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

Stevens, George C.; Matthew, Kathryn K.

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

dc.creator	Stevens, George C.
dc.creator	Matthew, Kathryn K.
dc.date	2016-04-18
dc.date.accessioned	2016-05-03T15:26:00Z
dc.date.available	2016-05-03T15:26:00Z
dc.identifier	http://revistas.ucr.ac.cr/index.php/rbt/article/view/23617
dc.identifier	10.15517/rbt.v37i1.23617
dc.identifier.uri	https://hdl.handle.net/10669/25763
dc.description	Quercus 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.description	El 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.format	application/pdf
dc.language	eng
dc.publisher	Universidad de Costa Rica	en-US
dc.rights	Copyright (c) 2016 Revista de Biología Tropical/International Journal of Tropical Biology and Conservation	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol 37, No 1 (1989); 63-67	en-US
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol 37, No 1 (1989); 63-67	es-ES
dc.source	Revista Biología Tropical; Vol 37, No 1 (1989); 63-67	pt-PT
dc.source	2215-2075
dc.source	0034-7744
dc.source	10.15517/rbt.v37i1
dc.title	Quercus costaricensis Liebm. and the problem of multi-seeded acorns	en-US
dc.title	Quercus costaricensis Liebm. and the problern of multi-seeded acorns	es-ES
dc.type	artículo original

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