Tag Archives: Caenorhabditis elegans

Räuberischer Schlund

predatorypressreleaseMuch to my amusement, I found out that the local newspaper, the Schwäbisches Tagblatt, picked up on our press release and published a nice little story. The title “Räubuerischer Schlund” translates to “Predatory Mouth”, referring to  the toothy mouth Pristionchus pacificus uses to puncture its prey. Pretty cool! The image on this post is the same one used in the press release, and shows P. pacificus chomping down on C. elegans. Click HERE for a link to the article. It’s in German, so if you need to you can have a look at it in google translate.

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Pristionchus pacificus predatory feeding video

One of the things that interests me about the nematode Pristionchus pacificus is that it is capable of taking advantage of many different food sources. Like it’s cousin and well known model organism Caenorhabditis elegans, this nematode can be raised on agar plates seeded with bacteria. Pristionchus can additionally feed on other sources, including other nematodes! These predatory feeding behaviors are quite distinct from bacterial feeding. For instance, Pristionchus has tooth-like denticles in its mouth opening that are highly active during predatory but not bacterial feeding. This increase in the complexity of the P. pacificus
behavioral palette is most interesting when you consider that the nervous systems are composed of a nearly identical set of neurons. So how do you teach an old nervous system to do new tricks? This is one of my primary motivations for comparing networks of synaptic connectivity between these two species.