Temporal Variation in Infection Prevalence by the Amphibian Chytrid Fungus in Three Species of Frogs at La Selva, Costa Rica

Biotropica ◽  
2012 ◽  
Vol 44 (6) ◽  
pp. 779-784 ◽  
Author(s):  
Steven M. Whitfield ◽  
Jacob Kerby ◽  
Lydia R. Gentry ◽  
Maureen A. Donnelly
Keyword(s):  
Costa Rica ◽  
Temporal Variation ◽  
Infection Prevalence ◽  
Chytrid Fungus ◽  
La Selva ◽  
Amphibian Chytrid Fungus

The amphibian chytrid fungus along an altitudinal transect before the first reported declines in Costa Rica

2006 ◽  
Vol 132 (1) ◽  
pp. 136-142 ◽  
Author(s):  
Robert Puschendorf ◽  
Federico Bolaños ◽  
Gerardo Chaves
Keyword(s):  
Costa Rica ◽  
Chytrid Fungus ◽  
Amphibian Chytrid Fungus

Low infection prevalence of the amphibian chytrid fungus Batrachochytrium dendrobatidis (Chytridiomycetes: Rhizophydiales) in Cuba

2017 ◽  
Vol 38 (2) ◽  
pp. 243-249 ◽  
Author(s):  
Joana Sabino-Pinto ◽  
Molly C. Bletz ◽  
Manuel Iturriaga ◽  
Miguel Vences ◽  
Ariel Rodríguez
Keyword(s):  
Batrachochytrium Dendrobatidis ◽  
Infection Prevalence ◽  
Chytrid Fungus ◽  
Population Declines ◽  
Amphibian Chytrid Fungus

The chytrid fungus Batrachochytrium dendrobatidis (Bd) is responsible for population declines and extinctions of amphibians worldwide. The distribution and prevalence of Bd in Cuba has remained unknown to date, with only a single report on its presence. We collected 182 samples from wild anuran populations across 21 species and 16 localities and tested for the presence of Bd using qPCRs. Only six Bd positive samples from four species were detected in three very close localities in Central Cuba. Bd prevalence was of 10-20% in the positive localities, and the island-wide prevalence was only 3.2%. These results indicate that Bd occurrence in Cuba might be concentrated in or even restricted to the central Guamuhaya Massif and call for increased conservation and monitoring efforts in these mountains along with additional sampling in areas and species not covered in this study.

scholarly journals Estimation of tropical forest height and biomass dynamics using lidar remote sensing at La Selva, Costa Rica

2010 ◽  
Vol 115 (G2) ◽  
pp. n/a-n/a ◽  
Author(s):  
R. O. Dubayah ◽  
S. L. Sheldon ◽  
D. B. Clark ◽  
M. A. Hofton ◽  
J. B. Blair ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Costa Rica ◽  
Tropical Forest ◽  
La Selva ◽  
Forest Height ◽  
Biomass Dynamics

scholarly journals Is overwintering mortality driving enigmatic declines? Evaluating the impacts of trematodes and the amphibian chytrid fungus on an anuran from hatching through overwintering

PLoS ONE ◽  
2022 ◽  
Vol 17 (1) ◽  
pp. e0262561
Author(s):  
Olivia Wetsch ◽  
Miranda Strasburg ◽  
Jessica McQuigg ◽  
Michelle D. Boone
Keyword(s):  
Batrachochytrium Dendrobatidis ◽  
Species Conservation ◽  
Emerging Infectious Diseases ◽  
The Novel ◽  
Chytrid Fungus ◽  
Growth And Survival ◽  
Critical Life Events ◽  
Overwintering Mortality ◽  
Amphibian Chytrid Fungus

Emerging infectious diseases are increasing globally and are an additional challenge to species dealing with native parasites and pathogens. Therefore, understanding the combined effects of infectious agents on hosts is important for species’ conservation and population management. Amphibians are hosts to many parasites and pathogens, including endemic trematode flatworms (e.g., Echinostoma spp.) and the novel pathogenic amphibian chytrid fungus (Batrachochytrium dendrobatidis [Bd]). Our study examined how exposure to trematodes during larval development influenced the consequences of Bd pathogen exposure through critical life events. We found that prior exposure to trematode parasites negatively impacted metamorphosis but did not influence the effect of Bd infection on terrestrial growth and survival. Bd infection alone, however, resulted in significant mortality during overwintering—an annual occurrence for most temperate amphibians. The results of our study indicated overwintering mortality from Bd could provide an explanation for enigmatic declines and highlights the importance of examining the long-term consequences of novel parasite exposure.

