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Population Ecology and Comparison of Methods for Sampling Invasive Round Goby (Neogobius melanostomus) in Leboeuf Lake, Pennsylvania.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Population Ecology and Comparison of Methods for Sampling Invasive Round Goby (Neogobius melanostomus) in Leboeuf Lake, Pennsylvania./
Author:	Byington, Darby.
Description:	1 online resource (101 pages)
Notes:	Source: Masters Abstracts International, Volume: 84-03.
Contained By:	Masters Abstracts International84-03.
Subject:	Biology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29318692click for full text (PQDT)
ISBN:	9798841746928

Population Ecology and Comparison of Methods for Sampling Invasive Round Goby (Neogobius melanostomus) in Leboeuf Lake, Pennsylvania.
Byington, Darby.

Population Ecology and Comparison of Methods for Sampling Invasive Round Goby (Neogobius melanostomus) in Leboeuf Lake, Pennsylvania. - 1 online resource (101 pages)

Source: Masters Abstracts International, Volume: 84-03.

Thesis (M.S.)--Indiana University of Pennsylvania, 2022.

Includes bibliographical references

The invasion of round goby (Neogobius melanostomus) into the upper Ohio River basin through French Creek poses a threat to native fish communities. In 2014, Round Goby were discovered in the French Creek watershed, likely introduced via bait-bucket in LeBoeuf Lake (Erie county, PA). To better understand and manage this recently introduced population, we assessed round goby population characteristics and compared the effectiveness of different sampling gears in LeBoeuf Lake. Three gear types (fyke nets, minnow traps, and electrified benthic trawl) were compared during sampling events in April and August 2021. Electrified benthic trawl was the most effective method for capturing round gobies. In April, we captured 88 round gobies using electrified benthic trawl, two with fyke nets, and one with minnow traps. For August sampling, 312 round gobies were captured using electrified benthic trawl, one with fyke nets, and zero with minnow traps. Age structure analysis indicated an established, naturally reproducing population of round gobies in LeBoeuf Lake consisting of individuals up to 2 years old. Round gobies less than 45 mm made up 51% of the April catch, 39% were 50-60 mm, and 9% were 65-95 mm. The August round goby catch was dominated by the smallest size class (presumably young-of-the-year), with 87% less than 45 mm, 5% 50-60 mm, and 8% 65-109 mm. Estimated ages of gravid round gobies in April was as early as age-1, sizes ranged from 46-90 mm, with ova numbers ranging from 63 to 282. No gravid females were captured in August, indicating round goby finish spawning in August in LeBoeuf Lake. Results also showed that the spatial distribution of gobies changed from April to August. In April, 95% of the catch was at the outlet, 3% at the inlet, and 2% between the inlet and outlet. During the August sampling date, 68% of the catch was at the outlet, 25% at the inlet, and 7% at other sites near the inlet and outlet and past the lake inlet and outlet. We anticipate the site-specific and most successful gear type information generated by our study will aid management agencies in evaluating suppression and eradication efforts.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798841746928Subjects--Topical Terms:

522710
Biology.
Subjects--Index Terms:

InvasiveIndex Terms--Genre/Form:

542853
Electronic books.

Population Ecology and Comparison of Methods for Sampling Invasive Round Goby (Neogobius melanostomus) in Leboeuf Lake, Pennsylvania.
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500 $a Source: Masters Abstracts International, Volume: 84-03.
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504 $a Includes bibliographical references
520 $a The invasion of round goby (Neogobius melanostomus) into the upper Ohio River basin through French Creek poses a threat to native fish communities. In 2014, Round Goby were discovered in the French Creek watershed, likely introduced via bait-bucket in LeBoeuf Lake (Erie county, PA). To better understand and manage this recently introduced population, we assessed round goby population characteristics and compared the effectiveness of different sampling gears in LeBoeuf Lake. Three gear types (fyke nets, minnow traps, and electrified benthic trawl) were compared during sampling events in April and August 2021. Electrified benthic trawl was the most effective method for capturing round gobies. In April, we captured 88 round gobies using electrified benthic trawl, two with fyke nets, and one with minnow traps. For August sampling, 312 round gobies were captured using electrified benthic trawl, one with fyke nets, and zero with minnow traps. Age structure analysis indicated an established, naturally reproducing population of round gobies in LeBoeuf Lake consisting of individuals up to 2 years old. Round gobies less than 45 mm made up 51% of the April catch, 39% were 50-60 mm, and 9% were 65-95 mm. The August round goby catch was dominated by the smallest size class (presumably young-of-the-year), with 87% less than 45 mm, 5% 50-60 mm, and 8% 65-109 mm. Estimated ages of gravid round gobies in April was as early as age-1, sizes ranged from 46-90 mm, with ova numbers ranging from 63 to 282. No gravid females were captured in August, indicating round goby finish spawning in August in LeBoeuf Lake. Results also showed that the spatial distribution of gobies changed from April to August. In April, 95% of the catch was at the outlet, 3% at the inlet, and 2% between the inlet and outlet. During the August sampling date, 68% of the catch was at the outlet, 25% at the inlet, and 7% at other sites near the inlet and outlet and past the lake inlet and outlet. We anticipate the site-specific and most successful gear type information generated by our study will aid management agencies in evaluating suppression and eradication efforts.
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650 4 $a Limnology. $3 545788
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653 $a Invasive
653 $a LeBoeuf Lake
653 $a Round goby
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710 2 $a Indiana University of Pennsylvania. $b Biology. $3 3434060
773 0 $t Masters Abstracts International $g 84-03.
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