane; Charmantier-daures, Mireille; Grousset, Evelyse; Anger, Klaus; Charmantier, Guy; Lorin-nebel, Catherine.
V-H+-ATPase and Na+/K+-ATPase were localized in the gills and branchiostegites of M. amazonicum and the effects of salinity on the branchial chamber ultrastructure and on the localization of transporters were investigated. Gills present septal and pillar cells. In freshwater (FW), the apical surface of pillar cells is amplified by extensive evaginations associated with mitochondria. V-H+-ATPase immunofluorescence was localized in the membranes of the apical evaginations and in clustered subapical areas of pillar cells, suggesting labeling of intracellular vesicle membranes. Na+/K+-ATPase labeling was restricted to the septal cells. No difference in immunostaining was recorded for both proteins according to salinity (FW vs. 25 PSU). In the branchiostegite,...
Tipo: Text Palavras-chave: Osmoregulation; Na+/K+-ATPase; V-type H+-ATPase; Gills; Branchiostegite.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00202/31352/37901.pdf
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A transcriptomic approach of salinity response in the euryhaline teleost, Dicentrarchus labrax ArchiMer
Boutet, Isabelle; Ky, Chin Long; Bonhomme, Francois.
Euryhaline teleosts possess the capacity to osmoregulate under various environmental conditions (freshwater to hypersaline water). This physiological capacity is generally monitored using enzyme activity assays (Na+/K+-ATPase...), hormones quantification (prolactine, growth hormone) or their mRNAs expression. To date, few studies addressed the genetic correlates of adaptation to varying salinity at a molecular level in such fish. In the sea bass Dicentrarchus labrax, genetic differentiation was observed at specific allozyme loci between lagoon- and open-sea populations. In the present study, we investigated transcriptomic response of D. labrax to salt- and freshwater acclimation in two organs involved in osmoregulation, gill and intestine. By using...
Tipo: Text Palavras-chave: Suppression subtractive hybridisation; Carbonic anhydrase; Osmoregulation; MRNA expression; Sea bass.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1901.pdf
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Molecular characterisation of prolactin and analysis of extrapituitary expression in the European sea bass Dicentrarchus labrax under various salinity conditions ArchiMer
Boutet, Isabelle; Lorin Nebel, C; De Lorgeril, Julien; Guinand, B.
dAlthough prolactin has been demonstrated to be the main hormone involved in adaptation to dilute media in several freshwater teleosts, few studies have been conducted in marine teleosts. In the Mediterranean, the sea bass Dicentrarchus labrax inhabits environments ranging from the open sea to coastal lagoons, where salinity varies greatly. We characterised the prolactin (prl) gene and analysed its expression in two organs (gill and intestine) in D. labrax acclimated to either freshwater or seawater. A 2819 bp long sequence encompassing the prl gene and a part (282 bp) of the promoter were identified, and these comprised 5 coding exons separated by 4 introns. Prolactin was similarly expressed in fresh- and seawater adapted fish, although expression in...
Tipo: Text Palavras-chave: Prolactin; Phylogenctic analysis; MRNA expression; Osmoregulation; Intestine; Gill; Dicentrarchuslabrax.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2537.pdf
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Could a diet enriched with n-3 highly unsaturated fatty acids be considered a promising way to enhance the immune defences and the resistance of Penaeid prawns to environmental stress? ArchiMer
Chim, Liet; Lemaire, Pierrette; Delaporte, Maryse; Le Moullac, Gilles; Galois, Robert; Martin, Jean-louis.
The prawn Penaeus stylirostris (Stimpson), when fed for 28 days with n-3 highly unsaturated fatty acid (HUFA)-enriched feed pellets, demonstrated an enhanced resistance to variations in environmental parameters (a decrease in temperature and salinity over a 4-day period from 28 degreesC to 17 degreesC and from 35 parts per thousand to 10 parts per thousand respectively) and an improvement in their immune defence potential, i.e. increased agglutination titre of plasma and increased respiratory burst of haemocytes.
