Project Description
SEDAR 77 will address the stock assessments for HMS Hammerhead Sharks. Hammerhead Stock ID will be resolved prior to the start of the SEDAR 77 Data process through a series of Stock ID webinars. The Data process will be a series of webinars and a in-person workshop to be held December 2021. The Assessment Process will be a series of webinars; and the Review Workshop will be in 2023.
For more information, please contact the SEDAR Coordinator for this project, Kathleen Howington: kathleen.howington@safmc.net.
NOTE: SEDAR Working papers document the methods, datasets, and preliminary analyses that are under consideration at the various workshops and therefore do not necessarily represent final consensus opinions of workshop participants. Working paper findings and methods may change following workshop review. Working papers should not be cited without author permission.
PUBLIC COMMENTS
To submit a public comment for SEDAR 77, please complete the form at the link below.
To view public comments that have been submitted for SEDAR 77, please review the report at the link below.
Project Workshops
SEDAR 77 HMS Hammerhead Sharks Stock ID Process
SEDAR 77 HMS Hammerhead Sharks Stock ID Report
Workshop Working Papers
- SEDAR 77 – SID01: Regional movements of great, Sphyrna mokarran, and scalloped, Sphyrna lewini, hammerhead sharks in the US Atlantic, Gulf of Mexico and the Bahamas preliminary results Opens in a new window
- SEDAR 77 – SID02: Catches of Hammerhead Sharks from the Congressional Supplemental Sampling Program (CSSP) in the Northern Gulf of Mexico Opens in a new window
- SEDAR 77 – SID03: Supplementary Material Regional movements of great, Sphyrna mokarran, and scalloped, Sphyrna lewini, hammerhead sharks in the US Atlantic,Gulf of Mexico and the Bahamas preliminary results Opens in a new window
- SEDAR 77 – SID04: Tag and recapture data for Great Hammerhead, Sphyrna mokarran, and Scalloped Hammerhead, Sphyrna lewini, sharks caught in the western Gulf of Mexico from 2014-2021 Opens in a new window
- SEDAR 77 – SID05: Residency and movements of juvenile great hammerheads, Sphyrna mokarran, in the Tampa Bay area preliminary results Revised: 11/30/2121 Opens in a new window
- SEDAR 77 – SID06: Directed Sustainable Fisheries, Inc. A Saltwater Fisheries Consulting Company Some Large Hammerhead shark information based on shark fin business knowledge from the mid-1980’s through to September 1997 from Rusty Hudson Opens in a new window
- SEDAR 77 – SID07: Report on spatial movements of great and scalloped hammerhead sharks in the US Atlantic and Gulf of Mexico using Satellite tags Revised 9/8/21 Opens in a new window
Workshop Reference Documents
- SEDAR 77 – RD01: Movement, Behavior, and Habitat Use of a Marine Apex Predator, the Scalloped Hammerhead Opens in a new window
- SEDAR 77 – RD02: First Verified Record of the Smooth Hammerhead ( Sphyrna zygaena) in Coastal Waters of the Northern Gulf of Mexico with a Review of their Occurrence in the Western North Atlantic Ocean Opens in a new window
- SEDAR 77 – RD03: Use of marine protected areas and exclusive economic zones in the subtropical western North Atlantic Ocean by large highly mobile sharks Opens in a new window
- SEDAR 77 – RD04: Overlap between highly suitable habitats and longline gear management areas reveals vulnerable and protected regions for highly migratory sharks Opens in a new window
- SEDAR 77 – RD05: Regional-scale variability in the movement ecology of marine fishes revealed by an integrative acoustic tracking network Opens in a new window
- SEDAR 77 – RD06: Restricted connectivity and population genetic fragility in a globally endangered Hammerhead Shark Opens in a new window
- SEDAR 77 – RD07: Tracking the Fin Trade: Genetic Stock Identification in western Atlantic scalloped hammerhead sharks Sphyrna lewini Opens in a new window
