Publications

monitoring the prevalence of the parasitic dinoflagellate hematodinium sp. in snow crabs chionoecetes opilio from conception bay, newfoundland.	bitter crab disease (bcd) of snow crabs chionoecetes opilio is caused by a parasitic dinoflagellate, hematodinium sp. in newfoundland's commercial fishery, infected snow crabs are identified using visual, macroscopic signs of disease for separation prior to processing. we estimated the sensitivity and specificity of gross, macroscopic diagnosis of hematodinium sp. by comparing these results with microscopic examination of prepared hemolymph smears. the sensitivity of a diagnostic test is the pro ...	2003	12608571
prevalence of crab asthma in crab plant workers in newfoundland and labrador.	the aim of the study was to determine the prevalence of snow crab sensitisation and occupational asthma.	2004	15736679
predation regulation of sedimentary faunal structure: potential effects of a fishery-induced switch in predators in a newfoundland sub-arctic fjord.	the collapse of the cod fishery in newfoundland has coincided with marked increases in abundances of snow crab, pandalid shrimp, and other crustaceans that prey on sedimentary infauna. a 3-year sampling program in bonne bay, newfoundland indicates differences in composition and number of these predators in the two main arms of the fjord that coincide with strong differences in benthic community structure. to test whether predation pressure contributes to the observed patterns in sedimentary faun ...	2005	15791429
epidemiology of bitter crab disease (hematodinium sp.) in snow crabs chionoecetes opilio from newfoundland, canada.	the parasitic dinoflagellate hematodinium sp. causes a condition known as bitter crab disease (bcd) in snow crabs chionoecetes opilio and tanner crabs c. bairdi. as the name of the condition implies, crabs infected with bcd are unmarketable due to their bitter flavor. we surveyed the distribution of bcd in 3 regions within the snow crab fishery of newfoundland from 1997 to 2003. over time, the disease has become firmly established in conception and bonavista bays and persists at low levels on th ...	2005	15997824
gender and snow crab occupational asthma in newfoundland and labrador, canada.	fish and shellfish processing employs many thousands of people globally, with shellfish processing becoming more important in recent years. shellfish processing is associated with multiple occupational health and safety (ohs) risks. snow crab occupational asthma (oa) is work-related asthma associated with processing snow crab. we present a gender analysis of findings from a 3-year multifaceted study of snow crab oa in newfoundland and labrador, canada. the study was carried out in four snow crab ...	2006	16109398
pathology of hematodinium infections in snow crabs (chionoecetes opilio) from newfoundland, canada.	bitter crab disease (bcd) of snow crabs, chionoecetes opilio, is caused by a parasitic dinoflagellate, hematodinium sp. the disease has shown an alarming increase in prevalence in the commercial fishery in eastern and northeastern areas of newfoundland and labrador since it was first recorded there in the early 1990s. we documented histopathological alterations to the tissues in snow crabs with heavy infections of hematodinium sp. and during sporulation of the parasite. pressure necrosis was evi ...	2007	17336326
conservation in the first internal transcribed spacer region (its1) in hematodinium species infecting crustacean hosts found in the uk and newfoundland.	parasitic dinoflagellates in the genus hematodinium infect a number of decapod crustaceans in waters off the uk, including the norway lobster nephrops norvegicus and the edible crab cancer pagurus. this study investigated sequence variability in the first internal transcribed spacer (its1) region of the ribosomal rna complex of hematodinium spp. infecting n. norvegicus, c. pagurus, and pagurus bernhardus from 4 locations in the uk and from the hematodinium sp. infecting chionoecetes opilio from ...	2007	17629120
epidemiological determinants in outbreaks of bitter crab disease (hematodinium sp.) in snow crabs chionoecetes opilio from conception bay, newfoundland, canada.	bitter crab disease (bcd) is caused by hematodinium sp., an endoparasitic dinoflagellate. it lives within the hemocoeloms of snow crabs chionoecetes opilio and tanner crabs c. bairdi, making them unmarketable due to their bitter flavor. two recent outbreaks of bcd have occurred in conception bay, newfoundland, one from 1999 to 2000 and another from 2003 to 2005. in the earlier outbreak, prevalence was highest in juvenile and primiparous females and juvenile males. it was thought to be highest in ...	2007	17933398
occupational asthma and allergy in snow crab processing in newfoundland and labrador.	risk factors and prevalence of occupational asthma (oa) and occupational allergy (oal) in the snow crab-processing industry have been poorly studied.	2010	19736174