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Trophic Transfer of a Novel Cyanotox...

Pelletier, Alexander Roger.

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Trophic Transfer of a Novel Cyanotoxin in Fishes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Trophic Transfer of a Novel Cyanotoxin in Fishes./
作者:	Pelletier, Alexander Roger.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	120 p.
附註:	Source: Masters Abstracts International, Volume: 81-08.
Contained By:	Masters Abstracts International81-08.
標題:	Aquatic sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27545508
ISBN:	9781392422953

Trophic Transfer of a Novel Cyanotoxin in Fishes.
Pelletier, Alexander Roger.

Trophic Transfer of a Novel Cyanotoxin in Fishes. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 120 p.

Source: Masters Abstracts International, Volume: 81-08.

Thesis (M.S.)--University of Georgia, 2019.

This item must not be sold to any third party vendors.

Aetokthonotoxin (AETX) is a formally undescribed neurotoxin produced by the cyanobacterium Aetokthonos hydrillicola (Ah). Animals that consume Ah-colonized vegetation may develop vacuolar myelinopathy (VM), a neurological condition causing motor impairment and death. We quantified AETX concentrations in the gastrointestinal tracts and fillets of secondary and tertiary consumer fishes from an Ah-inhabited reservoir. We also created a laboratory food chain involving Ah, an omnivorous fish, and a carnivorous fish to determine the trophic transferability of AETX in fishes. Finally, we used a swim chamber to quantify sublethal effects of AETX in fishes. Although AETX bioaccumulated in fishes, evidence of AETX biomagnification was not found. Fish did not develop VM, nor did AETX affect fish swimming performance. AETX accumulation in primary consumers should be quantified to determine the ecological risk of AETX in various food chains. Mammalian bioassays are also recommended to help determine the risk of AETX consumption in humans.

ISBN: 9781392422953Subjects--Topical Terms:

3174300
Aquatic sciences.
Subjects--Index Terms:

Aetokthonos hydrillicola

Trophic Transfer of a Novel Cyanotoxin in Fishes.
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520 $a Aetokthonotoxin (AETX) is a formally undescribed neurotoxin produced by the cyanobacterium Aetokthonos hydrillicola (Ah). Animals that consume Ah-colonized vegetation may develop vacuolar myelinopathy (VM), a neurological condition causing motor impairment and death. We quantified AETX concentrations in the gastrointestinal tracts and fillets of secondary and tertiary consumer fishes from an Ah-inhabited reservoir. We also created a laboratory food chain involving Ah, an omnivorous fish, and a carnivorous fish to determine the trophic transferability of AETX in fishes. Finally, we used a swim chamber to quantify sublethal effects of AETX in fishes. Although AETX bioaccumulated in fishes, evidence of AETX biomagnification was not found. Fish did not develop VM, nor did AETX affect fish swimming performance. AETX accumulation in primary consumers should be quantified to determine the ecological risk of AETX in various food chains. Mammalian bioassays are also recommended to help determine the risk of AETX consumption in humans.
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