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Evolutionary physiology topics 1. Patterns 2. Processes
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1. Patterns How and why of particular transitions How and why did endothermic vertebrates evolve from ectothermic ancestors? Evolutionary physiology topics
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Endothermy versus ectothermy scala naturae
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Endothermy versus ectothermy
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Advantages of endothermy: Stenothermy Aerobic metabolism Independent of environment
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Endothermy versus ectothermy Advantages of ectothermy: Low energetic requirements
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0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 mammals Passerine birds reptiles metabolism (Wg -1 day -1 ) 0.1g 10g 1kg100kg1000kg
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Endothermy versus ectothermy Advantages of ectothermy: Low energy requirements Low food habitats
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Endothermy versus ectothermy Advantages of ectothermy: Low energy requirements Low food habitats Fluctuating food habitats
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Mt Chappell Island Flinders Island Cape Barren Island
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Chappell Island tiger snake (Notechis ater serventyi) Short-tailed shearwater (Puffinus tenuirostris)
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Gila monster (Heloderma suspectum)
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Western banded gecko (Coleonyx variegatus)
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Endothermy versus ectothermy Advantages of ectothermy: Low energy requirements Low food habitats Fluctuating food habitats Small body dimensions
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body length surface/volume
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mammals: >20 g lizards:8% spp. < 1 g 80% spp. < 20 g salamanders: 20% spp. < 1 g 90% spp. < 20 g
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Dwarf chameleon Monte Iberia Eleuth Dwarf gecko
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Kitti’s hog-nosed bat Etruscan shrew W: 1.5-2.5 g FR: 4xW/day HR: 835 b/min RR: 661 p/min L: 29-33 mm
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Endothermy versus ectothermy Advantages of ectothermy: Low energy requirements Low food habitats Fluctuating food habitats Small body dimensions Elongate body forms
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height/diameter surface/volume diameter height
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weasel (Mustela nivalis) wood rat (Neotoma sp.) energy loss: x2
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Afrocaecilia taitanaDesmognathus ochrophaeus Bipes bipesAnguis fragilis
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Opheodrys aestivus
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Endothermy versus ectothermy Advantages of ectothermy: Low energy requirements Low food habitats Fluctuating food habitats Small body dimensions Elongate body forms Low water habitats
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Sauromalus obesus Scaphiopus couchii
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Endothermy versus ectothermy Advantages of ectothermy: Low energy requirements Low food habitats Fluctuating food habitats Small body dimensions Elongate body forms Low water habitats Low oxygen habitats
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Amblyrhynchus cristatus Iguana iguana
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Neoseps reynoldsi
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Scincus mitranus
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Dilong paradoxus Xu et al. 2004. Nature 431: 680-684.
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Dimetrodon (Pelycosauria) Moschops (Therapsida) Synapsida (mammal-like reptiles)
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Endothermy in Mammalia: 1.RM x5 2.T b > Ta, 28°C < T b < 40°C 3. T core < 1-2°C 4.M aero x5
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Thermoregulation first physiological version Synapsida evolve from small ectotherms increase in size (30-100 kg) become inertial homeotherms evolve insulation Tb constant, physiological benefits decrease in size increased metabolism improved insulation McNab 1978. Am. Nat. 112: 1-21.
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Thermoregulation first brain version Synapsida evolve from small ectotherms Tb constant, physiological benefits evolve larger, more complex brains Hulbert 1980.
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Thermoregulation first ecological version Synapsida evolve from small ectotherms Tb constant, physiological advantages evolve nocturnal habits Crompton et al. 1978. Nature 272: 333-336.
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Aerobic capacity first sustained ativity version Ruben 1995 Ann. Rev. Physiol. 57: 69-95. small change in basal metabolic rate minimal effect on thermoregulatory capacity large effect on maximal aerobic metabolic rate
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Aerobic capacity first parental care version Koteja 2000 Proc. R. Soc. Lond. 267: 479-484 small change in basal metabolic rate minieme verandering in thermoregulatie-capaciteit large effect on maximal aerobic metabolic rate necessary for locomotor costs related to parental care
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1. Patterns How and why of particular transitions Testing a-priori-hypotheses plastic responses are adaptive Evolutionary physiology topics
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Dicerandra linearifolia Winn A.A. 1999. J. Evol. Biol. 12: 306-313. leaf length leaf thickness density of stomata
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Winn A.A. 1999. J. Evol. Biol. 12: 306-313.
