2026-09-23T01:53:24Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/31969 2023-07-10 col_2142_14737 col_2142_5131 com_2142_690 com_2142_397 com_2142_5130

Suski, Cory D. Zuckerman, Zachary 2012-06-27T21:22:18Z 2014-06-28T10:00:22Z 2012-05 2012-06-27T21:22:18Z 2012-05 Parental care evolved as a means to maximize reproductive success at a cost to physiological and nutritional condition of the care-providing individual, and at a cost to future reproductive potential. Parental investment decisions are rooted in tradeoffs between these factors, and when the cost of care-provision is outweighed by potential future reproductive potential, a parent may forfeit current investment in an effort to maximize future reproductive success. Few studies have approached parental care decisions using offspring abandonment as a direct and ultimate fitness affect, and fewer yet have adopted a holistic approach to test how physiological and environmental conditions compare in influencing the decision by a parent to abandon their brood. I performed two separate, yet complementary, studies to test for the effects of several factors on brood abandonment decisions in largemouth bass (Micropterus salmoides); a model parental care-providing species. First, I tested whether mating success and simulated brood depredation affect the decision by paternal largemouth bass to abandon a brood. Second, I used a multivariate approach to jointly test for the influence of nutritional condition, hormonal stress, androgen concentration, and oxidative stress of brood-guarding paternal largemouth bass, and the threat of brood depredation (i.e., brood predator density), on brood abandonment decisions. Together, my results suggested a threshold for brood loss at which paternal largemouth bass were more likely to abandon what remains of a depredated brood, and that a high threat of depredation and reduced androgen concentration also influenced the decision by paternal bass to abandon care. My findings have implications for science-based management of a highly sought-after sportfish, as well as offer a novel approach for testing the inter-related effects of various abiotic and biotic factors on parental care decisions across taxa. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2012-04-27T12:38:31Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 3 Zuckerman_Zachary.pdf: 295345 bytes, checksum: 8c4fedd5e7626f7e8793c63e9b0114f2 (MD5) Zuckerman_Zachary.docx: 647678 bytes, checksum: 65e0ec74d52a13c8903daa38a1b041f8 (MD5) Zuckerman_Zachary.pdf: 295345 bytes, checksum: 0174c761d7c087092c2b73e040d40027 (MD5) Made available in DSpace on 2012-06-27T21:22:18Z (GMT). No. of bitstreams: 2 Zuckerman_Zachary.pdf: 296436 bytes, checksum: e3ed743fcc618253d8c2453605ce982b (MD5) license.txt: 4067 bytes, checksum: c0b6410dc1f45225a79e1c110108caf7 (MD5) Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by William Ingram (wingram2@illinois.edu) on 2012-06-27T21:24:42Z Item is restricted until 2014-06-27T21:24:27Z Item reinstated by Sarah Shreeves (sshreeve@illinois.edu) on 2014-06-28T10:00:22Z Item was in collections: Dissertations and Theses - Natural Resources and Environmental Sciences (ID: 671) Graduate Theses and Dissertations at Illinois (ID: 204) No. of bitstreams: 2 Zuckerman_Zachary.pdf: 296436 bytes, checksum: e3ed743fcc618253d8c2453605ce982b (MD5) license.txt: 4067 bytes, checksum: c0b6410dc1f45225a79e1c110108caf7 (MD5) Item released from any restrictions by Sarah Shreeves (sshreeve@illinois.edu) on 2014-06-28T10:00:22Z http://hdl.handle.net/2142/31969 en Copyright 2012 Zachary Zuckerman Parental care stress oxidative stress nutritional condition offspring abandonment recruitment reproductive success brood loss brood depredation Largemouth bass Micropterus salmoides fitness Life history trade-offs in a parental care-providing fish: the role of reproductive value, predation threat, and physiological condition on brood abandonment decisions by paternal largemouth bass text Natural Res & Env Sci 1875 Natural Res & Env Sciences 0190 University of Illinois at Urbana-Champaign Thesis M.S. MS:Nat Res & Envrn Sci -UIUC 10KS0190MS