abstract：:The spatial distribution of individuals is a fundamental property of most species and constitutes essential information for the development of restoration and conservation strategies, especially for endangered plant species. In this paper we describe the spatial distribution of different size classes of the endangered...

journal_title：Revista de biologia tropical

authors： Fuchs EJ,Robles T,Hamrick JL

更新日期：2013-09-01 00:00:00

abstract：:The advancing agricultural frontier has led to an important loss of natural habitats, with significant consequences for biodiversity. The demography for two species of anurans, Physalaemus biligonigerus and Rhinella arenarum, both associated with agricultural systems in the central region of the C6rdoba Province, were...

journal_title：Revista de biologia tropical

authors： Bionda C,Lajmanovich R,Salas N,Martino A,di Tada I

更新日期：2013-09-01 00:00:00

abstract：:Sponges have an important ecological role in coral reef ecosystems. However, when compared to other benthic Phyla, it has been little researched. This research was focused in the variability of the community structure of sponges in three locations at Morrocoy National Park (Cayo Sombrero, Playa Mero and Punta Brava) e...

journal_title：Revista de biologia tropical

authors： Romero MA,Villamizar E,Malaver N

更新日期：2013-09-01 00:00:00

abstract：:J. curcas has been studied in different countries and some interesting agronomic, pharmacological and industrial properties have been reported. More recently, it has been considered an important alternative source for biofuel production. The objective of this study was to establish a long-term method for the maintenan...

journal_title：Revista de biologia tropical

authors： Solís-Ramos LY,Carballo LM,Valdez-Melara M

更新日期：2013-09-01 00:00:00

abstract：:In Central America, palm swamps are known collectively as yolillales. These wetlands are usually dominated by the raffia palm Raphia taedigera, but also by the royal palm Manicaria saccifera and -in lower extensions- by the American oil palm Elaeis oleifera. The yolillales tend to be poor in woody species and are char...

journal_title：Revista de biologia tropical

authors： Serrano-Sandí J,Bonilla-Murillo F,Sasa M

更新日期：2013-09-01 00:00:00

abstract：:The Black Brant is a common inhabitant of the Western Artic American tundra, which migrates to Southern Pacific coasts during the winter season. Approximately, 31000 birds (31%) constitute the Mexican population of Brants at Guerrero Negro, Ojo de Liebre, and Exportadora de Sal lagoon complex; nevertheless, there is l...

journal_title：Revista de biologia tropical

authors： Cedillo IM,Carmona R,Ward DH,Danemann GD

更新日期：2013-06-01 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

authors： Rojas LM,Mata C,Oliveros A,Salazar-Lugo R

更新日期：2013-06-01 00:00:00

abstract：:The queen conch Eustrombus gigas is an important fisheries resource in the Caribbean region. In Cuba Island the studies about this resource are very scarce and particularly in the Southeastern regions of the country. With the aim to get important fishery information about this gastropod, adult Queen Conch density and ...

journal_title：Revista de biologia tropical

authors： Cala YR,de Jesús-Navarrete A,Ocaña FA,Oliva-Rivera J

更新日期：2013-06-01 00:00:00

abstract：:Nutrient dynamics in forest plantations of Azadirachta indica (Meliaceae) established for restoration of degraded lands in Colombia. Azadirachta indica is a tree species which use is steadily increasing for restoration of tropical and subtropical arid and degraded lands throughout the world. The objective of this rese...

journal_title：Revista de biologia tropical

authors： Flórez-Flórez CP,León-Peláez JD,Osorio-Vega NW,Restrepo-Llano MF

更新日期：2013-06-01 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

abstract：:The advertisement call plays an important role in the life history of anuran amphibians, mainly during the breeding season. Call features represent an important character to discriminate species, and sound emissions are very effective to assure or reinforce genetic incompatibility, especially in the case of sibling sp...

