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Sexual dimorphism in the second-to-fourth digit length ratio in green anoles, Anolis carolinensis (Squamata: Polychrotidae), from the southeastern United States
(2006)
Digit length ratios are organized during embryonic development and may show sexual dimorphism related to steroid exposure. The second-to-fourth digit length ratio (2D:4D) has received the most attention. In the present ...
Lepanthes aures‐ursinae and L. vertebrata spp. nov. (Orchidaceae: Pleurothallidinae) from Panama
(2017)
Panama is still far from completing its orchid flora inventories, where large genera such as Lepanthes (Pleurothallidinae) reveal novelties regularly. Here, we describe and illustrate two new species of Lepanthes. Lepanthes ...
First record of the Greenhouse frog, Eleutherodactylus planirostris (Anura: Eleutherodactylidae), in Costa Rica
(2016)
Introduced species can have a negative impact on native species, so that detection of new arrivals is fundamental to avoid establishment of breeding populations. Several species of frogs and lizards have been introduced ...
A Comparison of four Methods to Evaluate the Butterfly Abundance. Using a Tropical Community
(Journal of the Lepidopterists' Society 45(3), 1991, 241-243, 1991-03-18)
In recent years. several transect methods to evaluate the abundance of butterflies have been proposed (Pollard, E. 1977, Biol. Conserv. 12:115—134; Feltwell, 3. 1982. Proc. Trans. Br. Entomol. Nat. Hist. Soc. 15:17—24). ...
Changes in nesting sites abundance and their use by woodpeckers along an urban gradient: a ten-year comparison
Cambios en la abundancia de los sitios para anidar y su uso por carpinteros en un gradiente urbano: una comparación de diez años
(2019)
Woodpeckers nesting substrate abundance may be reduced by urban expansion, negatively affecting their reproduction. Long-term studies in the tropics are rare but valuable to estimate how urban development has affected ...
Is black plumage an adaptation to high elevations in a cosmopolitan bird genus?
(2019)
Black plumage is expected to absorb and retain more heat and provide better protection against UV radiation compared with lighter plumages. Black plumage is common in species of the genera Turdus and Platycichla that inhabit ...
A review of the Costa Rican myxomycetes (Amebozoa)
(2010)
There has not been a comprehensive review of the taxonomic composition of the assemblage of myxomycetes known from Costa Rica since 1975. As a result of a series of studies carried out in the country during the last decade, ...
Floral anatomy and evolution of pollination syndromes in Lepanthes and close relatives
(2019-07)
Pleurothallidinae is the largest Neotropical orchid subtribe encompassing >5100 species that are mainly dipteran-pollinated. Various pollination syndromes, targeting hump-backed flies (Phoridae), fungal gnats (Sciaridae), ...
Sounds in Melipona costaricensis (Apidae: Meliponini): effect of sugar concentration and nectar source distance
(Apidologie 33 (2002) 375–388, 2002)
The principal finding presented here is that Melipona costaricensis produces sounds that vary significantly
in relation to varying sugar concentrations. Several components of the sounds produced, during the
bees’stay ...