A SOUTH AMERICAN LAMPREY

Present-day South American climate

Article history: This paper documents the m Received 25 April 2007 Accepted 13 October 2007 Available online 9 September 2008

Reproduction in South American Camelids

All camelids (including the Bactrian [2 humps] and Dromedary [1 hump] old world camels) have a diploid number of 74 chromosomes. Interbreeding can occur between any of these species, producing fertile offspring. In llama and alpaca are occasionally interbred, producing an animal with longer but coarser fibre length than Alpaca. These are known as Huarizo. Using artificial insemination between o...

Reproduction in South American Camelids

Association between Heart Disease and Subjective Health in Ten North, Middle, and South American Countries

Introduction: This study was conducted to compare 10 American countries for the association between self-reported physician diagnosis of heart disease and subjective health above and beyond the effect of socio-economic factors. Methods: With a cross-sectional design, this study used data from Research on Early Life and Aging Trends and Effects (RELATE). T...

Historical biogeography of South American freshwater fishes

Dealing with complex palaeogeographical histories is a problem of major importance in biogeographical studies. Since the superposition of palaeogeographical events may produce multiple changes in species range distributions, highly complex patterns of animal and plant distributions are to be expected (Nelson & Platnick, 1981; Brown & Gibson, 1983; Myers & Institut de Recherche pour le Développe...