abstract：:Some dinoflagellates with benthic habits are related to ciguatera intoxication by fish consumption, especially in tropical areas. In the Mexican Caribbean, ciguatera is relatively common, but only one paper seems to have been published on the subject, and there are very few publicactions on phytoplankton and benthic m...

journal_title：Revista de biologia tropical

authors： Hernández-Becerril DU,Almazán Becerril A

更新日期：2004-09-01 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：:The current taxonomic status of the species and subspecies belonging to the genus Alouatta is addressed by combined phylogenetic analysis using morphological, kariotipyc and molecular data (mitochondrial genes cytocrome oxidase II and cytochrome B). Our result demonstrated that Alouatta palliata is the most basal taxo...

journal_title：Revista de biologia tropical

authors： Villalobos F,Valerio AA,Retana AP

更新日期：2004-09-01 00:00:00

abstract：:A review of leukemia worldwide is discussed, focusing on etiology, diagnosis and treatment. The history of research of this type of cancer in Costa Rica is presented through the first hospital diagnosis, the arrival of clinical and laboratory hematologists, the establishment of specialized laboratories, the local hema...

journal_title：Revista de biologia tropical

authors： Jiménez Bonilla R

更新日期：2004-09-01 00:00:00

abstract：:Hereditary motor and sensory neuropathy (HMSN) or Charcot-Marie-Tooth disease (CMT) is the most common hereditary illness of the peripheral nervous system. The genetics and the physiopathological aspects of the disease clarified until know, are here summarized. More than twenty genes and ten additional loci have been ...

journal_title：Revista de biologia tropical

authors： Leal A

更新日期：2004-09-01 00:00:00

abstract：:Dormirator maculatus (n=184) was collected in the Alvarado Lagoon, Mexico during a year period (Oct. 1993-1994). In the helminthologic review, the presence of Clinostomum complanatum (82.3%), Neoechinorhynchus golvani (76.1%), Spiroxys sp. (21.3 %), and Camallanus sp. (6.2%) was registered. Reduction of the hematocrit...

journal_title：Revista de biologia tropical

authors： Mendoza JM,Sarabia DO,López RC,López JF

更新日期：2004-06-01 00:00:00

abstract：:Egg clutches of the centrolenid Hyalinobatrachium pulveratum were sampled in four lowland locations of Costa Rica. The ontogenesis of the tadpoles of this species is documented by periodical descriptions of the larval stages. Larvae of H. pulveratum change their shape during development because of the non-equal growth...

journal_title：Revista de biologia tropical

authors： Hoffmann H

更新日期：2004-03-01 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 spawning of the muricid gastropod Plicopurpura pansa in the laboratory at 22-23 degrees C is described. Females deposited 1-20 capsules daily for at least 20 weeks, and produced up to 150 capsules each per spawning season. During spawning, egg clusters were formed consisting of hundreds of capsules of different ag...

journal_title：Revista de biologia tropical

authors： Naegel LC

更新日期：2004-03-01 00:00:00

abstract：:The effect of different lecithin sources and presentations on growth, food conversion ratio and survival of P. vannamei (290 mg +/- 0.02) was studied. The bioassay was designed in order to compare different dietary levels and different quality of lecithin. Squid lecithin, crude soybean (7%), deoiled soybean lecithin (...

journal_title：Revista de biologia tropical

authors： Re-Araujo AD,Acosta Ruiz Mde J

更新日期：2003-09-01 00:00:00

abstract：:For the sub-chronic toxicity an aqueous preparation of Plantago major leaves was tested in 20 male NGP mice, with an average weight of 20.15 g and separated in two groups of ten individuals each. The dose used was 2000 mg/kg and the control group received 0.5 ml of distilled water. The extract administration was done ...

