Revista brasileira de biologia最新文献

{"title":"Algas planctônicas de um lago artificial do Jardim Botânico Chico Mendes, Goiânia, Goiás: florística e algumas considerações ecológicas","authors":"I. S. Nogueira, N. C. Leandro-Rodrigues","doi":"10.1590/S0034-71081999000300003","DOIUrl":"https://doi.org/10.1590/S0034-71081999000300003","url":null,"abstract":"This paper aims to study the composition and some ecological aspects of the phytoplancton of one of the artificial lakes located at \"Chico Mendes\" Botanical Garden, Goiânia, Goias, midwest region of Brazil. The floristic and some ecological aspects were analised. The samples were collected during the following periods: dry, begining of the rainy season and rainy. Besides the phytoplancton, some abiot parameter were mensured (pH, oxygen, temperature, nitrate, nitrite, alkalinity, chlorite, turbity, BDO e precipitation), 77 taxa belonging to taxonomic classes were recognized and 37 taxa was recorded for the first time to State of Goias. Chlorophyceae was the most representative class. During rainy period the greatest richness was registered, with 11 abundant taxa. In contrast, at the begining of the rainy season the highest phytoplanktonic density was observed (13,590 ind/ml) with 18 abundant taxa, in special Nephrochlamys allantoidea (Chlorophyceae) and Phacus dangeardi (Euglenophyceae). The water was warm (24o-26o), lightly acid through alkalin and meso to oligotrophic.","PeriodicalId":76429,"journal":{"name":"Revista brasileira de biologia","volume":"11 1","pages":"377-395"},"PeriodicalIF":0.0,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S0034-71081999000300003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67176080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variação espacial e temporal de bagres marinhos (Siluriformes, Ariidae) na Baía de Sepetiba, Rio de Janeiro","authors":"Márcia Cristina Costa de Azevedo, F. Araújo, Antonio Miranda da Cruz-Filho, I. Gomes, André Luiz Machado Pessanha","doi":"10.1590/S0034-71081999000300009","DOIUrl":"https://doi.org/10.1590/S0034-71081999000300009","url":null,"abstract":"Marine catfishes (Ariidae) are abundant fishery resource in the Sepetiba Bay, Rio de Janeiro State (Lat. 22o54’-23o04’S; Long. 43o34’-44o10’W), that is considered an important rearing area to a great number of juvenile fish. Artisanal fisheries are important economic activity in the region. Spatial and seasonal distribution and relative abundance of marine catfish, based on the number and weight of fish catched per sample (Catch per Unit Effort = CPUE) were assessed based on 151 otter trawl sampling in seven sampling sites in the Sepetiba Bay, between July 1993 and June 1996. For spatial comparisons, the study area was devised in an inner zone, located in the inner Bay and an outer zone, near to the sea limit. Environmental parameters of surface and bottom water temperature and salinity, transparency and depth were recorded at each sampling. A spatial variation pattern, assessed by multivariate methods, is shown with higher depths and transparencies in the outer bay and lower in the inner bay, while salinity seems to decrease slightly toward the inner bay. Only temperature showed seasonal variation. Five marine catfish species were recorded in the following order of decreasing numerical abundance: Genidens genidens (Valenciennes, 1839), Cathorops spixii (Agassiz, 1829) Sciadeichthys luniscutis (Valenciennes, 1840), Netuma barba (Lacepede, 1803) and Bagre marinus (Mitchill, 1814).The top four abundant marine catfish occur in higher abundance in the inner Bay, with indication of spatial separation within this area. G. genidens was abundant over all sampling sites in the inner Bay, while C. spixii showed a narrower distribution in this area. N. barba concentrated near to Guandu River estuary, and S. luniscutis showed an ample distribution over all the Bay. Seasonally was not marked for all species. Strategies of spatial separation may be explaining the coexistence of marine catfish in high abundance in the Sepetiba Bay, which is used as fish rearing area mainly due the low depths and transparencies, favorable conditions to their early life cycle development.","PeriodicalId":76429,"journal":{"name":"Revista brasileira de biologia","volume":"59 1","pages":"443-454"},"PeriodicalIF":0.0,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S0034-71081999000300009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67176451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proposta de modelo cinético da degradação de laminados de madeiras em ambientes aquático e terrestre","authors":"F. Aprile, W. Delitti, I. Bianchini","doi":"10.1590/S0034-71081999000300015","DOIUrl":"https://doi.org/10.1590/S0034-71081999000300015","url":null,"abstract":"A kinetic model for wood decomposition is proposed based on experimental data on the decomposition of wood from 12 species.The model takes into account the different decay coeficients for labile and recalcitrant compounds, in both terrestrial and aquatic ecosystems. It was verifed that: 1. the oxidation process of recalcitrant fractions are the main pathway for mineralization, because the leaching and/or mineralization of