Gordon H Rodda (Former Employee)
Science and Products
Filter Total Items: 67
A state-of-the-art trap for the brown treesnake A state-of-the-art trap for the brown treesnake
No abstract available.
Authors
G.H. Rodda, T. H. Fritts, C.S. Clark, S.W. Gotte, D. Chiszar
The lizard fauna of Guam's fringing islets: Island biogeography, phylogenetic history, and conservation implications The lizard fauna of Guam's fringing islets: Island biogeography, phylogenetic history, and conservation implications
We sampled the lizard fauna of twenty-two small islets fringing the Pacific island of Guam and used these data to shed light on the processes responsible for present-day diversity. Habitat diversity, measured by islet area and vegetation complexity, was significantly correlated with the number of species found on an islet. However, islet distance and elevation were not significant...
Authors
G. Perry, G.H. Rodda, T. H. Fritts, T.R. Sharp
The role of introduced species in the degradation of island ecosystems: A case history of Guam The role of introduced species in the degradation of island ecosystems: A case history of Guam
The accidental introduction of the brown treesnake (Boiga irregularis) on Guam around 1950 induced a cascade of extirpations that may be unprecedented among historical extinction events in taxonomic scope and severity. Birds, bats, and reptiles were affected, and by 1990 most forested areas on Guam retained only three native vertebrates, all of which were small lizards. Of the hypotheses...
Authors
Thomas H. Fritts, Gordon H. Rodda
The disappearance of Guam's wildlife: New insights for herpetology, evolutionary ecology, and conservation The disappearance of Guam's wildlife: New insights for herpetology, evolutionary ecology, and conservation
The wealth of data generated from intensive study of the brown tree snake as a result of the need to control introduced populations of this pest species allow several important conclusions. First, that the snakes on Guam are extraordinary in terms of their absolute abundance and in terms of their ability to exploit a broad prey base. Our data suggest an exceptionally high reproductive...
Authors
G.H. Rodda, T. H. Fritts, D. Chiszar
Identification of sex in Boiga irregularis: implications for understanding population dynamics in Guam Identification of sex in Boiga irregularis: implications for understanding population dynamics in Guam
No abstract available.
Authors
Mark A. Jordan, Gordon H. Rodda
Where's Waldo (and the snakes)? Where's Waldo (and the snakes)?
No abstract available.
Authors
G. Rodda
How to lie with biodiversity How to lie with biodiversity
No abstract available.
Authors
C.S. Robbins
Adhesive trapping II Adhesive trapping II
No abstract available.
Authors
G.H. Rodda, M. McCoid, T. H. Fritts
Trapping the arboreal snake Boiga irregularis Trapping the arboreal snake Boiga irregularis
The snake Boiga irregularis, an exotic on Guam, has eliminated the majority of the native vertebrates there. We tested traps designed to control this arboreal snake during three periods of 20-41 days in 1988 and 1989. The relative trapping successes with different baits and trap configurations indicated that this snake will not readily push through a visually obstructed entrance. However...
Authors
Gordon H. Rodda, O. Eugene Maughan, Thomas H. Fritts, Renee Rondeau
The mating behavior of Iguana iguana The mating behavior of Iguana iguana
Over a 19 month period I observed the social behaviors of individually recognized green iguanas, Iguana iguana, at three sites in the llanos of Venezuela. The behavior of iguanas outside the mating season differed from that seen during the mating season in three major ways: (1) during normal waking hours outside the breeding season, adult iguanas spent the majority of time immobile...
Authors
G.H. Rodda
The impact of the introduction of the colubrid snake Boiga irregularis on Guam's lizards The impact of the introduction of the colubrid snake Boiga irregularis on Guam's lizards
The extirpation of Guam's forest avifauna has been attributed to the accidental introduction and subsequent irruption of the brown tree snake, Boiga irregularis. However, recent dietary studies of this nocturnal arboreal snake indicate that it now preys primarily on lizards, not birds. We evaluated the effect the snake has had on Guam's lizards by contrasting lizard communities on Guam...
Authors
G.H. Rodda, T. H. Fritts
Non-USGS Publications**
Rodda, G.H. 2003. Biology and reproduction of Iguana iguana in the wild. In: Biology, husbandry, and medicine of the green iguana. Malabar, Florida: Kreiger Publishing. 1-27.
