B. L. James

Bio: B. L. James is an academic researcher. The author has an hindex of 1, co-authored 1 publications receiving 37 citations.

Lipid fractions in adult Schistosoma mansoni.

Abstract: Total lipid from adult male and adult paired Schistosoma mansoni has been fractionated by thin-layer chromatography. Phospholipid, free sterol, and triglyceride were major components of both mixtures. A remarkably small amount of sterol ester was found in adult flukes considering the prevalence of this compound in mouse blood. Free fatty acids were found to be a minor component. Cholesterol was the major free sterol present.The technical assistance of Mrs Katye Ross Summerlin is gratefully acknowledged.

How nepotistic is the brain worm

Abstract: The evolution of altruism does not necessarily require an extreme amount of kinship. This point is illustrated with an analysis of altruistic behavior in the Trematode parasite Dicrocoelium dendriticum, which apparently can evolve even when the parasites of the host are derived from as many as five different parents.

A review of the infectious agents, parasites, pathogens and commensals of European cockles ( Cerastoderma edule and C. glaucum )

Abstract: A systematic review of the parasites, pathogens and commensals of the edible cockle (Cerastoderma edule) and of the lagoon cockle (Cerastoderma glaucum) has been completed. A total of 59 different conditions have been reported throughout the range of both of these hosts; of these 50 have been reported in edible cockles, and 28 in lagoon cockles. Cockles are hosts to viruses, bacteria, fungi (including Microsporidia), Apicomplexa, Amoeba, Ciliophora, Perkinsozoa, Haplosporidia, Cercozoa, Turbellaria, Digenea, Cestoda, Nematoda, Crustacea and Nemertea. A number of these have been reported sporadically although they may be associated with mortalities. In particular, mortalities have been associated predominately with digeneans and some protistan infections. In many cases pathology is marked in affected animals and parasites have been shown to reduce fecundity, alter burrowing behaviour and limit growth. This review provides information on the individual and population effects of these conditions as well as providing suggestions for future research. In particular, there has been a lack of taxonomic rigour applied to many studies and as a result there are a number of erroneous host records. There is a need to re-describe a number of parasite species and to determine the life cycle of those considered to be important mortality drivers.

Cercaria bucephalopsis haimeana (Lacaze-Duthiers, 1854) (Digenea: Bucephalidae) in the cockle, Cardium edule L. in South Wales

Abstract: Summary Some variations in the percentage infection of the cockle, Cardium edule L., on Llanrhidian sands, South Wales with Cercaria bucephalopsis haimeana (Lacaze-Duthiers, 1854) are described. Vertical variations in percentage infection are related to the population density of the final hosts and the seasonal variation with the breeding cycle of the first intermediate host. Only spent adult cockles, over 18·0 mm long and one year old, are infected, the highest percentage infection occurring in three-year old cockles. A decline in the percentage infection in older cockles suggests an increase in the mortality of infected specimens together with an increase in resistance to infection with age. Medium-sized cockles have a higher percentage infection than smaller and larger cockles of the same age. The parasite causes a decrease in the host's shell growth rate but an improvement in the flesh yield. The possible reasons for the variations in percentage infection and the effect of the parasite on the host are...