1. Natural Selection, Evolution & Implications for the Conservation of Wildlife

2. Evolution It’s the process that drives- the diversity of reproductive strategies we’ve studied… the ongoing relationships between predator and prey… the patterns of wildlife distributions around the globe… responses to disturbances… guides the migrants… as well as the demise of all the species that have become extinct throughout all of time…

3. Taxonomy: Birds Class Aves (birds) Order Anseriformes (ducks, geese, swans, and relatives)Anseriformes Order Galliformes (chicken-like birds)Galliformes Order Caprimulgiformes (nightbirds)Caprimulgiformes Order Apodiformes (hummingbirds and swifts)Apodiformes Order Balaenicipitiformes (shoebill or whale-headed stork)Balaenicipitiformes Order Charadriiformes (shorebirds and relatives)Charadriiformes Order Ciconiiformes (storks and relatives)Ciconiiformes Order Coliiformes (mousebirds)Coliiformes Order Columbiformes (doves and pigeons)Columbiformes Order Coraciiformes (kingfishers and relatives)Coraciiformes Order Cuculiformes (cuckoos and relatives)Cuculiformes Order Falconiformes (diurnal birds of prey)Falconiformes Order GalbuliformesGalbuliformes Order Gaviiformes (loons)Gaviiformes Order Gruiformes (coots, cranes, and rails)Gruiformes Order Mesitornithiformes (mesites)Mesitornithiformes Order Musophagiformes (turacos)Musophagiformes Order Opisthocomiformes (hoatzin)Opisthocomiformes Order Passeriformes (perching birds)Passeriformes Order Pelecaniformes (pelicans, tropicbirds, cormorants, and relatives)Pelecaniformes Order Phoenicopteriformes (flamingos)Phoenicopteriformes Order Piciformes (woodpeckers and relatives)Piciformes Order Podicipediformes (grebes)Podicipediformes Order Procellariiformes (tube-nosed seabirds)Procellariiformes Order Psittaciformes (parrots)Psittaciformes Order Sphenisciformes (penguins)Sphenisciformes Order Strigiformes (owls)Strigiformes Order Trogoniformes (trogons)Trogoniformes Order Turniciformes (buttonquail)Turniciformes Order Struthioniformes (cassowaries, emus, kiwis, ostriches, and rheas)Struthioniformes Order Tinamiformes (tinamous)Tinamiformes

5. And even for humans, it drives …and who will not who will survive…

6. And may just influence what happens next on this graph…

7. Nothing in biology makes sense except in the light of evolution” -Theodosius Dobzhansky Evolution through natural selection is the foundation of modern ecology, biology and medicine.

8. Theory or Fact? In everyday vernacular, a theory is “a guess”. As a scientific term, a theory is “a statement of what are held to be the general laws, principles, or causes of something known or observed” (OED) A scientific theory is testable and can make verifiable predictions In fact, it has been noted that we know more about the mechanisms of evolution than we do gravity, the nature of light, sleep, the weather, and something even more nebulous and stormy… love.

9. Throughout much of human history, the dominant perspective (and still is in some of the less educated parts of the world… and country), was that everything was divinely created in its present form, and that this Creator also orchestrated their interactions not unlike a master puppeteer.

11. Theologist: “ What have you learned about the mind of God in the course of your studies of biology?” J.B.S.Haldane: “ Madame, only that he had an inordinate fondness for beetles.”

