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Quercus costaricensis Liebm. and the problern of multi-seeded acorns

dc.creatorStevens, George C.
dc.creatorMatthew, Kathryn K.
dc.date2016-04-18
dc.date.accessioned2016-05-03T15:26:00Z
dc.date.available2016-05-03T15:26:00Z
dc.identifierhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/23617
dc.identifier10.15517/rbt.v37i1.23617
dc.identifier.urihttp://hdl.handle.net/10669/25763
dc.descriptionQuercus costaricensis Liebm, growing near Cerro de la Muerte, Cartago Province, Costa Rica has been found to produce 42% multi-seeded acorns. With the addition of Q. costaricensis there are now 10 species of Quercus known to produce acorns that contain more than one seed. The only published explanation suggests that insect seed predation may be the selective agents producing an advantage to trees that make multi-seeded acorns period. Q. costaricensis was found to experience little insect predation, forcing us to generate an alternative explanation for the multi-seeded acorn habit of some oaks. We hypothesize that the production of multi-seeded acorns is selectively neutral, being found only in oaks that produce a wide range of seed weights even within the single seeded acorns they produce. Abnormalities in cotyledon number within acorns are also noted.en-US
dc.descriptionEl roble Quercus costaricensis, que crece cerca del Cerro de la Muerte en Costa Rica, produce un 42% de nueces con varias semillas cada una (solamente se conocían hasta ahora nueve especies en el mismo fenómeno). Se desecha la hipótesis de que éste sea resultado de la depredación, la cual es rara en esta población. Más bien podría tratarse de una característica selectivamente neutra.es-ES
dc.formatapplication/pdf
dc.languageeng
dc.publisherUniversidad de Costa Ricaen-US
dc.rightsCopyright (c) 2016 Revista de Biología Tropical/International Journal of Tropical Biology and Conservationen-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol 37, No 1 (1989); 63-67en-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol 37, No 1 (1989); 63-67es-ES
dc.sourceRevista Biología Tropical; Vol 37, No 1 (1989); 63-67pt-PT
dc.source2215-2075
dc.source0034-7744
dc.source10.15517/rbt.v37i1
dc.titleQuercus costaricensis Liebm. and the problem of multi-seeded acornsen-US
dc.titleQuercus costaricensis Liebm. and the problern of multi-seeded acornses-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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