Revista Brasileira De Zoologia 

About: Revista Brasileira De Zoologia is an academic journal. The journal publishes majorly in the area(s): Genus & Population. It has an ISSN identifier of 0101-8175. It is also open access. Over the lifetime, 2335 publications have been published receiving 34256 citations.

Nematóides do Brasil. Parte V: nematóides de mamíferos

Abstract: A survey of nematode species parasitizing Brazilian mammals is presented, with enough data to provide their specific identification. The tirst section refers to the survey ofthe species, related to 21 superfamilies, 45 families, 160 genera and 495 species that are illustrated and measurement tables are given. The second section is concerned to the catalogue ofhost mammals which includes 34 families, 176 species and their respective parasite nematodes. The identification of these helminths is achieved by means of keys to the superfamilies, families and genera. Specific determination is induced through the figures and tables as above mentioned.

Eficiência de armadilhas de queda (pitfall traps) em amostragens de anfíbios e répteis no Brasil

Abstract: The effectiveness of pitfall traps associated with drift fences to capture amphibians and reptiles in three field studies, in Rio Grande do Sul (extreme southern Brazil), Sao Paulo (Sao Paulo, southeastern Brazil), and Amazonas (Amazonas, northern Brazil) is described. At Santa Maria, a total of 2040 amphibians and reptiles were caught in 30 pitfalls (200 L, with drift fence) during 18 months of study (capture efficiencies of 3.78 amphibians and reptiles/pitfall/month and 0.14 snake/pitfall/month). At Itirapina, Sao Paulo, 1262 amphibians and reptiles were obtained in 72 pitfalls (100 L, with drift fence) during six months (capture efficiencies of 11,9 amphibians and reptiles/pitfall/month and 0,38 snake/pitfall/month). At Rio Pitinga, Amazonas, over 600 amphibians and reptiles were caught in 50 pitfalls (100-150 L, with drift fence) during three months (capture efficiencies of ca. 4.00 amphibians and reptiles/pitfall/month and 0.87 snake/pitfall/month). Capture efficiencies of 1.25 to ~3.92 amphibians and reptiles/pitfall/month were obtained in four other unpublished studies made by other authors in Brazil, all of them using 20-35 L traps, either with or without drift fences. Higher capture efficiencies for snakes were obtained in those studies in which larger containers (100-200 L) were used. The results presented here indicate that pitfall traps are extremely useful to sample amphibians and reptiles in Brazil, especially anurans and lizards. From these results, it is possible to preview the capture of 125 to 1200 amphibians and reptiles with 100 pitfalls during one month, regardless of the size of the pitfalls and sampling design of the trap arrays. The main advantages and disadvantages of the method and detailed guidelines on how to design, install, and use the traps is discussed.

Life history and management of the tambaqui (Colossoma macropomum, Characidae): an important Amazonian food fish

Abstract: 1967) drai­nage systems. The genus has not been adequately revised, but it appears tobe represented by only two species in the Amazon Basin. The Amazonianspecies are much confused in the literature, but easily distinguished uponexamination of live or dead specimens.Colossoma macropomum is the second largest scaled fish (after Arapaimagigas, Osteoglossidae) in the Amazon Basin and reaches at least one meter intotal length and 30 kg in weight (Fig. 1). The fish possesses the uniquecombination of molariform-like teeth adapted for crushing hard nuts and nu­merous elongated gillrakers that are employed to capture zooplankton (Fig. 2).Also noteworthy are its elongated opercula that support large fleshy flaps.The enlarged opercular appendages help increase water flow (with zooplankton)through the gills. Colossoma brachypomum is a smaller fish, but still reachesat least 90 cm in total length and 20 kg in weight. It is easily distinguishedfrom C. macropomum by the triangular space between the first and secondtooth rows in its premaxillae, its small gillrakers and the presence of teethon the maxillary bones (C. macropomum has no maxillary teeth).Young to pre-adult C. macropomum are ovoidal to rhomboidal shapedfishes, but during ontogeny into adults gradually become more elongated. Inyounger individuals (less than about 40 cm standard length) the cusps ofthe molariform-like teeth are higher and sharper than the lower and blunterprojections of adults. Two conical teeth rest posteriorly against the symphysealpair in the lower jaw, and give the impression of being .supports for thefront members. The premaxillae are endowed with two rows of teeth, andthe four posterior elements - unlike in C. brachypomum - are set flushagainst the front members.The gillrakers of C. macropomum range from about 85-100 in number onthe first branchial arch. Each gillraker is endowed with microscopic ctenoid­like structures that alternate with one another on the internal side of eachfilament. Short, supplementary gillrakers reduce the space between the largerelements at the base of the branchial arches.The stomach is well defined and very elastic in C. macropomum. Betweenthe stomach and upper intestine are a larger number of pyloric caeca, whoseMuseu Paraense Emilio Goeldi, Belem, Para.

Taxonomia e variação geográfica das espécies do gênero Alouatta Lacépède (Primates, Atelidae) no Brasil

Abstract: Neste estudo analisou-se a variacao geografica e nao-geografica de taxons de bugios, genero Alouatta Lacepede, 1799, que ocorrem no Brasil, com o objetivo de esclarecer a taxonomia do grupo. Para a analise morfologica, examinou-se um total de 1.286 especimes mantidos em cinco museus brasileiros e dois norte-americanos. O material consistiu basicamente de peles, crânios e ossos hioides; esqueletos e especimes preservados em via umida foram escassos. O estudo se baseou na analise qualitativa dos complexos morfologicos em adicao a 18 morfometicos do crânio e osso hioide. Antes das decisoes taxonomicas, elaborou-se um estudo de variacao geografica, sexual, ontogenetica e individual. Reconheceu-se 10 especies de Alouatta ocorrendo no Brasil, sendo a maioria definida por caracteres discretos, porem diagnosticos. Sao elas: Alouatta caraya (Humboldt, 1812), A. fusca (Geoffroy Saint-Hilaire, 1812), A. clamitans Cabrera, 1940, A. belzebul (Linnaeus, 1766), A. discolor (Spix, 1823), A. ululata Elliot, 1912; A. juara (Linnaeus, 1766), A. macconnelli (Humboldt, 1812), A. puruensis Lonnberg, 1941 e A. nigerrima Lonnberg, 1941. Alouatta macconnelli e A. clamitans mostraram notavel variacao geografica na coloracao da pelagem e algumas variaveis morfometricas (polimorfismo) o que dificultou as definicoes e limites dos taxons. Alouatta belzebul apresentou variacao em mosaico na coloracao da pelagem. Alouatta ululata e A. puruensis foram definidas pela presenca de dicromatismo sexual na pelagem, mas este carater pode ser um artefato e necessita estudos adicionais para corroborar sua validade. Sinonimizou-se Alouatta belzebul mexianae Hagmann, 1908 com A. discolor; e a validade de Alouatta seniculus amazonica Lonnberg 1941, nao foi considerada.

As miíases na região neotropical (identificação, biologia, bibliografia)

Abstract: Data are given on the identification, biology, ecology, hosts, geographical distribution, control, and other aspects of the myiasis-producing flies in the Neotropical Region. The bibliography contains almost 2400 references, mainly related to Cochliomyia (ca. 1170 references), Cuterebridae (with the exception of Dematobia hominis (over 390 references), and to Dermatobia hominis (over 520 references). For Cuterebridae and Cochliomyia the bibliography covers the Americas; for ali other groups it is restricted to the Neotropics.