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The role of chemical and visual cues in habitat location and selection by the Sargassum crab Portunus sayi
Title
The role of chemical and visual cues in habitat location and selection by the Sargassum crab Portunus sayi.
Creator
West, Lorin E., Graduate College
Date Issued
2012-03-30
PURL
http://purl.flvc.org/fcla/dt/3342457
Format
Document (PDF)
Habitat location and selection by the Sargassum crab Portunus sayi
Title
Habitat location and selection by the Sargassum crab Portunus sayi: the role of sensory cues.
Creator
West, Lorin E., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description
The Sargassum community consists of a unique and idverse assemblage of fauna critical to pelagic food chains. Associated organisms presumably have adaptations to assist in finding Sargassum. This study investigated cues used for habitat location and selection by the Sargassum crab, Portunus sayi. Chemical detection trials were conducted with a two-chamber choice apparatus with Sargassum spp. and Thalassia testudinum as source odors. Visual detection trials (devoid of chemical cues) and...
Show moreThe Sargassum community consists of a unique and idverse assemblage of fauna critical to pelagic food chains. Associated organisms presumably have adaptations to assist in finding Sargassum. This study investigated cues used for habitat location and selection by the Sargassum crab, Portunus sayi. Chemical detection trials were conducted with a two-chamber choice apparatus with Sargassum spp. and Thalassia testudinum as source odors. Visual detection trials (devoid of chemical cues) and habitat selection trials were conducted in which crabs were given a choice of habitats. Results showed that P. sayi respoded to chemical odors from Sargassum spp. Crabs visually located habitats but did not visually distinguish between different habitats. In habitat selection trials, crabs selected Sargassum spp. over artificial Sargassum and T. testudinum. These results suggest that crabs isolated from Sargassum likely use chemoreception from longer distances ; within visual proximity of a potential patch, crabs use both chemical and visual information.
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Date Issued
2012
PURL
http://purl.flvc.org/FAU/3356901
Subject Headings
Habitat (Ecology), Sargassum, Ecology, Marine chemical ecology, Chemoreceptors, Animal behavior, Animal communication, Portunus sayi, Ecology
Format
Document (PDF)