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Georgia Southern University

1. Ruzicka, Richard Robert. Sponge Community Structure and Anti-Predator Defenses on Temperate Reefs of the South Atlantic Bight.

Degree: MSin Biology (M.S.), Department of Biology, 2005, Georgia Southern University

The interaction between predation and anti-predator defenses of prey is important in shaping community structure in all ecosystems. This study examined the relationship between sponge predation and the distribution of sponge anti-predator defenses on temperate reefs in the South Atlantic Bight. Significant differences in the distribution of sponge species, sponge densities, and densities of sponge predators were documented across two adjacent reef habitats. Significant differences also occurred in the distribution of sponge chemical and structural defenses with chemical deterrence significantly greater in sponges associated with the habitat having higher predation intensity. Structural defenses, although effective in some instances, appear to be inadequate against spongivorous predators thereby restricting the distribution of sponge species lacking chemical defenses to habitats with lower predation intensity. These results, when compared to published data from tropical studies, also indicate that predation pressure and the production of anti-predator defenses may be inversely correlated with latitude. Advisors/Committee Members: Stephen P. Vives, Alan W. Harvey, Bruce A. Schulte.

Subjects/Keywords: ETD; Community structure; Temperate reefs; Sponge; Spongivorous fish; Chemical defenses; Structural defenses; South Atlantic Bight; Animal societies; Jack N. Averitt College of Graduate Studies, Electronic Theses & Dissertations, ETDs, Student Research

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Ruzicka, R. R. (2005). Sponge Community Structure and Anti-Predator Defenses on Temperate Reefs of the South Atlantic Bight. (Masters Thesis). Georgia Southern University. Retrieved from https://digitalcommons.georgiasouthern.edu/etd/705

Chicago Manual of Style (16th Edition):

Ruzicka, Richard Robert. “Sponge Community Structure and Anti-Predator Defenses on Temperate Reefs of the South Atlantic Bight.” 2005. Masters Thesis, Georgia Southern University. Accessed May 09, 2021. https://digitalcommons.georgiasouthern.edu/etd/705.

MLA Handbook (7th Edition):

Ruzicka, Richard Robert. “Sponge Community Structure and Anti-Predator Defenses on Temperate Reefs of the South Atlantic Bight.” 2005. Web. 09 May 2021.

Vancouver:

Ruzicka RR. Sponge Community Structure and Anti-Predator Defenses on Temperate Reefs of the South Atlantic Bight. [Internet] [Masters thesis]. Georgia Southern University; 2005. [cited 2021 May 09]. Available from: https://digitalcommons.georgiasouthern.edu/etd/705.

Council of Science Editors:

Ruzicka RR. Sponge Community Structure and Anti-Predator Defenses on Temperate Reefs of the South Atlantic Bight. [Masters Thesis]. Georgia Southern University; 2005. Available from: https://digitalcommons.georgiasouthern.edu/etd/705

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