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Billfish Larval Data from Plankton Tows Conducted off the Kona Coast in West Hawai'i between 1997 and 2018 (NCEI Accession 0306183)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 29, 2026 | Last Modified: 2025-08-19T00:00:00.000+00:00
This is a 20-year (1997-2018) dataset of neustonic ichthyoplankton collections from West Hawai'i and beyond focusing on four species of billfishes (Blue Marlin, a'u, (Makaira nigricans), Striped Marlin, a'u, (Kajikia audax), Shortbilled Spearfish, a'u, (Tetrapturus angustirostris), and Swordfish, a'u ku, (Xiphias gladius)). We compiled observations of billfish larvae over this 20- year period (from 998 discrete ichthyoplankton tows in West Hawaii), and provide specimen information and species level identifications for many of these larvae using both existing and new genetic assignments. Additionally, we filtered these data to tows with consistent methodologies revealing 1761 larval billfishes (from 771 discrete surface tows in West Hawaii). We also constructed a thorough dataset of environmental variables (temperature, salinity, chlorophyll) associated with each occurrence of larval billfish and all absences using oceanographic data collected in-situ during cruises and satellite data. We present the first complete multispecies larval billfish dataset with coupled environmental data in the Pacific Islands Region ready for statistical analysis. This dataset will be critical for improving our understanding of how oceanographic features and environmental changes will affect larval growth, survival, and ultimately population replenishment.

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0306183 CHLOROPHYLL A CHLOROPHYLL A CONCENTRATION FLUORESCENCE HABITAT ICHTHYOPLANKTON LENGTH SALINITY SEA SURFACE TEMPERATURE SPECIES IDENTIFICATION SPECIES IDENTIFICATION - LIFE STAGE WATER TEMPERATURE flow meter fluorometer microscope net - plankton net Niskin bottle satellite sensor - active microwave satellite sensor - visible to infrared thermosalinograph visual observation biological in situ laboratory analyses satellite data NOAA Ship Oscar Elton Sette NOAA Ship Townsend Cromwell Cooperative Institute for Marine and Atmospheric Research NOAA Pacific Islands Fisheries Science Center, Ecosystem Sciences Division NOAA Pacific Islands Fisheries Science Center Coastal Waters of Hawaii North Pacific Ocean oceanography DOC/NOAA/NMFS > National Marine Fisheries Service, NOAA, U.S. Department of Commerce DOC/NOAA/NMFS/PIFSC/ESD > Ecosystem Sciences Division, Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce West Hawai'i Ichthyoplankton Time Series Project EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PROTISTS > PLANKTON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL EARTH SCIENCE > OCEANS > OCEAN OPTICS > FLUORESCENCE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY CHLOROPHYLL A CONCENTRATION- 8 day mean Lunar Illumination Modelled Salinity Water Volume distance to shore FLUOROMETERS > FLUOROMETERS MICROSCOPES > MICROSCOPES NISKIN BOTTLES PLANKTON NETS THERMOSALINOGRAPHS VISUAL OBSERVATIONS > VISUAL OBSERVATIONS R package computer Ships OSCAR ELTON SETTE (call sign: WTEE, ICES code: 33OC, 2003-) TOWNSEND CROMWELL (ICES code: 31TC) OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > HAWAIIAN ISLANDS OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN J74D4J

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