Population dynamics of the krill Meganyctiphanes norvegica (M Sars, 1857) (Crustacea: Euphausiacea) in the Ligurian Sea (NW Mediterranean sea). Size structure, growth and mortality modelling
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Oui |
| Statut de publication | : | Publié |
| Année de publication | : | 1996 |
| Auteurs (2) | : | LABAT Jean-philippe CUZIN-ROUDY Jeannine |
| Revue scientifique | : | Journal of Plankton Research |
| Volume | : | 18 |
| Fascicule | : | 12 |
| Pages | : | 2295-2312 |
| DOI | : | 10.1093/plankt/18.12.2295 |
| URL | : | <go to isi>://wos:a1996wa27900006 |
| Abstract | : | The seasonal abundance, population structure and dynamics of the euphausiid Meganyctiphanes norvegica were studied from samples taken year round in the NW Mediterranean Sea Length-frequency distributions were generally bimodal: the first mode was interpreted as the born-in-the-year cohort (0+) and the second as a combination of the older age classes (1+). To describe growth, a bilinear function provides the best fit. A growth rate of 0.052 mm day(-1) (1.56 mm month(-1)) was calculated for the first part of the growth function and 0.0034 mm day(-1) for the second part. A negative exponential mortality function was fitted, giving a mortality rate of 0.0034 day(-1) (1.25 year(-1)). A numerical simulation of the size structure of the Ligurian population was performed and the validity of the model was checked using a multifactorial analysis. The demographic characteristics of the Ligurian population were compared to those of other areas and were interpreted as a functional adaptation of M.norvegica to the southern part of the geographical distribution of the species. |
| Mots-clés | : | - |
| Commentaire | : | Times Cited: 31 31 |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Labat J-P, Cuzin-Roudy J (1996) Population dynamics of the krill Meganyctiphanes norvegica (M Sars, 1857) (Crustacea: Euphausiacea) in the Ligurian Sea (NW Mediterranean sea). Size structure, growth and mortality modelling. J Plankton Res 18: 2295-2312 | doi: 10.1093/plankt/18.12.2295
|