Tag Archives: Insects

Investigating animal decomposition in a tropical wet forest and agricultural lands

Michael, an undergraduate researcher out of Stanford, is working at Las Cruces on animal decomposition.  Briefly, he’s set out freshly-killed adult chickens and chicks in forests and agricultural lands (i.e., pasture and coffee plantation) and monitors what happens…

He’s got camera traps trained on the adult chickens, and uses transects through both habitat types to pair replicate locations with both major habitats.  It’s interesting (and rather smelly) work: there are a number of specialist scavengers that feed on animal matter, and the roles animal detritus (feces + dead animal) play in communities is often overlooked in light of the overwhelming biomass that plants input into detrital pools in ecosystems.  Michael has already found some exciting facilitation effects within the scavenger community.

Michael was kind enough to take me along on one of his sampling dates.

Eastern Cicada Killer

Amos and I discovered an Eastern Cicada Killer (Sphecius speciosus) female attempting to carry away her prey this weekend outside of my apartment in Savannah, GA.  Cicada Killers are solitary wasp parasitoids that sting prey, paralyzing it, and drag it to pre-made burrows, where they will lay an egg on the incapacitated prey item for their larvae’s consumption.  This seems absolutely terrifying, especially given that this wasp is a couple of inches long…

The wasp seemed to have taken a cicada that was a bit too large for it; it was struggling to carry it off, and eventually left the paralyzed cicada, possibly because of the dual harassment from my photographing and Amos’s barking.