12. J.B.S. Haldane

14. Charles Darwin (1809-1882) Published one of the most influential books ever written- On the Origin of Species- in 1859 2009 marks the 200 th anniversary of his birth and 150 th anniversary of the publication of OtOoS

17. The Galapagos Islands

20. What is Natural Selection? “principle by which each slight variation [of a trait], if useful, is preserved” – Darwin

21. Natural Selection Individuals within populations are variable for nearly all traits Individuals pass on their genes to offspring More offspring are produced than can survive Individuals that survive and go on to reproduce (the most) are those with the varieties (alleles) that best adapt them to their environment Outcome: alleles associated with higher fitness increase in frequency from one generation to the next

22. Artificial Selection

24. Natural Selection is also a part of population regulation The reproductive potential of populations is great, but populations tend to remain constant in size, because populations suffer high mortality. Individuals vary within populations, leading to differential survival of individuals. Traits of individuals are inherited by their offspring. The composition of the population changes by the elimination of unfit individuals Rabbits should cover the earth, but they don’t, because many are caught by predators. Some rabbits run faster than others, and escape from predators and so do their young. Populations of rabbits, as a whole, tend to run faster than their predecessors. From Ricklef’s “The Economy of Nature” Second Edition

25. Important Points Weak forces operating over long periods of time create large and dramatic change. Natural selection is the non-random survival of random variants Natural selection- by itself- is not evolution. It is the mechanism that can lead to evolution. Natural selection takes place within a generation, but evolution takes place across generations.

26. Gregor Mendel Contemporary of Darwin “father of genetics” -1866 Heritable traits & dominance Watson & Crick Mechanism of inheritance DNA 1953

28. Peter & Rosemary Grant

29. Daphne Major

30. Started research project on Darwin finches in 1973.

31. Geospiza fortis

34. Graph showing the distribution of beak depths for medium ground finches in Year 1 34

37. la Niña = Drought el Niño = Rains

38. Drought (la nina) Wet (el nino)

39. In 1975, the rainy season came and went with nary a drop of rain (el Niño) Following the drought of 1977, 85% of the medium ground finch population died.

40. Year 3 Data 40

41. Caltrop seeds (Tribulus)

43. This demonstrates natural selection, but the story is not quite over… The year of the drought, no young were produced After the drought, the 15% that survived represented birds with larger bills. These individuals did breed the following year. What do think their offspring looked like? (Small beaks? Medium beaks? Big beaks?) This is evolution.

44. Other evidence for evolution Common structures (homologous) Analogous structures (convergent evolution) DNA Research Fossil Record Embryonic development Vestigial Organs & Structures Imperfections in Structure Drug-Resistant Bacteria

45. Homologous Structures ~ common ancestor ~

46. Homologous Structures

47. Convergent Evolution ~ Physical adaptations to similar ecological conditions~

48. Convergent Evolution

49. DNA - species that appear to be more distantly related from their positions in the fossil record are found to have correspondingly greater differences in their DNA than species that appear more closely related in the fossil record.

50. Fossils

54. Conservation Connection “It is not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change.” –Charles Darwin but the one most responsive to change.” –Charles Darwin

56. Punta Alta Punta Alta “a perfect catacomb for monsters of extinct races”

57. We are changing the world faster than species are able to adapt to these changes.

63. Humans as an Evolutionary Force Human-induced evolution caused by unnatural selection through harvest of wild animals (Allendorf, F.W. and J. J. Hard. 2009. PNAS. Vol. 106) The nature of fisheries- and farming-induced evolution (Hutchings, J.A. and D.J. Fraser. 2007.Molecular Ecology. Vol.17) Rapid human-induced evolution of insect– host associations (Singer, M., C.D. Thomas and C. Parmesan. 1993. Nature. Vol. 366) Humans as the World's Greatest Evolutionary Force (Palumbi, S.R. 2001. Science. Vol. 293)

64. Evolution Books ~The Old Classics~

65. Evolution Books ~The New Classics~

66. “It is a century now since Darwin gave us the first glimpse of the origin of species. We know now what was unknown to all the preceding caravan of generations: that men are only fellow-voyagers with other creatures in the odyssey of evolution. This new knowledge should have given us, by this time, a sense of kinship with fellow-creatures; a wish to live and let live; a sense of wonder over the magnitude and duration of the biotic enterprise.” ~Aldo Leopold