Publication

2000-02

English

http://archimer.ifremer.fr/doc/2000/publication-682.pdf (0.18 Mo)

2000 Academic Press. All rights reserved

Cornillon Pierre-André, Pontier Dominique, Rochet Marie-Joelle

Univ Lyon 1, CNRS, UMR Biometrie & Biol Evolut 5558, F-69622 Villeurbanne, France.
IFREMER Nantes, Lab MAERHA, F-44311 Nantes 03, France.
CIRAD Foret, Programme Arbres & Plantat, Grp Biostat & Anal Syst, F-34032 Rennes, France.

Journal of Theoretical Biology (0022-5193) (Elsevier), 2000-02 , Vol. 202 , N. 4 , P. 247-256

6

Fishing, Ecology, Mathematics-Computer Science

Autoregressive method, Intraspecific variation, Fishing effect, Comparative method

Comparative methods are used to investigate the attributes of present species or higher taxa. Difficulties arise from the phylogenetic heritage: taxa are not independent and neglecting phylogenetic inertia can lead to inaccurate results. Within-species variations in life-history traits are also not negligible, but most comparative methods are not designed to take them into account. Taxa are generally described by a single value for each trait. We have developed a new model which permits the incorporation of both the phylogenetic relationships among populations and within-species variations. This is an extension of classical autoregressive models. This family of models was used to study the effect of fishing on six demographic traits measured on 77 populations of teleost fishes.