Tipo: Text Palavras-chave: Immunostimulation; Osmoregulation; Environment; Stress; Essential fatty acids; Crustaceans.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/publication-606.pdf
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Physiological responses of two ecologically important Kenyan mangrove crabs exposed to altered salinity regimes OceanDocs
De Wachter, B.; Gillikin, D.P.; Tack, J..
The potential long-term effects of altered salinity regimes on the bioenergetics of two ecologically important Kenyan mangrove crabs, Neosarmatium meinerti de Man, 1887 and Neosarmatium smithi H. Milne Edwards, 1853 were investigated in light of recent findings suggesting that groundwater redirection may alter salinity regimes in Kenyan mangroves. Although changes in groundwater may cause only small increases in salinities, these changes would be chronic and may impact crab populations already living above their optimal salinity. To assess potential impacts, fundamental physiological processes and hemolymph components were measured on animals acclimated to 16‰, 32‰, 48‰ and 65‰ for 4 weeks in a field laboratory. For comparative purposes, crabs were also...
Tipo: Journal Contribution Palavras-chave: Ecophysiology; Salinity Tolerance; Energy Budget; Osmoregulation; Sesarmidae; Crab fisheries.
Ano: 2004 URL: http://hdl.handle.net/1834/693
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An economic evaluation of the osmoregulation gene technology to the Australian wheat industry AgEcon
Farquharson, Robert J.; Morgan, J.M.; Brennan, John P..
Episodes of rainfall irregularity and soil moisture deficit have focused attention on the widespread limitation of water supply on winter cereal crop production in Australia. This has motivated a number of efforts at breeding for improved drought tolerance. A recent example involves a cellular adaptation which mitigates water loss through solute accumulation (osmoregulation or osmotic adjustment). An assessment of the performance of osmoregulation yield response in the presence of climate change found that wheat cultivars with this gene are unlikely to be adversely affected by hotter and drier conditions across the wheat belt. The results of an economic evaluation of potential future innovations (wheat cultivars) from the osmoregulation gene technology are...
Tipo: Conference Paper or Presentation Palavras-chave: Economic evaluation; Wheat breeding; Osmoregulation; Crop Production/Industries; Research Methods/ Statistical Methods.
Ano: 2004 URL: http://purl.umn.edu/58446
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Oxygen consumption remains stable while ammonia excretion is reduced upon short time exposure to high salinity in Macrobrachium acanthurus (Caridae: Palaemonidae), a recent freshwater colonizer Rev. Bras. Zool.
Freire,Carolina A.; Rios,Leonardo de P.; Giareta,Eloísa P.; Castellano,Giovanna C..
ABSTRACT Palaemonid shrimps occur in the tropical and temperate regions of South America and the Indo-Pacific, in brackish/freshwater habitats, and marine coastal areas. They form a clade that recently (i.e., ~30 mya) invaded freshwater, and one included genus, Macrobrachium Bate, 1868, is especially successful in limnic habitats. Adult Macrobrachium acanthurus (Wiegmann, 1836) dwell in coastal freshwaters, have diadromous habit, and need brackish water to develop. Thus, they are widely recognized as euryhaline. Here we test how this species responds to a short-term exposure to increased salinity. We hypothesized that abrupt exposure to high salinity would result in reduced gill ventilation/perfusion and decreased oxygen consumption. Shrimps were subjected...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ammonia; Lactate; Osmoregulation; Palaemonidae.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100323
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Incidence de la salinite sur les equilibres de distribution hydrique et ioniques et sur le metabolisme respiratoire dans le muscle blanc, le muscle rouge et la branchie chez le muge Chelon labrosus ArchiMer
Gallis, J; Piquemal, S; Lambert, J; Sergent, P; Rousseau, V.
