• Andros iguana: Conservation action plan, 2005-2011

      Knapp, Charles; Pagni, Lee (IUCN/SSC Iguana Specialist GroupGland, Switzerland, 2011)
      The endangered Andros iguana, Cyclura cychlura cychlura, is the largest native terrestrial vertebrate, and the only iguana (of 3 species) in the Bahamas that is not confined presently to small cays. The Andros iguana is unique to Andros Island and despite the recent formation of a national park on North Andros Island in 2002, the population is declining. This document presents a comprehensive plan for conservation measures considered essential to the long-term survival of this flagship species in the wild. It combines the knowledge and expertise of highly qualified experts from government and non-government organizations within The Bahamas with the collective conservation experience and scientific expertise of the IUCN/SSC Iguana Specialist Group.
    • Body size, demography, and body condition in Ctenosaura bakeri

      Pasachnik, Stesha A.; Montgomery, C.E.; Martinez, A.; Belal, N.; Clayson, S.; Faulkner, S. (2012)
      Abstract.—Utila Spiny-tailed Iguanas, Ctenosaura bakeri, are listed as Critically Endangered by the IUCN Redlist Assessment and are listed under Appendix II of CITES. This species occupies a portion of Utila, a small continental island located off the northern coast of Honduras, in the Bay Islands chain. Habitat destruction and overharvesting for consumption and the pet trade are among the top threats facing this species. Though first described in 1901 (Stejneger) and currently the focus of a local conservation program, little is known concerning that basic biology of this species. Combining data from six years we examined body size, sexual size dimorphism, and changes in demography and body condition over the study period. Our results indicate that males are larger and heavier than females on average, and have a longer tail for a given snout-vent length, as is the case with most iguanas. Over the study period we found an increase in the ratio of males to females, suggesting that female biased hunting pressure is increasing. This is consistent with an increase in the human population size and a preference for consuming gravid females. The body condition of both males and females declined over the duration of the study, which is suggestive of a decrease in habitat quality. These results indicate that the situation for this endangered species is becoming increasingly threatening. Conservation measures should focus on alleviating these threats through increased law enforcement, outreach, and education.
    • Conservation assessment of Guaiacum sanctum and Guaiacum coulteri: Historic distribution and future trends in Mexico

      López-Toledo, Leonel; Gonzalez-Salazar, C.; Burslem, D.F.R.P.; Martinez-Ramos, M. (2011)
      Guaiacum sanctum and Guaiacum coulteri are long‐lived Mesoamerican timber tree species heavily exploited throughout their range and considered to be at risk of extinction. Both species are included on the IUCN Red List and on CITES Appendix II, but there has been no formal assessment of the conservation status of either species. We used ecological niche modeling and rapid assessments of local density and population size structure to provide such evaluations....
    • Conservation Of amphibians And reptiles In The Bahamas

      Buckner, Sandra D.; Knapp, Charles R.; Cant, Shelley V.; Iverson, John B.; Horrocks, Julia; Wilson, Byron; Hailey, Adrian (Brill, 2011)
      ...The native herpetofauna of The Bahamas is derived primarily from Cuba and Hispaniola, and numbers 46 species comprised of three frogs (including one endemic),25 lizards (13 endemic), 11 snakes (7 endemic), two freshwater turtles, and five sea turtles. Of thenative terrestrial species, 85% are either not assessed or data deficient to affirm IUCN listing, thusstressing the need for more research in The Bahamas. Currently, there are few legislative laws directly protecting the herpetofauna of The Bahamas although all three rock iguanas (Cyclura) are technically given full protection under the Wild Animals (Protection) Act of 1968.....
    • Morphological and demographic analyses of Ctenosaura melanosterna across its range: Implications for population level management

      Pasachnik, Stesha A.; Montgomery, C.E.; Ruyle, L.E.; Corneal, J.P.; Antunez, E.E. (2012)
      The Black-chested Spiny-tailed Iguana, Ctenosaura melanosterna, is listed as Endangered by the IUCN Redlist Assessment and under Appendix II of CITES. The species has two evolutionarily significant units (ESUs), found in the Valle de Aguán and the Cayos Cochinos Archipelago, Honduras. Each ESU has been shown to be genetically distinct and each is listed, for differing reasons, as Critically Endangered by the IUCN. Habitat destruction and overharvesting for consumption and the pet trade are among the top threats facing the mainland, Valle de Aguán, population. The Cayos Cochinos population faces similar threats to a lesser degree; however, its restricted range (2.2 km2 ) heightens the potential severity of these threats, and makes this population highly susceptible to the impact of hurricanes. We examined body size, demography, and body condition in both populations. Our results show that the average adult size is smaller on the mainland, and there are more than expected small individuals in that population. Additionally the sex ratio is significantly male biased on the mainland relative to the islands. These results demonstrate evidence of a more severe poaching pressure on the mainland that is biased towards larger individuals and females. Body condition index did not differ between the more disturbed mainland area and the more pristine island area, suggesting that habitat alteration does not pose as serious a threat to the mainland population as poaching. Potential negative effects of a restricted range on the morphology and demography of the island ESU were observed. Conservation measures should acknowledge the differences between the ESUs when defining management initiatives for this species.
    • Rusty-gray lesser bamboo lemur (Hapalemur meridionalis). The IUCN Red List of Threatened Species.

      Donati, Giuseppe; Balestri, M.; Campera, M.; Eppley, Timothy M. (International Union for Conservation of Nature, 2020)
      There is a suspected population reduction of >=30% in this species over a three generation period. Causes of this reduction (which have not ceased) include continuing decline in area, extent and quality of habitat, and exploitation through hunting. Between 1999-2005 habitat loss in the Tsitongambarika Protected Area has been 1.74% per year (Andriamasimanana 2008). A population reduction of ?30% is also suspected to be met in the next 27 years (over a three generation time period) due to the same causes. These causes have not ceased, and will to a large extent not be easily reversible. Of note, it has been estimated that there will be a 21% reduction in the species' range from 2000 to 2080 due to climate change alone (Brown and Yoder 2015). Based on these premises, the species is listed as Vulnerable....