Abstract：
:Humoral response of paracoccidioidomycosis sera in hamsters with different Venezuelan isolates. Paracoccidioidomycosis (PCM) is a progressive systemic mycosis caused by the fungus Paraccocidioides brasiliensis (Pb), endemic to Venezuela and Latin America. In this study, eight different Venezuelan isolates obtained from patients with PCM, were inoculated intraperitoneally in Syrian hamsters (Cricetus auratus) and studied by immune-serum. Each strain was collected by gently scraping the surface of the culture medium (Sabouraud Dextrose Agar) and suspended in 3 ml of 0.15 M phosphate-buffered saline. The antigen obtained was called Paraccocidioides brasiliensis Crude Antigen (CAP). Immunoblotting results showed that the immune-sera from hamsters recognized at least 3 bands: one over 200 kDa, and two of 80 and 15-20 kDa. This study suggests that IgG anti-CAP can reveal a significant variability in the eight Venezuelan isolates. Sera from 88 infected hamsters were evaluated by ELISA with eight different CAPs and Western blot with CAP 37383. ELISA results showed that, the antigen of the virulent isolate 37383 had the highest percentage (38%) of positivity, while the nonvirulent isolate 1458 had the lowest one (13.6%). Furthermore, scanning densitometry revealed that the isolate 37383 had less bands than the non-virulent isolates. These results suggest that the ELISA test with CAP 37383 can detect circulating antibodies, and that this virulent isolate may be useful for the diagnosis of PCM, and to monitor disease responses to treatments.
journal_name
Rev Biol Tropjournal_title
Revista de biologia tropicalauthors
Spencer LM,Mateu G,Magaldi S,García F,Mata-Essayag Sdoi
10.15517/rbt.v57i3.5471subject
Has Abstractpub_date
2009-09-01 00:00:00pages
505-13issue
3eissn
0034-7744issn
2215-2075journal_volume
57pub_type
杂志文章abstract：:The mangrove forest that fringes the Bon Accord Lagoon measures 0.8 km(2) and is dominated by red mangrove (Rhizophora mangle). This forest forms the landward boundary of the Buccoo Reef Marine Park in Southwest Tobago, and is part of a mangrove-seagrass-coral reef continuum. Biomass and productivity, as indicated by ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2005-05-01 00:00:00
abstract：:Brycon henni, is a native fish from Western Colombia is important as food and in sport fishing, and could be cultured in waters between 18 and 28 degrees C. A previous cytogenetic study in branchial cells indicated different chromosomal complements. Total blood samples were seeded in 4 ml Ham-F12 culture medium, suppl...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2008-12-01 00:00:00
abstract：:Panulirus gracilis is a high valuable lobster species with considerable captures along the tropical Pacific coast. In this study, I present some biological and fishery parameters described after a sample of 843 lobsters, landed in Playa Lagarto from November 2007 to October 2008. From landing records, a total of 74.9%...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2011-06-01 00:00:00
abstract：:The development of the prothallia in nine species of Callipteris Bory (Woodsiaceae), four species of Diplazium, the genus from which Callipteris has been segregated, and one species of Dryoathyrium are studied in this paper. The data obtained are compared with the development of the prothallia of several other genera ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章,评审
doi：
更新日期：2003-03-01 00:00:00
abstract：:From the study of more than 450 specimens of Hydroides and Serpula, 12 species from the Grand Caribbean Region were identified and characterized. Eight species were collected along the shores of the Yucatan Peninsula and five were found in other localities in the Gulf of Mexico, seven others are from Cuba and comments...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2000-12-01 00:00:00
abstract：:The host plants of Cerambycidae (Coleoptera) in the Province of Espinal (Chaquenian Dominion) and the province of Buenos Aires are mainly exotics, cultivated or naturalized, the last ones growing spontaneously and forming little forests. Forty two species of Cerambycidae are reported using these plants and other nativ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：1997-03-01 00:00:00
abstract：:Neotropical aquatic ecosystems have a rich aquatic flora. In this report, we have listed the aquatic flora of various habitats of the upper Paraná River floodplain by compiling data from literature and records of our own continuous collections conducted during the period 2007-2009. Our main purposes were to assess the...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2011-06-01 00:00:00