the labile compounds is low (less than 15%); 2. the aquatic environment favour the decay processes and the increase of mineralization coefficients of recalcitrant fractions.","PeriodicalId":76429,"journal":{"name":"Revista brasileira de biologia","volume":"56 1","pages":"493-501"},"PeriodicalIF":0.0,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67176560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New records of larval host plants for Ithomiinae butterflies (Nymphalidae).","authors":"F. A. Costa","doi":"10.1590/S0034-71081999000300010","DOIUrl":"https://doi.org/10.1590/S0034-71081999000300010","url":null,"abstract":"Seventeen new records of larval hostplants are given for Ithomiinae butterflies (Lepidoptera: Nymphalidae) in southeastern Minas Gerais, and one in Brasilia, DF. At the present state of knowledge, generalizations about larval feeding habits of these insects may be premature.","PeriodicalId":76429,"journal":{"name":"Revista brasileira de biologia","volume":"59 1","pages":"455-459"},"PeriodicalIF":0.0,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S0034-71081999000300010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67176572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tamanho corporal em populações naturais de Didelphis (Mammalia: Marsupialia) do Sul do Brasil","authors":"Nilton C. Cáceres, E. Monteiro-Filho","doi":"10.1590/S0034-71081999000300011","DOIUrl":"https://doi.org/10.1590/S0034-71081999000300011","url":null,"abstract":"Nowaday, data about marsupial biometry are poorly available in Brazil, considering the high richness of marsupial species in this country. Then, relationships of body size and sexual dimorfism of natural populations of the white-eared opossum, Didelphis albiventris, and of the common opossum, D. marsupialis, were studied in two mixed forests of Curitiba, southern Brazil, between February 1995 and February 1997. As a result, there was a strong relationship among the teeth emergence, weight and several body measures obtaIned from opossums. Hence, measures as the head length may be used to estimate other measures of the body. Sexual dimorfism was also verified in relation to the body size and the head shape for the common opossum. Adult females of the white-eared opossum proved to be bigger than adult females of the common opossum. Besides, some individuals of both species had an increase in their weight during the autumn probably to support the low food available’ season. However, the white-eared opossum usually storages more fat that the common opossum in any season. Therefore, the adaptative strategies of both species revealed different among themselves in southern Brazil and probably are results of different life histories, despite their related kinship.","PeriodicalId":76429,"journal":{"name":"Revista brasileira de biologia","volume":"59 1","pages":"461-469"},"PeriodicalIF":0.0,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S0034-71081999000300011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67176636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Entropia, informação e estresse hídrico em Eucaliptus camadulensis in vitro","authors":"G. M. Souza, N. Nova, A. N. Gonçalves","doi":"10.1590/S0034-71081999000300012","DOIUrl":"https://doi.org/10.1590/S0034-71081999000300012","url":null,"abstract":"The aim of this was to explore a new approach on plant development through the interpretation of their entropic states. The Eucaliptus camadulensis entropic states, in vitro cultivated under water deficit conditions, were evaluated through the dry matter production utilizing the Clausius and Shannon functions. The plants cultivated under water deficit followed the thermodynamic second law like a dissipative structure. Whereas the entropic production increased the leaf tissues diffrentiation decreased, there was a reduction of the plant organization, mainly at the -1.5 MPa osmotic potencial. The ideal thermodynamic efficiency for the analised material was between 0.57% and 0.62%.","PeriodicalId":76429,"journal":{"name":"Revista brasileira de biologia","volume":"59 1","pages":"471-476"},"PeriodicalIF":0.0,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S0034-71081999000300012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67176261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estudo comparativo de métodos de amostragem de comunidades de Costão","authors":"C. M. Sabino, R. Villaça","doi":"10.1590/S0034-71081999000300005","DOIUrl":"https://doi.org/10.1590/S0034-71081999000300005","url":null,"abstract":"This study compares three sampling methodologies of rocky shore communities: visual estimation, point intercept quadrats and destructive sampling. Visual estimation was performed in two sizes of sampling device and, point intercept quadrats was done with different numbers of marked dots. The sampling took place on the rocky shore of Forno beach, Buzios, RJ, in two different algae belts; one whose the landscape is characterized by Amphiroa sp., the other, Sargassum furcatum was the most conspicuous species. The data were analyzed by ANOVA and Kruskal-Wallis tests. Number of species, total percent cover, diversity and evenness indices were the