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101.
Mesoscale eddies and survival of late stage Pacific sardine (Sardinops sagax) larvae 总被引:1,自引:0,他引:1
We examined the distribution of sardine larvae relative to environmental conditions with the purpose of identifying and characterizing habitat that encourages high larval growth and survival, based on the 1983–1998 surveys of the California Cooperative Oceanic Fisheries Investigations (CalCOFI). Long-term averages show that sardine 'survivors' (spatially aggregated larvae ≥ 18 days old) were most abundant offshore, whereas sardine egg density, chlorophyll biomass and zooplankton volume were greatest inshore. In contrast, mesoscale eddies, observed in remotely sensed sea surface temperature imagery, were found only in offshore regions. To further examine the link between eddies – which often result in locally elevated chlorophyll and zooplankton – and sardine survival, we compared the distribution of larvae and eddies survey by survey. Sardine survivors were most abundant offshore in only one-quarter of the research surveys, and when they were most abundant offshore they were associated with eddies. This indicates that the offshore eddy habitat produced exceptionally large numbers of survivors, as evidenced by the disproportionate effect on the long-term average. 相似文献
102.
Cameon M. Ohmes Elizabeth G. Davis Laurie A. Beard Karie A. Vander Werf Alex W. Bianco Urs Giger 《The Canadian veterinary journal. La revue veterinaire canadienne》2014,55(2):147-151
Two Quarter horses with weight loss had glucosuria, euglycemia, and a mild metabolic acidosis suggesting a proximal renal tubular defect. Further testing revealed transient generalized aminoaciduria, lactic aciduria, and glucosuria, indicating Fanconi syndrome. Both horses recovered with supportive therapy. This is the first report of acquired Fanconi syndrome in horses. 相似文献
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105.
Miguel Salgado Gustavo Monti Iker Sevilla Elizabeth Manning 《Tropical animal health and production》2014,46(7):1313-1316
Paratuberculosis has long been considered a disease of domestic and wild ruminants only. The known host range of Mycobacterium avium subsp. paratuberculosis (MAP) was recently extended to include non-ruminant wildlife species believed to be exposed to spillover of MAP from infected domestic cattle herds. The aim of the present study was to assess the association between cattle herd MAP infection pressure level and the infection level of a hare population in two dairy farms of southern Chile. Fifty hares from a herd A and 42 hares from herd B were captured and sampled for MAP culture. The results showed a statistically significant association between the cattle herds’ infection prevalence and the hare infection prevalence. 相似文献
106.
Rebecca Cohen REGAN Robert Michael GOGAL Jr James Perry BARBER Richard Cary TUCKFIELD Elizabeth Wynne HOWERTH Jessica Ann LAWRENCE 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2014,76(12):1563-1568
Loperamide is a peripheral
opiate agonist that can cause apoptosis and G2/M arrest in human cancer cell lines and may
sensitize cells to chemotherapy. The objectives of this study were to investigate the
effects of loperamide on viability, apoptosis and cell cycle kinetics in canine cancer
cells and to establish whether the drug sensitizes cells to doxorubicin. Cell viability
was assessed using Alamar Blue. Cell death and cell cycle were studied using flow
cytometry with 7-Aminoactinomycin-D (7-AAD) and propidium iodide (PI), respectively.
Loperamide decreased cell viability in a dose-dependent fashion and was most effective
against canine osteosarcoma cells. In all cell lines, it induced a dose and time dependent
apoptosis and resulted in accumulation in G0/G1. When co-incubated with doxorubicin,
loperamide induced a synergistic cell kill in canine carcinoma cells. Investigation is
warranted into the role of loperamide in the treatment of canine cancer. 相似文献
107.
108.
Elizabeth H. Yorke Carter E. Judy Travis C. Saveraid Conor P. McGowan Fred J. Caldwell 《Veterinary radiology & ultrasound》2014,55(1):35-44
Distal border fragments of the navicular bone are increasingly being detected due to the improved capabilities of magnetic resonance imaging (MRI), but their clinical significance remains unclear. The purpose of this retrospective study was to describe the location, size, and frequency of fragments in a cohort of horses presented for MRI of the foot and to compare MRI findings with severity of lameness. Archived MRI studies and medical records were searched from March 2006 to June 2008. Horses were included if a distal border fragment of the navicular bone was visible in MRI scans. Confidence interval comparisons and linear regression analyses were used to test hypotheses that fragments were associated with lameness and lameness severity was positively correlated with fragment volume and biaxial location. A total of 453 horses (874 limbs) were included. Fragments were identified in 60 horses (13.25%) and 90 limbs (10.3%). Fifty percent of the horses had unilateral fragments and 50% had bilateral fragments. Fragments were located at the lateral (62.2%), medial (8.89%), or medial and lateral (28.9%) angles of the distal border of the navicular bone. There was no increased probability of being categorized as lame if a fragment was present. There was no significant difference in fragment volume across lameness severity categorizations. Confidence intervals indicated a slightly increased probability of being classified as lame if both medial and lateral fragments were present. Findings indicated that distal border fragments of the navicular bone in equine MRI studies are unlikely to be related to existing lameness. 相似文献
109.
Chelsea M. Kunst Anthony P. Pease Nathan C. Nelson Greg Habing Elizabeth A. Ballegeer 《Veterinary radiology & ultrasound》2014,55(5):511-520
Elbow dysplasia is a heritable disease that is a common cause of lameness and progressive elbow osteoarthritis in young large breed dogs. The Orthopedic Foundation for Animals (OFA) screens elbow radiographs, and assigns grades 0–3 based on presence and severity of bony proliferation on the anconeal process. Grade 1 is assigned when less than 3 mm is present and considered positive for dysplasia. We investigated the incidence of elbow dysplasia and progression of osteoarthritis in elbows with grades 0 and 1 in 46 elbows screened at least 1 year previously, using CT as a gold standard and with the addition of CT absorptiometry. The incidence of dysplasia based on CT was 62% in grade 0, and 75% in grade 1 elbows, all of which had medial coronoid disease. Progressive osteoarthritis at recheck was consistent with elbow dysplasia. The sensitivity and specificity of the OFA grade for elbow dysplasia compared to CT findings was 75% and 38%, respectively. Increased bone mineral density of the medial coronoid process as characterized by osteoabsorptiometry warrants further investigation with respect to elbow dysplasia. Proliferation on the anconeal process without CT evidence of dysplasia or osteoarthritis was present in 20% of the elbows, and is theorized to be an anatomic variant or enthesopathy of the olecranon ligament/synovium. Results of our study suggest that the “anconeal bump” used for elbow screening by the OFA is a relatively insensitive characteristic, and support the use of CT for identifying additional characteristics of elbow dysplasia. 相似文献
110.