Phenanthrene Toxicity on Low Latitude Pelagic Copepods

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Abstract/Contents

Abstract: As increasing fossil fuel emissions are released into the atmosphere, polycyclic aromatic hydrocarbons may be deposited from the atmosphere into the pelagic ocean environment. Most research on polycyclic aromatic hydrocarbons has been regarding benthic sediment and organisms. This study investigates the toxicity of polycyclic aromatic hydrocarbon Phenanthrene in the pelagic open ocean environment of the subtropical pacific. Copepods were exposed to a serial gradient of Phenanthrene in a fixed ratio experiment design. Concentrations of Phenanthrene used were 1 μmol/L, 10 μmol/L1, and 50 μmol/L with a control of plain seawater for each experimental trial. All experiments took place in a shipboard lab on a sailing track from Honolulu, HI [21˚18.9’ N x 157˚ 52.7’ W] to Palmyra Atoll [5˚ 53.2’ N x 162˚ 5.4’ W] to Kirimati Island [2˚ 0.3’ N x 157˚ 29.7’ W] and returning to Honolulu. Copepods were acquired with 1 meter, 333 micron neuston net tows. Subjects showed significant increased mortality under a 50 μmol/L concentration. No significant difference was found between mid and low concentrations [10 μmol/L and 1 μmol/L, respectively] or between the mid and low concentration and the control. Though no significant lethal effects were seen from Phenanthrene in the mid and low concentration treatments, exposure may still decrease fitness, reproduction, or cardiac performance of copepod subjects.

Type of resource	text
Date created	June 12, 2011

Author	Smithee, Tara

Subject	Palmyra Atoll
Subject	Kirimati Island
Subject	phenanthrene toxicity
Subject	copepods
Subject	Stanford@SEA
Subject	S-235
Subject	Hopkins Marine Station
Subject	Department of Biology
Subject	Department of Earth System Science
Subject	BIOHOPK 182H
Subject	BIOHOPK 323H
Subject	EARTHSYS 323
Subject	ESS 323
Genre	Student project report

Location	https://purl.stanford.edu/fk278kj3254

Use and reproduction: User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
License: This work is licensed under a Creative Commons Attribution 3.0 Unported license (CC BY).

Preferred Citation: Smithee, Tara, 2011. Phenanthrene Toxicity on Low Latitude Pelagic Copepods. Unpublished student research paper, S-235, Stanford@SEA, Stanford Digital Repository. https://purl.stanford.edu/fk278kj3254.

Stanford@SEA -- Student papers

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