journal_title：Revista de biologia tropical

authors： Valetti JA,Salas NE,Martino AL

更新日期：2013-03-01 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

authors： Sarkar UK,Pathak AK,Tyagi LK,Srivastava SM,Singh SP,Dubey VK

更新日期：2013-03-01 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

authors： Valencia JS,Díaz ME,Aranda DA

更新日期：2013-03-01 00:00:00

abstract：:The Snout Otter Clam, Lutraria philippinarum is a regularly harvested bivalve species for food and also as a source of income in the Philippines. For sustainable supply of this resource in the wild, efficient and effective management strategies are needed, and the evaluation of its reproductive biology and fishery are...

journal_title：Revista de biologia tropical

authors： Bantoto V,Ilano A

更新日期：2012-12-01 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

authors： García-Jiménez L,Gutiérrez-Espeleta G,Narod SA

更新日期：2012-12-01 00:00:00

abstract：:The euglossine bee Eulaema nigrita plays an important role for the pollination of native and economically important plants, such as the sweet passion-fruit Passiflora alata. E. nigrita uniquely collects the nectar from the flowers of P. alata, nevertheless, it needs to visit other plants to collect pollen, nectar and ...

journal_title：Revista de biologia tropical

authors： da Silva CI,Bordon NG,da Rocha Filho LC,Garófalo CA

更新日期：2012-12-01 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

authors： Pérez-Molina JP,Cordero Solórzano RA

更新日期：2012-12-01 00:00:00

abstract：:Resident and migratory shorebirds inhabit different kinds of wetlands such as lagoons, rivers and seashores among others. In recent years, these areas have been importantly affected by urban, agriculture and touristic activities, such as the Barra de Navidad lagoon, for which little information is available to support...

journal_title：Revista de biologia tropical

authors： Hernández S,Serrano S,Hernández XA,Robles MI

更新日期：2012-09-01 00:00:00

abstract：:In Egypt, Biomphalaria alexandrina is the intermediate host for Schistosoma mansoni. The fates of Schistosoma miracidia in the snails varies between different species of Biomphalaria. The internal defense system is one of the factors that influence the susceptibility pattern of the snails. The interaction between Biom...

journal_title：Revista de biologia tropical

authors： Abou-El-Naga IF,Radwan EH

更新日期：2012-09-01 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：: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

authors： Medina ES,Lücking R,Rojas AB

更新日期：2012-06-01 00:00:00

abstract：:Anisotremus interruptus is a widely distributed and commercially important species in the Eastern Pacific. A multi-year research on the reproduction of this species was carried out in coastal waters of Jalisco, Mexico. For this purpose, monthly samples were gathered with gillnets of different mesh sizes from 1998-2008...

journal_title：Revista de biologia tropical

authors： Ruiz-Ramírez S,Lucano-Ramírez G,González-Sansón G,Rojo-Vázquez JA,Arellano-Martínez M

更新日期：2012-06-01 00:00:00

abstract：:Philopotamidae is a large caddisfly family with 20 extant genera comprising about 1000 described species worldwide. Alterosa contains 22 described species distributed in South and Southeastern Brazil. Adults of the genus are very similar in general structure, but are remarkable for their wide variation in male genital...

journal_title：Revista de biologia tropical

authors： Jardim GA,Dumas LL

更新日期：2012-06-01 00:00:00

abstract：:Actually, the germplasm of Jatropha spp. is conserved as whole plants in field collections. Under this storage method, the genetic resources are exposed to disease, pest and natural hazards such as human error, drought and weather damage. Besides, field genebanks are costly to maintain and with important requirements ...

journal_title：Revista de biologia tropical

authors： Silva Rde C,Camillo J,Scherwinski-Pereira JE

更新日期：2012-03-01 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

authors： Mena Torres F,Pfennig S,Arias Andrés Mde J,Márquez-Couturier G,Sevilla A,Protti CM

更新日期：2012-03-01 00:00:00

abstract：:Gastropods are one of the most abundant groups within the Caribbean mangroves, however, little is known about the distribution of particular species at a regional scale. With this aim, we studied the geographic distribution of Littoraria (Littorinopsis) angulifera and Neritina (Vitta) virginea within the Darién Ecoreg...