abstract：:Estimating feline abundance becomes particularly difficult, sometimes impossible, due to their elusive behavior and extensive space requirements. Available techniques are expensive and/or poorly efficient, therefore alternative methods are needed. The objective of this study was to assess the possibility of identifyin...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2008-12-01 00:00:00
abstract：:We studied fruit availability, diet and habitat use by white-lipped peccary (Tayassu pecari) in Corcovado National Park, southwest Costa Rica, from July 1996 to April 1997. The results show that the availability of important fruits for the white-lipped peccary differs between habitats and climatic seasons. Fruit avail...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2001-09-01 00:00:00
abstract：:We surveyed the trophic components in six species of Bahía de Navidad and Bahía de Chamela: Microlepidotus brevipinnis, Caranx caballus, Haemulon flaviguttatum, Lutjanus guttatus, L. argentiventris and Mulloidichthys dentatus. Two main seasonal periods were considered: 1) North Equatorial Counter Current NECC period i...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2010-03-01 00:00:00
abstract：:The study presents an interactive descriptive tool (MONRATE) for calculating and predicting reinfection rates and time of Ascaris lumbricoides following mass chemotherapy. The implementation was based on the theoretical equation published by Hayashi in 1977, for time-prevalence: Y=G [1-(1-X)(N-R)] as modified by Jong-...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v55i3-4.5951
更新日期：2007-09-01 00:00:00
abstract：:Four expeditions were made to Coiba National Park between 1996 and 1998 to characterize this part of the poorly known Panamian Pacific polychaete fauna. The samples were collected by SCUBA diving, either by removing 4 kg blocks of dead coral (Pocillopora sp.) or scraping off 25 x 25 cm quadrats of Telesto multiflora o...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2001-03-01 00:00:00
abstract：:Habitat modifications such as deforestation and the increase of agricultural activities, have led to uncommon faunal interactions. In Colombia, this condition have caused the secondary contact of subspecies of Ramphocelus flammigerus populations from Cauca valley and the Pacific coast; and some specimens with rumps of...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2012-03-01 00:00:00
abstract：:Pine plantations in the tropics are often employed to recondition eroded slopes from mudslides, as the Pinus caribaea plantation that shields the Universidad Simón Bolívar campus in Caracas (Venezuela). However, mismanagement of this plantation has led to its rapid degradation. The best option to maintain the protecti...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v64i2.19632
更新日期：2016-06-01 00:00:00
abstract：:Huperzia brevifolia is one of the dominant species of the genus Huperzia living in paramos and superparamos from the Colombian Andes. A detailed study of the sporangium's ontogeny and sporogenesis was carried out using specimens collected at 4200m above sea level, in Parque Natural Nacional El Cocuy, Colombia. Small p...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2009-12-01 00:00:00
abstract：:Puerulus settlement of the western Atlantic spiny lobster, Panulirus argus, was monitored using modified Witham collectors from December 1996 to March 1998 at seven sites around St. Thomas, U.S. Virgin Islands. A total of 605 pueruli were collected from 553 samples for a catch per unit effort (CPUE) for all sites of 1...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2003-06-01 00:00:00
abstract：:In Costa Rica, the region of Rio Macho is a highly fragmented landscape with imminent risk of landslides. This area, which provides important environmental services, has been partially recovered to its original forest through intentional reforestation with exotic species or natural regeneration after abandonment. The ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2012-12-01 00:00:00
abstract：:Amazonian forests are a vast storehouse of biodiversity and function as carbon sinks from biomass that accumulates in various tree species. In these forests, the taxa with the greatest contribution of biomass cannot be precisely defined, and the representative distribution of Myristicaceae in the Peruvian Amazon was t...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2015-03-01 00:00:00
abstract：:Biomarkers are a widely applied approach in environmental studies. Analyses of cholinesterase (ChE), glutathione S-transferase (GST) and lipid peroxidation (LPO) are biomarkers that can provide information regarding early effects of pollutants at different biochemical levels on an organism. The aim of this study was t...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v60i1.2769
