Refine Results
Region
Topic
Species Category

Data

8 resources match your filter criteria.

2023 Assessment Of The Thornyhead Stock Complex In The Gulf Of Alaska

The Gulf of Alaska thornyhead complex remain on a biennial stock assessment schedule with a full stock assessment produced in even years and no stock assessment produced in odd years.
February 21, 2024 - Assessments ,

2022 Assessment Of The Thornyhead Stock Complex In The Gulf Of Alaska

The Gulf of Alaska thornyhead complex remain on a biennial stock assessment schedule with a full stock assessment produced in even years and no stock assessment produced in odd years.
January 10, 2023 - Assessments ,

2021 Assessment Of The Thornyhead Stock Complex In The Gulf Of Alaska

In accordance with the approved schedule, no assessment was conducted for this stock this year, however, a full stock assessment will be conducted in 2022. Until then, the values generated from the previous stock assessment (below) will be rolled over...
February 07, 2022 - Assessments ,

2020 Assessment Of The Thornyhead Stock Complex In The Gulf Of Alaska

Rockfish have historically been assessed on a biennial stock assessment schedule to coincide with the availability of new trawl survey data (odd years). In 2017, the Alaska Fisheries Science Center (AFSC) participated in a stock assessment...
January 29, 2021 - Assessments ,

2019 Assessment of the Thornyhead Stock Complex in the Gulf of Alaska

NOTE: In accordance with the approved schedule, no assessment was conducted for this stock this year, however, a full stock assessment will be conducted in 2020.
February 03, 2020 - Assessments ,

2018 Assessment of the Thornyhead Stock Complex in the Gulf of Alaska

Rockfish have historically been assessed on a biennial stock assessment schedule to coincide with the availability of new trawl survey data (odd years).
January 30, 2019 - Assessments ,

2016 Assessment of the Thornyhead Stock Complex in the Gulf of Alaska

The National Marine Fisheries Service (NMFS) Auke Bay Laboratory (ABL) has released 13,897 tagged SST in Alaska waters since 1992, and over 220 of those fish have been recovered.
February 19, 2016 - Assessments ,

2015 Assessment of the Thornyhead Stock Complex in the Gulf of Alaska

Thornyheads (Sebastolobus species) are groundfish belonging to the family Scorpanenidae, which contains the rockfishes. The family Scorpanenidae is characterized morphologically within the order by venomous dorsal, anal, and pelvic spines, numerous spines in general, and internal fertilization of eggs. While thornyheads are considered rockfish, they are distinguished from the “true” rockfish in the genus Sebastes primarily by reproductive biology; all Sebastes rockfish are live-bearing (ovoviviparous) fish, while thornyheads are oviparous, releasing fertilized eggs in floating gelatinous masses. Thornyheads are also differentiated from Sebastes in that they lack a swim bladder. There are three species in the genus Sebastolobus, including the shortspine thornyhead Sebastolobus alascanus, the longspine thornyhead Sebastolobus altivelis, and the broadfin thornyhead Sebastolobus macrochir (Eschmeyer et al. 1983, Love et al. 2002).
February 21, 2015 - Assessments ,