Parasites and global warming: Net effects of temperature on an intertidal host-parasite system

  • Studer A
  • Thieltges D
  • Poulin R
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Climate changes, particularly global warming, are likely to impact host–parasite inter- actions. However, our understanding of the effects of environmental factors on marine host–parasite systems is limited. We conducted a series of laboratory experiments on the effects of temperature on all transmission steps of the intertidal trematode Maritrema novaezealandensis from its first interme- diate snail host Zeacumantus subcarinatus to the second intermediate amphipod host Paracalliope novizealandiae. By measuring output of cercarial transmission stages from snails, cercarial survival and infectivity, susceptibility of amphipods to infections, amphipod survival and parasite develop- ment within amphipods, we evaluated overall net temperature effects. At low temperatures (

Author-supplied keywords

  • Amphipoda
  • Climate change
  • Experimental infections
  • Parasitism
  • Transmission
  • Trematoda

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  • A. Studer

  • D. W. Thieltges

  • R. Poulin

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