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Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily
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Biology= biological science: concerned with the study of life and living organisms at various scales, including their structure, function, growth, evolution, distribution, taxonomy, etc.Classical classificationzoology + botany →The classification in the faculty of science, Hokkaido University, applied this criteria in 1980 except no ecology lab. ⇓ on each taxon plant (植物)taxonomy•microbe •fungus •algae •lichen •moss •fern •gymnospermae •angiospermae ecologymorphology physiology animal (動物)taxonomy•insect •fish •amphibian •reptile •bird •mammal •human (人類) physiologymorphology ecology Proximate and ultimate factors (至近要因と究極要因)Proximate factor: the general cause of a particular change, such as variations in day length, which affects the behaviour or organisms in various waysUltimate factors: environmental factors which in the course of evolution have led, through natural selection, to the relevant restriction (Immelmann 1972) Five kingdoms (5界説)1969 Whittaker RH proposedThree domainsFig. Evolutionary phylogeny. Super-thermotrophic bacteria (超好熱菌) = Aquifex, Pyrodicticum, Thermoproteus and T. celer One attempt, not supported wellDomain 1 Aphanobionta (無形生物)non-cellular life, reproducing only in the cells of the other species1000-5000(50万) species Kingdom 1 Virus (ウイルス)Division 1 Virus (ウイルス)Domain 2 Monera (モネラ)= moneranbacteria, no nuclear membranes between nuclei and between ribosomes, no endothelial reticula and no cellular skeletons 5,000- (40,000-3,000,000) species Kingdom 2 Eubacteria (真性細菌)membrane lipids consisting of acylglycerol and peptidoglycanSubkingdom 1 Gram-negative bacteria (グラム陰性細菌)developing plasma membranes and outer membranesDivision 2 Thermotogobacteria (始祖好熱細菌)Division 3 Chloroflexobacteria (緑色糸状細菌)Division 4 Deinococcus-ThermusDivision 5 Chlorobiobacteria (緑色硫黄細菌)green sulfur bacteriaDivision 6 Proteobacteria (プロテオバクテリア)Class Rhodobacteria (紅色細菌) |
Class Myxobacteria (粘液細菌) Class Rickettsiomycota (リケッチア) chemoautotrophic bacterias, bacteroides-fravobacterium Division 7 Spirochaetobacteria (スピロヘータ) |
Paracelsus (1493-1541, Switzerland) autonym = Theophrastus von Hohenheim alchemy → life thought → medicine human body = mercury (azoth) + sulfur + salt → we get disease when the balance of these three elements is collapsed (derived from evidence on the effectiveness of chemical medicine ) Vesalius Andreas (1514-1564) 1514 De humani corporis fabrica (人体構造図): sharp observation
pointed out the mistakes on sheart drawn by Galenus (129?-200?) Professor of Università degli Studi di Padova (UNIPD, Italy) laying the foundation of medical research of which central approach is anatomy Harvey W (1578-1657, England)overseas study in UNIPD supervised by Fabricius (1537-1619, Italy) who discovered venous valve Galileo was a professor of UNIPD when Harvecy was in the university → influenced something by Galileo (because the similarity of spirit of experimentation and method) 1628 On the motion of the heart and blood In animals
discovered the principles of blood circulation (the effect of overseas education) 1686: descriptions of morphological variations → the concept of species (natural history) Maupertuis, Pierre Louis de (1698-1759, French) 1745 Vénus physique (name withheld) 1754 Systeme de la Nature considering the origin of human and animasl Kaelreuter JG (1761-1766) tobacco: tring to artificially create the first hybridizer (regoginzing in the present that hybridization experiment is important for breeing and genetics) → the Age of Hybridizer Camerarius RJ (1655-1721) "Observations sur" anther = male-like vs ovary = female-like → sex present in plants, demonstrated by cross-fertilization follwed by many researchers Bufforn (1707-1788) Taxonomy + Morphology + Ecological technique, habit and competition Lamarck JB (1744-1829): proposed use-and-disuse theory (用不用説) Haeckel, Ernst Heinrich (ヘッケル, 1834.2.16-1919.8.9 Germany, Zoology 1866: Generelle morphologie The study of the relation of organisms or groups of organisms to their environment, or the science of the interrelations between living organisms and their environment (Haeckel 1866) |
Biology
Morphology (= form)
Anatomy: study of structure, study of basic type Physiology (= function)
Working physiology: plant physiology, animal physiology The nucleus = Natural history → Taxonomy - Descriptive Schimper KF (1803-1867, Gr): Botanist (Schimper-Brawn's law)Warming, Johannes Eugenius Bülow (1841.11.3 - 1924.4.2, Denmark) Plant ecology Cowels 1899, Tansley 1911: succession determined by the environments, poly-climax Clements (1904, 14), Shelford (1911): biome, mono-climax (単極相) Shoröter: 1911 autoecology and synecology Turesson G (1892-1970, Sweden) 1922, 25 "The plant species in relation to habitat and imate. Contribution to the knowledge of genecological units" - genecology (遺伝生態学) (Hereditas vols 3, 6) confirming ecological race (= ecotype), using the transplant experiments of Draba verna, Atriplex subcordata, Epilobium pyrricholophum, etc.
