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Quantifying the Genetic Capacity of ...

Tasoff, Alexander J.

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Quantifying the Genetic Capacity of California Grunion (Leuresthes tenuis) to Adapt to Ocean Acidification.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Quantifying the Genetic Capacity of California Grunion (Leuresthes tenuis) to Adapt to Ocean Acidification./
Author:	Tasoff, Alexander J.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	43 p.
Notes:	Source: Masters Abstracts International, Volume: 56-06.
Contained By:	Masters Abstracts International56-06(E).
Subject:	Genetics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10600671
ISBN:	9780355137101

Quantifying the Genetic Capacity of California Grunion (Leuresthes tenuis) to Adapt to Ocean Acidification.
Tasoff, Alexander J.

Quantifying the Genetic Capacity of California Grunion (Leuresthes tenuis) to Adapt to Ocean Acidification. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 43 p.

Source: Masters Abstracts International, Volume: 56-06.

Thesis (M.S.)--California State University, Long Beach, 2017.

Ocean acidification can reduce survival and growth of marine larvae. However, if populations have the genetic capacity to adapt and increase their tolerance to low pH levels, then such genetic changes may offset the harmful effects of ocean acidification. I used methods in quantitative genetics to measure the genetic variance and project the potential rate of evolution for low pH tolerance in a nearshore forage-fish: the California grunion ( Leuresthes tenuis). I raised grunion larvae across an experimental pH gradient and measured their mortality and growth rates over a 14-day interval during the early larval stage. My results indicated that low pH levels significantly decreased the survival rates of grunion larvae overall. Surprisingly, low pH levels did not significantly affect larval growth rates. However, families varied widely with respect to pH tolerance, and many families had similar mortality and growth rates in high and low pH treatments. Quantitative genetic analyses indicated that low pH tolerance had a substantial genetic basis and is highly heritable within grunion populations. These results suggest that populations of California grunion, and possibly other nearshore fishes, may adapt relatively quickly to long-term changes in ocean pH.

ISBN: 9780355137101Subjects--Topical Terms:

530508
Genetics.

Quantifying the Genetic Capacity of California Grunion (Leuresthes tenuis) to Adapt to Ocean Acidification.
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100 1 $a Tasoff, Alexander J. $3 3427177
245 1 0 $a Quantifying the Genetic Capacity of California Grunion (Leuresthes tenuis) to Adapt to Ocean Acidification.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 43 p.
500 $a Source: Masters Abstracts International, Volume: 56-06.
500 $a Adviser: Darren Johnson.
502 $a Thesis (M.S.)--California State University, Long Beach, 2017.
520 $a Ocean acidification can reduce survival and growth of marine larvae. However, if populations have the genetic capacity to adapt and increase their tolerance to low pH levels, then such genetic changes may offset the harmful effects of ocean acidification. I used methods in quantitative genetics to measure the genetic variance and project the potential rate of evolution for low pH tolerance in a nearshore forage-fish: the California grunion ( Leuresthes tenuis). I raised grunion larvae across an experimental pH gradient and measured their mortality and growth rates over a 14-day interval during the early larval stage. My results indicated that low pH levels significantly decreased the survival rates of grunion larvae overall. Surprisingly, low pH levels did not significantly affect larval growth rates. However, families varied widely with respect to pH tolerance, and many families had similar mortality and growth rates in high and low pH treatments. Quantitative genetic analyses indicated that low pH tolerance had a substantial genetic basis and is highly heritable within grunion populations. These results suggest that populations of California grunion, and possibly other nearshore fishes, may adapt relatively quickly to long-term changes in ocean pH.
590 $a School code: 6080.
650 4 $a Genetics. $3 530508
650 4 $a Biological oceanography. $3 2122748
690 $a 0369
690 $a 0416
710 2 $a California State University, Long Beach. $b Biological Sciences. $3 2103584
773 0 $t Masters Abstracts International $g 56-06(E).
790 $a 6080
791 $a M.S.
792 $a 2017
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10600671