RUcore: Rutgers University Community Repository
Movement of summer flounder (Paralichthys dentatus)
Descriptive
TitleInfo
Title
Movement of summer flounder (Paralichthys dentatus)
SubTitle
application of telemetry to understand ecology and bycatch discard mortality
Name
(type = personal)
NamePart
(type = family)
Yergey
NamePart
(type = given)
Matthew E.
NamePart
(type = date)
1986-
DisplayForm
Matthew Yergey
Role
RoleTerm
(authority = RULIB)
author
Name
(type = personal)
NamePart
(type = family)
Able
NamePart
(type = given)
Kenneth W
DisplayForm
Kenneth W Able
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
chair
Name
(type = personal)
NamePart
(type = family)
Grothues
NamePart
(type = given)
Thomas M
DisplayForm
Thomas M Grothues
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Manderson
NamePart
(type = given)
John
DisplayForm
John Manderson
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
outside member
Name
(type = corporate)
NamePart
Rutgers University
Role
RoleTerm
(authority = RULIB)
degree grantor
Name
(type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm
(authority = RULIB)
school
TypeOfResource
Text
Genre
(authority = marcgt)
theses
OriginInfo
DateCreated
(qualifier = exact)
2012
DateOther
(qualifier = exact);
(type = degree)
2012-01
Place
PlaceTerm
(type = code)
xx
Language
LanguageTerm
(authority = ISO639-2b);
(type = code)
eng
Subject
(authority = RUETD)
Topic
Oceanography
RelatedItem
(type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
(type = RULIB)
ETD
Identifier
ETD_3773
PhysicalDescription
Form
(authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
ix, 69 p. : ill.
Note
(type = degree)
M.S.
Note
(type = bibliography)
Includes bibliographical references
Note
(type = statement of responsibility)
by Matthew E. Yergey
Abstract
(type = abstract)
Summer flounder, Paralichthys dentatus, is a commercially and recreationally important
flatfish species along the east coast of the United States. There are some clear and
important data gaps in our understanding of summer flounder and their ecology. In this
study we address two of those data gaps using acoustic telemetry; discard mortality in the
commercial trawl fishery and the potential for pelagic behavior. Discard mortality
studies to date rely on potentially biased on-deck evaluation of immediate mortality, and
evaluation of delayed mortality through holding captured fish to determine survival.
Telemetry of ultrasonically tagged fish provides a technique for evaluating fish bycatch
discard mortality, and especially latent mortality, under natural conditions in the sea. For
summer flounder along the eastern United States, an 80% discard mortality is assumed
but not verified. There is also a growing body of literature on flatfish species exhibiting
pelagic behaviors for various essential functions. In captivity, summer flounder use
“stroke and glide” behavior in the water column and they can feed actively there. To
determine the discard mortality, and explore their potential vertical movement, adult summer flounder were collected from a commercial trawl vessel and tagged and released
in a fixed hydrophone array on 15 September 2009 off Brigantine, New Jersey. In 2010,
an additional set of summer flounder were collected in the Great Bay – Mullica River
estuary, tagged, and released into an array nearby the 2009 site for further examination of
pelagic behaviors. Fish were re-detected both alive and dead within the array and during
mobile tracking. Pressure sensing tags recorded depth at a resolution of 0.68 meters.
Signal values indicating depths two meters or greater above an individual’s greatest depth
were considered to be pelagic in nature. Fish of poor initial health and dead individuals
were redetected after the storm in a concentrated area inshore of the release site and were
presumed dead. The final discard mortality estimate from the commercial trawl,
combining on-deck mortality (32.7%) and latent mortality (49.0%), was 81.7%; similar to
prior estimates. Latent mortality contributed at least as much to total discard mortality as
on-deck mortality. The individual depth profiles show clear patterns of active pelagic
behavior in 6 out of 14 live fish in 2009 and 6 out of 11 live fish in 2010. The mean percent of time above a 2-meter floor was 16.8% with a standard deviation of 24.4% in 2009, and 1.2%, with a standard deviation of 3.0% in 2010. This pelagic behavior occurred more frequently (86.0%) during nighttime, but there were no other obvious environmental correlates.
flatfish species along the east coast of the United States. There are some clear and
important data gaps in our understanding of summer flounder and their ecology. In this
study we address two of those data gaps using acoustic telemetry; discard mortality in the
commercial trawl fishery and the potential for pelagic behavior. Discard mortality
studies to date rely on potentially biased on-deck evaluation of immediate mortality, and
evaluation of delayed mortality through holding captured fish to determine survival.
Telemetry of ultrasonically tagged fish provides a technique for evaluating fish bycatch
discard mortality, and especially latent mortality, under natural conditions in the sea. For
summer flounder along the eastern United States, an 80% discard mortality is assumed
but not verified. There is also a growing body of literature on flatfish species exhibiting
pelagic behaviors for various essential functions. In captivity, summer flounder use
“stroke and glide” behavior in the water column and they can feed actively there. To
determine the discard mortality, and explore their potential vertical movement, adult summer flounder were collected from a commercial trawl vessel and tagged and released
in a fixed hydrophone array on 15 September 2009 off Brigantine, New Jersey. In 2010,
an additional set of summer flounder were collected in the Great Bay – Mullica River
estuary, tagged, and released into an array nearby the 2009 site for further examination of
pelagic behaviors. Fish were re-detected both alive and dead within the array and during
mobile tracking. Pressure sensing tags recorded depth at a resolution of 0.68 meters.
Signal values indicating depths two meters or greater above an individual’s greatest depth
were considered to be pelagic in nature. Fish of poor initial health and dead individuals
were redetected after the storm in a concentrated area inshore of the release site and were
presumed dead. The final discard mortality estimate from the commercial trawl,
combining on-deck mortality (32.7%) and latent mortality (49.0%), was 81.7%; similar to
prior estimates. Latent mortality contributed at least as much to total discard mortality as
on-deck mortality. The individual depth profiles show clear patterns of active pelagic
behavior in 6 out of 14 live fish in 2009 and 6 out of 11 live fish in 2010. The mean percent of time above a 2-meter floor was 16.8% with a standard deviation of 24.4% in 2009, and 1.2%, with a standard deviation of 3.0% in 2010. This pelagic behavior occurred more frequently (86.0%) during nighttime, but there were no other obvious environmental correlates.
Subject
(authority = ETD-LCSH)
Topic
Summer flounder--Ecology
Subject
(authority = ETD-LCSH)
Topic
Biotelemetry
Identifier
(type = hdl)
http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000064196
RelatedItem
(type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier
(type = local)
rucore19991600001
Location
PhysicalLocation
(authority = marcorg);
(displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier
(type = doi)
doi:10.7282/T3V40T79
Genre
(authority = ExL-Esploro)
ETD graduate
Back to the top
Rights
RightsDeclaration
(ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder
(type = personal)
Name
FamilyName
Yergey
GivenName
Matthew
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime
(encoding = w3cdtf);
(qualifier = exact);
(point = start)
2012-01-03 19:24:44
AssociatedEntity
Name
Matthew Yergey
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
Back to the top
Technical
FileSize
(UNIT = bytes)
3143680
Checksum
(METHOD = SHA1)
0c8a7654c84790dfd0133241614e3c2e77a179da
OperatingSystem
(VERSION = 5.1)
windows xp
ContentModel
ETD
MimeType
(TYPE = file)
application/pdf
Back to the top
Statistical Profile