The global importance of ticks Tập 129 Số S1 - Trang S3-S14 - 2004
Frans Jongejan, Gerrit Uilenberg
Ticks and tick-borne diseases affect animal and human health worldwide and are the cause of significant economic losses. Approximately 10% of the currently known 867 tick species act as vectors of a broad range of pathogens of domestic animals and humans and are also responsible for damage directly due to their feeding behaviour. The most important tick species and the effects they cause a...... hiện toàn bộ Cryptosporidiumspecies in humans and animals: current understanding and research needs Tập 141 Số 13 - Trang 1667-1685 - 2014
Una Ryan, Ronald Fayer, Lihua Xiao
SUMMARYCryptosporidiumis increasingly recognized as one of the major causes of moderate to severe diarrhoea in developing countries. With treatment options limited, control relies on knowledge of the biology and transmission of the members of the genus responsible for disease. Currently, 26 species are recognized as valid on the basis of ...... hiện toàn bộ Host life-history variation in response to parasitism Tập 90 Số 1 - Trang 205-216 - 1985
Dennis J. Minchella
Over half of all living species of plants and animals are parasitic, which by definition involves intimate association with and unfavourable impact on hosts (Price, 1980). This paper will only consider parasites whose ‘unfavourable impact’ adversely affects the birth and/or mortality rates of their hosts (Anderson, 1978). Most organisms are potential hosts and must deal with the problem of...... hiện toàn bộ Patterns of macroparasite aggregation in wildlife host populations Tập 117 Số 6 - Trang 597-610 - 1998
Darren J. Shaw, Bryan T. Grenfell, ANDREW DOBSON
Frequency distributions from 49 published wildlife host–macroparasite
systems were analysed by maximum likelihood for
goodness of fit to the negative binomial distribution. In 45 of the 49
(90%) data-sets, the negative binomial distribution
provided a statistically satisfactory fit. In the other 4 data-sets the
negative binomial distribution still provided a better
fit than the Poiss...... hiện toàn bộ Analysis of aggregation, a worked example: numbers of ticks on red grouse chicks Tập 122 Số 5 - Trang 563-569 - 2001
David A. Elston, Robert L. Moss, Thierry Boulinier, Colin Arrowsmith, Xavier Lambin
The statistical aggregation of parasites among hosts is often described empirically by the negative binomial (Poisson-gamma) distribution. Alternatively, the Poisson-lognormal model can be used. This has the advantage that it can be fitted as a generalized linear mixed model, thereby quantifying the sources of aggregation in terms of both fixed and random effects. We give a worked example,...... hiện toàn bộ