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EFFECTS OF HOST POPULATION FRAGMENTATION AND ISOLATION ON THE GENETIC STRUCTURE OF AN OBLIGATE ENDOPARASIT
Title
EFFECTS OF HOST POPULATION FRAGMENTATION AND ISOLATION ON THE GENETIC STRUCTURE OF AN OBLIGATE ENDOPARASIT.
Creator
Maggio, Garrett J., McCoy, Michael W., Florida Atlantic University, Department of Environmental Sciences, Charles E. Schmidt College of Science
Abstract/Description
Pleurogonius malaclemys is a digenean trematode with a life cycle that begins in Ilyanassa obsoleta as a first and second intermediate host and Malaclemys terrapin as a definitive host. The fluke matures and reproduces within terrapins and, therefore, relies on terrapins for dispersal. Thus, we hypothesized that the genetic structure of flukes would reflect contemporary changes in the connectivity of terrapin populations. Flukes were sampled by dissecting mudsnails collected from eight sites...
Show morePleurogonius malaclemys is a digenean trematode with a life cycle that begins in Ilyanassa obsoleta as a first and second intermediate host and Malaclemys terrapin as a definitive host. The fluke matures and reproduces within terrapins and, therefore, relies on terrapins for dispersal. Thus, we hypothesized that the genetic structure of flukes would reflect contemporary changes in the connectivity of terrapin populations. Flukes were sampled by dissecting mudsnails collected from eight sites along the eastern United States. Following amplification of the COI mitochondrial marker, 21 haplotypes were identified and a high degree of structure was detected. We propose that this suggests the parasite could serve as a tool for monitoring terrapin populations. This study sets a foundation for the genetic diversity of the fluke, and provides a first step towards developing the species as a proxy for studying terrapin population size, connectivity, and health, which may help conserve both species.
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Date Issued
2023
PURL
http://purl.flvc.org/fau/fd/FA00014214
Subject Headings
Trematoda, Endoparasitic flukes, Terrapins, Host-parasite relationships
Format
Document (PDF)
Nest architecture and social parasites of the pyramid ant, Dorymyrmex bureni
Title
Nest architecture and social parasites of the pyramid ant, Dorymyrmex bureni.
Creator
Quach, Phuc., Harriet L. Wilkes Honors College
Abstract/Description
The pyramid ant, Dorymyrmex bureni, is one of the most common and conspicuous ants of open, sandy habitats in the southeastern US. To examine the architecture of D. bureni nests in different habitats, I made wax casts of the subterranean tunnels and chambers of nests in a disturbed college campus site (n=3) and a relatively undisturbed greenway preserve site (n=5). Nests of pyramid ant, Dorymyrmex bureni, consist of two basic units : horizontal chambers and descending shafts connecting them....
Show moreThe pyramid ant, Dorymyrmex bureni, is one of the most common and conspicuous ants of open, sandy habitats in the southeastern US. To examine the architecture of D. bureni nests in different habitats, I made wax casts of the subterranean tunnels and chambers of nests in a disturbed college campus site (n=3) and a relatively undisturbed greenway preserve site (n=5). Nests of pyramid ant, Dorymyrmex bureni, consist of two basic units : horizontal chambers and descending shafts connecting them. Chambers near the surface are tunnel-like with branches arranged in a nexus, while deeper chambers were more compact in outline. Chamber height is more or less constant, but chamber shape becomes more complex and lobed in characteristic ways as chambers enlarge. Nests have a top-heavy distribution of chamber area at all sizes because chambers are larger and closer together in the upper nest regions.
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Date Issued
2012
PURL
http://purl.flvc.org/FAU/3359322
Subject Headings
Ants, Nests, Insect societies, Insects, Behavior, Parasites, Behavior, Host-parasite relationships
Format
Document (PDF)
SENSORY BASIS OF HOST LOCATION BY THE PEARLFISH, CARAPUS BERMUDENSIS (JONES)
Title
THE SENSORY BASIS OF HOST LOCATION BY THE PEARLFISH, CARAPUS BERMUDENSIS (JONES).
Creator
VAN METER, VICTORIA BROOK., Florida Atlantic University
Abstract/Description
This study was designed to determine the sensory basis of host location by the pearlfish, Carapus bermudensis (Jones). Forty-eight hour aquaria observations and examination of stomach contents revealed that pearlfish emerge, probably nightly, shortly after dark and feed on small crustaceans. Experiments in a two-way choice apparatus demonstrate that pearlfish locate the host holothurian, Actinopyga agassizi (Selenka), by olfaction. Vision and rheotaxis are not used as alternative methods of'...
Show moreThis study was designed to determine the sensory basis of host location by the pearlfish, Carapus bermudensis (Jones). Forty-eight hour aquaria observations and examination of stomach contents revealed that pearlfish emerge, probably nightly, shortly after dark and feed on small crustaceans. Experiments in a two-way choice apparatus demonstrate that pearlfish locate the host holothurian, Actinopyga agassizi (Selenka), by olfaction. Vision and rheotaxis are not used as alternative methods of' host location or in conjunction with olfaction. These findings are analyzed in terms of the present knowledge of sensory competence in fish.
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Date Issued
1974
PURL
http://purl.flvc.org/fcla/dt/13628
Subject Headings
Carapidae, Sea cucumbers, Host-parasite relationships
Format
Document (PDF)
The life history of the gastropod ThyonicolaAmericana Tikasingh, endoparasitic in a seasonally eviscerating holothurian host
Title
The life history of the gastropod ThyonicolaAmericana Tikasingh, endoparasitic in a seasonally eviscerating holothurian host.
Creator
Byrne, M., Harbor Branch Oceanographic Institute
Date Issued
1985
PURL
http://purl.flvc.org/fau/fd/FA00007081
Subject Headings
Parasitic gastropods, Holothurians, Sea cucumbers, Autotomy, Host-parasite relationships
Format
Document (PDF)