Life History and Secondary Production of Caenis latipennis Banks (Ephemeroptera: Caenidae) in Honey Creek, Oklahoma Page: 19
This thesis is part of the collection entitled: UNT Theses and Dissertations and was provided to UNT Digital Library by the UNT Libraries.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
Synchronization of large numbers of adults around annual and diel peaks and short
flight periodicities suggest an r selected adaptive strategy of predator avoidance (Price,
1997). Mackey (1978) suggests a similar adaptive strategy for C. macrura where mass
emergence provides a glut of food which satiates predation, thus increasing frequency of
mating, oviposition and enhancing recruitment.
Mating behavior
Attempts to locate, observe, or sample swarms were unsuccessful. No adults were
collected on hanging tangle trap sheets and no swarms were observed. Although mating
behavior failed to be eludicated, large aggregates of males and females were observed
when using a mercury vapor light trap.
Measurements of pedicel length revealed that male pedicel length was significantly
longer than female pedicel length (two-sample Man Whitney U test, z= 5.6145, p <
0.0001)). Along with more complex locomotive and sensory equipment, males of most
insects have more elaborate eyes and antennal structure (Thornhill and Alcock, 1983).
Brodskiy (1973) has reported similar sexual dimorphism in antennal structure of Caenis,
especially in the pedicel. Caenis males do not have eyes divided into two functional parts
like other mayflies. Eyes as receptors become less useful in swarms after dark.
Increased male pedicel length may provide area for sensory structures used to detect
female wing beat frequencies in low light conditions. Females have larger wings and
therefore the difference in wing beats, tone, and sound intensity should differ between
sexes (Brodskiy, 1973). This mating system has been demonstrated in Culicidae
(Diptera). Roth (1948) found that sound waves emitted from Aedes aegypti female wing
beats stimulate fibrillae of male mosquitoes and relay a signal along the flagellum to the19
Upcoming Pages
Here’s what’s next.
Search Inside
This thesis can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Thesis.
Taylor, Jason M. Life History and Secondary Production of Caenis latipennis Banks (Ephemeroptera: Caenidae) in Honey Creek, Oklahoma, thesis, August 2001; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc2863/m1/26/: accessed March 28, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .