![\"\"](\"http:\/\/www.latvijasdaba.lv\/content\/kukaini\/hippobosca-equina-l.jpg\")
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Efectivamente, el n\u00famero de indiv\u00edduos de una especie no depende s\u00f3lo del n\u00famero de huevos.<\/p>\n
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93.<\/p>\n
The only difference between organisms which annually produce eggs or seeds by the thousand, and those which produce extremely few, is, that the slow breeders would require a few more years to people, under favourable conditions, a whole district, let it be ever so large. The condor lays a couple of eggs and the ostrich a score, and yet in the same country the condor may be the more numerous of the two. The Fulmar petrel lays but one egg, yet it is believed to be the most numerous bird in the world. One fly deposits hundreds of eggs, and another, like the hippobosca, a single one. But this difference does not determine how many individuals of the two species can be supported in a district. A large number of eggs is of some importance to those species which depend on a fluctuating amount of food, for it allows them rapidly to increase in number. But the real importance of a large number of eggs or seeds is to make up for much destruction at some period of life; and this period in the great majority of cases is an early one. If an animal can in any way protect its own eggs or young, a small number may be produced, and yet the average stock be fully kept up; but if many eggs or young are destroyed, many must be produced or the species will become extinct. It would suffice to keep up the full number of a tree, which lived on an average for a thousand years, if a single seed were produced once in a thousand years, supposing that this seed were never destroyed and could be ensured to germinate in a fitting place; so that, in all cases, the average number of any animal or plant depends only indirectly on the number of its eggs or seeds.<\/em><\/p>\n <\/p>\n La sola diferencia entre los organismos que anualmente producen huevos y semillas por millares y los que producen muy pocos es que los que cr\u00edan lentamente requerir\u00edan algunos a\u00f1os m\u00e1s para poblar en condiciones favorables un distrito entero, aunque fuese grand\u00edsimo. El c\u00f3ndor pone un par de huevos, y el avestruz de Am\u00e9rica una veintena, y, sin embargo, en el mismo pa\u00eds, el c\u00f3ndor puede ser el m\u00e1s numeroso de los dos; el petrel, Fulmarus glacialis, no pone m\u00e1s que un huevo, y, no obstante, se cree que es el ave m\u00e1s numerosa del mundo. Una especie de mosca deposita centenares de huevos, y otra, como la Hippobosca, uno solo; pero esta diferencia no determina cu\u00e1ntos individuos de la misma especie pueden mantenerse en una comarca. Un gran n\u00famero de huevos tiene alguna importancia para las especies que dependen de una cantidad variable de comida, pues esto les permite aumentar r\u00e1pidamente en n\u00famero; pero la verdadera importancia de un gran n\u00famero de huevos o semillas es compensar la mucha destrucci\u00f3n en alg\u00fan per\u00edodo de la vida, y este per\u00edodo, en la gran mayor\u00eda de los casos, es un per\u00edodo temprano. Si un animal puede de alg\u00fan modo proteger sus propios huevos y cr\u00edas, pueden producirse un corto n\u00famero, y, sin embargo, el promedio de poblaci\u00f3n puede mantenerse perfectamente; pero si son destruidos muchos huevos y cr\u00edas, tienen que producirse muchos, o la especie acabar\u00e1 por extinguirse. Para mantener el n\u00famero completo de individuos de una especie de \u00e1rbol que viviese un promedio de mil a\u00f1os ser\u00eda suficiente el que se produjese una sola semilla una vez cada mil a\u00f1os, suponiendo que esta semilla no fuese nunca destruida y que tuviese seguridad de germinar en un lugar adecuado. As\u00ed, pues, en todos los casos el promedio de un animal o planta depende s\u00f3lo indirectamente de sus huevos o semillas.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":" Efectivamente, el n\u00famero de indiv\u00edduos de una especie no depende s\u00f3lo del n\u00famero de huevos. 93. The only difference between organisms which annually produce eggs or seeds by the thousand, and those which produce extremely few, is, that the slow breeders would require a few more years to people, under favourable conditions, a whole district, let it be ever so large. The condor lays a couple of eggs and the ostrich a score, and yet in the same country the condor may be the more numerous of the two. The Fulmar petrel lays but one egg, yet it\u2026<\/p>\n","protected":false},"author":86,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[467,1,6726],"tags":[14300,14302],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":4}},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/posts\/134543"}],"collection":[{"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/users\/86"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/comments?post=134543"}],"version-history":[{"count":5,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/posts\/134543\/revisions"}],"predecessor-version":[{"id":136336,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/posts\/134543\/revisions\/136336"}],"wp:attachment":[{"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/media?parent=134543"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/categories?post=134543"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/tags?post=134543"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}