Archived Abstracts

Poster or Presentation Title

Musculoskeletal Anatomy of the Pelvic Sucker in Waterfall-Climbing Gobies

Location

Memorial Ballroom, Hall Campus Center

Access Type

Campus Access Only

Presentation Type

Poster Presentation

Start Date

8-4-2020 12:00 PM

End Date

8-4-2020 1:15 PM

Department

Animal Physiology

Abstract

Sicydiine waterfall-climbing gobies use the pelvic fins that are fused (pelvic sucker) and generate adhesive suction on the substrate. During upstream migration, the adhesive suction allows them to withstand strong stream current as well as gravity during scaling waterfalls. The adhesive suction force is suggested to be generated via coordinated activations of pelvic muscles (protractor and retractor ischii) and pelvic fin muscles (adductor and abductor pelvicus). In this study, we performed a series of dissections and compared the musculoskeletal morphology of these pelvic muscles of Stiphodon sp. with those of previously described Hawaiian waterfall-climbing gobies. Also, in search of homologous muscles in other higher vertebrates, we have explored and examined several candidate muscles. Based on our findings, we discuss the implication of how these particular pelvic muscles have transformed anatomically and functionally through evolution.

Faculty Mentor(s)

Dr. Takashi Maie

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Apr 8th, 12:00 PM Apr 8th, 1:15 PM

Musculoskeletal Anatomy of the Pelvic Sucker in Waterfall-Climbing Gobies

Memorial Ballroom, Hall Campus Center

Sicydiine waterfall-climbing gobies use the pelvic fins that are fused (pelvic sucker) and generate adhesive suction on the substrate. During upstream migration, the adhesive suction allows them to withstand strong stream current as well as gravity during scaling waterfalls. The adhesive suction force is suggested to be generated via coordinated activations of pelvic muscles (protractor and retractor ischii) and pelvic fin muscles (adductor and abductor pelvicus). In this study, we performed a series of dissections and compared the musculoskeletal morphology of these pelvic muscles of Stiphodon sp. with those of previously described Hawaiian waterfall-climbing gobies. Also, in search of homologous muscles in other higher vertebrates, we have explored and examined several candidate muscles. Based on our findings, we discuss the implication of how these particular pelvic muscles have transformed anatomically and functionally through evolution.