Summary of 2013 juvenile salmonid acoustic telemetry behavior study at the Bureau of Reclamation Tracy Fish Collection Facility
Cathy Karp, Brandon Wu
Bureau of Reclamation Denver Technical Services Center
In spring 2013, we released acoustically tagged juvenile Chinook salmon (n=69, 136.2 mm mean fork length, late‐fall run Coleman ational Fish Hatchery), juvenile steelhead (n=64, 198.7 mm mean fork length, Mokelumne River Fish Hatchery), and adult striped bass (n=36, 510 mm mean fork length, collected by angling and predator removals) at the Bureau of Reclamation’s Tracy Fish Collection Facility, Tracy, CA, to begin to quantify fish losses to predation and facility structure (louver/bypasses). A system of 21 acoustic telemetry hydrophones were set up upstream, within, and
downstream of the fish facility. Fish were released over a 3 day experimental period in March and May. Flow conditions ranged from 0.6 to 2.9 fps in the primary channel and 2.5 to 2.8 fps in the secondary channel (flows were highest on day 1, intermediate on
day 2 and lowest on day 3), beginning at 7am each day for 24 h. Fish releases were conducted during both day and night conditions (8am, 11am, 2pm, 8pm, 11pm, 2am for salmonids; 8am, 4pm, 12am for striped bass) during each 24 h flow condition. A total of 37 tagged salmonids (28 Chinook salmon, 9 steelhead) were recovered in the holding tanks and exhibited a wide range of behavior. Twenty‐nine fish were lost to predation and louvers (24 Chinook salmon, 5 steelhead). Acoustic telemetry data for the remaining fish are still being analyzed for the time following each 24 study period and include fate categories of swim‐out and non‐participation. The striped bass released into the facility remained while those released in front of the trash rack mostly left (1 as far as Red Bluff on the upper Sacramento River).
____________________
Brian vinci-presentation-of-an-economic-model-comparing-open-net-and-land-bas...George Stefanov
Здравейте Г-н Качаров,
За повече яснота относно технологията и специфичността на RAS(Recircullation Aquaculture Systems), рециркулационни затворени системи, тяхната по голяма ефективност по отношение на себестойност на единица продукция, време за добив, контрол и сигурност на продукцията в сравнение с отворени системи, както и подобни такива съоръжения изградени или в процес на изграждане, Ви прилагаме доклад на Conservation Fund USA и Bilund Aquaculture.
Също бих искал да допълня,че сме в контакт и предварителна апликация за сертифициране от Institute for Marketecology (IMO), Швейцария за AquaGAP и ASC(Aquaculture Stewardship Council) сертификати.
Поздрави,
Георги Стефанов
Кохо Ферм ООД
тел.0884533417
Андрей Гевак, Важность первой сессии в приложении. Кейсы Яндекс.МузыкиScrumTrek
Мы в Яндекс.Музыке когда-то не ценили первую сессию и мало работали над активацией. А когда поняли насколько это важно, то многое переделали и сильно выросли в своих KPI. Доклад про то, как проектировать "легкий старт" и на что обратить внимание. Основан на реальных событиях, снабжен реальными цифрами, нацелен вдохновлять.
Summary of 2013 juvenile salmonid acoustic telemetry behavior study at the Bureau of Reclamation Tracy Fish Collection Facility
Cathy Karp, Brandon Wu
Bureau of Reclamation Denver Technical Services Center
In spring 2013, we released acoustically tagged juvenile Chinook salmon (n=69, 136.2 mm mean fork length, late‐fall run Coleman ational Fish Hatchery), juvenile steelhead (n=64, 198.7 mm mean fork length, Mokelumne River Fish Hatchery), and adult striped bass (n=36, 510 mm mean fork length, collected by angling and predator removals) at the Bureau of Reclamation’s Tracy Fish Collection Facility, Tracy, CA, to begin to quantify fish losses to predation and facility structure (louver/bypasses). A system of 21 acoustic telemetry hydrophones were set up upstream, within, and
downstream of the fish facility. Fish were released over a 3 day experimental period in March and May. Flow conditions ranged from 0.6 to 2.9 fps in the primary channel and 2.5 to 2.8 fps in the secondary channel (flows were highest on day 1, intermediate on
day 2 and lowest on day 3), beginning at 7am each day for 24 h. Fish releases were conducted during both day and night conditions (8am, 11am, 2pm, 8pm, 11pm, 2am for salmonids; 8am, 4pm, 12am for striped bass) during each 24 h flow condition. A total of 37 tagged salmonids (28 Chinook salmon, 9 steelhead) were recovered in the holding tanks and exhibited a wide range of behavior. Twenty‐nine fish were lost to predation and louvers (24 Chinook salmon, 5 steelhead). Acoustic telemetry data for the remaining fish are still being analyzed for the time following each 24 study period and include fate categories of swim‐out and non‐participation. The striped bass released into the facility remained while those released in front of the trash rack mostly left (1 as far as Red Bluff on the upper Sacramento River).
____________________
Brian vinci-presentation-of-an-economic-model-comparing-open-net-and-land-bas...George Stefanov
Здравейте Г-н Качаров,
За повече яснота относно технологията и специфичността на RAS(Recircullation Aquaculture Systems), рециркулационни затворени системи, тяхната по голяма ефективност по отношение на себестойност на единица продукция, време за добив, контрол и сигурност на продукцията в сравнение с отворени системи, както и подобни такива съоръжения изградени или в процес на изграждане, Ви прилагаме доклад на Conservation Fund USA и Bilund Aquaculture.
