We examined how different exploratory behavioral types of largemouth bass responded to differing prey communities by determining effects on growth, survival and diet in experimental ponds. We found evidence that non-explorer largemouth bass target young-of-year bluegill early on in life, but bluegill were not an important diet item by late summer. The presence of young-of-year bluegill as prey does appear to affect the foraging strategy of the two exploring types differently. In the absence of small bluegill, both behavioral types feed primarily on benthic invertebrates and zooplankton. When small bluegill were present, we saw a shift away from zooplankton as prey for largemouth bass. However, that shift was toward more benthic invertebrates for non-exploring behavioral types and toward terrestrial insects for exploring behavioral types. Thus, it appears that prey community composition can have important effects on the way in which different behavioral types interact with their environment.
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http://dx.doi.org/10.1007/s00442-016-3681-7 | DOI Listing |
Semin Oncol Nurs
January 2025
Nursing Department, Cyprus University of Technology, Limassol, Cyprus.
Objectives: Cancer-related cachexia affects approximately 50% to 80% of cancer patients and contributes significantly to cancer-related mortality, accounting for 20% of deaths. This multifactorial syndrome is characterized by systemic inflammation, anorexia, and elevated energy expenditure, leading to severe weight loss and muscle wasting. Understanding the underlying mechanisms is critical for developing effective interventions.
View Article and Find Full Text PDFNeurobiol Dis
January 2025
The University of Texas Southwestern Medical Center, Department of Neurology, Dallas, TX, United States of America; The University of Texas Southwestern Medical Center, Department of Psychiatry, Dallas, TX, United States of America; The University of Texas Southwestern Medical Center, Department of Pediatrics, Dallas, TX, United States of America; The University of Texas Southwestern Medical Center, Department of Neuroscience, Dallas, TX, United States of America. Electronic address:
Loss of function in the subunits of the GTPase-activating protein (GAP) activity toward Rags-1 (GATOR1) complex, an amino-acid sensitive negative regulator of the mechanistic target of rapamycin complex 1 (mTORC1), is implicated in both genetic familial epilepsies and NDDs (Baldassari et al., 2018). Previous studies have found seizure phenotypes and increased activity resulting from conditional deletion of GATOR1 function from forebrain excitatory neurons (Yuskaitis et al.
View Article and Find Full Text PDFEnviron Pollut
January 2025
Centre for Environmental and Climate Science, Lund University, Sweden.
Urban environments are exposed to a substantial range of anthropic pressures, including chemical exposure. While trace metals and legacy pollutants have been well documented, the extent of wildlife exposure to emerging contaminants has received little attention, in terrestrial mammals. Concentrations of trace elements (Ag, Al, As, Cd, Co, Cr, Cu, Fe, Mn, Pb and Zn) and 48 organic pollutants (Polychlorinated Biphenyls: PCBs, Organochlorine Pesticides: OCPs, Polycyclic Aromatic Hydrocarbons: PAHs, phthalates and pyrethroid pesticides) were measured in tissues of European hedgehogs (Erinaceus europaeus) in southern Sweden.
View Article and Find Full Text PDFJ Environ Manage
January 2025
College of Forestry, Northwest A&F University, Yangling, 712100, Shaanxi, China. Electronic address:
Appropriate vegetation restoration measures are beneficial to ecosystem restoration and nutrient retention in ecologically fragile areas. However, the high water consumption of planted forests and the increasing frequency of drought events may reshape or complicate this ecological process. The effects of forest types and drought stress on nutrient limitation remain unclear.
View Article and Find Full Text PDFJ Environ Manage
January 2025
School of Sustainable Engineering and the Built Environment, Arizona State University, United States. Electronic address:
In the management of reservoirs, different forms of infrastructure (such as dams, hydropower units, information) are functionally interdependent and often managed by different types of actors to form a social-ecological-technological system. Such interdependence also occurs because institutions (understood as rules that guide and constrain actor behavior) exist to indicate how infrastructures should be managed. We apply institutional analysis and social network analysis to identify how functionally interdependent infrastructures and actors are connected by formal rules created to manage reservoir operations in Argentina (Ameghino Dam, Chubut) and the United States (Coyote Valley Dam, California).
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