Abstract:
:Nutrients and chlorophylls concentrations, as well as salinity, temperature and Secchi disk depth were determined from November 1999 to April 2000, at three stations and two depths, at Gandoca lagoon, Gandoca-Manzanillo National Wildlife Refuge, Limón, Costa Rica. Salinity profiles indicated that the lagoon was a salt wedge estuary with a partially mixed region near the mouth. No processes of eutrophication were found. The distribution and abundance of nutrients and chlorophylls showed a slight influence of continental water and water circulation patterns in the lagoon. A preliminary study was done in order to analyze the presence of 20 organochlorated and organophosphorated pesticides along the Gandoca lagoon in February 2000. None of the pesticides were detected by the analysis of residues from liquid-liquid extractions. The absence of the pesticides may be due to the fact that they did not reach the lagoon or, if they did, they were washed away by the strong rains during the sampling period.
journal_name
Rev Biol Tropjournal_title
Revista de biologia tropicalauthors
Coll M,Cortés J,Sauma Dsubject
Has Abstractpub_date
2004-12-01 00:00:00pages
33-42eissn
0034-7744issn
2215-2075journal_volume
52 Suppl 2pub_type
杂志文章abstract::In Neotropical wet forests several species of omnivorous, resource-defending ants, live and forage in close proximity to one another. Although the forest floor is heterogeneous in microhabitat and food quantity, little is known about the impact of microhabitat and food variation upon resource monopoly among ants. We i...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
abstract::There is increasing evidence that large-bodied primates play important roles as seed dispersers and in the maintenance of tree diversity in forest ecosystems. In this study we compared forest regeneration at two sites with differing primate abundances in the Ecuadorian Chocoan rainforest. We predicted: (1) significant...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v64i2.18415
更新日期:2016-06-01 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::A monovalent antivenom was produced by immunizing two horses with venom of the pit viper Bothrops asper (Ophidia: Viperidae). Although development of the immune response against four toxic and enzymatic activities of the venom was similar in both horses during the first two thirds of the immunization schedule, antibod...
journal_title:Revista de biologia tropical
pub_type: 杂志文章,评审
doi:
更新日期:1988-11-01 00:00:00
abstract::The bathymetry of Coco's Island (UNESCO Natural and Cultural World Patrimony), located approximately 500 km from the Pacific coast of Costa Rica, is not well known. It has a high marine biodiversity and also represents a meeting site for many species traveling throughout the Pacific Ocean. The insular shelf is irregul...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2001-12-01 00:00:00
abstract::The structural and ultrastructural features of gonads from endemic Mexican fish have received scarce attention. This study describes the histological and ultrastructural characteristics of oocyte from Chirostoma humboldtianum. The ovary is asynchronic, and as such, most phases of oocyte development are found in the sa...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2008-09-01 00:00:00
abstract::An avirulent T. gondii strain isolated from a owl (Glaucidium brasilianum) produces randomly distributed cysts in the brain of mice which can survive to inocula as high as 1000 oocysts. Cysts appeared for the first time after 15 days of infection. Regarding to humoral immunity development due to our TCR-2 strain, dete...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:1990-11-01 00:00:00
abstract::Marine bivalves are a very important food source for human consumption, and species that has not been of traditional use as a fishery resource are gaining interest. Seasonal variation in proximate composition, condition index and energy or caloric content of the mussel Tagelus peruvianus were studied in the Gulf of Ni...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2011-12-01 00:00:00
abstract::Lichenized fungi or lichens are organisms that have been little studied in the tropics and which distribution is affected by microenvironmental factors and substrate characteristics. The present study aimed to identify phorophyte specificity and microenvironmental preferences of corticolous lichens in five phorophyte ...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2012-06-01 00:00:00
abstract::Life history and recruitment information of tropical trees in natural populations is scarce even for important commercial species. This study focused on a widely exploited Neotropical canopy species, Pachira quinata (Malvaceae), at the southernmost, wettest limit of its natural distribution, in the Colombian Amazonia....