Rodda, G.H. 1984. The orientation and navigation of juvenile alligators: evidence of magnetic sensitivity. Journal of Comparative Physiology A. 154(5): 649-658.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 67
A state-of-the-art trap for the brown treesnake A state-of-the-art trap for the brown treesnake
No abstract available.
Authors
G.H. Rodda, T. H. Fritts, C.S. Clark, S.W. Gotte, D. Chiszar
The lizard fauna of Guam's fringing islets: Island biogeography, phylogenetic history, and conservation implications The lizard fauna of Guam's fringing islets: Island biogeography, phylogenetic history, and conservation implications
We sampled the lizard fauna of twenty-two small islets fringing the Pacific island of Guam and used these data to shed light on the processes responsible for present-day diversity. Habitat diversity, measured by islet area and vegetation complexity, was significantly correlated with the number of species found on an islet. However, islet distance and elevation were not significant...
Authors
G. Perry, G.H. Rodda, T. H. Fritts, T.R. Sharp
The role of introduced species in the degradation of island ecosystems: A case history of Guam The role of introduced species in the degradation of island ecosystems: A case history of Guam
The accidental introduction of the brown treesnake (Boiga irregularis) on Guam around 1950 induced a cascade of extirpations that may be unprecedented among historical extinction events in taxonomic scope and severity. Birds, bats, and reptiles were affected, and by 1990 most forested areas on Guam retained only three native vertebrates, all of which were small lizards. Of the hypotheses...
Authors
Thomas H. Fritts, Gordon H. Rodda
The disappearance of Guam's wildlife: New insights for herpetology, evolutionary ecology, and conservation The disappearance of Guam's wildlife: New insights for herpetology, evolutionary ecology, and conservation
The wealth of data generated from intensive study of the brown tree snake as a result of the need to control introduced populations of this pest species allow several important conclusions. First, that the snakes on Guam are extraordinary in terms of their absolute abundance and in terms of their ability to exploit a broad prey base. Our data suggest an exceptionally high reproductive...
Authors
G.H. Rodda, T. H. Fritts, D. Chiszar
Identification of sex in Boiga irregularis: implications for understanding population dynamics in Guam Identification of sex in Boiga irregularis: implications for understanding population dynamics in Guam
No abstract available.
Authors
Mark A. Jordan, Gordon H. Rodda
Where's Waldo (and the snakes)? Where's Waldo (and the snakes)?
No abstract available.
Authors
G. Rodda
How to lie with biodiversity How to lie with biodiversity
No abstract available.
Authors
C.S. Robbins
Adhesive trapping II Adhesive trapping II
No abstract available.
Authors
G.H. Rodda, M. McCoid, T. H. Fritts
Trapping the arboreal snake Boiga irregularis Trapping the arboreal snake Boiga irregularis
The snake Boiga irregularis, an exotic on Guam, has eliminated the majority of the native vertebrates there. We tested traps designed to control this arboreal snake during three periods of 20-41 days in 1988 and 1989. The relative trapping successes with different baits and trap configurations indicated that this snake will not readily push through a visually obstructed entrance. However...
Authors
Gordon H. Rodda, O. Eugene Maughan, Thomas H. Fritts, Renee Rondeau
The mating behavior of Iguana iguana The mating behavior of Iguana iguana
Over a 19 month period I observed the social behaviors of individually recognized green iguanas, Iguana iguana, at three sites in the llanos of Venezuela. The behavior of iguanas outside the mating season differed from that seen during the mating season in three major ways: (1) during normal waking hours outside the breeding season, adult iguanas spent the majority of time immobile...
Authors
G.H. Rodda
The impact of the introduction of the colubrid snake Boiga irregularis on Guam's lizards The impact of the introduction of the colubrid snake Boiga irregularis on Guam's lizards
The extirpation of Guam's forest avifauna has been attributed to the accidental introduction and subsequent irruption of the brown tree snake, Boiga irregularis. However, recent dietary studies of this nocturnal arboreal snake indicate that it now preys primarily on lizards, not birds. We evaluated the effect the snake has had on Guam's lizards by contrasting lizard communities on Guam...
Authors
G.H. Rodda, T. H. Fritts
Non-USGS Publications**
Rodda, G.H. 2003. Biology and reproduction of Iguana iguana in the wild. In: Biology, husbandry, and medicine of the green iguana. Malabar, Florida: Kreiger Publishing. 1-27.
Rodda, G.H. 1984. The orientation and navigation of juvenile alligators: evidence of magnetic sensitivity. Journal of Comparative Physiology A. 154(5): 649-658.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.