Vertical distribution of the copepod Clausocalanus furcatus (Bradyi, 1883) (Calanoida: Clausocalanidae) off São Sebastião region, São Paulo, Brazil - Vega Perez, Luz Amelia; Hernandez, Simone; Ara, Koichi; Liang, Tsui Hua; Campos, Márcia A. G. (International Conference on Copepoda, 1999)