- SEDAR 77 – RD08: Seasonal Movements and Habitat Use of Juvenile Smooth Hammerhead Sharks in the Western North Atlantic Ocean and Significance for Management Opens in a new window
- SEDAR 77 – RD09: The complete mitochondrial genome of the endangered great hammerhead shark, Sphyrna mokarran.pdf Opens in a new window
- SEDAR 77 – RD10: New insights into the migration patterns of the scalloped hammerhead shark Sphyrna lewini based on vertebral microchemistry Opens in a new window
- SEDAR 77 – RD11: Global Phylogeography with Mixed-Marker Analysis Reveals Male-Mediated Dispersal in the Endangered Scalloped Hammerhead Shark (Sphyrna lewini) Opens in a new window
- SEDAR 77 – RD12: Species composition of the largest shark fin retail‑market in mainland China Opens in a new window
- SEDAR 77 – RD13: Identification of young-of-the-year great hammerhead shark Sphyrna mokarran in northern Florida and South Carolina Opens in a new window
- SEDAR 77 – RD14: Sphyrna gilberti sp. nov., a new hammerhead shark (Carcharhiniformes, Sphyrnidae) from the western Atlantic Ocean Opens in a new window
- SEDAR 77 – RD15: Genetic evidence of cryptic speciation within hammerhead sharks (Genus Sphyrna) Opens in a new window
- SEDAR 77 – RD16: Philopatry and Regional Connectivity of the Great Hammerhead Shark in the US and Bahamas Opens in a new window
- SEDAR 77 – RD17: Potential distribution of critically endangered hammerhead sharks and overlap with the small-scale fishing fleet in the southern Gulf of Mexico Opens in a new window
- SEDAR 77 – RD18: Complete mitogenome sequences of smooth hammerhead sharks, Sphyrna zygaena, from the eastern and western Atlantic Opens in a new window
- SEDAR 77 – RD19: Cryptic hammerhead shark lineage occurrence in the western South Atlantic revealed by DNA analysis Opens in a new window
- SEDAR 77 – RD20: Double tagging clarifies post‑release fate of great hammerheads Opens in a new window
- SEDAR 77 – RD21: Defining Sex-Specific Habitat Suitability for a Northern Gulf of mexico Opens in a new window
- SEDAR 77 – RD22: Distribution and relative abundance of scalloped (Sphyrna lewini) and Carolina (S. gilberti) hammerheads in the western North Atlantic Ocean Opens in a new window
- SEDAR 77 – RD23: Distributions and Movements of Atlantic Shark Species A 52-Year Retrospective Atlas of Mark and Recapture Data Opens in a new window
- SEDAR 77 – RD24: First identification of probable nursery habitat for critically endangered great hammerhead Sphyrna mokarran on the Atlantic Coast of the United States Opens in a new window
- SEDAR 77 – RD25: Characterization of a scalloped hammerhead (Sphyrna lewini) nursery habitat in portions of the Atlantic Intracoastal Waterway Opens in a new window
Workshop Presentations
SEDAR 77 HMS Hammerhead Sharks Data Process
SEDAR 77 HMS Hammerhead Sharks Data Workshop Progress Report
Workshop Working Papers
- SEDAR 77 – DW01:Hammerhead Shark Catches from Bottom Longline and Pelagic Longline Surveys Opens in a new window
- SEDAR 77 – DW02: Report on spatial movements of great and scalloped hammerhead sharks in the US Atlantic and Gulf Opens in a new window
- SEDAR 77 – DW03: Morphometric conversions for great hammerhead Sphyrna mokarran and scalloped hammerhead Sphyrna lewini from the western North Atlantic Ocean and Gulf of Mexico Opens in a new window
- SEDAR 77 – DW04: Preliminary catches of hammerhead sharks in the U.S. Atlantic, Gulf of Mexico, and Caribbean Opens in a new window
- SEDAR 77 – DW05: Hammerhead Shark (Sphyrna spp.) Electronic Monitoring Data Review from the Gulf of Mexico Bottom Longline Reef Fish Fishery Opens in a new window
- SEDAR 77 – DW06: Size distribution and trends in relative abundance of scalloped hammerheads (Sphyrna lewini) in the northern Gulf of Mexico, 2006-2021 Revised: 12/16/2021 Opens in a new window
