Author Type

Graduate Student

Date of Award

1982

Document Type

Thesis

Publication Status

Version of Record

Submission Date

October 2026

Abstract

The morphology of the sound producing mechanism is examined in four species of Equetus, an undescribed species of Pareques, Odontoscion dentex, and Umbrina coroides. The mechanism involves a pair of extrinsic sonic muscles which originates on the abdominal body walls and extends upwards to insert on a tendon dorsal to the airbladder. A portion of the airbladder is thus encircled by the sonic muscles and tendon. The fundamental arrangement of the sonic muscles is the same in all the species examined with variations in size, shape, and position of the muscles occurring among species. The sonic muscles are present in males only. A previously undescribed thin-walled area exists in the region demarcated by the sonic muscles on the male airbladder. The basal processes of the first four vertebrae are described in males. No vertebral differences exist between male and female specimens.

Extent

81 p.

Comments

FAU Electronic Theses and Dissertations Collection|Thesis (M.S.)--Florida Atlantic University, 1982.|Charles E. Schmidt College of Science|FAU Electronic Theses and Dissertations Collection

Identifier

FADT14124

Format

pdf

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