更新日期：2012-03-01 00:00:00
abstract：:Jaguars (Panthera onca) are the largest predator in lowland forests of Amazonia but there have been few studies on their occurrence and activity in such forests. Here, we used camera traps to document the occurrence and activity of jaguars within a local area (-650ha) of lowland forest of Eastern Ecuador, over two sam...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v62i2.11115
更新日期：2014-06-01 00:00:00
abstract：:Arecaceae is a family rich in species and provides resources for the subsistence of human groups in the tropical regions. The aim of this work was to assess the richness, diversity, composition, and use patterns of the family Arecaceae in three communities of the Medio Atrato, Chocó, Colombia, in order to obtain usefu...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2013-12-01 00:00:00
abstract：:In India, freshwater environments are experiencing serious threats to biodiversity, and there is an urgent priority for the search of alternative techniques to promote fish biodiversity conservation and management. With this aim, the present study was undertaken to assess the fish biodiversity within and outside a riv...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v61i1.10942
更新日期：2013-03-01 00:00:00
abstract：:Abstract: Histology of gill, liver and kidney in juvenile fish Colossoma macropomum exposed to three temperatures. Water temperature is an important factor that affects growth and antioxidant enzyme activities in fish, and when adverse, it may trigger diseases in fish populations. C. macropomum is a freshwater neotrop...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2013-06-01 00:00:00
abstract：:Production and condition index of a turkeywing (Arca zebra) population were studied from August 1984 to August 1985 in Pariche, Cariaco Gulf, Venezuela. Production was studied through bimonthly collections using a method designed for populations with continuous reproduction and indistinguishable age classes. The popul...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2001-06-01 00:00:00
abstract：:The karyotypes of the purple snails Plicopurpura pansa (Gould, 1853) and P. columellaris (Lamarck, 1816) were established from 17 and 13 adults, respectively; and from eight capsules with embryos of P. pansa. In P. pansa were counted 59 mitotic fields in the adults and 127 in embryos; and 118 fields in P columellaris....
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2007-09-01 00:00:00
abstract：:Schistosomiasis remains a disease of major global public health concern since it is a chronic and debilitating illness. The widely distributed Schistosoma mansoni that causes intestinal schistosomiasis represents a great threat. Its world-wide distribution is permitted by the broad geographic range of the susceptible ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v64i4.21668
更新日期：2016-12-01 00:00:00
abstract：:Age and growth of Nile tilapia (Oreochromis niloticus) were determined using 1039 specimens collected in a tropical shallow lake of Mexico, from January to December 1993. Standard length of females ranged from 9.0 to 16.5 cm and males from 8.9 to 14.8 cm. The standard length-weight relationships for all individuals wa...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v56i2.5630
更新日期：2008-06-01 00:00:00
abstract：:Structural hemoglobin variants are reviewed for Iberoamerica; specially in Latin America, they reflect racial composition and geographic origin. Latin American genetic composition is a function of ethnic composition in each country (mainly Africans and Spaniards, and the "indians" or native peoples). For this reason t...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：1993-12-01 00:00:00
abstract：:The arguments presented by Espinoza et al. in their paper "Relationship of genetically modified crops with the environment and health of the Costa Rican human population" published in this journal (Rev. Biol. Trop. 52: 727-732, 2004) are questioned and refuted. The arguments are confronted with evidence offered by sci...
journal_title：Revista de biologia tropical
pub_type： 评论,杂志文章
doi：
更新日期：2007-06-01 00:00:00
abstract：:Seed dispersal is a fundamental process in plant ecology and is of critical importance for the restoration of tropical communities. The lands of the Cabo Rojo National Wildlife Refuge (CRNWR), formerly under agriculture, were abandoned in the 1970s and colonized mainly by non-native tree species of degraded pastures. ...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2014-09-01 00:00:00