journal_title：Revista de biologia tropical

authors： Ferney Ortiz L,Blanco JF

更新日期：2012-03-01 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

authors： Bedoya MJ,Murillo OE

更新日期：2012-03-01 00:00:00

abstract：:Plant litter production and decomposition are two important processes in forest ecosystems, since they provide the main organic matter input to soil and regulate nutrient cycling. With the aim to study these processes, litterfall, standing litter and nutrient return were studied for three years in an oak forest (Querc...

journal_title：Revista de biologia tropical

authors： León JD,González MI,Gallardo JF

更新日期：2011-12-01 00:00:00

abstract：:The information on ecological behavior of wild sloths is very scarce. In this study we determined the home ranges and resources used by three adult female three-toed sloths (Bradypus variegatus) and their four young in an agricultural matrix of cacao (Theobroma cacao), pasture, riparian forests and living fencerows in...

journal_title：Revista de biologia tropical

authors： Ramirez O,Vaughan C,Herrera G,Guries R

更新日期：2011-12-01 00:00:00

abstract：:The semi-arid Caatinga is the fourth largest biome of Brazil, which biota still remains one of the most poorly known, especially with regard to invertebrate groups. In this study, a ground-foraging ant assemblage was surveyed during one year and the effect of rainfall on pitfall trapping was assessed. The study was pe...

journal_title：Revista de biologia tropical

authors： Nunes FA,Segundo GB,Vasconcelos YB,Azevedo R,Quinet Y

更新日期：2011-12-01 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

authors： Fonseca Rodríguez C,Marín-Vindas C,Chavarría-Solera F,Agüero Pedro T

更新日期：2011-12-01 00:00:00

abstract：:There is great concern about the effect of climate change in arid and subarid areas of the tropics. Climate change combined with other anthropogenic activities such as deforestation, fires and over-grazing can accelerate their degradation and, consequently, the increases in losses of biological and economic productivi...

journal_title：Revista de biologia tropical

authors： Ramírez JA,Ignacio del Valle J

更新日期：2011-09-01 00:00:00

abstract：:Raptorial birds harbor a variety of ectoparasites and the mayority of them are host specific. The aim of this study was to identify the ectoparasites of captive birds of prey from Mexico, as well as to verify their impact in the health of infested birds. Raptorial birds were confiscated and kept in captivity at the Ce...

journal_title：Revista de biologia tropical

authors： de Oliveira JB,Santos T,Vaughan C,Santiago H

更新日期：2011-09-01 00:00:00

abstract：:The availability of data sets covering more than a year is scarce for tropical environments. Advances in hardware and software speed-up the re-analysis of old data sets and facilitates the identification of hidden data patterns. From February 1984 to April 1987 (49 sampling dates), core samples (17.7cm2, 15cm deep) we...

journal_title：Revista de biologia tropical

authors： Vargas-Zamora JA,Sibaja-Cordero JA

更新日期：2011-09-01 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：:The vegetation of the sandy hills ("lomas") constitutes the main originality of the Peruvian and Chilean desert with a high number of endemics that shapes the vicarious associations. In this work, a phytosociological view of sandy environments of the Peruvian coastal desert is presented. According to the Braun-Blanque...

journal_title：Revista de biologia tropical

authors： Galán de Mera A,Linares Perea E,Campos de la Cruz J,Vicente Orellana JA

更新日期：2011-06-01 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

authors： Madrigal HN

更新日期：2011-06-01 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

authors： Castellanos MC,Stevenson PR

更新日期：2011-06-01 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

authors： Ferreira FA,Mormul RP,Thomaz SM,Pott A,Pott VJ

更新日期：2011-06-01 00:00:00

abstract：:The marine phanerogam Syringodium filiforme, known as "manatee grass", is a common species that grows in coastal areas associated to Thalassia testudinum. With the aim to describe some of its possible chemical characteristics, this study was performed with a sample of 1.2 kg, collected in March 2009, in Guanabo beach,...

journal_title：Revista de biologia tropical

authors： González García KL,Valdés Iglesias O,Laguna A,Díaz Martínez M,González Lavaut JA

更新日期：2011-03-01 00:00:00