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| Registros recuperados: 187 | |
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| Waissel,I.; Mineo,J.R.; Natal,C.L.. |
| In the present investigation we studied some behavioral and immunological parameters of adult gastropod mollusk, Biomphalaria tenagophila, which have been reproducing for several generations under laboratory conditions. One group of gastropods was kept on a 14-h light/10-h dark cycle, corresponding to a regular circadian cycle, and another group was exposed to continuous light for 48 h. Animals were studied along (behavioral groups) or immediately after (immunological groups) 48 h of regular circadian cycle or continuous light conditions. Stopping/floating, dragging and sliding were the behavioral aspects considered (N = 20 for regular cycle; N = 20 for continuous illumination) and number of hemocytes/µl hemolymph was the immunological parameter studied (N... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Circadian cycle; Mollusk; Neuroimmunology; Stress; Behavior. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001200014 |
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| OLIVEIRA,FABRÍCIO S.; MACITELLI,FERNANDA; SANTOS,CAIO C.C.; BRAGA,JANAINA S.; COSTA,BARBARA C.; PASTORE,MARINA; ROCHA,THIAGO A.S.S.; COSTA,MATEUS J.R.P. DA. |
| Abstract Chronic stress exposure commonly increases adrenals weight and changes their morphology. This study aimed to compare four methods to delimitate the cortical and medullary layers of adrenals glands in Nelore bulls. Fresh adrenals did not present differentiation between layers. Then, frozen adrenals were distributed in plastics bags with fixative Bouin (G1), 96ºGL ethylic alcohol (G2), 10% formaldehyde (G3), or 2.5% glutaraldehyde (G4). After 12 hours of fixation, the G1 adrenal glands did not show the entire cortical layer marked by Bouin’s solution. For G2 and G3 there was a poor contrast, while for G4 there was a reasonable contrast. After 24 hours of fixation, G1 had an excellent contrast between layers, while G2 and G4 had a reasonable contrast... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal welfare; Morphometry; Stress; Anatomy; Gland. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703887 |
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| Mugnier, Chantal; Justou, Carole. |
| The effect of ambient ammonia and molt stage on the physiological response of the blue shrimp Litopenaeus stylirostris was studied. Shrimps were submitted to 54.6 mg l(-1) ammonia-N (1.76 mg l(-1) NH3-N) for 24 h. Only shrimps in stages C, D-0, D-1 and D-2 were used for the analysis. Haemolymph was assayed for osmoregulatory capacity (OC), magnesium ion (Mg ion), total proteins, oxyhaemocyanin, lactate and glucose. Molt stage had an effect on OC, Mg ion and total proteins in control shrimps, and on OC, Mg ion and lactate in treated animals. Ammonia treatment decreased OC and lactate, and increase Mg ion concentration in haemolymph, for all molt stages. It decreased significantly total proteins and oxyhaemocyanin for stages D-1 and D-2, and increased... |
| Tipo: Text |
Palavras-chave: Stress; Peneid shrimp; Molt stage; Litopenaus stylirostris; Haemolymph constituents; Ammonia. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-371.pdf |
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| González,María-Rosa; Hailemichael,Girma; Catalina,Álvaro; Martín,Pedro. |
| ABSTRACT: Although water deficit and iron deficiency chlorosis are common environmental stresses in the Mediterranean area, few data are reported in the literature on their effects on vineyards, when acting simultaneously. The main objective of this research was to study the combined effects of iron deficiency and water status on vigor, yield and fruit composition in rainfed vineyards. Moreover, the investigation aimed to evaluate the feasibility of using foliar chlorophyll content (Chl) and predawn leaf water potential (LWP), measured at veraison, to assess potential quality of grapes in the framework of precision viticulture. For this, 24 non-irrigated ‘Tempranillo’ vineyard subzones were monitored in Ribera del Duero (North-Central Spain) during three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera L.; Chlorophyll; Drought; Leaf area index; Stress. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001600473 |
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| Maria, Anna Carolina Barbosa Esteves; de Siqueira, Adriana; Salvagni, Fernanda Aucielo; Maiorka, Paulo César. |
