Tuesday, June 8, 2010

Acetaminophen Toxic to Burmese Pythons and Nile Monitors

In the search to find a method to control large invasive reptiles Richard Mauldin and Peter Savarie of the United States Department of Agriculture tested acetaminophen as a potential poison to control the juveniles of alien Burmese Pythons and Nile Monitor Lizards. The pain killer was previously found to be toxic to Brown Treesnakes (Boiga irregularis) when it was administered orally. Does of 10, 20, and 40 mg resulted in mortality rates between 50 and 100%, while doses of 20, 40, and 80 mg resulted in mortality rates of 14.3, 85.7, and 100% respectively. The doses were administered by allowing the reptiles to swallow a dead neonatal mouse that contained a dose of acetaminophen. The implication is that feral reptiles could be attracted to bait that contained the toxin.

Citation: Mauldin, R. E. and P. J. Savarie. 2010. Acetaminophen as an oral toxicant for Nile monitor lizards (Varanus niloticus) and Burmese pythons (Python molurus bivittatus). Wildlife Research 37:215-222.

Saturday, June 5, 2010

Burmese Python Distribution in China Re-examined

Dave and Tracy Barker have published an updated summary of the distribution of bivittatus in China. They examine the distribution by province and analyze the known records for each. The most eastern record occurs at Naping in Fujian Province. It has also been recently reported from The Kimmen Archipelago on Queymoy Island. They found no records of the species in Guangxi, but note it is widely reported in the literature to be present. One record of a specimen from Jiangxi based on the literature appears to be based upon a visual sighting and a shed skin. P. bivittatus appears to be present in extreme southern Yunnan (on the Vietnam border) as well as extreme western Yunnan, avoiding the Shan Plateau. The authors consider the presence of bivittatus in Sichuan Province problematic. Both specimens were associated with urban areas and could represent human introduction.

Barker, D. G. and T. M. Barker. 2020. The distribution of the Burmese Python, Python bivittatus, in China. Bulletin of the Chicago Herpetological Society 45:86-88.