Correction to: How does light availability affect the aboveground biomass allocation and leaf morphology of saplings in temperate mixed deciduous forests?     

Daryaei  Ardalan  Sohrabi  Hormoz  Puerta-Piñero  Carolina 《New Forests》2019,50(3):423-423

New Forests - The original version of this article was inadvertently published without the acknowledgements section.  相似文献   

Use of ACP‐104 at Different Dilutions for Sperm Cryopreservation of Dourado,Salminus brasiliensis     

Ana Carolina V. Zanandrea  Marcos Weingartner  Evoy Zaniboni‐Filho 《Journal of the World Aquaculture Society》2014,45(1):82-87

The dourado, Salminus brasiliensis, is an important fish in South American river basins. The fish‐farming potential and concerns for its conservation in watersheds has stimulated studies with this species. This study compared the effect of different dilutions of two cryoprotectant solutions on the quality of cryopreserved dourado sperm (duration of motility/motility rate) post‐thawing using three different activating solutions. The cryoprotectant solution ACP‐104 was compared with the cryoprotectant solution most commonly used for dourado, which consists of a mixture of dimethyl sulfoxide, glucose, egg yolk, and distilled water. The semen was mixed following dilutions of semen : cryoprotectant solution: 1:3, 1:9, 1:15, 1:21, and 1:27. The cryopreserved samples were activated using distilled water, 0.45% NaCl or 1% NaHCO₃. The results showed differences in thawed semen using the different activating solutions and cryoprotectant solutions. The glucose‐based cryoprotectant not only resulted in sperm motility equal to or better than that produced by ACP‐104, but the quality was not affected by the dilution. However, the sperm quality improved with increasing dilutions for ACP‐104. Under the conditions tested, the standard cryoprotectant solution is recommended for the cryopreservation of dourado semen because it requires a lower solution volume and, therefore, reduced storage space for the same volume of semen.  相似文献   

Characterization and growth conditions of Vibrio parahaemolyticus strains with different virulence degrees that cause acute hepatopancreatic necrosis disease in Litopenaeus vannamei     

Sonia A. Soto‐Rodriguez  Rodolfo Lozano‐Olvera  Daniel A. Palacios‐Gonzalez  Carmen Bolan‐Mejia  Karla G. Rendon‐Aguilar 《Journal of the World Aquaculture Society》2019,50(5):1002-1015

The phenotypic characteristics and growth kinetics at several temperatures, salinities, and pH values of three Vibrio parahaemolyticus (Vp) strains with different virulence and one nonpathogenic strain were evaluated. Independent of the virulence of the strain, a high metabolic diversity was found, which yielded different colored phenotypes on the CHROMagar? Vibrio. All strains were resistant to ampicillin and carbenicillin, and Vp AHPND+ organisms were the most sensitive to enrofloxacin. The exponential growth of Vp strains started at 1–2 hr of incubation, although no relationship was observed between the bacterial density and degree of virulence. Moreover, the growth of the most virulent strain was independent of the nutrients in the incubation media during the initial hour postinoculation. No strain grew at 4°C in 0% NaCl and pH 4, but only Vp AHPND+ grew at 44°C. For all strains, the lag phase was proportional to the NaCl concentration, and the growth was better at pH 8–9. However, the Vp AHPND? strain displayed a greater variability, was more sensitive to extreme conditions, and showed a lag phase of 9 hr independent of the pH.  相似文献   

Chronological age and reservoir characteristics as predictors of trait composition in Neotropical reservoir fish assemblages     

Carolina M. Muniz  Natália C. L. dos Santos  Matheus T. Baumgartner  Angelo A. Agostinho  Luiz C. Gomes 《Ecology of Freshwater Fish》2020,29(2):241-251

One of the main impacts on aquatic environments is the alteration of flow regime, usually caused by dam construction. This impact changes the dynamics and functioning of the environment. We aimed to evaluate changes in the composition of functional traits of fish assemblages from 29 reservoirs of different chronological ages. We assessed if there were any alterations in trophic state of these reservoirs according to their ages (chronological variable). Then, we evaluated the relationship between functional traits and environmental/chronological variables. Results showed that reservoir age is a predictor of fish assemblage functional traits composition. In older reservoirs, there was a predominance of omnivorous species, with multiple spawning and parental care. However, herbivorous species, with total spawning and medium size, had their abundance reduced. Also, it was possible to identify the influence of depth and water retention time on the composition of functional traits. By showing that although age has an influence on composition, the intrinsic characteristics of each reservoir are very important in evaluating the impacts of these projects. Therefore, the findings presented provide insights into what may happen to functional traits of fish assemblages with ageing of reservoirs.  相似文献   

Prevalence and risk factors for anti-Toxoplasma gondii antibodies in goats of the Seridó Oriental microregion, Rio Grande do Norte state, Northeast region of Brazil     

Neto JO  Azevedo SS  Gennari SM  Funada MR  Pena HF  Araújo AR  Batista CS  Silva ML  Gomes AA  Piatti RM  Alves CJ 《Veterinary parasitology》2008,156(3-4):329-332

The prevalence and risk factors for anti-Toxoplasma gondii antibodies were investigated in goats of the Seridó Oriental microregion, Rio Grande do Norte state, Northeast region of Brazil. Three hundred and sixty-six blood samples from goats collected by jugular venopuncture were used. For the serologic diagnosis of Toxoplasma gondii infection, the indirect fluorescent-antibody test (IFAT) with cut-off value 1:64 was carried out. The prevalence of anti-T. gondii antibodies was 30.6% [95% CI=25.9-35.6%] with titers ranging from 1:64 to 1:16,384. The multivariate logistic regression analysis showed that the risk factors associated to anti-T. gondii antibodies were presence of cats in the herd, extensive/semi-intensive management systems and lack of mineral supplementation.  相似文献   

