Relació entre grandària i nombre d'ous en un copèpode d'aigua dolça Authors Tecla Riera Abstract Both in poikylotherms and in homeotherms there is a clear relationship between the animal's body size and the number of eggs laid. Not only the egg number, but the individual egg size varies; usually, there is an inverse relation between them. In a sense, the variation being more accused in the number than in the size can be thought as an expression of oppossed evolutionary strategies or trends. This study is intended to show the real relationship between the egg number and size and the individual size in the freshwater copepod Tropocyclops prasinus from Spanish dams. The copepods from northern water masses have a greater egg number than those from southern impoundments. The allometric relation between body size and egg number nears 3, but if the volume of an oviger sac germ mass is considered the relation is more clear-cut. Egg size varies less than egg number; when the copepod size increases the egg number also increases, not its size. That is to say, the metabolism of the somatic and germ cells is differently influenced by the environmental conditions. Downloads Download data is not yet available. Downloads Text complet (Català) Published 2005-05-10 Issue Vol. 49 : 1983 (Secció de Zoologia, 5) Section Articles License The intellectual property of articles belongs to the respective authors.On submitting articles for publication to the journal Butlletí de la Institució Catalana d'Història Natural authors accept the following terms:Authors assign to Institució de la Societat Catalana d’Història Natural (a subsidiary of Institut d’Estudis Catalans) the rights of reproduction, communication to the public and distribution of the articles submitted for publication to Butlletí de la Institució Catalana d'Història Natural.Authors answer to Institució de la Societat Catalana d’Història Natural for the authorship and originality of submitted articles.Authors are responsible for obtaining permission for the reproduction of all graphic material included in articles.Institució de la Societat Catalana d’Història Natural declines all liability for the possible infringement of intellectual property rights by authors.The contents published in the journal, unless otherwise stated in the text or in the graphic material, are subject to a Creative Commons Attribution-NonCommercial-NoDerivs (by-nc-nd) 3.0 Spain licence, the complete text of which may be found at https://creativecommons.org/licenses/by-nc-nd/3.0/es/deed.en. Consequently, the general public is authorised to reproduce, distribute and communicate the work, provided that its authorship and the body publishing it are acknowledged, and that no commercial use and no derivative works are made of it.The journal Butlletí de la Institució Catalana d'Història Natural is not responsible for the ideas and opinions expressed by the authors of the published articles.