. Bulletin. Science; Natural history; Natural history. 1974 UNUSUAL ltlIN<; AGGREGATIOI 01 FROG! Osa locality are smaller than specimens from the other known locality lor A. spurrelli in Costa Rica and from Panama (Duellman, l()70). By our measurements, twenty-five Osa males are significantly (p , Median icsi) smaller than nine males from the Dominieal Road (16 km SW San [sidro ile Fl General, Puntarenas Province, Costa Rica in the collection of the University of Southern California); two females taken al the latter locality are al leasl 2 mm larger than our largest female. Description
. Bulletin. Science; Natural history; Natural history. 1974 UNUSUAL ltlIN<; AGGREGATIOI 01 FROG! Osa locality are smaller than specimens from the other known locality lor A. spurrelli in Costa Rica and from Panama (Duellman, l()70). By our measurements, twenty-five Osa males are significantly (p , Median icsi) smaller than nine males from the Dominieal Road (16 km SW San [sidro ile Fl General, Puntarenas Province, Costa Rica in the collection of the University of Southern California); two females taken al the latter locality are al leasl 2 mm larger than our largest female. Description el the study area: The pond around which the frogs were observed is located at an elevation of less than 50 m, near the Mile 4 marker on the Lowland Road to the Pacific, not far from the Rincon dc Osa airstrip, on the Osa Peninsula, Puntarenas Province, Costa Rica. This is in an area of high rainfall (approx. 3500 mm/yr) with a short definite dry season, and warm temperatures (usually above 19°C). Evergreen species predominate in the surrounding forest; most trees hold a good crown of leaves during the entire year. The pond was formed by roadbuilding activities of the local lumber company, Osa Productos Forestales. probably in the late 1950"s or early 1960's. In August, 1962, entomological and herpetological collections were made in and around the pond by members of University of Southern California and Los Angeles County Museum-USACR field parties (Starrett and Case- beer, 1968) and since then biologists from various institutions, including the Organization for Tropi- cal Studies, have visited the site for one purpose or another. Beginning in 1968, the senior author has done limited collecting and made observations at the pond semi-annually, during the dry and wet seasons. The pond, which lies about 100 m from the road, is roughly oval in outline. 70m x 50 m. and it has an area of open water in the center which is surrounded by flooded grass or primary forest (Fig. 1). T
Size: 2340px × 1068px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectnaturalhistory, booksubjectscience
