Ecology and Control of Invasive Reptiles in Florida Active
This project involves development of tools for the detection and control of invasive reptiles in Florida, with an emphasis on pythons and tegu lizards. The goals are to reduce the risk of reptile invasions, investigate early detection methods, maintain rapid response capacity, and understand invasive reptile population biology and ecology to inform management options.
Florida’s Greater Everglades Ecosystem encompass vast subtropical habitats within and around Everglades National Park, which is the only place in the United States designated as a World Heritage Site, an International Biosphere Reserve, and a Wetland of International Significance. Billions of dollars have been committed to the long-term restoration of this ecosystem, but burgeoning populations of introduced and invasive reptiles threaten prospects for restoration.
USGS FORT Invasive Species Scientists are conducting research on a range of detection and control tools for invasive reptiles in Florida, including environmental DNA sampling methods for terrestrial systems, reproductive research to identify critical biological vulnerabilities, and vital rate fieldwork. Scientists are also conducting basic ecological research to better understand impacts of these invasive predators and inform development of control tools.
Python Problem
The invasive Burmese python (Python bivittatus) is established across South Florida and is implicated in the negative impacts of myriad native fauna. It is the most widely known of these invaders, and this giant snake appears to have contributed to drastic declines among several species of midsized mammals in the Everglades. For more than a decade, scientists and managers have investigated python ecology in the area to understand its habits and develop targeted removal and control tools. However, due to their incredible crypsis, pythons have proven extremely difficult to assess, and no tractable abundance estimates have yet been made.
Troublesome Tegus
Black and white tegus (Salvator merianae; tegu) are large terrestrial lizards from South America that are newly established in Everglades National Park, presenting a significant conservation issue. Tegus are dietary generalists with a predilection for eating eggs of ground-nesting animals, putting several threatened or endangered species and species that are indicators for Everglades Restoration at risk (for example, American crocodiles, black rails, and American alligators) within the Greater Everglades Ecosystem.
Below are other science projects associated with this project.
Below are publications associated with this project.
Snakes in the wrong places: Gordon Rodda’s career in invasive species research
Cold-induced mortality of invasive Burmese pythons in south Florida
A field test of attractant traps for invasive Burmese pythons (Python molurus bivittatus) in southern Florida
Python sebae (Northern African Python or African Rock Python)
Burmese Pythons and other giant constrictors
Boa constrictor (Boa constrictor): foraging behavior
Challenges in identifying sites climatically matched to the native ranges of animal invaders
Background: Species distribution models are often used to characterize a species' native range climate, so as to identify sites elsewhere in the world that may be climatically similar and therefore at risk of invasion by the species. This endeavor provoked intense public controversy over recent attempts to model areas at risk of invasion by the Indian Python (Python molurus). We evaluated a number
Is the Northern African Python (Python sebae) Established in Southern Florida?
Giant Constrictors: Biological and Management Profiles and an Establishment Risk Assessment for Nine Large Species of Pythons, Anacondas, and the Boa Constrictor
What parts of the US mainland are climatically suitable for invasive alien pythons spreading from Everglades National Park?
Below are partners associated with this project.
- Overview
This project involves development of tools for the detection and control of invasive reptiles in Florida, with an emphasis on pythons and tegu lizards. The goals are to reduce the risk of reptile invasions, investigate early detection methods, maintain rapid response capacity, and understand invasive reptile population biology and ecology to inform management options.
Florida’s Greater Everglades Ecosystem encompass vast subtropical habitats within and around Everglades National Park, which is the only place in the United States designated as a World Heritage Site, an International Biosphere Reserve, and a Wetland of International Significance. Billions of dollars have been committed to the long-term restoration of this ecosystem, but burgeoning populations of introduced and invasive reptiles threaten prospects for restoration.
USGS FORT Invasive Species Scientists are conducting research on a range of detection and control tools for invasive reptiles in Florida, including environmental DNA sampling methods for terrestrial systems, reproductive research to identify critical biological vulnerabilities, and vital rate fieldwork. Scientists are also conducting basic ecological research to better understand impacts of these invasive predators and inform development of control tools.
Python Problem
The invasive Burmese python (Python bivittatus) is established across South Florida and is implicated in the negative impacts of myriad native fauna. It is the most widely known of these invaders, and this giant snake appears to have contributed to drastic declines among several species of midsized mammals in the Everglades. For more than a decade, scientists and managers have investigated python ecology in the area to understand its habits and develop targeted removal and control tools. However, due to their incredible crypsis, pythons have proven extremely difficult to assess, and no tractable abundance estimates have yet been made.
