Age and growth of the tilapia, Oreochromis niloticus (Perciformes: Cichlidae) from a tropical shallow lake in Mexico.

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

authors： Isasi-Catalá E,Barreto GR

更新日期：2008-12-01 00:00:00

abstract：:Abstract: The phenotypic structure within and between plant populations is generally influenced by their distribution patterns in space and time; therefore, the study of their divergence is a central issue for the understanding of their microevolutive processes. We boarded the hypothesis that three populations of Espe...

journal_title：Revista de biologia tropical

authors： Benavides F,Burbano J,Burbano D,Prieto R,Torres C

更新日期：2010-12-01 00:00:00

abstract：:The octopus (Octopus maya) is one of the most important fish resources in the Mexican Gulf of Mexico with a mean annual yield of 9000 ton, and a reasonable number of jobs created; O. maya represents 80% of the total octopus catch, followed by Octopus vulgaris. There are two artisanal fleets based on Octopus maya and a...

journal_title：Revista de biologia tropical

authors： Arreguín-Sánchez F,Solís-Ramírez MJ,González de la Rosa ME

更新日期：2000-06-01 00:00:00

abstract：:A new species, Cirripathes secchini (Cnidaria: Antipatharia) from the Abrolhos area (Bahia, Brazil) is described and constitutes the first record to this genus from Brazil. Two other species (Antipathes hirta, first record from the Southwestern Atlantic; and Antipathes fernandezi, first record from the Atlantic Ocean)...

journal_title：Revista de biologia tropical

authors： Echeverría CA

更新日期：2002-09-01 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

authors： Flores Ortega JR,Godínez Domínguez E,Rojo Vázquez JA,Corgos A,Galván Piña VH,Sansón González G

更新日期：2010-03-01 00:00:00

abstract：:The contributions published in Revista de Biología Tropical in the area of Biomedical Sciences are reviewed in terms of number of contributions and scope of research subjects. Biomedical Sciences, particularly Parasitology and Microbiology, constituted the predominant subject in the Revista during the first decade, re...

journal_title：Revista de biologia tropical

authors： Gutiérrez JM

更新日期：2002-09-01 00:00:00

abstract：:The floristic composition and structure of a premontane moist forest remnant were studied in the El Rodeo Protected Zone, Central Valley of Costa Rica. Three one-hectare plots were established in the non-disturbed forest, and all trees with a diameter at breast height (dbh) of 10 cm or greater were marked, measured an...

journal_title：Revista de biologia tropical

authors： Cascante A,Estrada A

更新日期：2001-03-01 00:00:00

abstract：:Rhizosphere microbial communities are important for phytoremediation, plant nutrition, health and metabolism. Many factors, including plant species, pH and nutritional factors influence rhizosphere micro- biology. In this study, we analysed the effects of different forms of nitrogen on the structures of rhizosphere ...

journal_title：Revista de biologia tropical

authors： Fu M,Zheng L

更新日期：2016-03-01 00:00:00

abstract：:Critical evaluation of terminology use in ecology is important to avoid using jargon that helps little to facilitate communication. Here we reply to Monge-Najera’s comment on the use of the terms ensemble and assemblage, we argue for the use of the words ensamble and ensamblaje in Spanish. In addition, both terms have...

journal_title：Revista de biologia tropical

authors： Ramírez A,Gutiérrez-Fonseca PE

更新日期：2016-06-01 00:00:00

abstract：:This paper is the first taxonomic account of the hydroid orders Anthoathecatae and Leptothecatae from the Caribbean and Pacific coast of Costa Rica. All specimens are currently stored at the reference collection of the Museo de Zoología, Escuela de Biología, Universidad de Costa Rica. Sixteen hydroid species are recor...

journal_title：Revista de biologia tropical

authors： Kelmo F,Vargas R

更新日期：2002-06-01 00:00:00

abstract：:We observed the mating behavior of the neck-banded snake Scaphiodontophis annulatus (a common species of colubrid in the South Pacific of Costa Rica) in the pre-montane wet forest of Las Cruces Biological Station (San Vito de Java, Costa Rica). Three S. annulatus were observed during courtship between 10-12 AM in a pa...

journal_title：Revista de biologia tropical

authors： Sasa M,Curtis S

更新日期：2006-06-01 00:00:00

abstract：:Two types of inclusion bodies were consistently observed under light microscopy in bean (Phaseolus vulgaris) leaf tissue infected with Bean rugose mosaic virus (BRMV), a species of the genus Comovirus, family Comoviridae. One type consisted of vacuolated inclusions found mainly in the cytoplasm of epidermal cells. The...

journal_title：Revista de biologia tropical

authors： Rivera C,Carmona LM

更新日期：2000-12-01 00:00:00

abstract：:Long-term, high accuracy seawater temperature data sets are essential in studies assessing environmental changes that may alter coral reef communities. Located at the approximately the same latitude, the subsurface seawater temperature (S3T) off Discovery Bay, Jamaica (DBJ) and the U.S. Virgin Islands (USVI) had the s...

journal_title：Revista de biologia tropical

authors： Quinn NJ,Kojis BL

更新日期：2003-06-01 00:00:00

abstract：:Rice fields occupy large areas in Northeastern Argentina, and in Corrientes this widespead activity has become a feature in the landscape, as it is one of the main producing provinces. The aquatic Coleoptera is part of the fauna inhabiting these artificial environments but little is known about this group in irrigated...

