Contribuição ao conhecimento da ictiofauna do Manguezal de Cacha Pregos, Ilha de Itaparica, Baía de Todos os Santos, Bahia Contribution to knowledge of ichthyofauna of Mangrove Cacha Pregos, Itaparica island, Todos os Santos bay, Bahia

<abstract language="eng">A check-list of fishes collected in a mangrove in Cacha Pregos, south of ltaparic Island, State of Bahia, Brazil (about 13o07'S,38o48'W) from 1988-1989 and 1991-1992 is presented. Fifteen orders, 46 families and 85 species (Teleostei except one Chondrichthyes) were identified, represented specimens whose adults live in different marine ecossystems

Constituintes químicos fixos e voláteis dos talos e frutos de Piper tuberculatum Jacq. e das raízes de P. hispidum H. B. K. Fixed and volatile chemical constituents from stems and fruits of Piper tuberculatum Jacq. and from roots of P. hispidum H. B. K.

Os óleos essenciais dos frutos e talos finos de Piper tuberculatum e das raízes de P. hispidum, coletados no estado de Rondônia, foram obtidos por hidrodestilação e analisados por GC e GC-MS. Foram identificados como constituintes majoritários, nos óleos dos frutos e talos finos de P. tuberculatum, o óxido de cariofileno (32,1%) e (26,6%) e o (E)-cariofileno (17,7%) e (12,3%), respectivamente. No óleo essencial das raízes de P. hispidum, foram identificados, como constituintes majoritários, o dilapiol (57,5%), a elemicina (24,5%) e o apiol (10,2%). Do extrato etanólico dos frutos de P. tuberculatum, foram isolados os esteróides &#946;-sitosterol e estigmasterol, as amidas piplartina e dihidropiplartina e um derivado do ácido cinâmico, o ácido 3,4,5-trimetoxi-dihidrocinâmico.<br>The essential oils of the fruits and fine stems of Piper tuberculatum and of the roots of P. hispidum, collected in the state of Rondônia, had been gotten by hydrodistillation and analyzed by GC and GC-MS. Caryophyllene oxide - 32,1% in fruits and 26,6% in fine stem, and (E)-caryophyllene - 17,7% in fruits and 12,3% in fine stems, were identified as the major constituents in such parts of P. tuberculatum. In the essential oil of the roots of P. hispidum, dillapiol (57,5%), elemicine (24,5%) and apiole (10,2%) were identified as the most abundant constituents. From the ethanolic extract of the fruits of P. tuberculatum, the steroids &#946;-sitosterol and stigmasterol, the amides piplartine and dihidropiplartine and the derivative of the cinâmico acid 3,4,5-trimethoxy-dihidrocinâmic acid were isolated