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2020 Northwestern Hawaiian Islands Field Season Highlights: Celebrating Partners

December 3, 2020 — The following was released by NOAA Fisheries:

Typically, the Pacific Islands Fisheries Science Center deploys field teams during the spring and summer to the Papahānaumokuākea Marine National Monument. There, they conduct research and rescue activities for threatened green sea turtles and endangered Hawaiian monk seals at five key breeding sites: French Frigate Shoals, Laysan and Lisianski Islands, Pearl and Hermes Reef, and Kure Atoll. The teams also conduct surveys during short visits at the Nihoa and Mokumanamana (Necker) Islands and Midway Atoll. Due to the uncertainties created by the COVID-19 pandemic, NOAA Fisheries decided to cancel this survey and field effort for 2020. Fortunately for the conservation of these species, our partners were able to step up and  salvage part of the 2020 field season. Data are also coming in from satellite tags on a handful of monk seals and a green turtle.

We have conducted field studies in the Northwestern Hawaiian Islands for 47 years for sea turtles and 36 years for monk seals. These islands and atolls are nesting habitat for more than 90 percent of Hawaiian green sea turtles and 75 percent of the Hawaiian monk seal population (about 1,100 seals). These invaluable long-term datasets provide current population statuses and trends and insight on how climate change is affecting these animals and their habitat. Combined, this information guides management and recovery actions.

Read the full release here

2020 Northwestern Hawaiian Islands Field Season Highlights: Celebrating Partners

November 20, 2020 — The following was released by NOAA Fisheries:

Typically, the Pacific Islands Fisheries Science Center deploys field teams during the spring and summer to the Papahānaumokuākea Marine National Monument. There, they conduct research and rescue activities for threatened green sea turtles and endangered Hawaiian monk seals at five key breeding sites: French Frigate Shoals, Laysan and Lisianski Islands, Pearl and Hermes Reef, and Kure Atoll. The teams also conduct surveys during short visits at the Nihoa and Mokumanamana (Necker) Islands and Midway Atoll. Due to the uncertainties created by the COVID-19 pandemic, NOAA Fisheries decided to cancel this survey and field effort for 2020. Fortunately for the conservation of these species, our partners were able to step up and  salvage part of the 2020 field season. Data are also coming in from satellite tags on a handful of monk seals and a green turtle.

We have conducted field studies in the Northwestern Hawaiian Islands for 47 years for sea turtles and 36 years for monk seals. These islands and atolls are nesting habitat for more than 90 percent of Hawaiian green sea turtles and 75 percent of the Hawaiian monk seal population (about 1,100 seals). These invaluable long-term datasets provide current population statuses and trends and insight on how climate change is affecting these animals and their habitat. Combined, this information guides management and recovery actions.

Read the full release here

HAWAII: NOAA seeking volunteers for fish count

September 30, 2020 — The Pacific Islands Fisheries Science Center is launching a new citizen science project called OceanEYEs. We are seeking volunteers to help find Deep 7 bottomfish in underwater videos.

A student in the Young Scientist Opportunity program and our scientists have partnered with Zooniverse.org to develop a user-friendly web page called OceanEYEs. There, citizen scientists can help review images from our annual bottomfish survey, tagging and identifying all the fish that they see. Scientists can then use those data to train advanced artificial intelligence (AI) tools, to look at different ways of counting fish in video. The data can also be used as information for stock assessments.

The images are collected every year during the Bottomfish Fishery-Independent Survey in Hawaii (#BFISH) using state of the art stereo-camera systems. The survey provides an estimate of the number of “Deep 7” bottomfish. That’s a group of seven species of fish that have both economic and cultural value to the islands. The data from this survey are used in the Deep 7 stock assessment to provide managers with the best information to make management decisions. That includes annual commercial fishery catch limits.

Read the full story at The Garden Island

Citizen Scientists Help Count Deep-7 Bottomfish in Hawaiʻi

September 16, 2020 — The following was released by NOAA Fisheries:

The Pacific Islands Fisheries Science Center is launching a new citizen science project called OceanEYEs. We are seeking volunteers to help find Deep 7 bottomfish in underwater videos.

A student in the Young Scientist Opportunity program and our scientists have partnered with Zooniverse.org to develop a user-friendly web page called OceanEYEs. There, citizen scientists can help review images from our annual bottomfish survey, tagging and identifying all the fish that they see. Scientists can then use those data to train advanced artificial intelligence (AI) tools, to look at different ways of counting fish in video. The data can also be used as information for stock assessments.

