虹鳟（Oncorhynchus mykiss）生长与抗病能力的关系。

Relationships between growth and disease resistance in rainbow trout, Oncorhynchus mykiss (Walbaum).

机构信息

USDA-ARS, Hagerman Fish Culture Experiment Station, Hagerman, ID 83332, USA.

出版信息

J Fish Dis. 2010 Apr;33(4):321-9. doi: 10.1111/j.1365-2761.2009.01124.x. Epub 2010 Jan 3.

DOI:10.1111/j.1365-2761.2009.01124.x

PMID:20059633

Abstract

Rainbow trout from 23 families were evaluated for growth and resistance to the bacterial coldwater disease (BCWD) caused by Flavobacterium psychrophilum and infectious haematopoietic necrosis (IHN) caused by IHN virus. Average family weights were between 161 and 263 g with an average of 225 g at 213 days post-fertilization with specific growth rates ranging from 2.37 to 2.88. Per cent survival of fish challenged with F. psychrophilum was between 18% and 100%, while for those challenged with IHNV, the range was between 12% and 93%. Significant positive correlations were found for end body weight and resistance to IHN (P < 0.05) and for early body weight and resistance to BCWD (P < 0.1). However, no significant correlations were detected between resistance to both pathogens or disease resistance and overall genetic diversity or diversity within the major histocompatibility locus.

摘要

对 23 个家系的虹鳟进行了生长和对由嗜冷杆菌引起的冷水病（BCWD）以及由传染性造血器官坏死病毒（IHN 病毒）引起的传染性造血器官坏死病（IHN）的抗性评估。家系平均体重在 161 至 263 克之间，受精后 213 天的平均体重为 225 克，特定增长率在 2.37 至 2.88 之间。用嗜冷杆菌攻毒的鱼的存活率在 18%至 100%之间，而用 IHNV 攻毒的鱼的存活率在 12%至 93%之间。在终体重和对IHN 的抗性（P < 0.05）以及早期体重和对 BCWD 的抗性（P < 0.1）之间发现了显著的正相关关系。然而，在两种病原体的抗性或疾病抗性与整体遗传多样性或主要组织相容性基因座内的多样性之间，未检测到显著相关性。