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Now showing items 101-110 of 281
Distribución y densidad de dos especies de holoturoideos en la isla de Cubagua, Venezuela
(Universidad de Costa Rica, 2011)
Distribution and density of two holothurian species in Cubagua Island, Venezuela. Holothurian populations in the Caribbean have been significantly depleted in some areas, and others are still in danger to satisfy international ...
Diagnostic parameters of Northern blot hybridization technique for detection of citrus viroids in field-grown plants
(Academic Journals Inc., 2017)
Background and Objective: The identification and diagnosis of citrus viroids can be achieved by molecular techniques that directly detect
the presence of viroid genomes within infected plant RNA pools. Several studies ...
Ecology and management of the invasive lionfish Pterois volitans/miles complex (Perciformes: Scorpaenidae) in Southern Costa Rica--
(Universidad Nacional (Costa Rica), 2015-03)
Invasive species alter ecosystem integrity and functioning and are considered one of the major threats
to biodiversity on a global scale. The indopacific lionfish (Pterois volitans [Linnaeus, 1758] / miles [Bennet,
1882] ...
Efficacy of calcein and Coomassie Blue dyeing of shell growing-edges and micro growth-bands: Ageing juvenile of Pinctada mazatlanica(Pterioida: Pteriidae)
(Universidad de Costa Rica, 2014)
Age validation is the first step to determine shellfish species age determination. This information is vital for different inferential models used in marine ecosystem management activities. In spite that various validation ...
Neotropical flowering epiphyte diversity: local composition and geographic affinities
(Universidad Nacional, Costa Rica, 2013)
Worldwide, the highest diversity of vascular epiphytic plants resides in the
Neotropics. The general pattern of taxonomic composition of the neotropical epiphytic
flora has been described, but information regarding the ...
Feeding ecology of invasive lionfish (Pterois volitans and Pterois miles) in the temperate and tropical western Atlantic
(Universidad Nacional (Costa Rica), 2018-03-11)
Numerous location-based diet studies
have been published describing different aspects of
invasive lionfish (Pterois volitans and Pterois miles)
feeding ecology, but there has been no synthesis of
their diet composition ...
Moribaetis brachiostrinus (Ephemeroptera: Baetidae), a new species of mayfly from Costa Rica
(Magnolia Press, 2018)
A new species of Moribaetis is described based on nymphs from the Nicoya peninsula. The new species can be distin guished from the other described species of the genus, among other characteristics, by its short antennae, ...
Mesoamerican tree squirrels evolution (Rodentia: Sciuridae): a molecular phylogenetic analysis
(Universidad de Costa Rica, 2014)
The tribe Sciurini comprehends the genera Sciurus, Syntheosiurus, Microsciurus, Tamiasciurus and
Rheinthrosciurus. The phylogenetic relationships within Sciurus have been only partially done, and the relation ship between ...
Los onicóforos, fósiles caminantes
(Consejo Nacional de Ciencia y Tecnología de El Salvador, 2012-08-23)
Los onicóforos son considerados
“fósiles vivientes” porque durante
más de 500 millones de años su
morfología ha cambiado muy poco
y han mantenido un estadio evoluti vo aparentemente intermedio entre
los anélidos ...
Growth and photosynthetic performance of five tree seedlings species in response to natural light regimes from the Central Pacific of Costa Rica
(Universidad de Costa Rica, 2013)
Growth and photosynthetic performance of five seedlings of tree species in response to natural light regimes in the Central Pacific of Costa Rica. Environmental heterogeneity mostly dominated by differing light regimes ...