The images are collected every year during the Bottomfish Fishery-Independent Survey in Hawaii (#BFISH) using state of the art stereo-camera systems. The survey provides an estimate of the number of “Deep 7” bottomfish. That’s a group of seven species of fish that have both economic and cultural value to the islands. The data from this survey are used in the Deep 7 stock assessment to provide managers with the best information to make management decisions. That includes annual commercial fishery catch limits.

The camera systems, which rest on the seafloor for 15 minutes at a time, record hundreds of thousands of images over the course of the survey. NOAA scientists currently analyze these images but, as you can imagine, the number of images collected during survey operations can quickly overwhelm them.

NOAA has been investing heavily in the development of AI solutions, allowing scientists to use machine learning and computer vision to analyze images. However, for the machine to learn, it requires large numbers of training images. Those are images of fish that a human has already tagged and identified.

Read the full release here

Four-year forecasts possible for Hawaii bigeye tuna fishery

August 14, 2020 — Measuring the extent of microscopic ocean plant life around Hawaii could reliably predict bigeye tuna catch rates four years out for Hawaii’s deep-set longline fleet, according to a new study by researchers at the Pacific Islands Fisheries Science Center.

“Bigeye tuna are the primary target species of Hawaii’s most valuable commercial fishery, a longline fishery with landings that are valued at over $100 million and that account for nearly half the United States tuna landings,” NMFS scientists Phoebe A. Woodworth-Jefcoats and Johanna L. K. Wren wrote in their study, published July 22 in the journal Fisheries Oceanography.

“A reliable predictor of targeted species catch rates could help the fishery time fishing activity and plan capital improvements. It could also potentially inform adaptive management and facilitate ecosystem‐based fisheries management.”

Using routine oceanographic measurements including satellite data for sea surface chlorophyll and temperature, the researchers calculated the median size of microscopic plants, called phytoplankton, over the calendar year and the extent of the fishery area around the Hawaiian Islands.

Read the full story at National Fisherman

NOAA hires directors of offices of science and technology, sustainable fisheries

July 20, 2020 — NOAA has hired a new director of its Office of Science and Technology and director of its Office of Sustainable Fisheries.

Evan Howell, previously the deputy director for the Pacific Islands Fisheries Science Center, has been hired to head the Office of Science and Technology, where he will “advocate and ensure a sound scientific basis for NOAA Fisheries science programs and resource conservation and management decisions,” according to the agency. In his role, Howell will coordinate the work being done at six NOAA Fisheries science centers in the U.S. Northeast, Northwest, Pacific Islands, Southeast, Southwest, and Alaska.

Read the full story at Seafood Source

Feds Set to Address Management of Main Hawaiian Islands Uku, American Samoa Bottomfish and Longline Interactions with Protected Species

June 22, 2020 — The following was released by the Western Pacific Regional Fishery Management Council:

The Western Pacific Regional Fishery Management Council will convene June 22 to 25 to address management of main Hawaiian Island uku (grey snapper), American Samoa bottomfish and protected species interactions in the Hawai’i and American Samoa longline fisheries. The meeting will be held by video conference with host sites at the Hilton Guam Resort & Spa, Chuchuko Room, 202 Hilton Rd., Tumon Bay, Guam; Hyatt Regency Saipan, Royal Palm Ave., Micro Beach Rd., Saipan, CNMI; and Department of Port Administration, Airport Conference Room, Pago Pago International Airport, Tafuna Village, American Samoa. Instructions on connecting to Webex, agendas and briefing documents are posted at www.wpcouncil.org/meetings-calendars.

The uku (Aprion virescens, grey snapper) stock in the main Hawaiian Islands is not overfished nor subject to overfishing according to a NOAA Pacific Islands Fisheries Science Center. The fishery is considered to be data-rich, using a fishery-independent measure of biomass, length and local life history information gathered from the commercial and non-commercial sectors. The 2018 spawning stock was estimated to be 1.8 million pounds, which is 2¾ times the calculated sustainable threshold of 663,705 pounds. The Council will use the acceptable biological catch set by its Scientific and Statistical Committee (SSC) to specify the annual catch limit for the fishery for fishing years 2021-2024.