Evaluation of perinuclear anti-neutrophilic cytoplasmic autoantibodies as an early marker of protein-losing enteropathy and protein-losing nephropathy in Soft Coated Wheaten Terriers     

Allenspach K  Lomas B  Wieland B  Harris T  Pressler B  Mancho C  Lees GE  Vaden SL 《American journal of veterinary research》2008,69(10):1301-1304

  相似文献   

Magnetic resonance imaging in the diagnosis of type 1 dermoid sinus in two Rhodesian ridgeback dogs     

Sheila Rahal  Ana Carolina Mortari  Seizo Yamashita  Miltom Morishin Filho  Eduardo Hatschbac  Júlio Lopes Sequeira 《The Canadian veterinary journal. La revue veterinaire canadienne》2008,49(9):871-876

Two cases of type 1 dermoid sinus in Rhodesian ridgebacks are described, with emphasis on the use of magnetic resonance imaging (MRI) in the diagnosis and delineation of the lesions. Magnetic resonance imaging was useful in identifying fluid-filled structures, fibrous capsules, and sinus tracts, but was not able to identify the termination of the tracts.  相似文献   

Assessment of brachial plexus blockade in chickens by an axillary approach     

Figueiredo JP  Cruz ML  Mendes GM  Marucio RL  Riccó CH  Campagnol D 《Veterinary anaesthesia and analgesia》2008,35(6):511-518

ObjectiveTo assess the brachial plexus block in chickens by an axillary approach and using a peripheral nerve stimulator.Study designProspective, randomized, double-blinded study.AnimalsSix, 84-week old, female chickens.MethodsMidazolam (1 mg kg⁻¹) and butorphanol (1 mg kg⁻¹) were administered into the pectoralis muscle. Fifteen minutes later, the birds were positioned in lateral recumbency and following palpation of the anatomic landmarks, a catheter was inserted using an axillary approach to the brachial plexus. Lidocaine or bupivacaine (1 mL kg⁻¹) was injected after plexus localization by the nerve stimulator. Sensory function was tested before and after blockade (carpus, radius/ulna, humerus and pectoralis muscle) in the blocked and unblocked wings. The latency to onset of motor and sensory block and the duration of sensory block were recorded. A Friedman nonparametric one-way repeated-measures anova was used to compare scores from baseline values over time and to compare the differences between wings at each time point.ResultsA total of 18 blocks were performed with a success rate of 66.6% (12/18). The latency for motor block was 2.8 ± 1.1 and 3.2 ± 0.4 minutes for lidocaine and bupivacaine, respectively. The latencies for and durations of the sensory block were 6.0 ± 2.5 and 64.0 ± 18.0 and 7.8 ± 5.8 and 91.6 ± 61.7 minutes for lidocaine and bupivacaine, respectively. There was no statistical difference between these times for lidocaine or bupivacaine. Sensory function was not abolished in nonblocked wings.Conclusions and clinical relevanceThe brachial plexus block was an easy technique to perform but had a high failure rate. It might be useful for providing anesthesia or postoperative analgesia of the wing in chickens and exotic avian species that have similar wing anatomy.  相似文献   

Effect of different protocols on the mitigation of exercise‐induced pulmonary hemorrhage in horses when administered 24 hours before strenuous exercise     

Warwick Bayly  Carolina Lopez  Raymond Sides  Gerald Bergsma  Jenyka Bergsma  Jenifer Gold  Debra Sellon 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2019,33(5):2319-2326

  相似文献   

Low‐density lipoproteins and milk serum proteins improve the quality of stallion sperm after vitrification in straws     

Cesar Consuegra  Francisco Crespo  Jesús Dorado  Maria Diaz‐Jimenez  Blasa Pereira  Manuel Hidalgo 《Reproduction in domestic animals》2019,54(Z4):86-89

Lipids and proteins can be used for sperm vitrification to preserve the integrity of sperm membranes or to increase the viscosity of the medium. This study evaluated the effect of low‐density lipoproteins (LDL) and milk serum proteins (Pronexcell) for stallion sperm vitrification. Hippex extender (Barex Biochemical Products, The Netherlands), plus 1% of bovine serum albumin and 100 mM of trehalose, was used as control for sperm vitrification. In experiment 1, different concentrations of LDL (L1 = 0.25, L2 = 0.5, L3 = 1%) and in experiment 2 of Pronexcell (P1 = 1, P2 = 5, P3 = 10%) were added to control extender. Vitrification was performed in 0.25‐ml straws directly plunged into liquid nitrogen. Total motility (TM, %) and progressive motility (PM, %) were analysed by CASA, and plasma membrane (IMS, %) and acrosome membrane integrity (AIS, %) were assessed under epifluorescence microscopy. Post‐warmed sperm parameters were compared between treatments by ANOVA. Results were expressed as mean ± SEM. In both experiments, the minimum concentration of LDL and Pronexcell obtained significantly higher values (p < 0.01) than the control extender for TM (L1 = 52.95 ± 4.4; P1 = 58.99 ± 4.6; C = 30.88 ± 3.0), PM (L1 = 36.79 ± 5.5; P1 = 47.25 ± 4.3; C = 19.20 ± 2.4), IMS (L1 = 68.88 ± 3.6; P1 = 47.25 ± 4.3; C = 52.81 ± 2.6) and AIS (L1 = 45.88 ± 3.6; P1 = 47.25 ± 4.3; C = 26.00 ± 2.1). No differences in sperm parameters were found among different concentrations of LDL or Pronexcell. In conclusion, the addition of 0.25% LDL and 1% Pronexcell to the vitrification extender is recommended to improve the quality of stallion sperm after vitrification.  相似文献