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Discovery of a large offshore population of the northeast Pacific burrowing shrimp Neotrypaea sp. (Decapoda: Axiidea)

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  • Journal Title:
    Estuarine, Coastal and Shelf Science
  • Personal Author:
  • NOAA Program & Office:
    NOAA General Documents
  • Description:
    The burrowing ghost shrimp Neotrypaea californiensis and Neotrypaea gigas, are recognized primarily from soft-sediment intertidal mudflats of estuaries and coastal lagoons in the northeastern Pacific from southern Alaska to Baja California. Individual records, however, are also known from occasional deep-water offshore collections. In previous offshore grab samples from California to Washington, USA, Neotrypaea spp. were present in about 14% of stations between 20 and 130 m depth. We assumed these usually low density (1–2 per core) small individuals were errant settlers from estuarine sources until summer 2019 when we found the first known large multi-year class population in an area 58–77 m deep 12 km offshore of Newport, Oregon, USA. The newly discovered Neotrypaea population, that we tentatively identify as Neotrypaea gigas, occurred at 35 of 52 stations (67%) in densities up to 26 individuals per 0.1 m2 box core and included multiple size classes. Plan view camera samples indicate burrow densities of over 400 openings m−2. This is the first report of a major burrowing shrimp population on the continental northeast Pacific coastal ocean.
  • Keywords:
  • Source:
    Estuarine, Coastal and Shelf Science, 274, 107936
  • DOI:
  • ISSN:
    0272-7714
  • Format:
    PDF
  • Publisher:
    Elsevier BV
  • Document Type:
    Journal Article
  • Rights Information:
    Accepted Manuscript
  • Compliance:
    Library
  • Main Document Checksum:
    urn:sha256:fcf74079ef2e8c2a7571dde400f556cbe549bfa909ae85e03836d5d58b23f943
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  • File Type:
    Filetype[PDF - 1.53 MB ]
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