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DTSTART:20191103T020000
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UID:calendar.4678.field_date_time.0@www.umces.edu
DTSTAMP:20260416T193901Z
CREATED:20190822T134931Z
DESCRIPTION:November 13\, 2019 3:30pm    \n    \n      \n\n\n    \n\n      
         \nChesapeake Biological Laboratory\n      \n\n\n\n\n  \n\n    \n\n
               \n\n\n              Title: Plasticity and adaptation: migrat
 ory coastal fishes under climate change\n          \n  \n\n    \n\n       
        \n\n\nAbstract: Plasticity refers to the variety of conditions that
  a species can successfully occupy in contemporary time (acclimation)\, wh
 ile adaptation refers to evolution through natural selection under changin
 g environmental conditions. Both are important as climate change alters th
 e physical and biotic environments of key species. Migratory coastal fishe
 s are strongly linked to coastal environments for key life history functio
 ns such as spawning and nursery. Coastal habitats may include estuaries\, 
 rivers\, reefs\, sea grass fields\, kelp forests\, soft sediments\, etc. A
 s coastal habitats change\, migratory fishes can either select new locatio
 ns (e.g.\, a more poleward estuary for spawning and nursery) or adapt to d
 ifferent conditions in their present location. Recent findings for cobia (
 Rachycentron canadum) migration include both 'staying' and 'straying'\, su
 ggesting migratory plasticity that may allow founder events to establish s
 pawning in new estuaries. The cobia also has multiple spawning strategies 
 (estuarine and offshore)\, and a diverse diet with an opportunistic predat
 ion style (demersal\, pelagic\, piscivore\, invertivore)\, sources of ecol
 ogical plasticity that may be beneficial as food webs are reorganized unde
 r climate change. Remaining in place can occur only if acclimation and ada
 ptation can adjust physiological limits to the new conditions. Future cond
 itions in the Chesapeake Bay are likely to be more hypoxic and warmer\, pr
 esenting physiological challenges for gill-ventilated organisms. Experimen
 ts to determine the breadth of environmental limits after short term accli
 mation suggest that cobia are eurythermal and hypoxia-tolerant. This physi
 ological plasticity may enable cobia to utilize the Bay even as it becomes
  more hypoxic. Adaptation potential is influenced by generation time\, mut
 ation rate\, and allelic diversity. The cobia has a short generation time 
 and recent studies indicate high allelic diversity\, suggesting that the s
 pecies may have high adaptation potential. The outlook for other key speci
 es may be anticipated by investigating their potential for acclimation and
  adaptation in a similar manner.
DTSTART;TZID=America/New_York:20191113T153000
DTEND;TZID=America/New_York:20191113T153000
LAST-MODIFIED:20191111T143104Z
SUMMARY:CBL Seminar: Dr. Kevin C. Weng (VIMS)
URL;TYPE=URI:https://www.umces.edu/events/cbl-seminar-dr-kevin-c-weng-vims
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