Troublesome Tegus
Black and white tegus (Salvator merianae; tegu) are large terrestrial lizards from South America that are newly established in Everglades National Park, presenting a significant conservation issue. Tegus are dietary generalists with a predilection for eating eggs of ground-nesting animals, putting several threatened or endangered species and species that are indicators for Everglades Restoration at risk (for example, American crocodiles, black rails, and American alligators) within the Greater Everglades Ecosystem. - Science
Below are other science projects associated with this project.
- Publications
Below are publications associated with this project.
Filter Total Items: 22Snakes in the wrong places: Gordon Rodda’s career in invasive species research
When USGS research zoologist Gordon G. Rodda was a graduate student at Cornell University studying behavioral biology of alligators —or later, completing a post-doc at the Smithsonian Institute studying the social behavior of green iguanas in Venezuela or following that, as a statistics and sociobiology instructor at the University of Tennessee—he did not foresee that his professional future was iAuthorsJim WilsonCold-induced mortality of invasive Burmese pythons in south Florida
A recent record cold spell in southern Florida (2–11 January 2010) provided an opportunity to evaluate responses of an established population of Burmese pythons (Python molurus bivittatus) to a prolonged period of unusually cold weather. We observed behavior, characterized thermal biology, determined fate of radio-telemetered (n = 10) and non-telemetered (n = 104) Burmese pythons, and analyzed habAuthorsFrank J. Mazzotti, Michael S. Cherkiss, Kristen M. Hart, Ray W. Snow, Michael R. Rochford, Michael E. Dorcas, Robert N. ReedA field test of attractant traps for invasive Burmese pythons (Python molurus bivittatus) in southern Florida
Context: Invasive Burmese pythons (Python molurus bivittatus) are established over thousands of square kilometres of southern Florida, USA, and consume a wide range of native vertebrates. Few tools are available to control the python population, and none of the available tools have been validated in the field to assess capture success as a proportion of pythons available to be captured. Aims: OurAuthorsRobert N. Reed, Kristen M. Hart, Gordon H. Rodda, Frank J. Mazzotti, Ray W. Snow, Michael Cherkiss, Rondald Rozar, Scott GoetzPython sebae (Northern African Python or African Rock Python)
No abstract available.AuthorsR.N. Reed, D. Giardina, T. Pernas, D. Hazelton, J.G. Dozier, J. Prieto, R.W. Snow, K.L. KryskoBurmese Pythons and other giant constrictors
No abstract available.AuthorsRobert N. Reed, Gordon H. RoddaBoa constrictor (Boa constrictor): foraging behavior
Boa constrictor is often referred to as a sit-and-wait or ambush forager that chooses locations to maximize the likelihood of prey encounters (Greene 1983. In Janzen [ed.], Costa Rica Natural History, pp. 380-382. Univ. Chicago Press, Illinois). However, as more is learned about the natural history of snakes in general, the dichotomy between active versus ambush foraging is becoming blurred. HereiAuthorsG.G. Sorrell, M.S. Boback, R.N. Reed, S. Green, Chad E. Montgomery, L.S. DeSouza, M. ChiaraviglioChallenges in identifying sites climatically matched to the native ranges of animal invaders
Background: Species distribution models are often used to characterize a species' native range climate, so as to identify sites elsewhere in the world that may be climatically similar and therefore at risk of invasion by the species. This endeavor provoked intense public controversy over recent attempts to model areas at risk of invasion by the Indian Python (Python molurus). We evaluated a number
AuthorsG.H. Rodda, C. S. Jarnevich, R.N. ReedIs the Northern African Python (Python sebae) Established in Southern Florida?
No abstract available.AuthorsR.N. Reed, K.L. Krysko, S. Snow, G.H. RoddaGiant Constrictors: Biological and Management Profiles and an Establishment Risk Assessment for Nine Large Species of Pythons, Anacondas, and the Boa Constrictor
Giant Constrictors: Biological and Management Profiles and an Establishment Risk Assessment for Nine Large Species of Pythons, Anacondas, and the Boa Constrictor, estimates the ecological risks associated with colonization of the United States by nine large constrictors. The nine include the world's four largest snake species (Green Anaconda, Eunectes murinus; Indian or Burmese Python, Python moluAuthorsRobert N. Reed, Gordon H. RoddaWhat parts of the US mainland are climatically suitable for invasive alien pythons spreading from Everglades National Park?
The Burmese Python (Python molurus bivittatus) is now well established in southern Florida and spreading northward. The factors likely to limit this spread are unknown, but presumably include climate or are correlated with climate. We compiled monthly rainfall and temperature statistics from 149 stations located near the edge of the python's native range in Asia (Pakistan east to China and south tAuthorsG.H. Rodda, C. S. Jarnevich, R.N. Reed - Partners
Below are partners associated with this project.