Interspecific Interactions Between Two Species of Invasive Lizards in an Urban Environment; Camila Rodriguez-Barbosa and Steve Johnson
An extensive body of work has addressed the eco-evolutionary impacts of the Northern Curly-tailed Lizard (Leiocephalus carinatus) on Brown Anoles (Anolis sagrei) (much of it receiving coverage right here, here, and here on Anole Annals!). These species co-occur not only on many Caribbean islands where much of this research has taken place, but also within the urban matrix of southern Florida, where both species are introduced.
Camila Rodriguez-Barbosa and Steve Johnson investigated the impacts of curlies on brown anoles in shopping centers in southern Florida where both species were plentiful. Camila first collected baseline data on anole and curly populations at eight sites before embarking on a quest to eliminate curlies from four of her sites. Over the next four months, she removed over 300 (!) curlies from these sites, many of which had brown anole remains in their stomachs.
She found that this removal had serious consequences for brown anoles. Compared to anoles from shopping centers where curlies were unchanged, A. sagrei at removal sites experienced higher survival and consequently greater abundances. These anoles also shifted to lower perches once curlies were removed, mirroring results from previous work which show that the introduction of curlies leads to brown anoles occupying higher perches to escape this dangerous predator. Camila’s work suggests that brown anole/curly-tailed lizard interactions may be similar even in very different habitats and provides a fascinating look at lizard life (and death) in the urban sprawl of southern Florida.
Clyde Alford
this is a surprise to know that one species well eat other , are they the same size or is there a difference in size ? thank You for your info.
Camila Rodriguez
Hello Clyde. Curly-tailed lizards are larger than Brown Anoles. An adult male Brown Anole could reach a maximum SVL of ~69 mm. A male Curly-tailed Lizard could reach a ~130mm SVL.
Cheers!
bolko
Are they introduced only in urban environments, or can they be found in the wild as well?
Kevin Tarquin
Hello. The Curly tails are destroying dozens of chrysalis on my butterfly garden. How can I eradicate this invasive predator?
Susan Lerner
How were they removed? They are decimating butterfly populations in the native garden I manage.