Parasitic zoonotic disease agents in human and animal drinking water     

Karanis P 《DTW. Deutsche tier?rztliche Wochenschrift》2000,107(8):311-315

Human- and veterinary important parasites of the subkingdom of protozoans and helminths infect humans and animals by ingestion of parasites in contaminated water. The parasites are excreted from the body of infected humans, livestock, zoo animals, companion animals or wild animals in the feces. Recreational waters, agricultural practices and wild animals serve as vehicles of transmission of the parasites in the water supplies. The following topics are addressed: a) the life cycles of parasitic diseases-causing agents with proven or potential transmission via water b) the development and the current research status of the analytical techniques for the detection of parasitic diseases-causing agents from water c) the occurrence of Cryptosporidium and Giardia in surface water supplies and in treated water d) the possible water sources and transmission ways of the parasites into the water supplies e) the behaviour and the possibilities for the removal or elimination of the parasites by water treatment.  相似文献   

Chronic pancreatitis in dogs: A retrospective study of clinical,clinicopathological, and histopathological findings in 61 cases     

Brier M. Bostrom  Panagiotis G. Xenoulis  Shelley J. Newman  Roy R. Pool  Geoffrey T. Fosgate  Jörg M. Steiner 《Veterinary journal (London, England : 1997)》2013,195(1):73-79

The objective of this study was to characterize the clinical, clinicopathological, and histopathological findings of dogs with chronic pancreatitis. The necropsy database at Texas A&M University was searched for reports of dogs with histological evidence of chronic pancreatitis defined as irreversible histologic changes of the pancreas (i.e. fibrosis or atrophy). A reference necropsy population of 100 randomly selected dogs was used for signalment and concurrent disease comparisons. Cases were categorized as clinical or incidental chronic pancreatitis based on the presence of vomiting, decreased appetite, or both vs. neither of these signs. All archived pancreas samples were scored histologically using a published scoring system.Sixty-one dogs with chronic pancreatitis were included. The most frequent clinical signs were lethargy, decreased appetite, vomiting, and diarrhea. Compared to the reference necropsy population, chronic pancreatitis cases were more likely to be older, neutered, of the non-sporting/toy breed group, and to have concurrent endocrine, hepatobiliary, or neurological disease. Clinical cases had significantly higher histological scores for pancreatic necrosis and peripancreatic fat necrosis, and were significantly more likely to have hepatobiliary or endocrine disease as well as increased liver enzyme activities, or elevated cholesterol and bilirubin concentrations. In conclusion, clinical disease resulting from chronic pancreatitis might be related to the presence of pancreatic necrosis and pancreatic fat necrosis. The signalment, presentation, and concurrent diseases of dogs with chronic pancreatitis are similar to those previously reported for dogs with acute pancreatitis.  相似文献   

Serum triglyceride and cholesterol concentrations and lipoprotein profiles in dogs with naturally occurring pancreatitis and healthy control dogs     

Panagiotis G. Xenoulis  Paul J. Cammarata  Rosemary L. Walzem  Jan S. Suchodolski  Jörg M. Steiner 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2020,34(2):644-652

  相似文献   

Investigating mechanisms associated with emamectin benzoate resistance in the tomato borer Tuta absoluta     

Stavrakaki  Marianna  Ilias  Aris  Ioannidis  Panagiotis  Vontas  John  Roditakis  Emmanouil 《Journal of pest science》2022,95(3):1163-1177

  相似文献   

Shape ontogeny and variation in the sharpsnout seabream, Diplodus puntazzo (Cetti 1777)     

Savoula Kouttouki  Eustathia Georgakopoulou  Panagiotis Kaspiris  Pascal Divanach  & Georgios Koumoundouros 《Aquaculture Research》2006,37(7):655-663