journal_title：Revista de biologia tropical

authors： Gómez Lutz MC,Kehr AI,Fernández LA

更新日期：2015-09-01 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

authors： Gutiérrez JM,Chaves F,Rojas E,Elizondo J,Avila C,Cerdas L

更新日期：1988-11-01 00:00:00

abstract：:A study of the 1963-1965 eruptions of the Irazú volcano (Costa Rica) showed that the ashes altered the ecological conditions of a great number of insects. Experiments suggest a mechanical action of the abrasive particles on the epicuticle, making it permeable, and thus accelerating dehydration. Other insects, such as ...

journal_title：Revista de biologia tropical

authors： Wille A,Fuentes G

更新日期：1975-12-01 00:00:00

abstract：:The food habits of Trachinotus paitensis, in San Ignacio Lagoon B.C.S., Mexico, were investigated. We observed that T. paitensis is carnivorous, feeding mainly on benthic invertebrates (the gastropods Anachis spp., Bittium spp., and the crustacean larvae). We concluded that T. paitensis is an opportunist predator that...

journal_title：Revista de biologia tropical

authors： Cruz Escalona VH,Abitia Cárdenas LA

更新日期：2004-03-01 00:00:00

abstract：:The aqueous extract and the essential oil of Satureja viminea (Lamiaceae) were tested. General physiologic effects were assessed through the Hippocratic screening test. Non fasted female Sprague Dawley rats were utilized and 250, 500, 750 and 1000 mg/kg doses were used. Two animals were used for each dosage level and ...

journal_title：Revista de biologia tropical

authors： Suárez A,Echandi MM,Ulate G,Cicció JF

更新日期：2003-03-01 00:00:00

abstract：:It is located 650m above sea level along the boundary between the North Caribbean and Pacific slopes, near the Southern end of the volcanic Guanacaste mountain range. In the early 1980s the lake's main outlet was dammed and the outflow was diverted into Arenal Reservoir. Lake Cote was first studied in 1990-1991, and l...

journal_title：Revista de biologia tropical

authors： Umaña G

更新日期：2014-06-01 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

authors： López DD,Vásquez Palacio G,Ruiz Cortés T,Olivera Angel M

更新日期：2008-12-01 00:00:00

abstract：:Tagosodes orizicolus Muir (Homoptera: Delphacidae), the endemic delphacid species of tropical America carries yeast-like symbiotes (YLS) in the abdominal fat bodies and the ovarial tissues, like other rice planthoppers of Asia. These YLS are obligate symbiotes, which are transmitted transovarially, and maintain a mutu...

journal_title：Revista de biologia tropical

authors： Xet-Mull AM,Quesada T,Espinoza AM

更新日期：2004-09-01 00:00:00

abstract：:Simplification of natural habitats leads to a modification of the community associated with a host plant. Pequi trees (Caryocar brasiliense) are common to find in central Brazil, especially in the middle of monocultures, such as soy, corn, pasturelands or Eucalyptus plantations. On this scenario we hypothesized that h...

journal_title：Revista de biologia tropical

authors： Neves FS,Braga RF,Araújo LS,Campos RI,Fagundes M

更新日期：2012-09-01 00:00:00

abstract：:Punta Lara Natural Reserve shelters the relict of the Southernmost riparian forest in the world, where the flora is threatened by the anthropic expansion and by the introduction of exotic species. In this area the ferns and lycophytes grow in particular environments as marshland, grassland and marginal forest. The aim...

journal_title：Revista de biologia tropical

authors： Giudice GE,Ramos Giacosa JP,Luján Luna M,Yañez A,de la Sota ER

更新日期：2011-09-01 00:00:00

abstract：:A new species of Hyalinobatrachium of the fleischmanni group, H. mondolfii, is described from the Orinoco delta floodplains in Venezuela. This new species can be distinguished from other congeners by the following combination of characters: parietal peritoneum clear, pericardium white, visceral and hepatic peritoneum ...

journal_title：Revista de biologia tropical

authors： Celsa Señaris J,Ayarzagüena J

更新日期：2001-09-01 00:00:00

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 fro...

journal_title：Revista de biologia tropical

authors： Spencer LM,Mateu G,Magaldi S,García F,Mata-Essayag S

更新日期：2009-09-01 00:00:00

abstract：:Fatty acids have been successfully used to trace the transfer of organic matter in coastal and estuarine food webs. To delineate these web connections, fatty acid profiles were analyzed in species of microbes (Azotobacter vinelandii, and Lactobacillus xylosus), prawns (Metapenaeus monoceros and Macrobrachium rosenberg...

journal_title：Revista de biologia tropical

authors： Alikunhi NM,Narayanasamy R,Kandasamy K

更新日期：2010-06-01 00:00:00

abstract：:Migrating humpback whales from northern and southern feeding grounds come to the tropical waters near Osa Peninsula, Pacific of Costa Rica, to reproduce and raise their calves. Planning effective marine protected areas that encompass humpback critical habitats require data about which oceanographic features influence ...

journal_title：Revista de biologia tropical

authors： Oviedo L,Solís M

更新日期：2008-06-01 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

authors： Torres-García U,Pérez-Valladares CX,Herrería-Diego Y,Pineda-López RF

更新日期：2014-04-01 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

authors： Cróquer A,Debrot D,Klein E,Kurten M,Rodríguez S,Bastidas C

更新日期：2010-05-01 00:00:00

abstract：:Although the genus Blechnum has been largely studied, problems of species characterization, nomenclature, classification and taxonomy remain unsolved. For these reasons, in this study we intend to deepen in the characterization of the arborescent group of Blechnum with a review of eight species: B. brasiliense, B. col...

journal_title：Revista de biologia tropical

authors： Rolleri CH,Prada C,Gabriel JM,Galán,Passarelli LM

更新日期：2013-03-01 00:00:00