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Beneficial acclimation hypothesis
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Colder is better Hotter is better
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Beneficial acclimation hypothesis Deleterious acclimation hypothesis
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Beneficial acclimation hypothesis Escherichia coli Leroi et al. 1994.Proc. Natl. Acad. Sci. USA 91: 1917-1921.
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Beneficial acclimation hypothesis Escherichia coli 37°32° competition 41.5° > > Leroi et al. 1994.Proc. Natl. Acad. Sci. USA 91: 1917-1921. 32° 41.5° acclimation
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Beneficial acclimation hypothesis Bicyclus anynana Geister T.L. & Fischer 2007. Behav. Ecol. 18: 658-664.
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Beneficial acclimation hypothesis 20° 27° development larvae 20,20° 20,27° 27,27° 27,20° 20,20° 20,27° 27,27° 27,20° 20° 27° 20° acclimation
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Beneficial acclimation hypothesis Oribatida Deere J.A. & Chown S.L. 2006. Am. Nat. 168: 630-644.
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Marion Island, Prince Edward Islands
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Beneficial acclimation hypothesis Deere J.A. & Chown S.L. 2006. Am. Nat. 168: 630-644. 10° acclimation 7 days 5° 0°15° Halozetes marinus Halozetes marionensis Halozetes belgicae Halozetes fulvus Podacarus auberti Locomotor tests -5° up to 35°
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Beneficial acclimation hypothesis Deere J.A. & Chown S.L. 2006. Am. Nat. 168: 630-644. Halozetes marinus Halozetes marionensis Halozetes belgicae Halozetes fulvus Podacarus auberti deleterious acclimation
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Beneficial acclimation hypothesis Deere J.A. & Chown S.L. 2006. Am. Nat. 168: 630-644. 15°C 10°C 5°C 0°C
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Beneficial acclimation hypothesis Deere J.A. & Chown S.L. 2006. Am. Nat. 168: 630-644. Halozetes marinus Halozetes marionensis Halozetes belgicae Halozetes fulvus Podacarus auberti deleterious acclimation beneficial acclimation
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Beneficial acclimation hypothesis Deere J.A. & Chown S.L. 2006. Am. Nat. 168: 630-644. 15°C 10°C 5°C 0°C
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Beneficial acclimation hypothesis Deere J.A. & Chown S.L. 2006. Am. Nat. 168: 630-644. Halozetes marinus Halozetes marionensis Halozetes belgicae Halozetes fulvus Podacarus auberti colder is better deleterious acclimation beneficial acclimation
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Beneficial acclimation hypothesis Deere J.A. & Chown S.L. 2006. Am. Nat. 168: 630-644. 15°C 10°C 5°C 0°C
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Beneficial acclimation hypothesis Deere J.A. & Chown S.L. 2006. Am. Nat. 168: 630-644. Halozetes marinus Halozetes marionensis Halozetes belgicae Halozetes fulvus Podacarus aubertigeen plasticiteit colder is better deleterious acclimation beneficial acclimation
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Beneficial acclimation hypothesis Deere J.A. & Chown S.L. 2006. Am. Nat. 168: 630-644. 15°C 10°C 5°C 0°C
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1. Patterns How and why of particular transitions Testing a-priori-hypotheses plastic responses are adaptive phenotypic plasticity ~ environmental variability Evolutionary physiology topics
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Rana temporaria Lind & Johansson 2006. J. Evol. Biol. 20: 1288-1297
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14 small islands 10 clutches < 20-50 eggs depth pools variability drying / island lab: 4 tadpoles / container 2 regimes: Constant & Drying developmental time ~ regime (D<C) developmental time ~ island phenotypic plasticity ~ variability island Lind & Johansson 2006. J. Evol. Biol. 20: 1288-1297
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constant drying developmental time 28 17 island 1 (homo) plasticity=11 28 10 island 2 (hetero) plasticity=18 devolopmental time ~ regime (D<C) developmental time ~ island phenotypic plasticity ~ variability island
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Lind & Johansson 2006. J. Evol. Biol. 20: 1288-1297
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1. Patterns How and why of particular transitions Testing a-priori-hypotheses plastic responses are adaptive phenotypic plasticity ~ environmental variability a jack-of-all-trades is a master of none Evolutionary physiology topics
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sprint speed ‘specialist’ ‘generalist’ lichaamstemperatuur sprint speed
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Laudakia stellio lichaamstemperatuur rank Huey R.B. & Hertz P.E. 1984. Evolution 38:441-444.
