Euhaplorchis prefers two areas of killifish brains

Ryan Hechingernews

In a new collaborative paper, we present the distribution of the brain-infecting host-behavior-modifying Euhaplorchis californiensis (Euha) parasite along the antero-posterior axis of California killifish brains. We find that, although Euha metacercariae cover the whole brain, they are really dense in two areas. The density peaks provide clues to the route of parasite entry into the brain and the neurological mechanisms … Read More

Horn snail trematode guide is finally here

Ryan Hechingernews

It took a while, but Ryan finally completed the guide to the trematodes infecting the California horn snail. Although these parasites have been subject to a large amount of taxonomic, biological, evolutionary, and ecological research–and we’ve even proposed to use them as ecological indicator tools–we’ve lacked a satisfactory guide. This should help fill the void for a while. It’s out … Read More

Scaling theory works for ectoparasites

Ryan Hechingernews

In a new lab publication, out today in Proceedings of the Royal Society–Biology, we report our finding that the Metabolic Theory of Ecology accurately predicts the specific increase in total ectoparasite load across birds of different sizes. We also found what appears to be a novel macroecological pattern–a shift in dominance from mites to lice moving from smaller to larger … Read More

Parasitism & sex allocation in hermaphroditic host

Ryan Hechingernews

In another paper from Cat’s PhD (congrats!) published in Scientific Reports, we document that when hermaphroditic Chthamalus fissus barnacles invest in female reproduction, it comes with greater risk of being infected by the ovary-eating isopod parasite Hemioniscus balani. In fact, this parasite may partly explain our surprising finding–which is contrary to standard theoretical expectations–that the largest barnacles were not investing … Read More

Lab hosts fall meeting of Southern California Society of Parasitologists

Ryan Hechingernews

Our lab hosted the Fall meeting for our regional parasitological society. We had a pretty good time sharing things about the lab with the “club”, including a presentation, facilities tour, and lab demos of miscellaneous parasites. See the blurb at ASP’s news site for more info.