* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Friday, August 8, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Peacock’s Biggest Action Show Streams 2 New Episodes Sooner Than You Think – yahoo.com

    Peacock’s Hottest Action Show Drops 2 New Episodes Sooner Than Expected!

    Themed Entertainment Design – Purdue Polytechnic

    Innovative Themed Entertainment Design: Creating Immersive Experiences

    Rachael Leigh Cook and Brandon Routh ‘Happy to Have Found Each Other’ Following Respective Divorces – yahoo.com

    Rachael Leigh Cook and Brandon Routh ‘Happy to Have Found Each Other’ Following Respective Divorces – yahoo.com

    ‘Billie Jean’ – Hyde Park Herald

    The Enduring Magic Behind ‘Billie Jean’ Revealed

    Hank Hill returns to a changed world in new ‘King of the Hill’ episodes – New Haven Register

    Hank Hill Navigates a Bold New World in Thrilling New ‘King of the Hill’ Episodes

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    MBU showcases student work at Occupational Therapy Technology Fair – WHSV

    Discover the Most Innovative Student Projects at the Occupational Therapy Technology Fair

    BlackSky Technology Inc. (BKSY) Reports Q2 Loss, Lags Revenue Estimates – Yahoo Finance

    BlackSky Technology Inc. Reports Q2 Loss, Misses Revenue Targets

    Improved Technology Access: A Key to Closing the Healthcare Gap for African Americans – BIOENGINEER.ORG

    LMI Expands Technology Org, Appoints New Leaders – GovCon Wire

    LMI Expands Technology Team with Dynamic New Leadership Appointments

    Midland Innovation and Technology Charter School closing down – CBS News

    Midland Innovation and Technology Charter School Closes Permanently

    Future Trends In HR Technology – Dataconomy

    Future Trends In HR Technology – Dataconomy

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Peacock’s Biggest Action Show Streams 2 New Episodes Sooner Than You Think – yahoo.com

    Peacock’s Hottest Action Show Drops 2 New Episodes Sooner Than Expected!

    Themed Entertainment Design – Purdue Polytechnic

    Innovative Themed Entertainment Design: Creating Immersive Experiences

    Rachael Leigh Cook and Brandon Routh ‘Happy to Have Found Each Other’ Following Respective Divorces – yahoo.com

    Rachael Leigh Cook and Brandon Routh ‘Happy to Have Found Each Other’ Following Respective Divorces – yahoo.com

    ‘Billie Jean’ – Hyde Park Herald

    The Enduring Magic Behind ‘Billie Jean’ Revealed

    Hank Hill returns to a changed world in new ‘King of the Hill’ episodes – New Haven Register

    Hank Hill Navigates a Bold New World in Thrilling New ‘King of the Hill’ Episodes

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

    Exclusive | Fox Takes Stake in IndyCar Owner Penske Entertainment – The Wall Street Journal

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    MBU showcases student work at Occupational Therapy Technology Fair – WHSV

    Discover the Most Innovative Student Projects at the Occupational Therapy Technology Fair

    BlackSky Technology Inc. (BKSY) Reports Q2 Loss, Lags Revenue Estimates – Yahoo Finance

    BlackSky Technology Inc. Reports Q2 Loss, Misses Revenue Targets

    Improved Technology Access: A Key to Closing the Healthcare Gap for African Americans – BIOENGINEER.ORG

    LMI Expands Technology Org, Appoints New Leaders – GovCon Wire

    LMI Expands Technology Team with Dynamic New Leadership Appointments

    Midland Innovation and Technology Charter School closing down – CBS News

    Midland Innovation and Technology Charter School Closes Permanently

    Future Trends In HR Technology – Dataconomy

    Future Trends In HR Technology – Dataconomy

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Researchers discover one-of-a-kind fish is local to lower Susquehanna

June 26, 2023
in Science
Researchers discover one-of-a-kind fish is local to lower Susquehanna
Share on FacebookShare on Twitter

Penn State researchers discover one-of-a-kind fish is local to lower Susquehanna

The effort to save the Chesapeake logperch is novel, Penn State researchers say, because not many restoration projects of this magnitude are done to prevent a species from being added to the federal endangered species list. Credit: Penn State

In an attempt to rescue a rare darter in the lower Susquehanna River, a Penn State research team, working with the Pennsylvania Fish and Boat Commission, has determined that the fish is a distinct subspecies found nowhere else. And that makes the effort to restore its population even more important, the researchers say.

