ABSTRACT The purpose of this study was to assess the effect of different herbicide treatments on moisture removal and calorific power of biomass sorghum for co-generation of electric energy through burning. The experiment was conducted in randomized complete block design with four replicates per treatment and a 6x4 factorial scheme (six herbicide treatments x four intervals between spraying and harvesting). The herbicide treatments were: two different doses of glyphosate (1.92 kg a.i. ha-1 and 3.84 Kg a.i. ha-1), paraquat (0.4 Kg a.i. ha-1), a commercial mixture of paraquat + diuron (0.6 + 0.3 Kg a.i. ha-1), glufosinate-ammonium (0.8 Kg a.i. ha-1) and control (unsprayed). The intervals between spraying and harvesting assessed were 7, 14, 21 and 28 days after desiccation (DAD). It was assessed: the number of leaves per plant, moisture content of leaves, panicles, culm and whole ground plants and Superior Calorific Power (SCP). The herbicides paraquat and paraquat + diuron promotes defoliation, after 14 DAD. Glyphosate, paraquat, paraquat + diuron and glufosinate-ammonium reduce leaf and panicle moisture, despite only glyphosate reduces moisture in the culm. The herbicides do not affect the SCP of biomass sorghum. Therefore, the herbicides, especially glyphosate, have high potential for pre-harvest desiccation in biomass sorghum.

Se documenta el primer registro de la familia Triacanthodidae (Actinopterygii: Tetraodontiforrmes) en el Brasil, con base en dos ejemplares de Hollardia hollardi Poey, 1861 de 111,0 y 128,4mm de longitud patrón capturados en el litoral del estado de Bahia, nordeste del Brasil (13º21,119’S; 38º38,896’W y 20º27,667’S; 39º38,101’W) entre 518 y 1680m de profundidad en junio y julio del 2000. Ambos especímenes son descritos y comparados con otros registros reportados.

The first record of the Triacanthodidae family (Actinopterygii: Tetraodontiformes) from Brazil is documented, based on two specimens (111.0-128.4mm SL) of Hollardia hollardi Poey, 1861, collected off the coast of Bahia, Brazil (13º21.119’S, 38º38.896’W and 20º27.667’S, 39º38.101’W) at depths of 518 and 1680m in June and July, 2000. The two specimens are described and compared with other published records.

É apresentado o primeiro registro da família Triacanthodidae (Actinopterygii: Tetraodontiformes) para o Brasil com base em dois exemplares de Hollardia hollardi Poey, 1861 medindo 111,0 e 128,4mm de comprimento padrão coletados em 13º21,119’S, 38º38,896’W e 20º27,667’S, 39º38,101’W (litoral do estado da Bahia, nordeste do Brasil) entre 518 e 1680m de profundidade em junho e julho de 2000. Ambos os exemplares são descritos e comparados com outros registros citados.

Atherinella blackburni (Schultz, 1949) (Atherinopsidae), is known in the Atlantic Ocean in Costa Rica, south of Caribe and from Venezuela to central Brazil. The distribution and the intraespecific variation of characters of A. blackburni are poorly known. This study records A. blackburni in Bahia littoral and presents more informations about its intraespecific variation.

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.

Patterns of geographic variation in 10 morphometric characters were analyzed in a sample of 91 specimens of the batfish, Ogcocephalus vespertilio (L.), from the NE and SE Brazilian coast, using multivariate statistics and randomization tests. The specimens were ordinated by principal components analysis in two groups corresponding to the regions north and south of the 23ºC isotherm, and size variation was found to account for 70.3%, whereas shape differences accounted for 23.6% of the total variation in morphometric characters. The two groups were different at the 1% significance level by multivariate analysis of variance based on the Wilk's criterion, tested by a randomization procedure. Width of illicial cavity and distance from anus to anal fin were the characters most contributing to the differentiation of the population samples.

Comparative morphometrics of Ctenosciaena gracilicirrhus, Paralonchurus brasiliensis and Micropogonias furnieri (Teleostei: Sciaenidae) by multivariate analysis of truss networks. Morphological differentiation among three species of sciaenid fishes, Ctenosciaena gracilicirrhus, Paralonchurus brasilliensis and Micropogonias furnieri, was analyzed by multivariate statistical techniques, using measuraments obtained from truss networks based on anatomical landmarks. Principal components analysis of interlandmark distances defined by the truss system showed that the individuais of Ctenosciaena gracilicirrhus are different from those of the other two species in relation to shape, being more similar to the individuals of Micropogonias furnieri in relation to size.

The present paper is the first part of the catalogue of marine fishes belonging to the collection of the Laboratory of Ichthyology (Universidade Federal do Rio de Janeiro-RJ) to be published. Here are included Chondrichthyes (Rajiformes) and part of Osteichthyes, Teleostei (Elopiformes to Dactylopteriformes) in a total amount of 30 families, 52 genera and 62 species. The most part of the material have been collected at the littoral of the State of Rio de Janeiro. For each species considered is given the vulgar name (when known in Southeastern Brazil), the known distribution (in Western Atlantic Ocean) and some data as collecting locality, total number of collected specimens and the register number in the collection. Scorpaena isthmensis Meek & Hildebrand, 1928 (Scorpaenidae) is for the first time mentioned for the Southern littoral of Brazil.