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The diversity of reproductive parasites among arthropods: Wolbachia do not walk alone
This extensive survey demonstrates that at least a third of arthropod species are infected by a diverse assemblage of maternally inherited bacteria that are likely to strongly influence their hosts' biology, and indicates an urgent need to establish the nature of the interaction between non-Wolbachia bacteria and their hosts. Expand
The status of Dugesia lugubris and D. polychroa (Turbellaria, Tricladida) in Britain
Two types of triclad in the Dugesia lugubris species complex were identified on the basis of head shape and cannibalistic behaviour and showed to be distinct species, suggesting that the earlier confusion in the nomenclature of these two species was due to the failure to recognize that D. polychroa may exhibit a temporary nipple on the penial papilla. Expand
Behaviour in competition for food amongst lake-dwelling triclads
The behaviour of Polycelis nigra, P. tenuis (Ijima), Dugesia polychroa (Schmidt) and Dendrocoelum lacteum (Muller) in terms of their competition for food was studied in the laboratory and responses shown are considered to be integral to the competition forFood amongst these four species. Expand
Interspecific competition in lake-dwelling triclads
It was shown that while exocrene substances influenced the fecundity of triclad populations this was a minor factor compared with intraspecific competition for food. Expand