A yellow- to olive-colored member of the darter family with dark bars often arrayed in zebra fashion, the Chesapeake logperch is typically just a few inches long, with a small mouth and a short, conical snout. It is believed to only ever have inhabited the lower drainages of the Susquehanna and Potomac rivers, and it has not been seen in the Potomac since the late 1930s.

To reach their conclusion that the Chesapeake logperch, Percina bimaculata, is one of a kind—recently published in Fishes—the researchers collected thousands of specimens of logperch using seines, electrofishing units and electrified benthic trawls from the Allegheny River, from tributaries of Lake Erie and from the lower Susquehanna River. They also included specimens from the Mississippi River drainage, collected in Illinois and Minnesota and stored at the Illinois Natural History Survey, in the study.

To compare the fish from the different populations, researchers made 18 measurements and seven counts on specimens, quantifying characteristics such as the presence or absence of scales on the fishes’ nape, and the number of rays of the pectoral fin, lateral-line scales and gill rakers.

“We concluded that the Chesapeake logperch found in the lower Susquehanna River and a few of its tributaries is not the same as closely related fish found in the other drainages,” said team leader Jay Stauffer, distinguished professor of ichthyology at Penn State. “That makes our project to rescue and reintroduce the fish into the river and tributaries even more urgent.”

Stauffer and his research group in Penn State’s College of Agricultural Sciences, in conjunction with Doug Fischer of the Pennsylvania Fish & Boat Commission, just concluded a four-year effort to restore the logperch population in the lower Susquehanna.

For the reintroduction, Stauffer and several graduate students completed underwater snorkel surveys in sections of the lower Susquehanna and select tributaries, capturing Chesapeake logperch and determining which habitats the fish frequents. They surveyed and collected fish from the Susquehanna River below the Holtwood Dam in Pennsylvania and in six tributaries.

In Maryland, the researchers collected darters from just below Conowingo Dam and in the Susquehanna Flats at the river’s mouth in the Chesapeake Bay.

The researchers then cultured—which means breeding and raising in this context—some 2,000 Chesapeake logperch in Penn State facilities and introduced the fish into selected spots with good habitats in their historical range in the Susquehanna River drainage.

“We tagged all Chesapeake logperch that were cultured before releasing them so they could be identified later, and we were able to recapture a few around Columbia,” Stauffer said. “And we also put electronic tags in a whole series of fish we put in Conodoquinet Creek, to see if they migrate out to the Susquehanna River. Unfortunately, we didn’t have enough time to see if they came back to spawn, so we’re continuing some of this work and seeking other funding.”

The fish has been a victim of past pollution, Stauffer pointed out, but now is threatened by predation by voracious invasive fishes, including the northern snakehead, flathead catfish and blue catfish that are colonizing the lower Susquehanna. The numbers of the Chesapeake logperch have dwindled significantly in the river and a few of its tributaries.

“Few people realize how serious and pervasive the threat invasive predatory fish present to native benthic fish fauna,” Stauffer said.

Already listed as endangered in Pennsylvania and Maryland, the Chesapeake logperch is on the verge of being added to the federal endangered species list. That could have dire consequences for the lower Susquehanna River, Stauffer warned.

“We don’t want to see that happen, because the Chesapeake logperch being federally listed would cause a lot of problems with development in the lower Susquehanna River basin and also with development around the upper Chesapeake Bay,” he said. “We think that we can restore the Chesapeake logperch to its original distribution in the Susquehanna River by culturing and translocating it and reintroducing it to its native habitat. But it is going to take some more time and perhaps more introductions.”

The effort to save the Chesapeake logperch is novel, Stauffer believes.

“There has been quite a bit of work done in the last 10 years or so trying to restore fishes to their habitats, but there are not many restoration projects of this magnitude with a species that has not been federally listed,” he said. “To try to prevent a species from being federally listed is pretty unique.”

Why go to all this trouble to save this unimpressive little fish? Stauffer admitted he has asked himself that question. Because the Chesapeake logperch has no commercial value and it is not of recreational importance, a conventional cost-benefit analysis on losing the fish cannot be performed, he conceded.