Oxygen consumption, water, K super(+) and Na super(+) contents were measured in white muscle, red muscle and gill epithelium in the mullet Chelon labrosus) in relation with the duration of fresh water or sea water (1500mOsm) adaptation. The unit respiratory activities in gill and red muscle where respectively 5 and 3 timesmore elevated than in white muscle. The pericellular K super(+)/Na super(+) ratio of the 3 tissues decreased with the fresh water adaptation duration. In the gill, the intracellular K super(+)/Na super(+) ratio was stable while the parameter decreased strongly in the white muscle. The results are discussed in relation to energetic cost of homocellular regulation and homoepithelial regulation.
Tipo: Text Palavras-chave: Chelon labrosus; Mugilidae; Pisces; Gills; Muscles; Oxygen consumption; Respiration; Ions; Water balance; Osmoregulation; Salinity effects.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1251.pdf
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Digestive tract ontogeny of Dicentrarchus labrax: Implication in osmoregulation ArchiMer
Giffard, I; Charmantier, G; Grousset, E; Aujoulat, F; Castille, R.
The ontogeny of the digestive tract (DT) and of Na+/K+-ATPase localization was investigated during the early postembryonic development (from yolk sac larva to juvenile) of the euryhaline teleost Dicentrarchus labrax reared at two salinities: seawater and diluted seawater. Histology, electron microscopy and immunocytochemistry were used to determine the presence and differentiation of ion transporting cells. At hatching, the DT is an undifferentiated straight tube over the yolk sac. At the mouth opening (day 5), it comprises six segments: buccopharynx, esophagus, stomach, anterior intestine, posterior intestine and rectum, well differentiated at the juvenile stage (day 72). The enterocytes displayed ultrastructural features similar to those of...
Tipo: Text Palavras-chave: Osmoregulation; Na+/K+ ATPase; Immunolocalization; Fish larva; Enteric ionocyte.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-4653.pdf
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Change of osmoregulatory and hematological parameters in tilapia (Oreochromis niloticus) after exposure to sublethal mercury concentrations ArchiMer
Handayani, Kiki Syaputri; Soegianto, Agoes; Lignot, Jehan-hervé.
The effects of Hg exposure on blood parameters and gill physiology of tilapia (Oreochromis niloticus) were analyzed. Fish maintained in freshwater were exposed for 7 days (d) to sublethal mercury concentrations (0.1 and 1 mg/L). Blood serum osmolality (SO), sodium (Na+), potassium (K+) and chloride (Cl−) ionic concentrations, and hematological parameters were assessed after 1 up to 7 d of exposure. Serum osmolality and ionic concentrations of exposed fish appeared differently affected throughout the experimental period compared to the controls. Osmolality was reduced at the 2 tested concentrations but Na+ and Cl− contents were only altered at 1 mg/L of Hg after 1 d of exposure and values rapidly returned to the control values thereafter. K+ content was...
Tipo: Text Palavras-chave: Mercury; Tilapia; Osmoregulation; Serum ions; Blood; Aquatic toxicology.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00648/76033/76943.pdf
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Evaporative water loss and dehydration during the night in hummingbirds RChHN
HARTMAN BAKKEN,BRADLEY; SABAT,PABLO.
Nectar-feeding birds oscillate between avoiding overhydration when they are feeding and preventing dehydration during fasts. Here, we examined how resting rates of total evaporative water loss (TEWL) and metabolic water production (MWP) influence water balance in the green-backed firecrown (Sephanoides sephanoides), a Chilean hummingbird. We hypothesized that a circadian rhythm in TEWL would assuage the dehydration risk that hummingbirds face during the night. However, we did not find support for this idea. In resting hummingbirds, rates of TEWL during the day (54 ±6 µLh-1,n = 8) and night (65 ± 12 h-1, n = 5) were similar. Rates of MWP were also similar between the day (22 ±3 µL h-1, n = 8) and night (23 ± 2 µL h-1, n = 5). MWP rates were significantly...
Tipo: Journal article Palavras-chave: Circadian rhythm; Evaporative water loss; Hummingbird; Osmoregulation; Water balance.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2007000300001
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