| With the growth of the pet market and its innovations, ownersof dogs and cats have increasingly alternatives for the health andwelfare of their animals. Establishments of bathing and groomingare becoming more popular, as many owners do not have thetime and ability to provide the adequate hygiene of their pets.However, many pet owners and even veterinarians are unawarethat dogs and cats can die during bathing or grooming, due tostress. Death related to stress may happen to sick or healthyanimals, regardless of breed, age or sex. In the bathing andgrooming environment, the presence of stressors is inevitable,but some rules must be followed to minimize the stress in theseanimals. This paper aims to provide information about the causeof death of these animals... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forensic veterinary medicine; Grooming; Stress; Pulmonary hemorrhage; Trauma; Cruelty Medicina veterinária legal; Pet shop; Estresse; Hemorragia pulmonary; Trauma; Maus-tratos. |
| Ano: 2016 |
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/28823 |
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| Pacheco, Ana Cláudia; UNOESTE; Castro, Paulo Roberto Camargo e; ESALQ /USP; Souza, Gustavo Maia; UNOESTE. |
| O objetivo deste trabalho foi avaliar os efeitos da deficiência hídrica e aplicação de ácido abscísico (ABA) sobre aspectos fisiológicos e teor de flavonoides em plantas de calêndula. O experimento foi instalado em condições de casa-de-vegetação com plantas envasadas. No início do florescimento de plantas de calêndula, foram aplicados quatro intervalos de suspensão da irrigação (irrigação diária; três; seis e nove dias sem irrigar), acompanhados por três doses de ABA (0, 10 e 100 µM). Avaliou-se o conteúdo relativo de água na folha (CRA) e as trocas gasosas, utilizando-se um analisador portátil por infravermelho (A: fotossíntese líquida, gs: condutância estomática, E: transpiração, Ci: concentração intercelular de CO2 e EUA: eficiência de uso da... |
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Palavras-chave: 2.03.03.00-9 planta medicinal; Estresse; Metabolismo secundário 5.01.03.06-7 medicinal plant; Stress; Secondary metabolism. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6390 |
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| Dehghan Hesar, Hadi; Kalantari, Davood. |
| This study presents a numerical investigation regarding the stress distribution on the new designed disc harrow using the ANSYS software. A conventional disc, notched disc, and a biomimetic design inspired by the claw of the leatherwing were analyzed in two conventional plowed and unplowed soils and three tillage depths (4, 7 and 10 cm). Stress analysis for all treatments showed that the highest stress was imposed at the disc-stem junction. Meanwhile the highest deformation occurred at the lowest and the most external part of the discs (land line). The results obtained in this study indicated that the maximum stress exerted from tilling soil to discs increases linearly with tillage depth in both plowed and unplowed soils. Given these results, the maximum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stress; Disk harrow; Finite element; Resistance; Biomimetic. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3561 |
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| Andersen,M.L.; Bignotto,M.; Machado,R.B.; Tufik,S.. |
| Since both paradoxical sleep deprivation (PSD) and stress alter male reproductive function, the purpose of the present study was to examine the influence of PSD and other stressors (restraint, electrical footshock, cold and forced swimming, N = 10 per group) on steroid hormones in adult Wistar male rats. Rats were submitted to chronic stress for four days. The stressors (footshock, cold and forced swimming) were applied twice a day, for periods of 1 h at 9:00 and 16:00 h. Restrained animals were maintained in plastic cylinders for 22 h/day whereas PSD was continuous. Hormone determination was measured by chemiluminescent enzyme immunoassay (testosterone), competitive immunoassay (progesterone) and by radioimmunoassay (corticosterone, estradiol, estrone).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Paradoxical sleep deprivation; Stress; Testosterone; Progesterone; Estrogen; Corticosterone. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000600003 |
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| Registros recuperados: 187 | |
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