Effect of parental origin on early life history traits of European eel          下载免费PDF全文

Sebastian N. Politis  Johanna S. Kottmann  Ian A. E. Butts  Sune R. Sørensen  Jonna Tomkiewicz 《Reproduction in domestic animals》2018,53(5):1149-1158

Establishment of European eel (Anguilla anguilla) hatchery production will rely on selectively bred individuals that produce progeny with the best traits in successive generations. As such, this study used a quantitative genetic breeding design, between four females and nine males (four wild‐caught and five cultured), to investigate the effect of paternal origin (wild‐caught vs. cultured) and quantify the relative importance of parental effects, including genetic compatibility, on early life history (ELH) performance traits (i.e. fertilization success, embryonic survival at 32 hr post‐fertilization, hatch success and larval deformities at 2 days post‐hatch) of European eel. Wild‐caught males had higher (56%) spermatocrit values than cultured males (45%), while fertilization success, embryonic survival, hatch success and larval deformities were not significantly impacted by paternal origin. This demonstrates that short‐term domestication of male eels does not negatively affect offspring quality and enables the consideration of cultured male broodstock in future breeding programmes. Moreover, paternity significantly explained 9.5% of the variability in embryonic survival, providing further evidence that paternal effects need to be taken into consideration in assisted reproduction protocols. Furthermore, maternity significantly explained 54.8% of the variation for fertilization success, 61.7% for embryonic survival, 88.1% for hatching success and 62.8% for larval deformities, validating that maternity is a major factor influencing these “critical” ELH traits. At last, the parental interaction explained 12.8% of the variation for fertilization success, 8.3% for embryonic survival, 4.5% for hatch success and 20.5% for larval deformities. Thus, we conclude that eggs of one female can develop more successfully when crossed with a compatible male, highlighting the importance of mate choice for successful propagation of high‐quality offspring. Together, this knowledge will improve early offspring performance, leading to future breeding programmes for this critically endangered and economically important species.  相似文献   

Nutritional analysis and microbiological evaluation of commercially available enteral diets for cats          下载免费PDF全文

Lori R. Prantil MPS  DVM  Jessica E. Markovich DVM  DACVIM  Cailin R. Heinze VMD  MS  DACVN  Deborah E. Linder DVM  DACVN  Todd R. Tams DVM  DACVIM  Lisa M. Freeman DVM  PhD  DACVN 《Journal of Veterinary Emergency and Critical Care》2016,26(2):254-261

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Evaluation of owner experiences and adherence to home‐cooked diet recipes for dogs          下载免费PDF全文

L. N. Johnson  D. E. Linder  C. R. Heinze  R. L. Kehs  L. M. Freeman 《The Journal of small animal practice》2016,57(1):23-27

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Time series diagnosis of tree hydraulic characteristics   总被引：1，自引：0，他引：1  

Phillips NG  Oren R  Licata J  Linder S 《Tree physiology》2004,24(8):879-890

An in vivo method for diagnosing hydraulic characteristics of branches and whole trees is described. The method imposes short-lived perturbations of transpiration and traces the propagation of the hydraulic response through trees. The water uptake response contains the integrated signature of hydraulic resistance and capacitance within trees. The method produces large signal to noise ratios for analysis, but does not cause damage or destruction to tree stems or branches. Based on results with two conifer tree species, we show that the method allows for the simple parameterization of bulk hydraulic resistance and capacitance of trees. Bulk tree parameterization of resistance and capacitance predicted the overall diel shape of water uptake, but did not predict the overshoot water uptake response in trees to shorter-term variations in transpiration, created by step changes in transpiration rate. Stomatal dynamics likely complicated the use of simple resistance-capacitance models of tree water transport on these short time scales. The results provide insight into dominant hydraulic and physiological factors controlling tree water flux on varying time scales, and allow for the practical assessment of necessary tree hydraulic model complexity in relation to the time step of soil- vegetation-atmosphere transport models.  相似文献   

Clinical,histopathological and immunohistochemical characterization of a novel equine ocular disorder: heterochromic iridocyclitis with secondary keratitis in adult horses          下载免费PDF全文

Nelson I. Pinto  Richard J. McMullen Jr.  Keith E. Linder  John M. Cullen  Brian C. Gilger 《Veterinary ophthalmology》2015,18(6):443-456

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Molecular biology. The life of RNA with proteins     

Linder P 《Science (New York, N.Y.)》2004,304(5671):694-695

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Determination of Heavy Metal Concentrations and Metal Fingerprints of Sewage Sludge from Eastern Cape Province,South Africa by Inductively Coupled Plasma – Mass Spectrometry (ICP-MS) and Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS)     

Morrison  G.  Fatoki  O. S.  Linder  S.  Lundehn  C. 《Water, air, and soil pollution》2004,152(1-4):111-127

Sewage sludge from Schornville, Zwelitsha and Dimbaza Sewage Treatment Plants (STPs) in the Eastern Cape province, South Africa were analyzed for the heavy metal contents by inductively coupled plasma-mass spectrometry (ICP) while metal fingerprints of the sludge were determined by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). Levels of Cd ranged from 1.1 mg kg^-1 at Zwelitsha STP to1.9 mg kg^-1 at Shornville STP while the levels of Zn varied between 1600 mg kg^-1 also at Zwelitsha STP and 4100 mg kg^-1 at Dimbaza STP. The levelsof Ni also ranged from 37 mg kg^-1 again at Zwelitsha STP to 86 mg kg^-1 at Dimbaza STP while the levels of Cr varied between 70 mg kg^-1 at Zwelitsha STP) and 120 mg kg^-1 at Dimbaza STP). The levels of Cu varied between 245 mg kg^-1 at Zwelitsha STP and 441 mg kg^-1 at Dimbaza STP while the levels of Pb ranged from 69 mg kg^-1 at Zwelitsha STP and 365 mg kg^-1 at Dimbaza STP. The fingerprint studies showed that metals like Si, K, Cu, Pt, Ni and Ag probably havenatural bedrock sources from the study area while others like Zn, Pb and Cd may have anthropogenic sources in addition to natural sources. Generally, sludge from Zwelitsha STP has the lowest concentration of heavy metals and has the greatest potential for agricultural use whilesludge from Dimbaza STP has the highest concentration of heavy metals with the least potential for agricultural use.  相似文献   

Estimates of denitrification in soil by remote sensing of thermal infrared emission at different moisture levels     

Kerstin Robertson  Leif Klemedtsson  Sune Axelsson  Thomas Rosswall 《Biology and Fertility of Soils》1993,16(3):193-197

Remote sensing techniques may be one way to narrow the range of uncertainty in extrapolating N₂ emissions from small-scale to large-scale terrestrial ecosystems. In the present work we investigated the correlations between denitrification activity, soil moisture, and soil thermal infrared emissions. A field experiment was performed on two different agricultural soils, one loam and one silty clay. The results indicated that thermal infrared emissions can only be used to estimate the denitrification rate in soil within a limited range of soil moisture levels. Estimates of denitrification activity based on soil texture and moisture are, however, very likely to be a fruitful approach to generating large-scale N fluxes.  相似文献   

Wasting coagulopathy in classic fowl plague. A study of the pathogenesis of hemorrhage in virus infections     

C Gagel  M Linder  G Müller-Berghaus  H G Lasch 《Zentralblatt für Veterin?rmedizin. Reihe B. Journal of veterinary medicine. Series B》1970,17(3):410-417

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Pathology in practice     

BJ Stevens  KE Linder 《Journal of the American Veterinary Medical Association》2012,241(5):567-569

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