Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Delaware”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,153 records · Page 64Linked to original sources
PubMed1999

In vivo dynamics of the microparasite Perkinsus marinus during progression and regression of infections in eastern oysters.

We used a total body parasite burden assay for the oyster pathogen Perkinsus marinus to investigate quantitative changes in microparasite burdens and frequency distributions. Heretofore, this type of study was limited mainly to macroparasites. The apparent in vivo growth pattern of P. marinus was characterized by a "lag" phase (< 10 cells/g wet weight [g wwt], a "log" phase (10-10,000 cells/g wwt), and a "stationary" phase (> 10,000 cells/g wwt). Infections declined exponentially under conditions unfavorable to the parasite but with a lengthening half-life, suggesting that elimination of parasites became increasingly difficult at low densities. Oysters held for 11 wk at 15 C, a temperature considered more favorable for oyster hemocytes than for P. marinus, were not able to eliminate infections. Parasite distributions within host populations were aggregated; in each sample, 1 or 2 oysters contained more parasites than all other oysters in the sample combined and the variance-to-mean ratio exceeded 1:1. The few hosts with large parasite burdens may be the most important individuals for survival and transmission of parasites. They are likely to play a key role in initiating and maintaining epizootics either in situ or after introduction of infected animals into a naive population.

Animals↗
PubMed1980

Who buys for your lab?

Explore the source record for details and available documents.

Centralized Hospital Services↗