Tools

LEADER 03943cam 2200577Ii 4500

001 on1257305036;

003 OCoLC;

005 20210909014716.0;

006 m o d ;

007 cr unu||||||||;

008 210622s2020 ncuab obm 000 0 eng d;

035 a| (Sirsi) o1257305036;

035 a| (OCoLC)1257305036;

043 a| nwpr---;

049 a| EREE;

090 a| HD8039.F652;

100 1 a| Raab, Henry R.,e| author.?| UNAUTHORIZED;

245 10 a| Fishers' perceptions of ciguatoxin fish poisoning and modeling biomagnification of ciguatoxin in the trophic dynamics of Caribbean coral reef ecosystems /c| by Henry R. Raab.;

264 1 a| [Greenville, N.C.] :b| [East Carolina University],c| 2020.;

300 a| 331 pages :b| illustrations (some color), maps;

336 a| textb| txt2| rdacontent;

337 a| computerb| c2| rdamedia;

338 a| online resourceb| cr2| rdacarrier;

347 a| text fileb| PDFc| 6.315 MB2| rda;

538 a| System requirements: Adobe Reader.;

538 a| Mode of access: World Wide Web.;

502 b| Ph.D.c| East Carolina Universityd| 2020.;

500 a| Presented to the faculty of the Department of Integrated Coastal Sciences;

500 a| Advisor: Joseph J. Luczkovich;

500 a| Title from PDF t.p. (viewed September 1, 2021).;

520 3 a| Ciguatoxin fish poisoning (CFP) is caused by the consumption of tropical and subtropical fishes and other marine species with high levels of ciguatoxin (CTX) in their tissues. CTX is a polycyclic neurotoxin produced by single-celled, photosynthetic dinoflagellates in the Gambierdiscus and Fukuyoa genera which are found in close association with benthic autotrophs. CTX enters the food web when these dinoflagellates are inadvertently consumed by herbivores grazing on their preferred substrates. The toxin biomagnifies up the food chain to the top predators and if humans consume seafood with high levels of CTX it can cause a variety of harsh symptoms. The best way to avoid CFP is to avoid toxic fishes. However, CTX is undetectable by physical inspection. To help prevent CFP cases, I, along with my colleagues, created two predictive models in Ecopath with Ecosim with data we collected and data from the literature, for areas in Puerto Rico, identified as CTX hotspots and coldspots by fishers. I confirmed the fishers' information by sampling fishes and estimating CTX levels in their tissues using a bioassay. We also collected toxic dinoflagellates and show here that the hotspot had much higher densities of these cells than the coldspot. We recommend managers in Puerto Rico establish a routine monitoring program for the toxic dinoflagellates to be used in conjunction with the models presented here to help predict when certain fishes may be toxic along specific reefs. This would mean a safer, more efficient, and more robust fishing economy in Puerto Rico.;

504 a| Includes bibliographical references.;

650 0 a| Fishersz| Puerto Ricox| Attitudes.=| ^A57612;

650 0 a| Poisonous fishesx| Toxicologyz| Puerto Rico.=| ^A1428286;

650 0 a| Reef fishesx| Environmental aspectsz| Puerto Rico.=| ^A850902;

650 0 a| Foodborne diseases.=| ^A465690;

653 a| Ciguatera;

653 a| fish poisoning;

653 a| ecological modeling;

653 a| biomagnification;

653 a| traditional ecological knowledge;

700 1 a| Luczkovich, Joseph J.,e| degree supervisor.=| ^A591932;

710 2 a| East Carolina University.b| Coastal Resources Management Program.?| UNAUTHORIZED;

856 40 z| Access via ScholarShipu| http://hdl.handle.net/10342/9099;

949 o| wjh;

994 a| C0b| ERE;

596 a| 1 4;

998 a| 5636902;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 5636902-1001l| JNETm| JOYNERr| Ys| Yt| JNE3ETDu| 6/22/2021x| ETDz| JERESOURCE;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 5636902-2001l| HSLELECm| HSLr| Ys| Yt| HEETDu| 6/22/2021x| ETDz| HERESOURCE;

Fishers' perceptions of ciguatoxin fish poisoning and modeling biomagnification of ciguatoxin in the trophic dynamics of Caribbean coral reef ecosystems / by Henry R. Raab.

Author/creator	Raab, Henry R. author.
Other author	Luczkovich, Joseph J., degree supervisor.
Other author	East Carolina University. Coastal Resources Management Program.
Format	Theses and dissertations
Publication	[Greenville, N.C.] : [East Carolina University], 2020.
Description	331 pages : illustrations (some color), maps
Supplemental Content	Access via ScholarShip
Subjects	Fishers--Puerto Rico. --Attitudes. Poisonous fishes--Toxicology. --Puerto Rico. Reef fishes--Environmental aspects. --Puerto Rico. Foodborne diseases.

Summary	Ciguatoxin fish poisoning (CFP) is caused by the consumption of tropical and subtropical fishes and other marine species with high levels of ciguatoxin (CTX) in their tissues. CTX is a polycyclic neurotoxin produced by single-celled, photosynthetic dinoflagellates in the Gambierdiscus and Fukuyoa genera which are found in close association with benthic autotrophs. CTX enters the food web when these dinoflagellates are inadvertently consumed by herbivores grazing on their preferred substrates. The toxin biomagnifies up the food chain to the top predators and if humans consume seafood with high levels of CTX it can cause a variety of harsh symptoms. The best way to avoid CFP is to avoid toxic fishes. However, CTX is undetectable by physical inspection. To help prevent CFP cases, I, along with my colleagues, created two predictive models in Ecopath with Ecosim with data we collected and data from the literature, for areas in Puerto Rico, identified as CTX hotspots and coldspots by fishers. I confirmed the fishers' information by sampling fishes and estimating CTX levels in their tissues using a bioassay. We also collected toxic dinoflagellates and show here that the hotspot had much higher densities of these cells than the coldspot. We recommend managers in Puerto Rico establish a routine monitoring program for the toxic dinoflagellates to be used in conjunction with the models presented here to help predict when certain fishes may be toxic along specific reefs. This would mean a safer, more efficient, and more robust fishing economy in Puerto Rico.
General note	Presented to the faculty of the Department of Integrated Coastal Sciences
General note	Advisor: Joseph J. Luczkovich
General note	Title from PDF t.p. (viewed September 1, 2021).
Dissertation note	Ph.D. East Carolina University 2020.
Bibliography note	Includes bibliographical references.
Technical details	System requirements: Adobe Reader.
Technical details	Mode of access: World Wide Web.

Availability

Library	Location	Call Number	Status	Item Actions
	Electronic Resources	Access Content Online	✔ Available

Fishers' perceptions of ciguatoxin fish poisoning and modeling biomagnification of ciguatoxin in the trophic dynamics of Caribbean coral reef ecosystems / by Henry R. Raab.

Click here for more information about this title

Availability