Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Biology
Phylogeographic Analyses Of Obligate And Facultative Cave Crayfish Species On The Cumberland Plateau Of The Southern Appalachians, Jennifer Elizabeth Buhay
Phylogeographic Analyses Of Obligate And Facultative Cave Crayfish Species On The Cumberland Plateau Of The Southern Appalachians, Jennifer Elizabeth Buhay
Theses and Dissertations
Cave systems and their unique biota are widely viewed as highly endangered, yet very little is known about basic life history, ecology, distributions, habitat requirements, and evolutionary relationships of subterranean species. The crux of the problem in cave studies is the assumption that traditionally defined morpho-species represent distinct evolutionary lineages. Convergence is exhibited in the morphologies of many animal groups, vertebrate and invertebrate, which leads to confusion in diagnosing species' boundaries, geographic distributions, gene flow routes, and imperilment. This dissertation research includes phylogeographic analyses of freshwater cave-dwelling crayfishes in the Southern Appalachians, a global hotspot of subterranean biodiversity. By examining …
A Reaction–Diffusion Analysis Of Energetics In Large Muscle Fibers Secondarily Evolved For Aerobic Locomotor Function, Kristin M. Hardy, Bruce R. Locke, Marilia Da Silva, Stephen T. Kinsey
A Reaction–Diffusion Analysis Of Energetics In Large Muscle Fibers Secondarily Evolved For Aerobic Locomotor Function, Kristin M. Hardy, Bruce R. Locke, Marilia Da Silva, Stephen T. Kinsey
Biological Sciences
The muscles that power swimming in the blue crab, Callinectes sapidus, grow hypertrophically, such that in juvenile crabs the cell diameters are
The Use Of The Major Chelae By Reproductive Male Crayfish (Orconectes Rusticus) For Discrimination Of Female Odours, Rachelle M. Belanger, Paul A. Moore
The Use Of The Major Chelae By Reproductive Male Crayfish (Orconectes Rusticus) For Discrimination Of Female Odours, Rachelle M. Belanger, Paul A. Moore
Paul A. Moore
The major chelae have been found to be important structures used for breeding and reproduction in crustaceans; however their role in the detection of conspecific sex odours is unknown. We implemented a behavioural bioassay to test whether male reproductive (form I) and nonreproductive (form II) crayfish (Orconectes rusticus) use their major chelae to detect reproductive female odours. We videotaped and analysed the behavioural reactions of form I and form II males to four different odour treatments: reproductive female-conditioned water, male-conditioned water, filtered fish homogenate (food odour; positive control), and water (negative control) delivered from an air stone (N = 20 …