Antiparasitic efficacy of dietary administration of trichlorfon (Masoten®) in the control of Neoechinorhynchus buttnerae (Neochinorhynchidae) in Colossoma macropomum (Serrasalmidae)     

Castro  Liliane Araújo  Andrade-Porto  Sanny Maria  Oliveira  Rebeca Guimarães  Batista  Yasmin Luzeiro  Silva  Felipe Moura Araújo  Oliveira  Christiane Patrícia Feitosa  Affonso  Elizabeth Gusmão  Cruz  Claudinei  Tavares-Dias  Marcos 《Aquaculture International》2021,29(6):2477-2488

Aquaculture International - This study investigated the efficacy of trichlorfon against Neoechinorhynchus buttnerae, as well as its palatability, residue analysis, and the blood parameters of...  相似文献   

红松伐根分解过程中真菌动态研究   总被引：1，自引：0，他引：1  

法蕾  张春雨  赵秀海  贺伟 《浙江林业科技》2009,29(4)

对分解过程中红松伐根上着生的大型真菌子实体进行了研究,分析其变化动态,结果表明,在分解过程中,红松伐根上着生的大型真菌子实体种类较多,共涉及14个科,其中以层菌纲伞菌目的真菌数量最多;伐根上大型真菌的数量随分解时间的增加而增加,但是多样性却随分解时间的递增而降低,表明红松伐根上的真菌有随分解时间的增加而汇聚的现象;不同真菌在红松伐根分解过程中出现的时间不同,白蘑科和侧耳科是红松伐根分解过程中最常见的真菌类群.  相似文献   

Cellular and humoral immune responses of Senegalese sole,Solea senegalensis (Kaup), following challenge with two Photobacterium damselae subsp. piscicida strains from different geographical origins     

B Costas  P C N P Rêgo  I Simões  J F Marques  M Castro‐Cunha  A Afonso 《Journal of fish diseases》2013,36(6):543-553

The present study aimed to investigate leucocyte responses to inflammation as well as some innate immune parameters of Senegalese sole, Solea senegalensis, following challenge with two strains of Photobacterium damselae subsp. piscicida belonging to the European and Japanese clones described for this bacterium. Pathogenicity assays were performed to assess the virulence of each Photobacterium damselae subsp. piscicida strain for sole. Subsequently, fish were intraperitoneally injected with phosphate‐buffered saline (control) or two concentrations (2 × 10² and 2 × 10⁶ CFU mL^?1) of each bacterial strain and sampled after 6 and 24 h. Results showed that the European isolate induces a higher degree of response than the Japanese strain. While blood neutrophilia and monocytosis correlated well with the increase in neutrophil and macrophage numbers in the peritoneal cavity, fish infected with the European isolate presented higher peritoneal cell numbers than fish challenged with the Japanese strain. In addition, alternative complement pathway activity and respiratory burst of head kidney leucocytes increased significantly in fish infected with the European isolate. The enhanced innate immune response displayed by Senegalese sole challenged with the European isolate is probably due to the higher degree of virulence presented by this Photobacterium damselae subsp. piscicida strain.  相似文献   

Tissue expression of PPAR-alpha isoforms in Scophthalmus maximus and transcriptional response of target genes in the heart after exposure to WY-14643     

R. Urbatzka  S. Galante-Oliveira  E. Rocha  L. F. C. Castro  I. Cunha 《Fish physiology and biochemistry》2013,39(4):1043-1055

Peroxisome proliferator-activated receptors (PPARs) are involved in the regulation of lipid and carbohydrate metabolism and can be activated either by natural ligands as fatty acids or by synthetic ligands including several environmental chemicals. In this study, two PPARα isoforms (α1 and α2) were analyzed in turbot (Scophthalmus maximus) for a different tissue distribution. PPARα1 was ubiquitously expressed, while the PPARα2 was predominantly expressed in the heart. Following this result, turbot juveniles were exposed by injection to a synthetic selective PPARα agonist, WY-14643, for 14 days. Suppression subtractive hybridization (SSH) was performed with pools of heart samples of control and exposed fish to get insights into PPARα-regulated genes in the heart of juvenile turbot. Four genes were positively identified in the forward-subtracted and 12 genes in the reverse-subtracted cDNA SSH library, corresponding to the down-regulated and up-regulated genes in response to the WY-14643 treatment, respectively. The confirmation of these results in individual samples of juvenile turbot exposed to WY-14643 revealed a statistically significant mRNA induction of two cardiac muscle proteins (myosin light chain 2 and tropomyosin 4), which were shown to be involved in heart contraction and heartbeat regulation in other teleost species. Herewith, we showed for the first time that PPARα2 is predominantly expressed in the heart and that a PPARα agonist can induce the mRNA expression of cardiac muscle proteins in teleosts.  相似文献   

