Effects of the parasite Probopyrus ringueleti (Isopoda) on glucose, glycogen and lipid concentration in starved Palaemonetes argentinus (Decapoda)

Diseases of Aquatic Organisms

Euclydes A. Santos¹  Luiz Eduardo Maia Nery¹  Carla Amorim Neves¹  Maria Paz Sampedro Pastor¹ 

关键词: Palaemonetes · Probopyrus · Parasitism;    Carbohydrates;    Lipids;    Starvation;   

DOI  :  10.3354/dao058209

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: Effects of the branchial ectoparasite isopod Probopyrus ringueleti on the utilization of glucose, glycogen and total lipids on starved shrimp Palaemonetes argentinus were evaluated, as well as the isopod responses to hoststarvation. Shrimp were maintained for 12 d under laboratory conditions. Parasitized and unparasitized shrimp were starved for 15 d, and glucose, glycogen and total lipid concentrations were determined at 0, 24, 72, 168 and 360 h of starvation. Duringstarvation, control animals (unparasitized) preferentially metabolized lipids and preserved their carbohydrate reserves. Parasitized shrimp had lower lipid concentrations than unparasitized shrimp, and preferentially metabolized carbohydrates. Bopyridsdisplayed a similar response, with glycogen depleted at the beginning of the starvation period followed by subsequent reestablishment. Our results demonstrated that bopyrids affect host energy allocation. The lower initial lipid concentration ofparasitized shrimp suggested that the host is disadvantaged from both food deprivation and isopod nutritional demands. A possible dependency of P. ringueleti on the mechanisms that control host metabolic processes was also suggested.

【 授权许可】

Unknown