- SEDAR 77 – DW07: Post-release mortality and behavior of sharks in shore-based recreational fisheries using citizen scientists and low-cost tags Revised: 12/16/21 Opens in a new window
- SEDAR 77 – DW08: Standardized abundance indices for scalloped hammerhead shark from the Pelagic Longline Observer Program, 1992-2019. Opens in a new window
- SEDAR 77 – DW09: Stress physiology of scalloped and great hammerhead sharks from a bottom longline fishery Opens in a new window
- SEDAR 77 – DW10: Stress physiology of scalloped and great hammerhead sharks from a bottom longline fishery Supplemental Tables Opens in a new window
- SEDAR 77 – DW11: Age and growth of the great hammerhead, Sphyrna mokarran, in the western North Atlantic Ocean Opens in a new window
- SEDAR 77 – DW12: Standardized abundance indices from scalloped and great hammerhead from the Shark Bottom Longline Observer Program, 1994-2019 Opens in a new window
- SEDAR 77 – DW13: Standardized Abundance Indices for Scalloped Hammerhead from the Southeast Coastal Gillnet Fishery Opens in a new window
- SEDAR 77 – DW14: Standardized Abundance Indices for Great Hammerhead from the Florida State University Longline Survey-with addendum 3/21/2022 Opens in a new window
- SEDAR 77 – DW15: Standardized Abundance Index for Great Hammerhead from the Rosenstiel School of Marine and Atmospheric Science Drumline Survey Revised: 2/9/2022 Opens in a new window
- SEDAR 77 – DW16: Relative abundance index for young-of-the-year scalloped hammerhead shark based on a fishery-independent gillnet survey off Texas, 1982-2019 Opens in a new window
- SEDAR 77 – DW17: Relative abundance index for young-of-the-year scalloped hammerhead shark from the northeastern Gulf of Mexico Opens in a new window
- SEDAR 77 – DW18: Reproductive parameters of great hammerhead sharks (Sphyrna mokarran) and scalloped hammerhead sharks (Sphyrna lewini) from the western North Atlantic Ocean revised12/20/2021 Opens in a new window
- SEDAR 77 – DW19: Age and growth of scalloped (Sphyrna lewini) and Carolina (Sphyrna gilberti) hammerheads in the western North Atlantic Ocean Opens in a new window
- SEDAR 77 – DW20: Bycatch estimates of scalloped and great hammerhead shark in the shark bottom longline fishery. Opens in a new window
- SEDAR 77 – DW21: Bycatch Estimates of Scalloped and Great Hammerhead Shark in the Southeast Coastal Gillnet Fishery Opens in a new window
- SEDAR 77 – DW22: Report on the post-release mortality rates of great hammerhead sharks Sphyrna mokarran in the recreational, catch and release, shore-based fishery in Florida, USA. Opens in a new window
- SEDAR 77 – DW23: Relative abundance of scalloped hammerhead, Sphyrna lewini, and Carolina hammerhead, Sphyrna gilberti, along the southern U.S east coast. Opens in a new window
- SEDAR 77 – DW24: Scalloped and Great Hammerheads Abundance Indices from NMFS Bottom Longline Surveys in the Northern Gulf of Mexico and Western North Atlantic Opens in a new window
- SEDAR 77 – DW25: Standardized Catch Rates Of Great Hammerheads (Sphyrna Mokarran) Collected During Bottom Longline Surveys In Coastal Waters Of The Northern Gulf Of Mexico, 2006-2019 Revised: 3/17/2022 Opens in a new window
- SEDAR 77 – DW26: An Updated Literature Review of Post-Release Live-Discard Mortality Rate Estimates in Sharks for use in SEDAR 77 Opens in a new window
- SEDAR 77 – DW27: Estimation of scalloped and smooth hammerhead discards in the northeast gillnet fishery using data collected by the NOAA Northeast Fisheries Observer Program revised: 1/29/2022 Opens in a new window
- SEDAR 77 – DW28:Standardized index of abundance for scalloped hammerhead sharks from the NOAA Northeast Fisheries Science Center coastal shark bottom longline survey Opens in a new window
