scholarly journals Dynamics of white perch Morone americana population contingents in the Patuxent River estuary, Maryland, USA

2004 ◽  
Vol 279 ◽  
pp. 247-259 ◽  
Author(s):  
RT Kraus ◽  
DH Secor
Keyword(s):  
White Perch ◽  
River Estuary ◽  
Morone Americana ◽  
Patuxent River Estuary ◽  
Patuxent River

Life History Aspects of the Hogchoker, Trinectes maculatus, in the Patuxent River Estuary, Maryland

1969 ◽  
Vol 10 (2) ◽  
pp. 104 ◽  
Author(s):  
W. L. Dovel ◽  
J. A. Mihursky ◽  
A. J. McErlean
Keyword(s):  
Life History ◽  
River Estuary ◽  
Patuxent River Estuary ◽  
Patuxent River

Seston Distribution in the Patuxent River Estuary

1976 ◽  
Vol 17 (1) ◽  
pp. 56 ◽  
Author(s):  
Carolyn W. Keefe ◽  
David A. Flemer ◽  
D. Heyward Hamilton
Keyword(s):  
River Estuary ◽  
Patuxent River Estuary ◽  
Patuxent River

Bioenergetic trajectories underlying partial migration in Patuxent River (Chesapeake Bay) white perch (Morone americana)

2009 ◽  
Vol 66 (4) ◽  
pp. 602-612 ◽  
Author(s):  
Lisa A. Kerr ◽  
David H. Secor
Keyword(s):  
Growth Rates ◽  
White Perch ◽  
Growth Conditions ◽  
Partial Migration ◽  
Related Phenomenon ◽  
Morone Americana ◽  
Scope For Growth ◽  
Patuxent River ◽  
Consumption Rates ◽  
First Year Of Life

Partial migration, the coexistence of resident and migratory individuals within the same population, may be common in fish populations. A proposed mechanism underlying partial migration is differing dispersive responses to early growth conditions, but few studies have explicitly tested this. During their first year of life, white perch ( Morone americana ) in the Patuxent River (Maryland, USA) exhibit either residency in freshwater natal habitats (resident contingent) or disperse down-estuary into brackish habitats (dispersive contingent). We tested whether white perch juveniles exhibited differing growth and metabolic trajectories based on contingent membership or in response to salinity. A randomized factorial experiment with two contingent types and two salinity treatments (1 and 8) was conducted over a 30-day period. The experiments supported a contingent effect, with the dispersive contingent exhibiting higher consumption rates and a higher scope for growth. In addition, we identified a weak salinity effect with evidence of increased consumption and routine metabolism in mesohaline conditions. Juvenile growth rates calculated from individuals in the field supported laboratory results, with dispersive contingent members exhibiting higher growth rates. We conclude that contingent membership and the related phenomenon of partial migration in this population is associated with varying energetic tactics that significantly influence the scope for growth.

An integrated modelling system for management of the Patuxent River estuary and basin, Maryland, USA

2006 ◽  
Vol 27 (17) ◽  
pp. 3705-3726 ◽  
Author(s):  
M. R. Williams ◽  
T. R. Fisher ◽  
W. R. Boynton ◽  
C. F. Cerco ◽  
M. W. Kemp ◽  
...  
Keyword(s):  
River Estuary ◽  
Integrated Modelling ◽  
Patuxent River Estuary ◽  
Patuxent River ◽  
Modelling System

scholarly journals Long-Term Changes in Water Quality and Productivity in the Patuxent River Estuary: 1985 to 2003

2008 ◽  
Vol 31 (6) ◽  
pp. 1021-1037 ◽  
Author(s):  
Jeremy M. Testa ◽  
W. Michael Kemp ◽  
Walter R. Boynton ◽  
James D. Hagy
Keyword(s):  
Water Quality ◽  
River Estuary ◽  
Patuxent River Estuary ◽  
Patuxent River ◽  
Long Term Changes
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