scholarly journals Effect of nitrite on immune response of Taiwan abalone Haliotis diversicolor supertexta and its susceptibility to Vibrio parahaemolyticus

2004 ◽  
Vol 60 ◽  
pp. 157-164 ◽  
Author(s):  
W Cheng ◽  
IS Hsiao ◽  
JC Chen
Keyword(s):  
Immune Response ◽  
Vibrio Parahaemolyticus ◽  
Haliotis Diversicolor ◽  
Haliotis Diversicolor Supertexta ◽  
Diversicolor Supertexta

scholarly journals Dual Transcriptomic Analysis Reveals a Delayed Antiviral Response of Haliotis diversicolor supertexta against Haliotid Herpesvirus-1

Viruses ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 383 ◽  
Author(s):  
Bai ◽  
Zhang ◽  
Li ◽  
Xin ◽  
Rosani ◽  
...  
Keyword(s):  
Immune Response ◽  
Early Stage ◽  
Immune Surveillance ◽  
Host Immune Response ◽  
Haliotis Diversicolor ◽  
Effective Strategies ◽  
Haliotis Diversicolor Supertexta ◽  
Abalone Species ◽  
Herpesvirus 1 ◽  
Diversicolor Supertexta

Haliotid herpesvirus-1 (HaHV-1) is the first identified gastropod herpesvirus, causing a highly lethal neurologic disease of abalone species. The genome of HaHV-1 has been sequenced, but the functions of the putative genes and their roles during infection are still poorly understood. In the present study, transcriptomic profiles of Haliotis diversicolor supertexta at 0, 24 and 60 h post injection (hpi) with HaHV-1 were characterized through high-throughput RNA sequencing. A total of 448 M raw reads were obtained and assembled into 2.08 × 105 unigenes with a mean length of 1486 bp and an N50 of 2455 bp. Although we detected increased HaHV-1 DNA loads and active viral expression at 24 hpi, this evidence was not linked to significant changes of host transcriptomic profiles between 0 and 24 hpi, whereas a rich immune-related gene set was over-expressed at 60 hpi. These results indicate that, at least at the beginning of HaHV-1 infection, the virus can replicate with no activation of the host immune response. We propose that HaHV-1 may evolve more effective strategies to modulate the host immune response and hide during replication, so that it could evade the immune surveillance at the early stage of infection.

Withering Syndrome of the Small Abalone, Haliotis diversicolor supertexta, Is Caused by Vibrio parahaemolyticus and Associated with Thermal Induction

2001 ◽  
Vol 56 (9-10) ◽  
pp. 898-901 ◽  
Author(s):  
C.-Y. Huang ◽  
P.-C. Liu ◽  
K.-K. Lee
Keyword(s):  
Vibrio Parahaemolyticus ◽  
Bacterial Challenge ◽  
Haliotis Diversicolor ◽  
Haliotis Diversicolor Supertexta ◽  
Different Temperatures ◽  
Higher Temperature ◽  
Withering Syndrome ◽  
Small Abalone ◽  
Thermal Induction ◽  
Diversicolor Supertexta

Abstract The susceptibility of the small abalone Haliotis diversicolor supertexta to Vibrio parahae­molyticus 880915 strain and its extracellular products (ECP) at different temperatures was investigated. The strain was previously isolated from the haemolymph of the moribund small abalone with withering syndrome during an outbreak of mass mortality among the cultured animals in September 1999 in I-Lan, Taiwan. The bacterium and its ECP were lethal to the small abalone. Onset of the withering syndrome in the moribund or dead animals could be observed at 4 -7 d post-bacterial challenge. The same bacterial strain could be isolated from the haemolymph of the moribund animals with or without the syndrome post-bacterial challenge. This syndrome could not be observed in the moribund or dead animals post-ECP challenge. The animals were more susceptible to the bacterium and ECP challenge at higher temperature (28 °C) indicating that the outbreak of the disease in warmer season is associated with thermal induction.

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