Date of Award

Summer 1977

Document Type


Degree Name

Master of Science (MS)


Biological Sciences



Committee Director

Ray S. Birdsong

Committee Member

James Swanson

Committee Member

Edward Wortham

Call Number for Print

Special Collections LD4331.B46 M86


The purpose of this study was to describe the micro and macro-anatomy of the reproductive system and the testicular and ovarian development in Aphredoderus sayanus.

Specimens were collected at least once a month from September, 1976, through May, 1977, in Cypress Pond, a part of the Dismal Swamp drainage, outside of Suffolk, Virginia. Forty-three specimens had their gonads examined histologically, of these 13 were males, 29 were females and in one specimen the sex was not determinable.

Aphredoderus sayanus is a spring spawner, spent gonads were found on and after April 13, 1977. Gonads began to ripen in the fall, testes maturing sooner than ovaries. Sperm was seen in November males, ripe eggs were not seen until April 1, 1977. No ripe males or females were collected after April 30. Newly hatched fry were caught in both the April 13 and April 23 collections.


In Copyright. URI: This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).