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Amoeba lichaamstemperatuur rank
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Escherichia coli Hughes et al. 2007. Physiol. Biochem. Zool. 80: 406-421.
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Escherichia coli Hughes et al. 2007. Physiol. Biochem. Zool. 80: 406-421. 5.3 6.3 7.0 7.8 2000 generations non-active
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Escherichia coli Hughes et al. 2007. Physiol. Biochem. Zool. 80: 406-421. 5.3 6.3 7.0 7.8 2000 generations non-active C > P in constant and fluctuating environments
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Escherichia coli Hughes et al. 2007. Physiol. Biochem. Zool. 80: 406-421. 5.3 6.3 7.0 7.8 2000 generations non-active R > P in some fluctuating and constant environments
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Escherichia coli Hughes et al. 2007. Physiol. Biochem. Zool. 80: 406-421. 5.3 6.3 7.0 7.8 2000 generations non-active B > P in fluctuating environments, but not in 7.8
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Escherichia coli Hughes et al. 2007. Physiol. Biochem. Zool. 80: 406-421. 5.3 6.3 7.0 7.8 2000 generations non-active A > P in constant, not in fluctuating environments
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Escherichia coli Hughes et al. 2007. Physiol. Biochem. Zool. 80: 406-421. (1) adaptation to cycling pH, randomly changing pH and constante pH follows different patterns (2) in variable environments generalists evolve, in constant environments specialists evolve; (3) in variable environments the ‘cycling’ lines have a higher fitness than the ‘random changes’ lines; (4) an acclimation benefit (BAH) was not always detected.
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Goodman et al. 2007. Evol. Ecol. Res. 9: 527-546. 18 Lygosominae sprinting, jumping, clinging, climbing
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1. Patterns How and why of particular transitions Testing a-priori-hypotheses plastic responses are adaptive phenotypic plasticity ~ environmental variability a jack-of-all-traits is a master of none symmorphosis: design satisfies need Evolutionary physiology topics
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Evolutionary physiology topics
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Evolutionary physiology topics king pin
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one half rule
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V0 2 max mitochondria in muscle cells capillary design (volume, surface) hematocrite heart stroke volume surface pulmonary vesicles diffusion capacity membrane Weibel et al. 1991. Proc.Natl. Acad. Sci. USA 88: 10357-10361
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1. Patterns 2. Processes natural selection Evolutionary physiology topics
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performance variation fitness variation design variation genetic variation performance gradient fitness gradient quantitative genetics physiology morphology biochemistry kinematics biomechanics ecology behavioral biology
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LeGalliard et al. 2004. Nature 432: 502-505. Zootoca vivipara juvenile survival initial endurance limited food supply abundant food supply
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1. Patterns 2. Processes natural selection sexual selection intrasexual selection (male-male combat) intersexual selection (female choice) Evolutionary physiology topics
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deCarvalho et al. 2004. Anim. Behav. 68: 473-482. Neriene litigiosa
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deCarvalho et al. 2004. Anim. Behav. 68: 473-482. Neriene litigiosa Time (min) Joint male energy use (E W) 1200 800 600 400 200 0 012345678 Phase 1 Phase 2 Phase 3 Locomotion X 3.5 X 7.4 X 11.5
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Necora puberUca lactea Thorpe et al. 1995. Anim. Behav. 50: 1657-1666 Matsuma & Murai 1995. Anim. Behav. 69: 569-577 anaerobic respiration
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Agkistrodon contortix Schuett & Grober 2000 Physiol & Behav 71: 335-341.
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Agkistrodon contortix Schuett & Grober 2000 Physiol & Behav 71: 335-341.
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Anolis sagrei
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Evolutionary physiology implications
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Evolutionary physiology implications
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Evolutionary physiology implications
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Evolutionary physiology implications http://www.sfecologie.org/blog/2011/09/30/evolrescueonline-topic-1/
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