منابع مشابه
Inbreeding and parasite sex ratios.
The breeding system of parasitic protozoa affects the evolution of drug resistance and virulence, and is relevant to disease diagnosis and the development of chemo- and immunotherapy. A major group of protozoan parasites, the phylum Apicomplexa, that includes the aetiological agents of malaria, toxoplasmosis and coccidiosis, all have dimorphic sexual stages. The sex ratio (proportion of males p...
متن کاملFactor affecting sex ratios of a mermithid parasite of mosquitoes.
The ratio of male to female Reesimermis nielseni Tsai and Grundmann, a nematode parasite of mosquito larvae, increased as the number of parasites per host increased. Hosts with a single nematode produced 9% males compared with essentially 100% males in hosts with more than 7 parasites; hosts with 3 nematodes produced about equal numbers of males and females. Males of R. nielseni generally emerg...
متن کاملSex ratios in the rodent malaria parasite, Plasmodium chabaudi.
The sex ratios of malaria and related Apicomplexan parasites play a major role in transmission success. Here, we address 2 fundamental issues in the sex ratios of the rodent malaria parasite, Plasmodium chabaudi. First we test the accuracy of empirical methods for estimating sex ratios in malaria parasites, and show that sex ratios made with standard thin smears may overestimate the proportion ...
متن کاملExtraordinary sex ratios. A sex-ratio theory for sex linkage and inbreeding has new implications in cytogenetics and entomology.
it thinks is in the best interests of the country, should approval be obtained from the Executive Branch before such a policy is announced? Some Board members object to the constraints of this sort of administrative discipline, and at least in the past have felt that prior approval of this type should not be required. It might be reasoned that the director-who is a presidential appointee, who i...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of London. Series B: Biological Sciences
سال: 2002
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rspb.2001.1938