Fish Predation on Juvenile Herring in Prince William Sound, Alaska, 2009-2012, EVOS Prince William Sound Herring Program

• Main Author: Mary Anne Bishop
• Format: Dataset
• Language: unknown
• Published: Research Workspace
• Subjects: Podothecus accipenserinus; sturgeon poacher; Nautichthys oculofasciatus; sailfin sculpin; Mallotus villosus; capelin, capelan; Isopsetta isolepis; butter sole; Myoxocephalus scorpius; shorthorn sculpin, chaboisseau à épines courtes; Lepidopsetta polyxystra; northern rock sole; Thaleichthys pacificus; eulachon; Oncorhynchus tshawytscha; Chinook salmon, king salmon, saumon chinook, salmón boquinegra; Bathyraja aleutica; Aleutian skate; Bathyraja interrupta; Bering skate, sandpaper skate; Sebastes proriger; redstripe rockfish; Sebastes nigrocinctus; tiger rockfish; Reinhardtius stomias; arrowtooth flounder; Trichodon trichodon; Pacific sandfish; Hemilepidotus hemilepidotus; red Irish lord; Parophrys vetulus; English sole, platija limón; Hexagrammos lagocephalus; rock greenling; Triglops pingelii; ribbed sculpin; Squalus acanthias; piked dogfish, spiny dogfish, dogfish, grayfish, spurdog, aiguillat commun, galludo espinoso, cazón espinoso común; Sebastes melanops; black rockfish; Hemilepidotus jordani; yellow Irish lord; Anoplopoma fimbria; sablefish, bacalao negro; Hexagrammos stelleri; whitespotted greenling; Bathymaster signatus; searcher; Poroclinus rothrocki; whitebarred prickleback; Lumpenus sagitta; snake prickleback; Lepidopsetta bilineata; rock sole; Microgadus proximus; Pacific tomcod; Leptocottus armatus; Pacific staghorn sculpin, charrasco de astas; Sebastes emphaeus; Puget Sound rockfish; Ophiodon elongatus; lingcod, molva; Sebastes brevispinis; silvergray rockfish; Sebastes ruberrimus; rasphead rockfish, yelloweye rockfish, rocote ojo amarillo; Eleginus; saffron cod; Hippoglossus stenolepis; Pacific halibut, alabato del Pacífico; Cryptacanthodes giganteus; giant wrymouth; Platichthys stellatus; starry flounder; Sebastes aleutianus; rougheye rockfish; Raja rhina; longnose skate, raya narigona; Hippoglossoides elassodon; flathead sole; Raja binoculata; big skate, raya bruja gigante; Limanda aspera; yellowfin sole; Sebastes maliger; quillback rockfish; Hexagrammos decagrammus; kelp greenling; Myoxocephalus polyacanthocephalus; great sculpin; Sebastes caurinus; copper rockfish, rocote cobrizo; Clupea pallasii; Pacific herring, arenque del Pacífico; Gadus chalcogrammus; Walleye Pollock; Gadus macrocephalus; Pacific cod, morue du Pacifique, bacalao del Pacifico; bay; fjord; estuary; Prince William Sound; Exxon Valdez; oil spill; Exxon Valdez Oil Spill Trustee Council; EVOSTC; EVOS Herring; EVOS Herring Survey; piscivory; food habits; top-down regulation; fish consumption; nursery bays; Pacific cod; walleye pollock; herring; diet diversity; diet analysis; predation; bioenergetics; March; November; OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA; CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALASKA; Amarillo; Giganteus; Gulf of Alaska; Pacific; Aiguillat commun; Alaska; spiny dogfish
• Online Access: https://search.dataone.org/view/83746f58-885c-463a-abbf-d251bda37852

These data are part of the Prince William Sound Herring Survey Program (EVOS project number 10100132-G), of the Exxon Valdez Oil Spill Trustee Council which is a multi-faceted study to determine why herring populations in Prince William Sound remain depressed since the early 1990s. Our fish predators on juvenile herring project dataset is 11 comma-separated values (csv) files exported from a Microsoft Access database with a graphical relationship chart. The original dataset is also provided in Microsoft Acces(.acdb format). The data contain measurements of fish predator abundance and distribution in relation to juvenile herring in a series of bays in Prince William Sound during the 2009/10 through 2011/12 winters. Specifically, fish collections took place during November and March over three winters, beginning in November 2009 and ending March 2012. We deployed 79 longline sets including 61 sets at the five core bays (Eaglek, Lower Herring, Simpson, Whale, and Zaikof). Longlines were set near schools of herring located during hydroacoustic surveys conducted the previous day. For all six cruises we supplemented information on potential predators using variable-mesh gill nets placed perpendicular to shore. For each cruise, we collected up to 30 individuals of each species captured from the combined longline and gill net sets in the sampled bay. Fish were measured (TL, mm) and weighed (g) prior to removal of stomachs for dietary analyses. Stomach contents were analyzed in the laboratory to determine diet composition. Gut contents were sorted into gross taxonomic categories, enumerated and weighed (g). All fish prey items (fish tissue, otoliths and bones such as jaws, vertebrae, etc. as well as partially and fully intact fish prey) were shipped to a second laboratory. There fish were identified to species, estimated to size from hard parts based on published regressions, and counted.