The southern right whale (Eubalaena australis) was one of the most intensively hunted whales between the 17th and 20th centuries in the southern hemisphere. Recent estimates indicate that today there are around 7000 whales, representing 5 to 10% of its original population. On the other hand, recent studies estimated that the population that migrates to the Brazilian coast grew by 14% from 1987 to 2003. However, there is no information about sex-ratio for adults or for calves in this region, which is an important parameter for understanding the biology of the species. We present here the first estimate of calves' sex-ratio of southern right whales found along the southern Brazilian coast, one of the most important wintering grounds for the species. Sex was molecularly indentified for 21 biopsies collected from calves between 1998 and 2002, along the coast of Rio Grande do Sul and Santa Catarina States, in southern Brazil. The sex-ratio was two females for one male, however, it was not statistically different (χ2 test, α = 0.05; df = 1) from the expected ratio of 1:1. This result is in accordance with the sex-ratio estimated for the species of all ages using external morphology (and behaviour information), as well as for most species of baleen whales.
Este estudo teve como objetivo investigar a qualidade das propriedades psicométricas do Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) quando aplicado em serviços de atenção psicossocial. Participaram 445 usuários dos serviços de Centros de Atenção Psicossociais – Álcool e Outras Drogas (CAPS-AD), e os resultados das análises teóricas por juízes especialistas indicaram que o conteúdo dos itens é adequado para avaliar o grau de envolvimento de um indivíduo com álcool e crack. Análise fatorial confirmatória mostrou que a estrutura unidimensional com seis itens tem qualidade de ajuste aos dados, é fidedigna e invariante para idade, escolaridade e tipo de droga. Os itens têm um valor decrescente de discriminação e são facilmente endossados pelos participantes. As evidências apresentadas sugerem que o ASSIST possui qualidades psicométricas promissoras para uso na atenção psicossocial. Pode contribuir para a compreensão do quadro inicial dos usuários do serviço, diminuindo erros na tomada de decisão e favorecendo o planejamento de intervenções.
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