FN Archimer Export Format
PT J
TI Lipid nutrition and settlement behaviour in American lobster Homarus americanus
BT 
AF THERIAULT, I
   PERNET, Fabrice
AS 1:3;2:1,2;
FF 1:;2:PDG-DOP-LER-LERLR;
C1 Inst Rech Zones Cotieres, Shippegan, NB E8S 1J2, Canada.
   IFREMER, Lab Environnement Ressources, F-34203 Sete, France.
   Univ Moncton, Dept Biol, Moncton, NB E1A 3E9, Canada.
C2 IRZC, CANADA
   IFREMER, FRANCE
   UNIV MONCTON, CANADA
SI SETE
SE PDG-DOP-LER-LERLR
IN WOS Ifremer jusqu'en 2018
   copubli-int-hors-europe
IF 0.762
TC 10
UR https://archimer.ifremer.fr/doc/2007/publication-4651.pdf
LA English
DT Article
DE ;Settlement behaviour;Nutrition;Lipid;Habitat selection;Fatty acid;Crustacean larvae
AB This study examines the effects of varying dietary lipids on growth, survival, lipid composition and behaviour in lobster Homarus americanus (Milne Edwards, 1837) postlarvae. Lobsters were fed one of 3 diets during their early ontogeny: (1) Artemac, a widely used Artemia replacement; (2) a ternary mixture consisting of Artemac, frozen Artemia adults and Artemia flakes; or (3) a mixture of live A. salina nauplii and adults. We evaluated the olfactory capacity (response to predator odour plume) and cryptic behaviour (ability to hide during settlement) of lobster postlarvae as a function of these diets and the lipid and the fatty acid composition of lobsters. Growth and survival of lobster postlarvae were highest in those fed live Artemia, followed by the ternary mix, then Artemac. The low performance of lobster postlarvae fed Artemac may be attributable to dietary deficiencies in phospholipids (PLs) or 20:4n-6 and coincided with low levels of endogenous triacylglycerols (TAG). Those lobsters fed live Artemia showed low levels of 22:6n-3 and 20:5n-3 compared to levels occurring in wild animals. Here we report the selective incorporation of 20:4n-6, 20:5n-3 and 22:6n-3 to polar lipids and, to a lesser extent, to neutral lipids in lobsters. Finally, lobster postlarvae fed the 3 experimental diets responded to a predator odour plume by reducing their activity levels and increasing the time spent swimming downstream. However, lobster settlement behaviour varied as a function of the diet: low-performing lobsters fed Artemac were less active than those fed the other diets, presumably due to low levels of endogenous TAG or changes in dietary long-chain PUFA.
PY 2007
PD NOV
SO Aquatic Biology
SN 1864-7790
PU Inter-Research
VL 1
UT 000259452200003
BP 121
EP 133
DI 10.3354/ab00015
ID 4651
ER

EF