Western Fisheries Research Center

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SPF Pacific herring
September 26, 2008

Specific Pathogen-Free (SPF) Pacific herring

Specific Pathogen-Free (SPF) Pacific herring reared in the wet laboratory at the Marrowstone Marine Field Station.

September 8, 2008

3MS18 (L1) West Transect – 2008

Random Site: 3MS18 (L1) West Transect; Depth: 10.9 m (35.9 feet); Distance from river mouth: 2.3 Kilometers (1.4 Miles) west; Pre/Post Dam Removal: 3 year pre-dam removal; Lat/Long: 48.13957527,-123.59427175; Site Description: This transect is medium depth with substrate that varies from all fine sediment/sand/mud, some on top of bedrock, to areas of large boulders. Large

September 7, 2008

6MH18 (J1) East Transect – 2008

Permanent Site: J1 East Transect; Depth: 9.5 Meters (31.2 Feet); Distance from river mouth: 6.7 Kilometers (4.1 Miles) east; Pre/Post Dam Removal: 1 year pre-dam removal; Lat/Long: ; Site Description: This site is medium depth. Substrates is a gravel/cobble/sand mixture with an occasional boulder. Seaweed is abundant, especially three-ribbed kelp Cymathere triplicata (0:21

September 7, 2008

6MH18 (J1) West Transect – 2008

Permanent Site: J1 West Transect; Depth: 9.2 Meters (30.2 Feet); Distance from river mouth: 6.6 Kilometers (4.1 Miles) east; Pre/Post Dam Removal: 1 year pre-dam removal; Lat/Long: 48.13607725,-123.48002186; Site Description: This site is medium depth. Substrates is a gravel/cobble/sand mixture with an occasional boulder. Seaweed is abundant, especially three-ribbed kelp

August 24, 2008

5SM18 East Transect – 2008

Random Site: 5SM18 East Transect; Depth: 6.7 Meters (22.0 Feet); Distance from river mouth: 4.5 Kilometers (2.8 Miles) east; Pre/Post Dam Removal: 3 years pre-dam removal; Lat/Long: 48.1357869,-123.5095144; Site Description: This is a shallow site. Sediment is a gravel/sand mixture. Red, green and brown seaweed is abundant. Six species of browns were recorded including

August 24, 2008

5SM18 West Transect – 2008

Random Site: 5SM18 West Transect; Depth: 6.1 Meters (20 Feet); Distance from river mouth: 4.5 Kilometers (2.8 Miles) east; Pre/Post Dam Removal: 3 years pre-dam removal; Lat/Long: 48.13592923,-123.51082988; Site Description: This is a shallow site. Sediment is a gravel/sand mixture. Red, green and brown seaweed is abundant. Six species of browns were recorded including

Researcher collects particle size analysis samples
March 6, 2008

Researcher collects particle size analysis samples

Gary Barton (USGS) collects particle size analysis samples of the surface riverbed material of the Kootenai River about three miles upstream from Bonners Ferry, ID.

Virus-exposed fathead minnow
January 22, 2007

Investigation and Disease Prevention of Spring Viremia of Carp Virus

Typical clinical signs of SVC disease, exopthalmia and abdominal distension with hemorrhaging seen in a virus-exposed fathead minnow.

Appearance of descaling site exposed to fast green FCF dye
October 31, 2006

Figure 1. Appearance of Descaling Site Exposed to Fast Green FCF Dye

Figure 1. Appearance of descaling site exposed to fast green FCF dye six hours after intentional descaling injury, showing loss of scales and presence of fast green staining. Areas of unintentional integumental injury are also stained (arrows).

Related image Figure 2.

Scanning electron micrograph of descaling area
October 31, 2006

Figure 2. Scanning Electron Micrograph of Descaling Area

Figure 2. Scanning electron micrograph of descaling area delimited by box in Figure 1 showing epidermal disruption, empty scale pockets and an exposed scale with visible concentric ridges (upper right). Scale bar = 500 µm.

Figure 3. Appearance of Descaling Site Exposed to Fast Green FCF Dye
October 30, 2006

Figure 3. Appearance of Descaling Site Exposed to Fast Green FCF Dye

Figure 3. Appearance of descaling site exposed to fast green FCF dye 96 hours after intentional descaling injury, showing lack of scales, presence of fast green staining in areas of epidermal disruption and absence of staining in areas where migrating epidermal cells have closed the wound.

 Related image

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Figure 4. Scanning Electron Micrograph of Descaling Area
October 30, 2006

Figure 4. Scanning Electron Micrograph of Descaling Area

Figure 4.  Scanning electron micrograph of descaling area delimited by box in Figure 3 showing epidermal disruption (arrows), empty scale pockets and restoration of epidermal integrity (asterisk). An exposed scale with visible concentric ridges is visible at the lower center. Scale bar = 500 µm.