journal_title：Revista de biologia tropical

authors： García González M,Coto Morales T,Soto Rodríguez GA,Pazos L

更新日期：2003-09-01 00:00:00

abstract：:We studied the composition and seasonal variation of the diet of the capybara (Hydrochaeris hydrochaeris) in the flooded savannas of Caño Limón, Colombia. This was achieved by direct observation of the consumption patterns of these animals. The capybaras only consumed plants, and their diet included 89 species of 22 f...

journal_title：Revista de biologia tropical

authors： Forero-Montaña J,Betancur J,Cavelier J

更新日期：2003-06-01 00:00:00

abstract：:Egg abundance of Anchoa mitchilli was studied in Laguna de Tamiahua, Veracruz during three annual cycles (84-85, 85-86 and 86-87). Our goal was to detect areas and seasons with high egg abundance and the possible association of such areas and seasons with covariates such as temperature, salinity, transparency, depth, ...

journal_title：Revista de biologia tropical

authors： Díaz-Avalos C,Barba-Torres JF,Gaspar-Dillanes MT

更新日期：2003-06-01 00:00:00

abstract：:Observations about the floral biology and the reproductive system of Macroptilium fraternum were made in two populations in Argentina, with different edaphic conditions, situated at the southern area of distribution of the species. The coexistence of two kind of flowers in the same plant was detected in both populatio...

journal_title：Revista de biologia tropical

authors： Hoc PS,Drewes SI,Amela García MT

更新日期：2003-06-01 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：:The need to propose recommendations for the management of over 80 species of bivalves and gastropod mollusks exploited commercially in Mexico, led to look for trends on the population and reproductive biology in relation to prevailing environmental conditions of the habitats where they are exploited. The reproductive ...

journal_title：Revista de biologia tropical

authors： Baqueiro Cárdenas E,Aldana Aranda D

更新日期：2003-06-01 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

authors： Kojis BL,Quinn NJ,Caseau SM

更新日期：2003-06-01 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：:The effects of sex, injuries, season and site on the growth of the spiny lobsters Panulirus gracilis, and P. inflatus, were studied through mark-recapture techniques in two sites with different ecological characteristics on the coast of Guerrero, México. Panulirus gracilis occurred in both sites, whereas P. inflatus o...

journal_title：Revista de biologia tropical

authors： Briones-Fourzán P,Lozano-Alvarez E

更新日期：2003-03-01 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

authors： Pacheco L,Riba R

更新日期：2003-03-01 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：: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：: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：:Female resistance behavior that occurs prior to intromission does not by itself imply forced copulation. Such behavior may function instead as a test of the male in order to favor some males over others, or to induce the male to desist. Thus, male persistence and forcefullness may sometimes be better described as pers...

journal_title：Revista de biologia tropical

authors： Eberhard WG

更新日期：2002-06-01 00:00:00

abstract：:Starch gel electrophoresis was used to analyze the allelic variability of four polymorphic loci (Lap-2, Lap-3, Pgm and Gpi) from a single population of Artemia franciscana (Kellogg, 1906) from the Great Salt Lake (Utah, USA), cultured under eight different experimental conditions. The organisms were cultured to the ad...

journal_title：Revista de biologia tropical

authors： Rodríguez D,Correa F,de la Rosa-Vélez J,Escobar R,Cordero B,Alvarez Z,Sánchez R

更新日期：2002-03-01 00:00:00

abstract：:Lichens are increasingly used worldwide as air quality biomonitors because they are efficient, easy and cheap, but validation studies of the methodology are scarce. Three foliose lichen biomonitoring methods were compared by field tests (in the tropical urban habitat of San José, Costa Rica) and laboratory simulations...

journal_title：Revista de biologia tropical

authors： Monge-Nájera J,González MI,Rivas Rossi M,Méndez VH

更新日期：2002-03-01 00:00:00

abstract：:Specimens of the characid Brycinus nurse (N = 980) were collected in Asa reservoir, Nigeria, from November 1991 to October 1993. The diet was analyzed from stomach contents using the frequency of occurrence, numerical and gravimetric methods. Fish sex affected occurrence, number and weight of food items. The relative ...