The 2019 assessment of the American Samoa bottomfish fishery indicates that the stock is overfished and subject to overfishing. The National Marine Fishery Service (NMFS) notified the Council of its obligation to end overfishing immediately and develop and implement within two years a plan that would rebuild the overfished stock within 10 years. The fishery harvests multiple species of varying depth range and has diverse life history characteristics for which information is sparse and borrowed from other areas. Data sources are creel surveys that estimate total catch and commercial receipt books that capture fish sold to the market. The SSC has recommended that the Council work with American Samoa to develop management options and explore effort and biological limits and area management, as any federal measure would apply to federal waters only, i.e., beyond 3 nautical miles from shore. The SSC also recommended that the bottomfish rebuilding plan include cultural harvest in the offshore banks for deep-water snappers. With the COVID-19 pandemic, data collection efforts have been reduced with unknown consequences on the quality of data that will represent fishing year 2020.

Endangered Species Act consultations are ongoing for the Hawai’i and American Samoa longline tuna fisheries regarding interactions with protected species. Based on available scientific information, the impact by these US longline fisheries is low compared to foreign fisheries and any measure implemented in these US fisheries is likely to have a limited effect on the population. The Hawai’i-based deep-set longline fishery targeting bigeye tuna and American Samoa longline fishery targeting albacore are monitored with 20% federal observer coverage.

Council Urges Reopening of Fishing Grounds Based on New False Killer Whale Study

March 12, 2020 — The following was released by the Western Pacific Regional Fishery Management Council:

A new study indicates that the pelagic stock of false killer whales around the Hawaiian Islands may be healthier than previously thought. Amanda Bradford of NOAA Pacific Islands Fisheries Science Center presented the research yesterday to the Western Pacific Regional Fishery Management Council, which has authority over fisheries in the US exclusive economic zone (EEZ, i.e., generally 3 to 200 miles offshore) of Hawai‘i and other US islands and territories in the Pacific. The Council is meeting this week in Honolulu.

In light of the new population estimates, the Council yesterday asked the National Marine Fisheries Service (NMFS) to explore reopening the Southern Exclusion Zone (SEZ), a 132,000-square-mile area spanning the entire EEZ south of the main Hawaiian Islands. Since 2012, the SEZ is closed to the Hawai‘i longline fishery when it interacts with two pelagic false killer whales that result in a mortality and serious injury determination by NMFS. The closed SEZ leaves only 17.8 percent of the EEZ around the Hawaiian Islands open to the fishery.

When the SEZ was implemented, the estimated population size of pelagic false killer whales allowed a maximum of nine individuals from the stock to be removed by means other than natural mortalities. Above that number could impair the stock’s ability to reach or maintain its optimum sustainable population, it was determined. The new estimates may indicate a need to modify that number.

The Council meeting continues today and tomorrow at the YWCA Fuller Hall, 1040 Richards St., Honolulu, from 8:30 a.m. to 5 p.m. To participate by web conference: Go to https://wprfmc.webex.com/join/info.wpcouncilnoaa.gov. For more information on the meeting, go to www.wpcouncil.org/meetings-calendars, email info@wpcouncil.org or call (808) 522-8220.

Scientists Set Acceptable Biological Catches for Mariana Archipelago Bottomfish, Recommend New Stock Assessment for Mariana and American Samoa Bottomfish

March 6, 2020 — The following was released by the Western Pacific Regional Fishery Management Council:

The Scientific and Statistical Committee (SSC) of the Western Pacific Regional Fishery Management Council concluded its three-day 135th meeting today in Honolulu. Key outcomes addressed the Mariana and American Samoa Archipelago bottomfish fisheries. The Council will consider and may take action on the SSC outcomes and other issues when it meets March 10 to 12 at the YWCA Atherton Hall, 1040 Richards St., Honolulu. For more information on these meetings, including a Fishers Forum on Hawai’i fisheries the evening of March 10, go to http://www.wpcouncil.org/meetings-calendars/ or contact the Council at info@wpcouncil.org or (808) 522-8220.

