A revision of the South American species of Brunfelsia (Solanaceae) / Timothy C. Plowman ; S. Knapp and J.R. Press, editors.

n.s. no.39(1998)

The brains of the South American marsupials Caenolestes and Orolestes, by Jeannette Brown Obenchain.

v.14:no.3(1925)

The South American mice referred to Microryzomys and Thallomyscus, by Wilfred H. Osgood.

v.20:no.1(1933)

Diet of the South American frog Leptodactylus ocellatus (Anura, Leptodactylidae) in Uruguay

The diet of Leptodactylus ocellatus (L., 1758) was studied in specimens collected at Maldonado Department (Uruguay), where monthly surveys were made between August 1998 and March 2000. A total of 143 frogs were collected, measured, sexed, and dissected, to assess stomach contents. The anurans were grouped into three age classes and four categories (considering sex and capture date). The trophic amplitude for each age class and sex-season category was quantified using Shannon-Weaver Index, and the trophic niche overlap between ages and categories by using the Pianka Index. Comparisons among treatments were made by G-tests. The most important prey items were coleopterans (IRI = 2547), and significant correlations were found between predator and prey sizes. The major differences on diet composition were found between extreme age classes (froglets and adults). Significant differences were also detected between sexes in the cold season but not in the warm season. Any of these changes in diet may be related with the availability of prey.

The north Pacific allies of the purple sandpiper, by Boardman Conover.

v.29:no.11(1944)

The South American herpetofauna : its origin, evolution, and dispersal / William E. Duellman, editor.

no.7 (1979)

Systematics of the South American marsupial family Caenolestidae / Larry G. Marshall --.

n.s. no.5(1980)

A preliminary taxonomic review of the South American bearded saki monkeys genus Chiropotes (Cebidae, Platyrrhini), with the description of a new supspecies / Philip Hershkovitz.

n.s. no.27(1985)

Systematics of the South American marsupial family Microbiotheriidae / Larry G. Marshall --.

n.s. no.10(1982)

Geographic variation in the Central American colubrine snake, Vinia sebae [by] Karl P. Schmidt and A. Stanley Rand.

v.39:no.10(1957)

A review of the South American catfish tribe Hoplomyzontini (Pisces, Aspredinidae), with descriptions of new species from Ecuador / Donald J. Stewart.

n.s. no.25(1985)

North American plesiosaurs : by Samuel W. Williston -- ; Oliver C. Farrington --

v.2:no.1(1903)

The South American gracile mouse opossums, genus Gracilinanus Gardner and Creighton, 1989 (Marmosidae, Marsupialia) : a taxonomic review with notes on general morphology and relationships / Philip Hershkovitz.

n.s. no.70(1992)

The diet of the South American sea lion (Otaria flavescens) at Río Negro, Patagonia, Argentina, during the winter-spring period

The South American sea lion, Otaria flavescens (Shaw, 1800) population is steadily expanding along the Patagonian coast of Argentina in the last decades. However, little is known about the feeding ecology of the species in the area. The aim of this study was to analyze the food habits of O. flavescens from 91 scats collected at Río Negro province, during the winter and spring of 2005. Fish occurred in 96% of scats containing prey remains, followed by cephalopods (26%). Raneya brasiliensis (Kaup, 1856) was the most frequent and abundant species occurring in 58.6% of samples and constituting almost 50% of fish predated. Second in importance were Porichthys porosissimus (Cuvier, 1829) and Cynoscion guatucupa (Cuvier, 1830) in terms of occurrence (%FO 20.7) and numbers (29.6%) respectively. The squid Loligo gahi (d'Orbigny, 1835) was the most frequent cephalopod prey (42.1%), whereas Octopus tehuelchus (d'Orbigny, 1834) was the most abundant (77%). The higher amount and diversity of prey found in the spring in comparison with the winter season might be related to a higher feeding activity of seals or to a seasonal increase in food availability in the area.