Shape ontogeny of Diplodus puntazzo was studied during the larval and metamorphosis phase (2.6–33.0 mm total length (TL)) by means of geometric morphometrics. Additionally, shape comparison was performed between newly settled wild individuals of D. puntazzo (11.0–18.0 mm TL) and reared of the same TL range. Results clearly demonstrated that shape ontogeny of D. puntazzo is not continuous during the studied period, but it is characterized by the presence of two inflection points (at 6.2 and 11.4 mm TL), which define three phases of significantly different rates of shape development (P<0.05). Spline diagrams demonstrated that shape ontogeny mainly correlated with the development of fins, caudal peduncle, snoot and the ventral abdominal profile. Concerning the comparison of reared fish with wild fish, morphometric analysis revealed a significant effect of fish origin on the shape of D. puntazzo (Wilks' λ=0.147, P<0.001). Shape differences between the two populations were mainly demonstrated at the caudal peduncle and at the ventral profile of the abdominal area. Combined with the results of shape ontogeny, spline diagrams showed that shape differences between the two populations were related to the comparatively more advanced ontogenetic state of reared fish, at the studied size range.  相似文献   

A Threshold Model for Heron Productivity     

Panagiotis Besbeas  Byron J. T. Morgan 《Journal of Agricultural, Biological & Environmental Statistics》2012,17(1):128-141

We demonstrate the potential of conditionally Gaussian state-space models in integrated population modeling, when certain model parameters may be functions of previous observations. The approach is applied to a heron census, and the data are best described by a model with three population-size thresholds which determine the population productivity. The model provides an explanation of how the population rebounds rapidly after major falls in size, which are characteristic of the data. By contrast, a simple logarithmic regression of productivity on population size was not significant. The results are of ecological interest, and suggest hypotheses for further investigation. Supplementary figures are available online.  相似文献   

Relative impact of nucleotide and copy number variation on gene expression phenotypes     

Stranger BE  Forrest MS  Dunning M  Ingle CE  Beazley C  Thorne N  Redon R  Bird CP  de Grassi A  Lee C  Tyler-Smith C  Carter N  Scherer SW  Tavaré S  Deloukas P  Hurles ME  Dermitzakis ET 《Science (New York, N.Y.)》2007,315(5813):848-853

  相似文献   

Insecticide resistance status of Myzus persicae (Hemiptera: Aphididae) populations from peach and tobacco in mainland Greece   总被引：1，自引：0，他引：1  

Margaritopoulos JT  Skouras PJ  Nikolaidou P  Manolikaki J  Maritsa K  Tsamandani K  Kanavaki OM  Bacandritsos N  Zarpas KD  Tsitsipis JA 《Pest management science》2007,63(8):821-829

The susceptibility of 88 and 38 field samples of Myzus persicae (Sulzer) to imidacloprid and deltamethrin respectively was examined using the FAO dip test bioassay. The field samples were collected from tobacco and peach from various regions of Greece in the period from 2004 to 2006. In addition, 497, 349 and 370 clones originating from peach and tobacco were screened for the three known resistance mechanisms, elevated esterases, modified acetylcholinesterase (MACE) and knockdown resistance (kdr) respectively, using biochemical and DNA diagnostics. Most of the samples assayed with imidacloprid showed low resistance factors (RFs)-39% below 5 and 21% between 5 and 10. However, 9% of the samples (all from tobacco) showed relatively high RF values (24-73). Differences were found between crops, with higher RF values recorded in samples from tobacco than in those from peach. Bioassays with deltamethrin revealed the development of strong resistance in the populations examined. The RFs were mostly higher than 23, and in 29% of the samples they were extremely high (152-436). Finally, the three known resistance mechanisms were found in high frequencies in the populations examined, although some differences between crops and years were detected. The implications of the study for management schemes against M. persicae are discussed.  相似文献   

Hydrolyzable tannins with the hexahydroxydiphenoyl unit and the m-depsidic link: HPLC-DAD-MS identification and model synthesis     

Arapitsas P  Menichetti S  Vincieri FF  Romani A 《Journal of agricultural and food chemistry》2007,55(1):48-55

This study was designed to develop efficient analytical tools for the difficult HPLC-DAD-MS identification of hydrolyzable tannins in natural tissue extracts. Throughout the study of the spectroscopic characteristics of properly synthesized stereodefined standards, it was observed that the UV-vis spectra of compounds with the m-depsidic link showed a characteristic shoulder at 300 nm, consistent with the simple glucogalloyl esters, whereas compounds with the hexahydroxydiphenoyl (HHDP) unit gave a diagnostic fragmentation pattern, caused by a spontaneous lactonization in the mass spectrometer. These observations were confirmed by HPLC-DAD-MS analyses of tannic acid and raspberry extracts, which are rich in hydrolyzable tannins with the m-depsidic link and the HHDP unit, respectively.  相似文献