Intraspecific variation in feeding mechanics and bite force in durophagous stingrays
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

For very narrow results

When looking for a specific result

Best used for discovery & interchangable words

Recommended to be used in conjunction with other fields

Dates

to

Document Data
Library
People
Clear All
Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Intraspecific variation in feeding mechanics and bite force in durophagous stingrays

Filetype[PDF-496.96 KB]


Details You May Also Like

Details:

  • Journal Title:
    Journal of Zoology
  • Personal Author:
  • NOAA Program & Office:
    NOAA General Documents
  • Description:
    Animal performance is tightly linked to morphological function, whereby changes in size and performance can influence niche dynamics over ontogeny. To understand how growth affects feeding performance, we examined how bite force over ontogeny differed between two populations of durophagous stingrays, Rhinoptera bonasus (from the Chesapeake Bay and the Florida Gulf Coast, USA). Cownose stingrays from the Chesapeake Bay specialize on mollusks, whereas Gulf of Mexico stingrays are omnivorous, feeding on a variety of benthic invertebrates. Increases in jaw adductor size resulted in positive bite force allometry across ontogeny in both stingray populations. However, scaling patterns between muscle units differed between the populations, with more drastic increases in bite force over ontogeny in populations feeding on more robust prey. Mechanical testing of the fracture forces of prey suggests that juvenile bivalves are particularly vulnerable to predation by either stingray population. However, Gulf coast stingrays exhibit lower bite forces across ontogeny compared to Chesapeake rays. Chesapeake Bay rays are born larger, further exaggerating the performance disparity between these populations. Although these animals generate considerable bite forces, their ability to comminute bivalves at marketable sizes is doubtful.
  • Keywords:
  • Source:
    Journal of Zoology, 304(4), 225-234
  • DOI:
  • ISSN:
    0952-8369;1469-7998;
  • Format:
    PDF
  • Publisher:
    Wiley
  • Document Type:
    Journal Article
  • Rights Information:
    Accepted Manuscript
  • Compliance:
    Library
  • Main Document Checksum:
  • Download URL:
  • File Type:

Supporting Files

  • No Additional Files
More +

You May Also Like

Checkout today's featured content at repository.library.noaa.gov

Version 3.27.1