@article{10272/22569,
year = {2000},
url = {https://hdl.handle.net/10272/22569},
abstract = {The age structure, growth and reproduction of Lepomis gibbosa (L. 1758) (= L. gibbosus) was studied from March 1993 to
September 1994 in a tributary stream of the Guadalquivir River. The maximum age observed was 5+ years both in males and
females. In the O+ group, seasonal growth began in February and lasted 8 months. Males and females matured during their second
year of life (l+). There were no significant differences in the overall sex-ratio, which was 1: 1.1 (677 males to 745 females).
Reproductive activity started in MarcWApril and lasted until AugusUSeptember. During this period, females spawned 2 batches
of eggs. The relationship between fecundity (F) and fork length (&, mm) was: F=5.09 % 279 (1993) and F=85.81 L, ' 56
(1994). The maximum contribution to the fecundity of the population was observed in the 4+ female group. The reproductive
effort was maximun in the 3+ group. Compared with the American pumpkinseed populations that have been studied, the lifehistory
patterns of this stock are characterized by low annual growth, early maturity, reduced longevity and low fecundity.},
publisher = {Asociación Ibérica de Limnología},
title = {Age-structure, growth and reproduction of the introduced pumpkinseed (lepomis gibbosa, l. 1758) in a tributary of the Guadalquivir river (southern Spain)},
author = {Gutiérrez Estrada, Juan Carlos and Pulido Calvo, Inmaculada and Fernández Delgado, C.},
}