ecotype is a kind of genotype
ecophene < ecotype < ecospeceis < coenospecies GeneticsBefore Mendel: the fact of heredity was known
→ comprehensive obsrvations and descriptions 1866 Versuche über Pflanzen-Hybriden (Experiments in plant hybridization) 1900 rediscovery of Mendelian rules (de Vries, Correns & Tschermak)Sutton & Boveri 1902-03 proposed chromosome theory of inheritance chromosomal distribution in sex cells is consistent with Mendelian inheritance Bauer E1924 confirming the mutation stated by de Vries is chromosomal mutation, using figwort/antirrhinum/maj.html Vavilov, Nikolai Ivanovich (1887-1943, Russia): classical study on breedingOryza = 23 species. Oryza sativa = A genome type |
Ancient GreekEmpedokles (Eng. Empedocles, aged ≈ 60, BC c. 490-BC c. 430)materialistic interpretation = the facts (of life) are permanent → the everlastingness is formed accidentally by binding the four elements (arche): water, earth, air and fire origin of life = spontaneous generation (= abiogenesis)observation of the volcano Etna → the inside of earth consists of melted substances Spontaneous generation theory (SGT, 自然発生説) Hippocrates (BC 460-377)♂: seminal fluid + ♀: seminal fluid → coagulation Platon (BC427-BC347) Plato's tripartite theory of soul psyche = logical (logistykon) + spirited (thymoeides) + appetitive (epithymetikon) heredity - eugenicsAristoteles (BC384-322) Ovoviviparous: ♂: seminal fluid + ♀: menstrual blood → coagulation Veiw of birth or genesis (発生観)17 C:Redi, Francesco (1626-1698) "Experiments on the generation of insects" Fly needs egg for the generation, demonstrated by an experiment Malpighi (1628-1694)Van Leewenhock (1632-1723): animaliculist 1677 sperms discovered by a self-made microscope + microbes discovered in milk and wort |
Theesen (1637-1686): confirmed yolk in shark eggs De Graaf (1641-1673) Leibniz, Gottfried Wilhelm (1646-1716): animaliculist the discovery of Leewenhock is explained by SGT 18 C:Needham, John Turberville (1713-1781): supported SGT Spallanzani, Lazzaro (1729-1799, Italy): recjected SGT fertilization is inactivated by the filteration of sperms → sperm is related to fertilization Bonne C (1720-1793, Switzerland, natural history)performation theory (入れ子説), ovium – homunculus Pasteur, Louis (1822-1895): rejected SGT completely ☛ origin of life19c↑ (scientific = demonstrative) Wilhelm Roux (1850-1924, Germany) whole embryo – epigenesis ↔ partial embryo – preformation causal analysis = experimental embryology____________________↓ electron microscopy → chemical embryology ____________________↑ developmental physiology ____________________molecular biology 1859 Darwin CR: published Origin of species 1883 Haldane RB & JS (1860-1936): what we call life = active maintenance of normal and specific structure |
1809 Lamarck: in Philosophie Zoologique
Life emerged from inorganic matter by spontaneous generation 1855 Darwin: letter to friend, Hooker, Joseph Dalton, Sir (1817-1911)Life emerged when complex substances were produced from organic matter originating inorganic matter 1924 Oparin, Alexander Ivanovich (1894-1980) (オパーリン), beiochempublished "The origin of life" (in Russian)
chemical evolution (化学進化) Miller, Stanley Lloyd (1930-2007) 1952 success in the synthesis of amino acids by atmospheric discharge 1953 [NH3, CH4, H2, H2O] → spark → [CO, CO2, N2, Amino acids]
CH4 + NH3 → HCN + 3H2 |
1950' Fox SW & Harada (原田馨)
protenoid: the synthesis of 14 amino acids under high pressure 1965 Ponnamperuma et al.synthesis of nucleotide from adenines, riboses and ethyl-metaphosphoric acids by UV irradiation 1977 Egami (江上) et al.marigranule: artificial sea water + amino acids → coccus-like spherule RNA world (RNAワールド) (hypothesis)self-replicating RNA molecules → DNA and proteins 1962 Rich, Alexander (1924-2015): the concept of the RNA world1981 Cech, Thomas Robert (1947-), et al.: ribozyme catalytic reaction of RNA extracted from Tetrahymena 1986 Gilbert, Walter (1932-): proposed the term RNA world☛ viroid = living fossil of RNA organisms? Fossil records (初期生物型) |