journal_title：Revista de biologia tropical

authors： Saliu JK

更新日期：2002-03-01 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

authors： Vivan LM,Torres JB,Barros R,Veiga AF

更新日期：2002-03-01 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

authors： Paynter CK,Cortés J,Engels M

更新日期：2001-12-01 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

authors： Lizano OG

更新日期：2001-12-01 00:00:00

abstract：:Fifteen species of Nereididae (Annelida: Polychaeta) belonging to nine genera are reported from the subtidal and intertidal of the Pacific Coast of Costa Rica. A new species, Nereis costaricaensis, is described. Laeonereis brunnea Hartmann-Schröder 1959 is removed from synonomy with L. culveri (Webster 1880) while Per...

journal_title：Revista de biologia tropical

authors： Dean HK

更新日期：2001-12-01 00:00:00

abstract：:Shade-grown coffee is an agricultural system that contains some forest-like characteristics. However, structure and diversity are poorly known in shade coffee systems. In 61 coffee-growers' plots of Chiapas, Mexico, structural variables of shade vegetation and coffee yields were measured, recording species and their u...

journal_title：Revista de biologia tropical

authors： Soto-Pinto L,Romero-Alvarado Y,Caballero-Nieto J,Segura Warnholtz G

更新日期：2001-09-01 00:00:00

abstract：:Size and fecundity observations of pea crab (Juxtafabia muliniarum) from the paleal cavity of the oyster Saccostrea palmula were made from May 1998 to May 1999. Infestation frequency was 18.52% in a sample of 540 oysters. Of 136 pea crabs, 36% were couples, 60% were single females and 4% were single males. The mean ca...

journal_title：Revista de biologia tropical

authors： Cabrera Peña J,Protti Quesada M,Urriola Hernández M,Sáenz Vargas O,Alfaro Hidalgo R

更新日期：2001-09-01 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

authors： Altrichter M,Carrillo E,Sáenz J,Fuller TK

更新日期：2001-09-01 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：:The genus Helcogrammoides comprises three species of small, cryptic shorefishes, H. antarcticus, H. chilensis, and H. cunninghami. All three species inhabit shallow water along exposed rocky coasts. Specimens reported herein extend the known distributions of H. chilensis and H. cunninghami to the vicinity of Lima, Per...

journal_title：Revista de biologia tropical

authors： Williams JT,Springer VG

更新日期：2001-07-01 00:00:00

abstract：:Two unusual specimens of the grenadier genus Coryphaenoides were collected by the deep-submersible vehicle Johnson Sea-Link off the Galápagos. Unlike any other member of the genus, the snout in these specimens was rounded, non-protruding, naked anteriorly and ventrally, with no tubercular scales marking the terminal a...

journal_title：Revista de biologia tropical

authors： Iwamoto T,McCosker JE

更新日期：2001-07-01 00:00:00

abstract：:The volume of secretion obtained from adult Zonocerus variegatus (Orthoptera: Pyrgomorphidae) was influenced by the type of food plants. Insects fed on leaves of cassava Manihot esculenta, bitter leaves Vernonia amygdalina, and a mixture of M. esculenta and Acalypha wilkesiana gave a good volume of secretion while Chr...

journal_title：Revista de biologia tropical

authors： Idowu AB,Idowu OA

更新日期：2001-06-01 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

authors： Arcas AP,Omar Ramos A,Arrieche D,Villalba J,Lodeiros C

更新日期：2001-06-01 00:00:00

abstract：:The composition of leaf and rhizome essential oils of Alpinia smithiae that grow wild in the Western Ghats of Kerala (South India) was analysed by gas chromatography. The major components were beta-caryophyllene, sabinene, myrcene and 1,8-cineole in both samples, but variation in the yield of oil as well as the major ...

journal_title：Revista de biologia tropical

authors： Joseph R,Joseph T,Joseph J

更新日期：2001-06-01 00:00:00