“If it goes extinct, we have lost another species that inhabits the Earth,” he said. “I think there is something to be said for preserving the biodiversity of our aquatic systems. When a species goes extinct, it’s gone forever. You don’t get it back.”

At one point, Stauffer, 72, viewed the just-concluded first phase of the Chesapeake logperch rescue and reintroduction as his final research project. But now he wants to finish the job.

“I think I’m going to see this thing though and not retire for a while,” he said.

Contributing to the research were Jonathan Freedman, former graduate student; Douglas Fischer, Pennsylvania Fish and Boat Commission; and Robert Criswell, retired from the Pennsylvania Game Commission.

More information:
Jay R. Stauffer et al, Morphological Comparison of the Chesapeake Logperch Percina bimaculata with the Logperch Percina c. caprodes and Percina c. semifasciata in Pennsylvania, Fishes (2023). DOI: 10.3390/fishes8060288

Citation:
Researchers discover one-of-a-kind fish is local to lower Susquehanna (2023, June 23)
retrieved 25 June 2023
from https://phys.org/news/2023-06-one-of-a-kind-fish-local-susquehanna.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Phys.org – https://phys.org/news/2023-06-one-of-a-kind-fish-local-susquehanna.html

Tags: discoverResearchersscience
Previous Post

Study suggests 21st century economic growth will be slower than expected

Next Post

SpaceX tender offer values it at around $150bn: report

Netflix Scores Canadian Rights To FIFA Women’s World Cup For Next Two Tournaments – Deadline

Netflix Scores Canadian Rights To FIFA Women’s World Cup For Next Two Tournaments – Deadline

August 8, 2025
Professor Emeritus Peter Temin, influential and prolific economic historian, dies at 87 – MIT News

Renowned Economic Historian Professor Peter Temin Dies at 87

August 8, 2025
Peacock’s Biggest Action Show Streams 2 New Episodes Sooner Than You Think – yahoo.com

Peacock’s Hottest Action Show Drops 2 New Episodes Sooner Than Expected!

August 8, 2025
Nebraska doctors struggling with mental health issues had nowhere to go, until now – KSNB

Nebraska doctors struggling with mental health issues had nowhere to go, until now – KSNB

August 8, 2025
White House readies order to fine banks for dropping clients over politics, WSJ reports – Reuters

White House readies order to fine banks for dropping clients over politics, WSJ reports – Reuters

August 8, 2025
Icing‐related injuries in polar bears (Ursus maritimus) at high latitudes – Laidre – 2024 – Ecology – ESA Journals

Frozen Peril: The Devastating Impact of Icing Injuries on Polar Bears in the High Arctic

August 8, 2025
Carnegie Science Center launching new name in September – CBS News

Carnegie Science Center Unveils Exciting New Name This September

August 8, 2025
Petersburg youth explore Coho Creek for science education – Petersburg Pilot

Petersburg Youth Dive into Science with Hands-On Exploration of Coho Creek

August 8, 2025
Is there a path to healthier aging? What the latest research shows | Bodyworks – The Oklahoman

Is there a path to healthier aging? What the latest research shows | Bodyworks – The Oklahoman

August 8, 2025
MBU showcases student work at Occupational Therapy Technology Fair – WHSV

Discover the Most Innovative Student Projects at the Occupational Therapy Technology Fair

August 8, 2025

Categories

Archives

August 2025
MTWTFSS
 123
45678910
11121314151617
18192021222324
25262728293031
« Jul    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (760)
  • Economy (783)
  • Entertainment (21,660)
  • General (16,352)
  • Health (9,823)
  • Lifestyle (793)
  • News (22,149)
  • People (784)
  • Politics (793)
  • Science (15,996)
  • Sports (21,280)
  • Technology (15,763)
  • World (766)

Recent News

Netflix Scores Canadian Rights To FIFA Women’s World Cup For Next Two Tournaments – Deadline

Netflix Scores Canadian Rights To FIFA Women’s World Cup For Next Two Tournaments – Deadline

August 8, 2025
Professor Emeritus Peter Temin, influential and prolific economic historian, dies at 87 – MIT News

Renowned Economic Historian Professor Peter Temin Dies at 87

August 8, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version