It takes guts to locate elusive crustacean prey
2015; Inter-Research; Volume: 538; Linguagem: Inglês
10.3354/meps11481
ISSN1616-1599
AutoresRS Lasley-Rasher, DC Brady, B. D. Smith, PA Jumars,
Tópico(s)Coral and Marine Ecosystems Studies
ResumoMEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 538:1-12 (2015) - DOI: https://doi.org/10.3354/meps11481 FEATURE ARTICLE It takes guts to locate elusive crustacean prey R. S. Lasley-Rasher1,*, D. C. Brady1, B. E. Smith2, P. A. Jumars1 1University of Maine, Darling Marine Center, Walpole, ME 04573, USA 2NOAA, National Marine Fisheries Service, Northeast Fisheries Science Center, 166 Water Street, Woods Hole, MA 02543, USA *Corresponding author: rachel.lasleyrasher@maine.edu ABSTRACT: Mobile crustacean prey, i.e. crangonid, euphausiid, mysid, and pandalid shrimp, are vital links in marine food webs. Their intermediate sizes and characteristic caridoid escape responses lead to chronic underestimation when sampling at large spatial scales with either plankton nets or large trawl nets. Here, as discrete sampling units, we utilized individual fish diets (i.e. fish biosamplers) collected by the US National Marine Fisheries Service and Northeast Fisheries Science Center to examine abundance and location of these prey families over large spatial and temporal scales in the northeastern US shelf large ecosystem. We found these prey families to be important to a wide variety of both juvenile and adult demersal fishes from Cape Hatteras to the Scotian Shelf. Fish biosamplers further revealed significant spatial shifts in prey in early spring. Distributions of mysids and crangonids in fish diets shoaled significantly from February to March. Distributions of euphausiids and pandalids in fish diets shifted northward during March. Of multiple hypotheses for these shifts, prey migration is most strongly supported. Rather than only the classic ontogenetic shift from feeding on shrimp to piscivory, of the 25 identified diet shifts in fish predators, 12 shifts were toward increased shrimp feeding frequency with increasing body length. KEY WORDS: Fish feeding · Northwest Atlantic · Pandalidae · Mysidae · Euphausiidae · Crangonidae · Migration Full text in pdf format Information about this Feature Article Supplementary material NextCite this article as: Lasley-Rasher RS, Brady DC, Smith BE, Jumars PA (2015) It takes guts to locate elusive crustacean prey. Mar Ecol Prog Ser 538:1-12. https://doi.org/10.3354/meps11481 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 538. Online publication date: October 28, 2015 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2015 Inter-Research.
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