Mariana Archipelago Bottomfish Fisheries: The SSC set annual acceptable biological catches of bottomfish at 27,000 pounds in Guam and 84,000 pounds in the Commonwealth of the Northern Mariana Islands (CNMI) for fishing years 2020-2023. The specifications are based on a 2019 stock assessment by the NOAA Pacific Islands Fisheries Science Center (PIFSC), which found bottomfish to be overfished on Guam but not in the CNMI and the fisheries in both areas to be operating at sustainable levels of catch and effort. Previous stock assessments had determined that the stocks in both areas were healthy. The acceptable biological catches reflect what can be removed while allowing the stock to reproduce at levels of maximum sustainable yield. Based on creel survey estimates, Guam’s commercial and noncommercial bottomfish fisheries landed 27,781 pounds in 2016; 22,962 pounds in 2017; and 32,751 pounds in 2018; and CNMI landed 49,570 pounds in 2016; 46,290 pounds in 2017; and 858 pounds in 2018. Next week, the Council will develop annual catch limits for the fisheries based on the acceptable biological catch levels and management uncertainties. Catch limits may be equal to or less than the acceptable biological catch specifications.

American Samoa and Mariana Archipelago Managed Bottomfish Species: The SSC considered potential alternative groupings for managed bottomfish species caught in federal waters (i.e., seaward of state waters, which are 0 to 3 miles from shore) based on available biological and fishery data and the feasibility of conducting stock assessments. Currently, the bottomfish species in each island area are grouped together as a single bottomfish complex. During discussions, it was noted that the American Samoa stock assessment focused on the heavily exploited area around Tutuila and less around the more lightly exploited areas around the offshore seamounts and the Manu’a islands due to the way the data was collected. It was also noted that careful attention should be given to the definition of a bottomfishing trip, which currently is having bottomfishing gear onboard, because hand crank and electric reels are used for bottomfishing and for trolling. The SSC recommended that the Council request PIFSC to initiate a new benchmark stock assessment and to explore other modeling approaches and data sets aside from the creel surveys and commercial receipt books. An SSC member designee will work with PIFSC and Council staff to explore the deep and shallow species groupings, trip and gear definitions, and available data sources.

Reviewers Approve Stock Assessment for Hawai’i Gray Snapper, Emphasize the Need for Accurate Recreational Catch Data

March 2, 2020 — The following was released by the Western Pacific Regional Fishery Management Council:

In Hawai’i, consumers prefer deep-water snappers for their red and pink color, which has cultural significance especially around the winter holidays. However, in May and June, fishermen switch to target the less desired, but just as delicious, gray snapper, known locally as uku (Aprion virescens). During these months, uku are found in abundance at Penguin Bank, located between Moloka’i and O’ahu, where they likely aggregate to spawn.

The good news about uku in the main Hawaiian Islands is the stock is healthy. In fact, scientists at NOAA Pacific Islands Fisheries Science Center (PIFSC) recently determined that Hawai’i fishermen can continue to harvest uku without harming the stock’s ability to maintain its maximum sustainable yield. The PIFSC stock assessment for uku was reviewed this week by the Western Pacific Stock Assessment Review (WPSAR) panel, which ascertained that the assessment is sound and based on the best scientific information available.

Erik Franklin, PhD, University of Hawai’i at Manoa and chair of the WPSAR panel, presented the results today in Honolulu to a group of interested scientists, fishery managers and fishermen at the office of the Western Pacific Regional Fishery Management Council, where the five-day review was held. The WPSAR panel also included Yong Chen, PhD, University of Maine, and Yan Jiao, PhD, Virginia Tech. Gray snapper is a species managed offshore by the Council in both Hawai’i and American Samoa, where it is known as asoama.

The review contained recommendations to improve future stock assessments. “It can’t be emphasized enough, the importance of getting accurate recreational data for future assessments,” Franklin said.

Marc Nadon, one of the PIFSC stock assessment scientists, said the uku assessment utilized commercial catch data from 1948 to 2018. Since recreational catch data for the fishery is available only since about 2003, the scientists used data from 2003 to 2007 and applied it to the human population trend in Hawai’i to recreate the noncommercial data for the same period as the commercial data.

Recreational catch in Hawai’i is captured voluntarily for state waters (0 to 3 miles offshore) through the Hawai’i Marine Recreational Fishing Survey, run by the State of Hawai’i, with assistance from NOAA Fisheries. In federal waters (3 to 200 miles offshore), noncommercial permits and reporting are required for bottomfish but only a few fishermen have complied.

Uku is found in depths of 0 to 600 feet and is caught mainly by deep-sea and inshore handline and by trolling. Look for it in the markets this spring as an alternative to mahimahi and ono (wahoo) while you wait for ahi (yellowfin tuna) to return to the islands in the summer.

For more information, contact the Council at (808) 522-8220 or by email at info.wpcouncil@noaa.gov.

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