Също бих искал да допълня,че сме в контакт и предварителна апликация за сертифициране от Institute for Marketecology (IMO), Швейцария за AquaGAP и ASC(Aquaculture Stewardship Council) сертификати.
Поздрави,
Георги Стефанов
Кохо Ферм ООД
тел.0884533417
Андрей Гевак, Важность первой сессии в приложении. Кейсы Яндекс.МузыкиScrumTrek
Мы в Яндекс.Музыке когда-то не ценили первую сессию и мало работали над активацией. А когда поняли насколько это важно, то многое переделали и сильно выросли в своих KPI. Доклад про то, как проектировать "легкий старт" и на что обратить внимание. Основан на реальных событиях, снабжен реальными цифрами, нацелен вдохновлять.
A recently started project exploring microbial populations attaching to plastic when inmersed in the ocean. Floating plastic (#2, #4, and #5) are deployed in coastal waters for varying times, and DNA extracted for 16S rRNA metagenomic sequencing. Validation of the sampling methodology and preliminary data are shown.
NYC DEP update on Ribbed Mussel potential for treating pathogens in water bodiesecowatchers
John Mcloughlin managing director of NYC DEP office of Ecosystem services and Green infrastructure research gives updates on the research they have done on using natural features such as ribbed mussels to remove pathogens from water bodies
A recently started project exploring microbial populations attaching to plastic when inmersed in the ocean. Floating plastic (#2, #4, and #5) are deployed in coastal waters for varying times, and DNA extracted for 16S rRNA metagenomic sequencing. Validation of the sampling methodology and preliminary data are shown.
NYC DEP update on Ribbed Mussel potential for treating pathogens in water bodiesecowatchers
John Mcloughlin managing director of NYC DEP office of Ecosystem services and Green infrastructure research gives updates on the research they have done on using natural features such as ribbed mussels to remove pathogens from water bodies
7. SEA WATCH INTERNATIONAL
• FOCUSED ON CLAMS SINCE 1978
• LARGEST RESOURCE ALLOCATION OF
DOMESTIC SEA & OCEAN CLAMS
• NEW BEDFORD PLANT, 1994
• DIRECT BOAT TO DOCK PROCESSING
• HYDRAULIC DREDGING
• INDIVIDUAL QUICK FREEZE
13. SAMPLES
TREATMEN
T A:
CONTROL
• Untreated
minced ocean
clams
• Collected from
conveyor
• 30 lbs = 2 X 15
lbs samples
TREATMENT
B: GMI
• Clams with
standard GMI
marinade &
processing
• Collected from
tumbler
• 30 lbs = 2 X 15
lbs samples
TREATMEN
T C: PURAC
• Clams with 2.5%
by (clam) weight
Purac &
standard
processing
• Collected from
tumbler
• 30 lbs = 2 X 15
lbs samples
TREATMENT
D:
PURAC+GMI
• Clams with
2.5% by (clam)
weight Purac &
GMI marinade
• Collected from
tumbler*
• 60 lbs = 4 X 15
lbs samples
14. HOLDING CONDITIONS
• Control + treated samples (4 X 15 lbs) held at 1°C for 31 days
• Frozen Samples (duplicate, 4 X 15 lbs) held at -20°C for possible
later studies
16. ADDITIONAL TESTING
• Sensory Evaluations
• Overall appearance
• Odor(s)
• pH
• ThermoScientific pH
monitor
• Every sampling day
• Salt Content
• External Lab
• Total moisture
• Difference in ‘wet’ weight
and ‘dry’ weight
• Once a week
• Water activity
• Decagon Aqua Lab
• Once a week
21. CONCLUSIONS
• Temperature and processing have an effect
• The Purac+GMI treatment is not effective
• Observed how preservatives work
• Determine the shelf life of refrigerated minced ocean clams
• Extend the shelf life to 20 days with…
23. REFRIGERATED MINCED
OCEAN CLAMS SHELF
LIFE STUDY
HOLLY MODLIN
SEA FOOD LABORATORY
THE CENTER FOR MARINE SCIENCES AND
TECHNOLOGY
NC STATE UNIVERSITY
Editor's Notes
Contracted by GM, SW currently IQFs and then sends off to GM for canned clam chowders. 2 day thaw period, increase manufacturing efficiency want to be able to use out of fridge – we come in to ensure product remains unspoiled
40% left behind
Sensory qualities important determining spoilage
Dredge selects for larger clams
1/8
Can process two boat loads in one half a day shift
Tons of clams
we chose to use a commercially available blend of sodium lactate and sodium diacetate
GMI current marinade uses soy (flavor) and sodium phosphate (water binding)
Bacterial growth curve
Dissociation – bacterial cells spend energy trying to maintain homeostasis (get protons out or adjust for them), limiting the energy they can use to grow, affecting pH-different bacteria need different pH to grow, types of bacteria able to grow are limited by temp, salt and pH
pH stabilizer
Lower water activity – bound water isn’t free for bacteria to use to grow
Standard plate count agar + 2% salt
Incubate at
35°C for 48 hours, mesophilic bacteria levels
20°C for 96 hours, psychrotrophic bacteria levels
Aerobic plate counts (cfu/g) taken 3 times a week for 31 days
Typical ‘spoiled’ APC: 5 X 105 cfu/g