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2011-06-01 00:00:00
abstract::Centrostephanus coronatus reaches a density of 0.06 individuals/m2 in shallow reef waters in Parque Nacional Marino Ballena, Pacific of Costa Rica, in the same habitat occupied by the urchin Diadema mexicanum. It is the fourth species of diadematoid urchins reported for Costa Rican and a first new report for Central A...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2004-12-01 00:00:00
abstract::The fertility life table of Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) preying either on Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) caterpillars or on alternative prey Tenebrio molitor L. (Coleoptera: Tenebrionidae) under greenhouse conditions (30 +/- 5 degrees C, 61 +/- 23% RH) were studied. The...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2002-03-01 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::Breast cancer is first in incidence and mortality among Costa Rican women. In 2011 there is a projected 1 071 new cases. We selected 116 patients diagnosed with breast cancer and family history of breast cancer. A detailed family history and epidemiology data was obtained from each patient and a blood sample was proce...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2012-12-01 00:00:00
abstract::The reproductive season of tilapia was studied by monthly samplings at Emiliano Zapata dam, Morelos State, Mexico. From February 1999 through February 2000 a sample of 50 fish was taken from the commercial catch (castnet, 6.5 cm of mesh size). The observed sex ratio was 1:1.29 (females:males) (chi(2)=10.26; p<0.05). T...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v53i3-4.14666
更新日期:2005-09-01 00:00:00
abstract::Liolaemus belongs to the Eulaemus subgenus, that is included in the Liolaemus montanus group or section, and is distributed in Argentina, Bolivia, Chile and Peru. The species members of this clade inhabit arid and high altitude environments, usually above 2800 m, and have a strong tendency to herbivory and a viviparou...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2013-12-01 00:00:00
abstract::A list of the species and taxa of some pelagic animals from a tropical upwelling region, based on collections made off the coast of Costa Rica is presented. The list includes a total of 224 species, 53 genera and 11 subspecific forms in Cnidaria, Annelida, Mollusca, Artropoda (Crustacea), Chaetognatha and Pisces. ...
journal_title:Revista de biologia tropical
pub_type: 杂志文章,评审
doi:
更新日期:1996-08-01 00:00:00
abstract::A new genus and two species of Melolonthinae from Honduras and Nicaragua are described. A phylogenetic analysis, carried out using morphological characters, suggests that Catrachia is a strongly supported monophyletic group. Catrachia is therefore established as a new genus, constituted by two new species, Catrachia m...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v54i2.13910
更新日期:2006-06-01 00:00:00
abstract::Turbinella angulata and Busycon perversum are two marine gastropods that support the 90% of conch fisheries in the Gulf of Mexico, nevertheless there is no information available to support a management strategy for both species. The aim of this work was to obtain preliminary fishery information to promote management a...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2013-03-01 00:00:00
abstract::The coastal lagoons of Veracruz, Gulf of Mexico, include a great variety of biological resources. These resources, especially fish communities, have been barely described and that require more ecological studies. With this aim, this investigation analyzed the spatial and temporal variation of diversity, abundance and ...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2014-03-01 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::Thirteen representatives of Myxariaceae sensu Jülich: Heterochaetella brachyspora (Bourdot & Galzin) Luck-Allen, Myxarium atratum (Peck) Ginns & Lefebvre, M. granulum Hauersl., M. laccatum (Bourdot & Galzin) Reid, M. mesomorphum (Bourdot & Galzin) Haursl., M. mesonucleatum Kisim., Oberw. & L.D. Gómez nov. sp., M. subs...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
abstract::In spite of their economic importance, coral reef communities of the world are rapidly decreasing, and an adequate management planification is needed. The benthic and fish communities of Dos Mosquises Sur and Madrizqui at Los Roques National Park, and Caiman and Cayo Norte at Morrocoy National Park, in Venezuela were ...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v58i1.20023
更新日期:2010-05-01 00:00:00
abstract::Lotic systems, in particular temporal streams, represent an important proportion of continental waters, but are poorly studied. This is particularly clear in central Mexico, where temporal streams are abundant and remain poor studied despite their great potential for high diversity and the important energy within thes...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2014-04-01 00:00:00
abstract::The basic ecology of seagrass beds was investigated by comparing biomass, productivity and density of Thalassia testudinum (turtle grass) at three sites: Puerto Vargas, Punta Cahuita and Rio Perezoso, in Cahuita National Park, Limón, Costa Rica, over a two month period (March-April 1999). Above ground biomass, density...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2001-12-01 00:00:00
abstract::Cattleya trianae is an endemic species from the tropical rainforest in the Colombian Andes. Its survival is currently threatened due to habitat loss and commercial overexploitation. This study evaluates ten substrates, some organic (pine bark, coconut fiber and wood shavings), some inert icopor (polystyrene foam), veg...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v55i2.6045
更新日期:2007-06-01 00:00:00
abstract::The genus Histioneis (=Parahistioneis) contains an excessive number of poorly described species, often based on the observation of a single specimen and ignoring the intraspecific variability. In order to investigate the validity of the species and to suggest synonyms, the original illustrations of all known species o...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v55i2.6025
更新日期:2007-06-01 00:00:00
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::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::Plant regeneration from seven-week-old callus cultures derived from mature embryos of several indica rice cultivars was achieved with frequencies of morphogenic calli from 10 to 47%. Three media were tested both for callogenesis and plant regeneration. For 3 of the 7 genotypes examined, the best combination of media f...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:1997-03-01 00:00:00