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First report of Diaphorina citri (Hemiptera: Psyllidae) in Costa Rica
(2005-09)
The Asian psyllid was reported in Rio de Janeiro, Brazil, by Costa Lima (1942) and by Catling (1970). In June 1998, the insect was detected in Florida and by September 2000 this pest had spread to 31 Florida counties ...
The role of learning, acoustic similarity and phylogenetic relatedness in the recognition of distress calls in birds
(2021-05)
Many groups of vertebrates produce distress calls when attacked by predators as a last attempt to survive. However, few studies investigate whether recognition of distress calls involves learning or acoustic similarity to ...
Cariotipos de diez especies de serpientes costarricenses de la familia Viperidae
(1979)
All the karyotypes of ten snake species of the family Viperidae from Costa Rica have a diploid number of 36 chromosomes, 16 macro- and 20 microchromosomes; females show an heteromorphism in the fourth pair. The karyological ...
Una Nueva especie del género Karnyothrips Watson (PHLAEOTHRIPIDAE:TUBULIFERA)
A new species of genus Karnyothrips Watson (Phlaeothripidae: Tubulifera)
(Entomología mexicana, vol. 8, 2009)
En este trabajo se describe una nueva especie de insecto, para el oriente de México (Xalisco, Nayarit) que se recolectó en cultivares de aguacate. Su nombre es Karnyothrips maurilia
A just overtime discovery: another new species of Echinosepala (Orchidaceae) from Costa Rica
(2022-08-13)
Echinosepala truncata is described as new to science and illustrated from the holotype. It is compared
with E. tomentosa, from which it differs by the sparsely lanate ovary, the narrowly obovate, apically rounded synsepal, ...
Flores y frutos de la Reserva Biológica Alberto Manuel Brenes
(San Ramón, Alajuela, 2011)
Representa una muestra representativa de la flora y frutos de la Reserva Biológica Alberto Manuel Brenes y ha sido elaborada para personas que empiezan a incursionar en el campo científico y para aquellas aficionadas a las ...
ICSEM10 Slideshow
(2020-03-03)
This is a slideshow produced for the 10th International Congress on the Systematics and Ecology of Myxomycetes, held in the city of Turrialba (UCR, Sede del Atlántico) in February 2020.
Microplastic ingestion by a herring Opisthonema sp. in the Pacific coast of Costa Rica
(2020-07)
Current knowledge of the presence of microplastics (MP) in marine species in tropical areas is still limited. The presence of MP was examined in the gastrointestinal content of 30 filter feeders of the herring Opisthonema ...
Movements and morphology under sexual selection: tsetse fly genitalia
(Ethology Ecology & Evolution 22: 385–391, 2010, 2010-04-17)
SHÖN (2009, Ethology Ecology & Evolution 21: 161–172) pointed out that in order
to understand the functional morphology of sexually selected structures that are used
as signaling devices in birds, it is crucial to ...
Las orquídeas de la Isla del Coco
(2005-08)
A pesar de que a veces parece que el mundo se ha vuelto demasiado pequeño y muy bien conocido, todavía hay algunos lugares remotos y solitarios que no han sido totalmente conquistados por el hombre. La Isla del Coco es uno ...