Invertebrate Course 2022
History:This 2-year-old, male Madagascar hissing cockroach (Gromphadorhina portentosa) was found dead. There are 13 adult hissing cockroaches that reside in an exhibit enclosure. The exhibit measures 14"x7"x15". It is made of plastic and frosted on the back wall, black on the side walls, and clear on the front wall to allow guests to see in. The top panel of the exhibit is primarily metal screen. The substrate for the enclosure is 1" of cypress mulch which is spot cleaned daily and replaced as needed. When substrate is removed, it is frozen for 72 hours or more. There are 4 pieces of cork bark in the exhibit that allow the roaches to hide and utilize the vertical space. A 43-watt incandescent bulb illuminates the exhibit and provides warmth. The exhibit temperature is 78 degrees and humidity is 50%. The exhibit is lightly misted each morning to help with humidity. There is a naturalistic looking water bowl that contains small rocks and water. The rocks are utilized so the roaches do not fall in and drown. There is also a naturalistic food dish containing wheat bran and fish flakes. Daily, the roaches are also offered greens and vegetables. The produce is replaced the next day if not eaten in its entirety.
Gross Lesions:No gross lesions observed.