variables used. The results shown that in general the methods compared were not statistically different one from the other in this community. There were significative differences between the methods when comparison was made between non-destructive and destructive sampling. However, smaller areas of sampling devices and fewer intercept points decreased the sampling power in respect of sampling species richness. All of the methods studied were considered similar in concern of total cover index and of diversity and evenness indices, with some exceptions. Present data are useful only for rocky communities with similar profiles. The choice of method must be made in regard of each situation.","PeriodicalId":76429,"journal":{"name":"Revista brasileira de biologia","volume":"59 1","pages":"407-419"},"PeriodicalIF":0.0,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S0034-71081999000300005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67176665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of gallery forests in the distribution of cerrado mammals","authors":"M. Johnson, P. M. Saraiva, D. Coelho","doi":"10.1590/S0034-71081999000300006","DOIUrl":"https://doi.org/10.1590/S0034-71081999000300006","url":null,"abstract":"O bioma dos cerrados contem uma rica comunidade de mamiferos, com influencia das matas Amazonica e Atlântica, principalmente observada nas matas de galeria. Neste trabalho, por revisao da literatura, foi demonstrado que a comunidade de mamiferos nao voadores das matas de galeria no cerrado e distinta das comunidades de mamiferos de qualquer outro tipo de fisionomia do cerrado. Alem disso, as matas de galeria contem duas vezes mais especies comuns as matas umidas que as outras fisionomias do cerrado (sensu latu) reunidas. As matas de galeria parecem fornecer habitat dentro do cerrado (sensu latu) para mamiferos das matas umidas, aumentando a biodiversidade deste bioma. Assim, as matas de galeria podem funcionar como corredores de dispersao para estas especies.","PeriodicalId":76429,"journal":{"name":"Revista brasileira de biologia","volume":"59 1","pages":"421-427"},"PeriodicalIF":0.0,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1590/S0034-71081999000300006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67176219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative evaluation of the susceptibility of cultivated fishes to the natural infection with myxosporean parasites and tissue changes in the host","authors":"M. L. Martins, V. D. Souza, J. Moraes, F. R. Moraes, A. J. Costa","doi":"10.1590/S0034-71081999000200010","DOIUrl":"https://doi.org/10.1590/S0034-71081999000200010","url":null,"abstract":"The purpose of the study was to evaluate the susceptibility of 4 important cultivated fishes to sporozoan parasites. Fishes were collected bimonthly from a pond for a period of 1 year. Myxobolus colossomatis and Henneguya piaractus were found in the internal organs and gills, respectively. The combined incidence of parasitism by both myxozoa was 97.3% in pacu (Piaractus mesopotamicus), 33.3% in hybrid tambacu (Piaractus mesopotamicus x Colossoma macropomum), 5.6% in tambaqui (Colossoma macropomum) and 0% in carp (Cyprinus carpio). Pacu was the most susceptible fish and was parasitized 79.2% in the gills, 66.7% in the kidney and 50% in the spleen. Histopathological evaluation of the gills showed hemorrhages, inflammatory reaction with mononuclear cells and fibroblasts and hyperplasia of basal and goblet cells.","PeriodicalId":76429,"journal":{"name":"Revista brasileira de biologia","volume":"59 1","pages":"263-269"},"PeriodicalIF":0.0,"publicationDate":"1999-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67175842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fitoplâncton de um reservatório eutrófico (lago Monte Alegre), Ribeirão Preto, São Paulo, Brasil","authors":"L. H. S. Silva","doi":"10.1590/S0034-71081999000200012","DOIUrl":"https://doi.org/10.1590/S0034-71081999000200012","url":null,"abstract":"The study aims at presenting the phytoplankton of a small eutrophic reservoir, located in the Southeast of Brazil, based in samples fortnightly collected from April of 1988 to March of 1989 from one station located at the centre of the limnetic region. Ninety three species were identified, 9 varieties, 5 taxonomic forms, 9 taxa were determined at generic level and 3 were listed in their respective classes, in a total of 119 taxa belonging to 9 taxonomic classes (13 Cyanophyceae, 55 Chlorophyceae, 15 Zygnemaphyceae, 14 Euglenophyceae, 5 Bacillariophyceae, 3 Xanthophyceae, 6 Chrysophyceae, 4 Cryptophyceae e 4 Dinophyceae). It was observed a considerable complexity in the floristic composition in the Lake Monte Alegre, as registered in relation to other tropical lakes and reservoirs, with a bigger dominance of the green algae (59%). The phytoplankton species was used as one of the aspects for the trophic characterization of the environment.","PeriodicalId":76429,"journal":{"name":"Revista brasileira de biologia","volume":"59 1","pages":"281-303"},"PeriodicalIF":0.0,"publicationDate":"1999-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67176056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}