caa a22 4500 606227628 CHVBK 20210128101159.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10641-015-0431-3 doi (NATIONALLICENCE)springer-10.1007/s10641-015-0431-3 Testing the thermal-niche oxygen-squeeze hypothesis for estuarine striped bass [Elektronische Daten] [Richard Kraus, David Secor, Rebecca Wingate] In many stratified coastal ecosystems, conceptual and bioenergetics models predict seasonal reduction in quality and quantity of fish habitat due to high temperatures and hypoxia. We tested these predictions using acoustic telemetry of 2 to 4kg striped bass (Morone saxatilis Walbaum) and high-resolution spatial water quality sampling in the Patuxent River, a sub-estuary of the Chesapeake Bay, during 2008 and 2009. Striped bass avoided hypoxic (dissolved oxygen ≤2mg·l−1) subpycnocline waters, but frequently occupied habitats with high temperatures (>25°C) in the summer months, as cooler habitats were typically not available. Using traditional concepts of the seasonal thermal-niche oxygen-squeeze, most of the Patuxent estuary would be considered unsuitable habitat for adult striped bass during summer. Application of a bioenergetics model revealed that habitats selected by striped bass during summer would support positive growth rates assuming fish could feed at one-half of maximum consumption. Occupancy of the estuary during summer by striped bass in this study was likely facilitated by sufficient prey and innate tolerance of high temperatures by sub-adult fish of the size range that we tagged. Our results help extend the thermal-niche oxygen-squeeze hypothesis to native populations of striped bass in semi-enclosed coastal systems. Tolerance of for supraoptimal temperatures in our study supports recent suggestions by others that the thermal-niche concept for striped bass should be revised to include warmer temperatures. Springer Science+Business Media Dordrecht (outside the USA), 2015 Thermal-niche oxygen-squeeze hypothesis nationallicence Striped bass habitat nationallicence Bioenergetics nationallicence Kraus Richard US Geological Survey, Great Lakes Science Center, Lake Erie Biological Station, 6100 Columbus Avenue, 44870, Sandusky, OH, USA aut Secor David Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, 146 Williams St., PO Box 38, 20688, Solomons, MD, USA aut Wingate Rebecca Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, 146 Williams St., PO Box 38, 20688, Solomons, MD, USA aut Environmental Biology of Fishes Springer Netherlands 98/10(2015-10-01), 2083-2092 0378-1909 98:10<2083 2015 98 10641 https://doi.org/10.1007/s10641-015-0431-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-015-0431-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kraus Richard US Geological Survey, Great Lakes Science Center, Lake Erie Biological Station, 6100 Columbus Avenue, 44870, Sandusky, OH, USA aut NATIONALLICENCE 700 1- Secor David Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, 146 Williams St., PO Box 38, 20688, Solomons, MD, USA aut NATIONALLICENCE 700 1- Wingate Rebecca Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, 146 Williams St., PO Box 38, 20688, Solomons, MD, USA aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/10(2015-10-01), 2083-2092 0378-1909 98:10<2083 2015 98 10641