Spiny-tailed Iguanas (Ctenosaura similis) in Venezuela

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FOCUS ON CONSERVATION Conserving Southern California’s Mountain Yellow-legged Frog (Rana muscosa) According to the World Conservation Union, at least one-third of the world’s estimated 6,000 amphibian species are threatened with extinction. Many of these amphibians reside in the United States, and two critically endangered species, the Mountain Yellow-legged Frog (Rana muscosa) and the California Red-legged Frog (Rana draytonii), reside in California. In close partnership with the U.S. Fish and Wildlife Service, the U.S. Forest Service, the U.S. Geological Survey, and California Department of Fish and Game, the San Diego Zoo’s Conservation and Research for Endangered Species (CRES) is participating in the recovery of the critically endangered Mountain Yellow-legged Frog (Rana muscosa). In August 2006, CRES received 82 Mountain Yellow-legged Frog tadpoles. These animals were salvaged from a drying streambed in Southern California’s San Jacinto Mountains. The tadpoles were brought to the Applied Animal Ecology lab at CRES, where they were housed in spacious aquaria. As of August 2008, the remaining 62 frogs are all nearing adult size and are showing breeding behaviors. Some frogs will be moved to other AZA institutions for breeding, and all progeny will be released within the historical range of the species in a project designed to monitor the fate of released frogs and develop an optimal release strategy. The project will end when the conservation partners determine that captive propagation is no longer useful for recovery efforts, an outcome expected to be more than 10 years in the future. California populations of the Mountain Yellow-legged Frog were listed as endangered by the U.S. Fish and Wildlife Service in 2002. Despite this protection, these frogs continue toward extinction, with only seven known populations remaining in southern California, each ranging in size from seven to no more than 75 adults. While habitat loss historically has been the leading cause of amphibian decline, the most immediate threat is from the chytrid fungus. In addition to recent fire and drought damage, the decline of the frog is further compounded by non-native predators such as bullfrogs and trout, and possibly by airborne and aquatic contaminants. Jeff Lemm Research Coordinator Applied Animal Ecology Division CRES, Zoological Society of San Diego
ROBERT POWELL Lesser Antillean Iguanas (Iguana delicatissima), such as this male, often assume what appear to be extremely awkward positions for access to prized morsels. The letter on the side of this individual facilitated individual recognition during a study on home ranges and activity periods. See article on p. 130.
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VOLUME 15, NUMBER 3 SEPTEMBER 2008
Page 3 and 4:
TABLE OF CONTENTS IGUANA • VOLUME
Page 5 and 6:
AMPHIBIANS AND REPTILES OF DOMINICA
Page 7 and 8:
ARLINGTON JAMES ARLINGTON JAMES AMP
Page 9 and 10:
PETER J. MUELLEMAN AMPHIBIANS AND R
Page 11 and 12:
ROBERT POWELL AMPHIBIANS AND REPTIL
Page 13 and 14:
ROBERT POWELL ROBERT POWELL JEFFREY
Page 15 and 16: ARLINGTON JAMES AMPHIBIANS AND REPT
Page 17 and 18: GUATEMALAN BLACK IGUANA Ecology and
Page 19 and 20: GUATEMALAN BLACK IGUANA Hollow tree
Page 21 and 22: GUATEMALAN BLACK IGUANA Searching f
Page 23 and 24: GUATEMALAN BLACK IGUANA Literature
Page 25 and 26: GAVIALIS GANGETICUS Gharial Reprodu
Page 27 and 28: GAVIALIS GANGETICUS Early this year
Page 29 and 30: ADAM MITCHELL DOMINICAN RACERS A Pr
Page 31 and 32: ROBERT POWELL DOMINICAN RACERS Also
Page 33 and 34: Lesser Antillean Iguana (Iguana del
Page 35 and 36: Proud sponsor of the IRCF and this
Page 37 and 38: JOHN S. PARMERLEE, JR. ROBERT POWEL
Page 39 and 40: EDUARD ASENS PAGÉS SPINY-TAILED IG
Page 41 and 42: TRAVELOGUE We go through life with
Page 43 and 44: TRAVELOGUE This dead bat had been h
Page 45 and 46: TRAVELOGUE Few living things can ma
Page 47 and 48: TRAVELOGUE A two-meter high starbur
Page 49 and 50: GAD PERRY HISTORICAL PERSPECTIVES o
Page 51 and 52: ROY WOOD, EVERGLADES NATIONAL PARK
Page 53 and 54: COMMENTARIES Sometimes I wonder whe
Page 55 and 56: THERESA CROW, MISSOURI STATE UNIVER
Page 57 and 58: LAURIE J. VITT NATURAL HISTORY REPO
Page 59 and 60: GLENN LOWSON, TORONTO STAR NEWSBRIE
Page 61 and 62: NEWSBRIEFS If any of these measures
Page 63 and 64: NEWSBRIEFS changes illegal. “This
Page 65: IRCF International Reptile Conserva
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Spiny-tailed Iguanas (Ctenosaura similis) in Venezuela

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