scholarly journals COMUNICACIÓN Morfometría foliar y clorofila de Piper reticulatum (Piperaceae) en luz y sombra en la Estación Biológica La Selva, Costa Rica

2016 ◽  
Vol 8 (2) ◽  
pp. 255-258
Author(s):  
Sergio A. Villegas-Retana ◽  
María Chavarría-Soto
Keyword(s):  
Costa Rica ◽  
La Selva

 Las plantas tropicales presentan gran variedad en su morfología y fisiología para captar luz dentro del bosque. Piper reticulatum es un pequeño árbol con la capacidad vivir en condicionesde luz y sombra. En este trabajo se comparó algunos parámetros foliares en condicionesde luz y sombra en P. reticulatum. Se tomaron 50 hojas maduras al azar de diferentes individuos, 25 por cada tipo de hábitat, a cada una se le determinó el área foliar específica, grosor, forma de la hoja y cantidad de clorofila. Se determinó que existe diferencia significativa entre las plantas a la luz y a la sombra en el área foliar específica, grosor, forma y cantidad de clorofila de la hoja. Las plantas a la luz presentaron valores más altos en la forma de la hoja y grosor y las plantas a la sombra presentaron valores más altos de área foliar específica y clorofila. Los resultados indican que P. reticulatum presenta una gran plasticidad en cuanto a la forma de las hojas lo cual mejora su rendimiento y le permite competir mejor con otras especies.

scholarly journals Líquenes folícolas de la Estación Biológica La Selva, Costa Rica: Inveritiuio, comunidades y comparación florística de tipos de vegetación

1969 ◽  
pp. 287-308
Author(s):  
Robert Lücking
Keyword(s):  
Costa Rica ◽  
Common Species ◽  
Forest Understory ◽  
Primary Forest ◽  
Lowland Rain Forest ◽  
La Selva ◽  
Foliicolous Lichens ◽  
Anthropogenic Vegetation ◽  
Light Gaps ◽  
Made In

A total of 28 0 foliicolous lichens and 1 2 Jichenicolous fungi was found in an inventory made in the lowland rain forest at La Selva Bi010gical Station, Costa Rica. ll1e species composition reflects 50 % of the world's diversity of foliicolous lichens and i5 representative for neotropical lowland rain forests. The most common specíes are Gyalectidium filicinum, :-,'poropodium leprieuríi, Trieharia vainloi, Porina epiphylla. Phyllophiale alba, Trichotheliuní epiphyllwll. Mazosia phyllosema, Tricharia ureeolata. and Arthonia leptosperma. Many species show distinct microsite preferences: (1) Characteristic of the shady Ullderstory, inc1uding Arthoniaceae, Opegraphaceae, Pilocarpaceae, and Trichotbeliaoeae; (2) characteristic oflíght gaps, .incJuding Gomphillaceae and Ectolechiaceae; (3) characteristic of the canopy, incJuding Asterothyriaceae and Gomphil1ace.ae. Only few species exhibit preferences towards oertainleaf types, either dicoty1edoneous oc palm lea ves. The microsite preferences agree with earlier established indices, except for a few species for which modified índices are proposed, Communities resulting f'l-om tbese preferences are illustraíed by clustering of phorophytes and associatiol1s oí foliicolous ·lichens. The . three principal associatiol1s correspood to the shady understory,- light gaps and the canopy, whereas two subassociations reflect subtJe phorophyte preferences, Species diversity and compositiona.re strongly affected by the degreeof disturbanceofvegetation typesatLa Selva. Diversity i8 highest in the primary forest and lowest in young successíonal stages.The foliicolons lishen flora of open,anthropogenic vegetatíon resembles that oí l¡ght gaps. 01' fue canopy in the primary forest, while species characteristíc of the forest understory disappear.

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