Theses and Dissertations - UTB/UTPA
Date of Award
5-2003
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Biology
First Advisor
Dr. Brad C. Henry Jr.
Second Advisor
Dr. Anxiu Kuang
Third Advisor
Dr. Kenneth Summy
Abstract
External egg morphology of ten species of Lower Rio Grande Valley (LRGV) mayflies are compared using scanning electron microscopy (SEM) and a taxonomic key to the eggs is provided. The eggs of five species are described here for the first time. Preserved female adults or subadults were critical-point dried using liquid CO2 . The eggs were removed and placed on metal stubs for sputter coating with gold/palladium. The coated eggs were then observed and photographed by SEM. The morphological features described were the chorionic sculpturing, polar caps, accessory attachment structures, and micropyles. This is the first mayfly egg comparison and key to the genera of mayfly eggs from the LRGV.
Granting Institution
University of Texas-Pan American
Comments
Copyright 2003 Maria D. De Leon. All Rights Reserved.
https://www.proquest.com/dissertations-theses/chorionic-morphology-mayfly-ephemeroptera-eggs/docview/250162817/se-2?accountid=7119