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Institut Sénégalais de
Recherches Agricoles
ÉTUDES ET DOCUMENTS
APPUI À LA GESTION TRANSFRONTALIÈRE
DES PÊCHERIES DE MULETS, DE COURBINE ET
DE TASSERGAL ENTRE LE SÉNÉGAL
ET LA MAURITANIE
Projet PARTAGE 2008-2012
ISSN 0850-8798 Vol 10 N° 1 2015
Synthèse des principaux résultats des
recherches menées par le CRODT
21
Étude des paramétres de croissance Mulet
jaune (Mugil cephalus) sur la Grande Côte du
Sénégal, Afrique de l’Ouest
Ismaïla NDOUR1
, Hamet Diaw DIADHIOU1
, Mor SYLLA1
Photo: Mulet jaune ( Mugil cephalus)
22
Résumé
L
a été réalisée à
Côte du Sénégal et sur
-
pêcheries de cette espèce.
Grande Côte - Sénégal
23
1. Introduction
-
-
-
2. Matériel et méthodes
2.1. Matériel
-
Figure 1
Kayar
Fass
Saint Louis
Sénégal
Mauritanie
Océan
atlantique
30 nmi
24
-
-
Figure 2: Mugil cephalus
2.2. Méthodes
2.2.1. Préparation des otolithes pour analyse
a) Inclusion dans de la résine
b) Coupe de l’otolithe
-
-
25
c) Fixation de l’otolithe sur lame et lamelle
-
d) Ponçage
2.2.2. Lecture et analyse des otolithes
Figure 3: Mugil cephalus -
-
26
Figure 4 Mugil cephalus -
b
a
2.3. Relations longueur poisson/poids et longueur otolithes
-
-
Figure 5
Mugil cephalus
2.4. Ajustement du modèle de Von Bertalanffy
-
27
-
-
)(
1 totK
eLLt
-
3. Résultats
3.1. Relation taille/âge
3.1.1. Relation taille du poisson/poids et longueur de l’otolithe
-
3.1.2. Relation longueur/largeur des otolithes
-
3.1.3. Modèle de croissance
28
-
Linf
K to
Figure 6 Mugil cephalus
29
4. Discussion
-
-
Tableau 1 Mu-
gil cephalus
-
Sud
Golf du
1999
-
-
30
-
5. Conclusion
-
31
Références
D -
Téléostéens
-
-
M. curema
Mugil
cephalus
Mugil cephalus
32
Annexe

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Étude de paramètres de croissance du mulet jaune (Mugil cephalus) sur la Grande côte du Sénégal, Afrique de l’Ouest