Oregon Sea Grant

Cyprinid herpesvirus 1 (CyHV1) infects all scaled and color varieties of common carp Cyprinus carpio, including koi. While it is most often associated with unsightly growths known as ‘carp pox,’ the underlying lesion (epidermal hyperplasia) can arise from a variety of disease processes. CyHV1-induced epidermal hyperplasia may occur transiently in response to water temperature, and thus histopathology cannot be used in isolation to assess CyHV1 infection status.

Koi herpesvirus (KHV) is highly pathogenic to Cyprinus carpio. KHV can also become latent in recovered fish and reactivate from latency under stressful conditions. Understanding KHV latency is important for development of strategies against herpesvirus latent infection. Our previous studies found KHV ORF6 mRNA is detectable during latent infection. In this study, ORF6 protein expression was investigated by a polyclonal antibody specific to ORF6 peptide.

Koi herpesvirus (KHV) is a highly pathogenic virus of common carp and koi. KHV becomes latent in recovered koi or exposed koi without symptoms, and the latent infection can reactivate under stress conditions. KHV reactivation from latency often occurs when water temperature rapidly rises above 17 °C. Dissolved O2 is lower at ≥17 °C than at non-stress temperatures ≤15 °C.

barnacle.jpg

This issue of Confluence includes articles on:

In Spain, gooseneck barnacles, “percebes,” are an overfished delicacy fetching a high market price ($50/lb.). Oregon fishing communities show interest in developing a percebes market utilizing Pollicipes polymerus. The incormation compiled in this report aims to inform resource managers to avoid over harvesting Oregon goosenecks.

In summer 2016, researchers investigated the current status of P. polymerus populations with three primary objectives:

A. Describe Oregon gooseneck populations on coastal jetties to inform harvest management.

This series of 16 videos is a behind the scenes look at the people and industry that rely upon the working waterfronts of the Oregon Coast. These online videos can be found on YouTube at the following links:

Oregon's Working Waterfront Tour trailer

Oregon's Working Waterfront Tour: Charleston 

Pacific salmon (Oncorhynchus spp.) are among the most highly valued and widely
available aquaculture species. They are also among the most critically endangered wild
fishes in their native ranges. They are the subjects of numerous studies ranging from
practical management and intensive aquaculture production to some of the most
important investigations of behavior and genetics of any vertebrates. Those studies have
provided a comprehensive background for testing critical hypotheses on life history and

From River to Retail: A Fish's Journey

Ever wonder where the fish in your freshwater home aquarium came from? At one point, they may have been swimming in Brazil's Rio Negro, the largest tributary of the Amazon River. The Rio Negro is home to more than 800 different kinds of fish, including tetras, discuses, angelfish and cichlids. It's also the source of an important sustainable aquarium fishery.