Burrowes Joglar -2011 Froglog article

Herpetological Review, 2002

Molecular Phylogenetics and Evolution, 2008

Molecular Phylogenetics and Evolution, 2007

Herpetologica, 2004

We monitored 11 populations of eight species of Eleutherodactylus in Puerto Rico from 1989 through 2001. We determined relative abundance of active frogs along transects established in the Caribbean National Forest (El Yunque), Carite Forest, San Lorenzo, and in the vicinity of San Juan. Three species (Eleutherodactylus karlschmidti, E. jasperi, and E. eneidae) are presumed to be extinct and eight populations of six different species of endemic Eleutherodactylus are significantly declining at elevations above 400 m. Of the many suspected causes of amphibian declines around the world, we focused on climate change and disease. Temperature and precipitation data from 1970-2000 were analyzed to determine the general pattern of oscillations and deviations that could be correlated with amphibian declines. We examined a total of 106 tissues taken from museum specimens collected from 1961-1978 and from live frogs in 2000. We found chytrid fungi in two species collected at El Yunque as early as 1976, this is the first report of chytrid fungus in the Caribbean. Analysis of weather data indicates a significant warming trend and an association between years with extended periods of drought and the decline of amphibians in Puerto Rico. The 1970's and 1990's, which represent the periods of amphibian extirpations and declines, were significantly drier than average. We suggest a possible synergistic interaction between drought and the pathological effect of the chytrid fungus on amphibian populations.

The Mountain Coqui (Eleutherodactylus portoricensis) is a frog endemic to montane rainforests in the Cordillera Central and Luquillo Mountains of Puerto Rico. Classified as endangered by the IUCN Red List and as vulnerable by the Department of Natural and Environmental Resources of Puerto Rico, this species has undergone considerable decline in the Luquillo Mountains. To evaluate the population status of E. portoricensis across its entire range, we conducted about 87 hours of surveys at 18 historical localities and 25 additional localities that we considered suitable for this species. We generated occupancy models to estimate the probability of occurrence at surveyed sites and to identify geographic and climatic factors affecting site occupancy. We also constructed a suitability map to visualize population status in relation to the presence of land cover at elevations where the species has been documented, and determined the dates when populations were last detected at historical localities. Eleutherodactylus portoricensis was detected at 14 of 43 localities, including 10 of 18 historical localities, but it was not detected at any localities west of Aibonito (western Cordillera Central). Occupancy models estimated the probability of occurrence for localities in the western Cordillera Central as zero. Site occupancy was positively associated with montane cloud forest, and negatively associated with the western Cordillera Central, maximum temperature, and precipitation seasonality. The suitability map suggests that declines have occurred despite the presence of suitable habitat. We suggest upgrading the extinction risk of E. portoricensis and potentially developing a captive breeding program for this species.

Proceedings of the Biological Society of Washington, 1977

The Neotropical Region has a greater species richness of anuran amphibians than any other region in the world. Approximately 44% of the total number of species of anurans of the world (3,533) occur in the American tropics, and. many new species are discovered every year. Patterns of species diversity were determined by analyzing data from 48 sites-32 in the lowland tropics (11 Middle American, 21 South American), nine in montane cloud forests (four Middle American, five South American), and seven in supra-treeline regions of the Andes. Taxa also were noted as to their reproductive mode (site of egg deposition, site of larval development, and associated parental care, if any). As expected, for the entire anuran fauna, there are gradients from lower diversity in dry regions to higher diversity in wet regions, and from lower diversity at high elevations to higher diversity at low elevations. The greatest species diversity is in the equatorial region of the upper Amazon Basin. However, different patterns emerge when taxonomic groups (families, subfamilies, and large genera) are examined 1 The compilation of data from so many sites has been possible through the generosity of several colleagues who provided unpublished data on their own fieldwork; for their kind help I am grateful to Patricia A

Check List, 2013

Eleutherodactylus cooki, the “Coqui Guajon”, is a frog endemic to the southeastern portion of the island of Puerto Rico. Due to highly specialized habitat requirements and limited range, Eleutherodactylus cooki is listed on the US Endangered Species List as Threatened. Several individuals of this species were observed during four herpetological surveys in the Icaco Valley within the ward of Mullas in Patillas, Puerto Rico. These observations expand the confirmed range of this species.

Journal of Tropical Ecology, 2003

... Karen H. Beard*1, Anne K. Eschtruth*, Kristiina A. Vogt†, Daniel J. Vogt† and Frederick N. Scatena‡ ... Anecdotal data sug-gest that E. coqui control their prey since there are high insectivore densities and low herbivory rates in the study forest (Angulo-Sandoval & Aide 2000). ...

A mi familia iii

The Herpetological Bulletin, 2009

one species of Leptodactylus and three species of Eleutherodactylus have been recorded from dominica, a lesser antillean island of recent volcanic origin. the Mountain chicken Frog (Leptodactylus fallax) is native and listed on the iucN red list as “critically endangered” due mainly to overhunting, habitat loss, and the effects of chytridiomycosis. Eleutherodactylus amplinympha and E. martinicensis are native, and the former is an island endemic. Eleutherodactylus johnstonei is invasive and thought to have arrived on the island in the aftermath of Hurricane david in 1979. However, it has not been found during recent surveys. using timed 50and 100-m transects, we surveyed five sites at different elevations and subjected to varying levels of human and natural disturbances to assess frog numbers, microhabitat associations, and perch heights. Both E. amplinympha and E. martinicensis used available habitat, demonstrating no apparent bias for particular perches or microhabitats. Both spec...