Non‐specific immune responses of Senegalese sole,Solea senegalensis (Kaup), head‐kidney leucocytes against Tenacibaculum maritimum     

B Costas  I Simões  M Castro‐Cunha  A Afonso 《Journal of fish diseases》2014,37(8):765-769

  相似文献   

Synthesis,theoretical studies,and effect on the photosynthetic electron transport of trifluoromethyl arylamides          下载免费PDF全文

Róbson Ricardo Teixeira  Marcus Vinícius de Andrade Barros  Gustavo Costa Bressan  Raoni Pais Siqueira  Fabíola Suelen dos Santos  Michele Bertazzini  Rudolf Kiralj  Márcia Miguel Castro Ferreira  Giuseppe Forlani 《Pest management science》2017,73(11):2360-2371

  相似文献   

Pulse pressure variation as a guide for volume expansion in dogs undergoing orthopedic surgery     

Denise T. Fantoni  Keila K. Ida  André M. Gimenes  Matheus M. Mantovani  Jacqueline R. Castro  Geni C.F. Patrício  Aline M. Ambrósio  Denise A. Otsuki 《Veterinary anaesthesia and analgesia》2017,44(4):710-718

Objective

To investigate whether pulse pressure variation (PPV) can predict fluid responsiveness in healthy dogs during clinical surgery.

Study design

Prospective clinical study.

Animals

Thirty-three isoflurane-anesthetized dogs with arterial hypotension during orthopedic surgery.

Methods

Fluid challenge with lactated Ringer's solution (15 mL kg^?1 in 15 minutes) was administered in mechanically ventilated dogs (tidal volume 10 mL kg^?1) with hypotension [mean arterial pressure (MAP) < 65 mmHg]. The volume expansion was considered effective if cardiac output (CO; transesophageal Doppler) increased by ≥ 15%. Cardiopulmonary data were analyzed using two-way ANOVA, receiver operating characteristics (ROC) curves and Spearman coefficient; p < 0.05 was considered significant.

Results

Effective volume expansion, mean ± standard deviation 42 ± 4% increase in CO (p < 0.0001) was observed in 76% of the dogs, resulting in a decrease in PPV (p < 0.0001) and increase in MAP (p < 0.0001), central venous pressure (CVP; p = 0.02) and ejection fraction (p < 0.0001) compared with before the fluid challenge. None of these changes occurred when volume expansion resulted in a nonsignificant CO increase of 4 ± 5%. No significant differences were observed in blood gas analysis between responsive and nonresponsive dogs. The increase in CO was correlated with the decrease in PPV (r = ?0.65; p < 0.0001) but absolute values of CO and PPV were not correlated. The PPV performance (ROC curve area: 0.89 ± 0.06, p = 0.0011) was better than that of CVP (ROC curve area: 0.54 ± 0.12) and MAP (ROC curve area: 0.59 ± 0.13) to predict fluid responsiveness. The best cut-off for PPV to distinguish responders and nonresponders was 15% (50% sensitivity and 96% specificity).

Conclusions and clinical relevance

In mechanically ventilated, healthy, isoflurane-anesthetized dogs, PPV predicted fluid responsiveness to volume expansion, and MAP and CVP did not show such applicability.  相似文献   

Morphologic and Cytochemical Characteristics of the Blood Cells of the Yellow‐Bellied Slider (Trachemys scripta scripta)          下载免费PDF全文

J. D. Hernández  P. Castro  P. Saavedra  P. Ramírez  J. Orós 《Anatomia, histologia, embryologia》2017,46(5):446-455

  相似文献   

Woody leguminous trees: New uses for sustainable development of drylands     

David Castro  Johanna Urzúa  Mariano Rodriguez-Malebran  Claudio Inostroza-Blancheteau 《Journal of Sustainable Forestry》2017,36(8):764-786

Woody leguminous species are valuable crops because of their nutritional, economic, and ecological characteristics. Such crops have aided in the recovery of marginal lands for agricultural development due to their ability to fix nitrogen, control erosion, and act as a refuge for other species, in addition to their capacity to improve soil mineral composition and microbial biodiversity. Nevertheless, some leguminous trees are recognized to be one of the worst invasive species that affect negatively biodiversity and the entire ecosystem balance. In this study, we review new global uses for some woody leguminous crops, highlighting new nutraceutical and pharmacological properties, their uses as bioenergy sources, and their ecological uses for bioremediation opening new possibilities of management. We aim to bring knowledge on the multiple benefits that these woody plants continue to provide to humans from economic, social, and environmental standpoints.  相似文献   

First report of Lasiodiplodia theobromae and L. venezuelensis associated with blue stain on Ficus insipida wood from the Natural Forest of Venezuela          下载免费PDF全文

S. R. Mohali  F. Castro‐Medina  J. R. Úrbez‐Torres  W. D. Gubler 《Forest Pathology》2017,47(5)

  相似文献