- SEDAR 77 – DW29: Standardized indices of abundance for scalloped hammerhead sharks from the South Carolina Department of Natural Resources red drum and Southeast Area Monitoring and Assessment Program longline surveys Opens in a new window
- SEDAR 77 – DW30: Standardized index of abundance for scalloped hammerhead sharks from the South Carolina Department of Natural Resources, Cooperative Atlantic States Shark Pupping and Nursery long-gillnet survey Opens in a new window
- SEDAR 77 – DW31: Standardized index of abundance for scalloped hammerhead sharks from the South Carolina Department of Natural Resources, Cooperative Atlantic States Shark Pupping and Nursery LONG-gillnet survey Opens in a new window
- SEDAR 77 – DW32: Standardized index of abundance for scalloped hammerhead sharks from the South Carolina Department of Natural Resources, Cooperative Atlantic States Shark Pupping and Nursery short-gillnet survey Opens in a new window
- SEDAR 77 – DW33: Standardized indices of abundance for scalloped hammerhead sharks from the University of North Carolina shark longline survey Opens in a new window
- SEDAR 77 – DW34: Movement and post-release mortality data for great hammerheads, Sphyrna mokarran, tagged during research bottom longline surveys in the northern Gulf of Mexico from 2012-2014 Opens in a new window
- SEDAR 77 – DW35: Hammerhead post-release mortality data summary for SEDAR Opens in a new window
- SEDAR 77 – DW36: Report on post-release mortality of scalloped hammerhead, Sphyrna lewini, and great hammerhead, Sphyrna mokarran Opens in a new window
- SEDAR 77 – DW37: Revised bycatch estimates of scalloped and great hammerhead shark in the shark bottom longline fishery. Opens in a new window
- SEDAR 77 – DW38: Revised Bycatch Estimates of Scalloped and Great Hammerhead Shark in the Southeast Coastal Gillnet Fishery Opens in a new window
Workshop Reference Documents
- SEDAR 77 – RD26: Age and growth of the great hammerhead shark, Sphyrna mokarran, in the north-western Atlantic Ocean and Gulf of Mexico Opens in a new window
- SEDAR 77 – RD27: Miller et al. 2014_Great Hammerhead Shark Status Review Report Opens in a new window
- SEDAR 77 – RD28: Hammerhead Sharks of the Northwest Atlantic and Gulf of Mexico (2014 – 2020) Opens in a new window
- SEDAR 77 – RD29: Age validation of great hammerhead shark (Sphyrna mokarran), determined by bomb radiocarbon analysis Opens in a new window
- SEDAR 77 – RD30: Age and growth of the smooth hammerhead, Sphyrna zygaena, in the Atlantic Ocean comparison with other hammerhead species Opens in a new window
- SEDAR 77 – RD31: Status Review Report Scalloped Hammerhead Opens in a new window
- SEDAR 77 – RD32: Age and growth of the scalloped hammerhead shark, Sphyrna lewini, in the north-west Atlantic Ocean and Gulf of Mexico Opens in a new window
- SEDAR 77 – RD33: Scalloped hammerhead shark (Sphyrna lewini) 2014-2019 Opens in a new window
- SEDAR 77 – RD34: The biology and conservation status of the large hammerhead shark complex the great, scalloped, and smooth hammerheads Opens in a new window
- SEDAR 77 – RD35: Hooking mortality of scalloped hammerhead Sphyrna lewini and great hammerhead Sphyrna mokarran sharks caught on bottom longlines Opens in a new window
- SEDAR 77 – RD36: ENDANGERED SPECIES ACT STATUS REVIEW REPORT Smooth Hammerhead Shark (Sphyrna zygaena) Opens in a new window
- SEDAR 77 – RD37: Scalloped Hammerhead Shark (Sphyrna lewini) 5-Year Review Summary and Evaluation Opens in a new window
- SEDAR 77 – RD38: Periodicity of the growth-band formation in vertebrae of juvenile scalloped hammerhead shark Sphyrna lewini from the Mexican Pacific Ocean Opens in a new window
- SEDAR 77 – RD39: Range extension of the Endangered great hammerhead shark Sphyrna mokarran in the Northwest Atlantic preliminary data and significance for conservation Opens in a new window