= biological science
Longevity (寿命)typical length of life(v. adapt, a. adaptive) Adaptation (適応)The adaptation of a subpopulation to a particular environmental patch can be maintained in two ways. First, there can be strong opposing selection pressures in different patches. Second, gene flow may be restricted. (Pickett 1976)Eugenics (優生学)1883 Galton, Francis (1822-1911, Eng.): used eugenics (Ancient Greek)
eu (good, well) + gens (born, come into being and growing/grown) |
1900-1915 USA: Genetics Society of America - promotion of eugenics (concerns about declining genetic quality of Americans)
1903 American Breeders Association (ABA) renamed International Federation of Eugenics Organizations 1913 Mental Deficiency Act1922 American Eugenics Society (-2019) 1924 Immigration Act (immigration restriction) the standard is made based on eugenics 1931 Sterilization Laws established in the 30 states of USA Aim: to improve the genetic quality of a (human) population
by excluding people and groups judged to be inferior, and vice versa |
Prior to DarwinLinne 1751 Philosophia Botanicanumber of (created) species = constant Bonnet, Charles (1720-1793)proposed a term "evolutionism" → evolution Macleay or McLeay, William Sharp (1792-1865), entomologistproposed quinarian system (circle theory) - not accepted Oken Lorenz (1799-1851), naturalist: prototype of cell theory(Lamarck 1815-22) Use-and-disuse theory (用不用説)
Giraffe neckThe adaptive force
(Darwin) Natural selection theory (自然淘汰説)Natural variation: factor of evolution ⇔ natural selection: process of evolution
Panselectionism (淘汰万能主義)every evolution can be explained by natural selectionneutral alleles that are not affected by natural selection are not present Mayr, Ernst Walter (1904-2005)1963 "Animal species and evolution Ford, Edmund Brisco (1901-1988)1964 "Ecological genetics (4th edn.)" |
(Nei/根井 1972) Genetic identity (遺伝的同一性)Nei's coefficient of genetic identity, I = Σ(xiyi)/Σ√(Σxi2·Σyi2)xi and yi are the frequencies of the ith allele in population X and Y, respectively. Mean genetic identity, I^ = (IXY)/√(IX·IY)The mean over all loci studied (including monomorphic ones) and is most conveniently calculated. IX, IY and IXY are the arithmetic mean, over all loci of Σxi2, Σyi2 and Σ(xiyi). Red Queen hypothesis (赤の女王仮説)
≈ evolutionary arms race (軍拡競争) 1973 van Valen, Leigh M.: proposed the hypothesis Predator avoidance (被食回避) on plantsChemical protectionPoison (secondary metabolites)
about 200 plant species have poison to some extent
Flavor Specific organs - spine, prickle, thorn, etc. Biological protection
symbiosis (Raven 1964) Escape and radiate coevolution |
CompetitionLotka, Alfred James (1880-1949): Polish-American (math and statistics)
Evolution (+ succession): go towards maximizing energy flux (1922) ☛ Lotka-Volterra equation Intrapopulational-specific competition= inter-specific competition |
Interpopulational-sepcific competition= inter-specific competition(Evolutionary) fitness (適応度), w or ωquantitative representation of natural selection, including sexual selection, within evolutionary biologyGame theory (ゲーム理論)Def. Zero-sum nicheDef. Zero-sum dynamics |
1871 Darwin
polygamy (一夫多妻) = polygyrous + polyandeous Sex selection (性淘汰)1) Optimal sex ratio2) Mating system |
= plant science(s) or plant biology |
= animal science(s) or animal biology Gessner, Conrad (Gesnerus, Conradus) 1516–1565, Switzerland 1551–1558, 1587 Historiae animalium: developed modern zoology |
Vertebrates (脊椎動物)ThermoregulationHomeotherms (恒温動物) = warm-blooded animals (温血動物) ⇔maintaining a stable internal body temperature regardless of external influence Poikilotherms (変温動物) = cold-blooded animals (冷血動物)
fluctuating body temperature with its external environment Invertebrates (無脊椎動物) |