- SEDAR 77 – RD40: Identification of a nursery area for the critically endangered hammerhead shark Opens in a new window
- SEDAR 77 – RD41: SEDAR65-RD20 – An Updated Literature Review of Post-release Live-discard Mortality Rate Estimates in Sharks for use in SEDAR 65 Opens in a new window
- SEDAR 77 – RD42: Physiological stress response, reflex impairment, and survival of five sympatric shark species following experimental capture and release Opens in a new window
- SEDAR 77 – RD43: Integrating reflexes with physiological measures to evaluate coastal shark stress response to capture Opens in a new window
- SEDAR 77 – RD44: SEDAR29-WP17- A preliminary review of post-release live-discard mortality estimates for sharks Opens in a new window
- SEDAR 77 – RD45: SEDAR34-WP08- A preliminary review of post-release live-discard mortality rate estimates in sharks for use in SEDAR 34 Opens in a new window
- SEDAR 77 – RD46: SEDAR39-DW21 – A preliminary review of post-release live-discard mortality rate estimates in sharks for use in SEDAR 39 Opens in a new window
- SEDAR 77 – RD47: Updated Post-release Live-discard Mortality Rate and Range of Uncertainty Developed for Blacktip Sharks Captured in Hook and Line Recreational Fisheries for use in the SEDAR 29-Update Opens in a new window
- SEDAR 77 – RD48: Meta-analysis of post-release fishing mortality in apex predatory pelagic sharks and white marlin Opens in a new window
Workshop Presentations
SEDAR 77 HMS Hammerhead Sharks Assessment Process
Workshop Working Papers
- SEDAR 77 – AW01: Exploratory analysis of U.S Atlantic and Gulf of Mexico scalloped hammerhead recruitment indices Opens in a new window
- SEDAR 77 – AW02: Hierarchical analyses of U.S. Atlantic and Gulf of Mexico scalloped hammerhead recruitment indices Opens in a new window
- SEDAR 77 – AW04: Estimates of vital rates and population dynamics parameters of interest for hammerhead sharks (Sphyrna lewini, S. mokarran, and S. zygaena) in the western North Atlantic Ocean Opens in a new window
- SEDAR 77 – AW05: Reconciling age-0 indices of relative abundance of the U.S. Atlantic and Gulf of Mexico scalloped hammerhead (Sphyrna lewini) Opens in a new window
- SEDAR 77 – AW06: FishPath Questions and Answers Opens in a new window
- SEDAR 77 – AW07: FishPath Results Smooth Hammerhead Shark Atlantic and Gulf of Mexico Opens in a new window
- SEDAR 77 – AW08: Selected FishPath Results for Smooth hammerhead shark, U.S. Atlantic and Gulf of Mexico Narrowed Opens in a new window
Workshop Reference Documents
- SEDAR 77 – RD49: Stock Assessment of Scalloped Hammerheads in the Western North Atlantic Ocean and Gulf of Mexico Opens in a new window
- SEDAR 77 – RD50: Poor-data and data-poor species stock assessment using a Bayesian hierarchical approach Opens in a new window
- SEDAR 77 – RD51: Hierarchical Bayesian approach for population dynamics modelling of fish complexes without species-specific data Opens in a new window
- SEDAR 77 – RD52: Highly migratory species predictive spatial modeling (PRiSM) an analytical framework for assessing the performance of spatial fisheries management Opens in a new window
- SEDAR 77 – RD53: Dynamic factor analysis to reconcile conflicting survey indices of abundance Opens in a new window
- SEDAR 77 – RD54: SEDAR 65 – AW03: Reconciling indices of relative abundance of the Atlantic blacktip shark (Carcharhinus limbatus) Opens in a new window
SEDAR 77 HMS Hammerhead Sharks Review Process
Project Supplemental
- SEDAR 77 HMS Hammerhead Sharks Detailed Schedule Opens in a new window
- SEDAR 77 HMS Hammerhead Sharks Document List 4/18/2023 Opens in a new window
- SEDAR 77 HMS Hammerhead Sharks Milestone Schedule Opens in a new window
- SEDAR 77 HMS Hammerhead Sharks Stock ID Terms of Reference Opens in a new window
- SEDAR 77 HMS Hammerhead Sharks Terms of Reference Opens in a new window