Knowledge (XXG)

Alexander John Nicholson

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188: 72:, therefore leading to a massive amount of eggs laid. Then he made sure maggots only had 50 grams of food per day. So after the eggs hatched almost all of the maggots died prior to adulthood. This led to a decline in adult populations and then the population reached such low numbers that the eggs actually produced had ample food to reach adulthood. Hence, the adult population rose again, creating a constant cycle 201: 254: 194: 62:
of the sheep which makes them grow bigger. The sheep possibly die when the maggots penetrate the skin and feed on their internal organs. Due to the need of a meal for blowfly females to lay eggs, density dependence effects on their populations was studied by Nicholson.
34: 440: 58:. The interesting thing about sheep blowfly females is that they must receive a meal before laying eggs near the tail or by exposed wounds. Next, the maggots hatch from the eggs, 435: 450: 238: 386: 76: 75:. In the second experiment he limited the amount of food for both maggots and adults. This resulted in a population increase until it hit the carrying capacity 455: 445: 295: 38: 425: 37:
Division of Economic Entomology for 24 years and is credited with initiating the professional era in Australian entomology. He was a Foundation
231: 133:, National Centre of Biography, Australian National University. First published in Australian Dictionary of Biography, Volume 15, (MUP), 2000. 460: 430: 224: 105: 288: 465: 82: 281: 45: 69:
In Nicholson's first experiment he gave an abundance of food to the adult blowflies so females could lay eggs
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and served in the British military in World War I. He came to Australia in 1921.
200: 340:"A Model of Nicholson's Blowfly Cycles and its Relevance to Predation Theory" 78:. This experiment exhibited the effects of density dependence on population. 73: 70: 253: 193: 371: 339: 363: 54:
He performed his experiments of population dynamics on the
269: 212: 44:Nicholson was born in Ireland. He studied at the 207:This article about an Australian scientist is a 441:Commanders of the Order of the British Empire 338:Readshaw, J. L.; Cuff, W. R. (October 1980). 289: 232: 8: 436:Fellows of the Australian Academy of Science 114:Records of the Australian Academy of Science 39:Fellow of the Australian Academy of Science 451:Fellows of the Royal Entomological Society 296: 282: 239: 225: 141: 22:(25 March 1895 – 28 October 1969) was an 305: 94: 127:Nicholson, Alexander John (1895–1969) 7: 250: 248: 183: 181: 456:20th-century Australian zoologists 446:Australian people of Irish descent 268:. You can help Knowledge (XXG) by 211:. You can help Knowledge (XXG) by 131:Australian Dictionary of Biography 103:Alexander John Nicholson 1895-1969 14: 252: 199: 192: 186: 426:British emigrants to Australia 1: 33:. He was Chief of the CSIR / 16:Irish Australian entomologist 385:Bowman, W. D.; Hacker, S.D. 482: 461:Australian scientist stubs 314:"Australian Sheep Blowfly" 247: 180: 29:who specialized in insect 344:Journal of Animal Ecology 166: 157: 149: 144: 431:Australian entomologists 67:Findings and Conclusions 46:University of Birmingham 20:Alexander John Nicholson 170:Edward de Courcy Clarke 260:This article about an 101:Mackerras, I.M. 1970. 83:Nicholson–Bailey model 81:He is notable for the 356:1980JAnEc..49.1005R 153:Joseph Garnett Wood 125:D. F. Waterhouse, " 31:population dynamics 466:Entomologist stubs 108:2007-09-02 at the 318:Australian Museum 277: 276: 220: 219: 176: 175: 167:Succeeded by 473: 401: 400: 398: 396: 382: 376: 375: 350:(3): 1005–1010. 335: 329: 328: 326: 324: 310: 298: 291: 284: 256: 249: 241: 234: 227: 203: 198: 197: 196: 190: 182: 150:Preceded by 142: 134: 123: 117: 99: 60:feeding on flesh 24:Irish Australian 481: 480: 476: 475: 474: 472: 471: 470: 406: 405: 404: 394: 392: 384: 383: 379: 337: 336: 332: 322: 320: 312: 311: 307: 303: 302: 246: 245: 191: 185: 178: 172: 163: 155: 138: 137: 124: 120: 110:Wayback Machine 100: 96: 91: 17: 12: 11: 5: 479: 477: 469: 468: 463: 458: 453: 448: 443: 438: 433: 428: 423: 418: 408: 407: 403: 402: 377: 330: 304: 301: 300: 293: 286: 278: 275: 274: 257: 244: 243: 236: 229: 221: 218: 217: 204: 174: 173: 168: 165: 156: 151: 147: 146: 136: 135: 118: 93: 92: 90: 87: 15: 13: 10: 9: 6: 4: 3: 2: 478: 467: 464: 462: 459: 457: 454: 452: 449: 447: 444: 442: 439: 437: 434: 432: 429: 427: 424: 422: 419: 417: 414: 413: 411: 391:. p. 236 390: 389: 381: 378: 373: 369: 365: 361: 357: 353: 349: 345: 341: 334: 331: 319: 315: 309: 306: 299: 294: 292: 287: 285: 280: 279: 273: 271: 267: 263: 258: 255: 251: 242: 237: 235: 230: 228: 223: 222: 216: 214: 210: 205: 202: 195: 189: 184: 179: 171: 162: 161: 154: 148: 143: 140: 132: 128: 122: 119: 115: 111: 107: 104: 98: 95: 88: 86: 84: 79: 77: 74: 71: 68: 64: 61: 57: 56:Sheep blowfly 53: 49: 47: 42: 40: 36: 32: 28: 25: 21: 393:. Retrieved 387: 380: 364:10.2307/4241 347: 343: 333: 321:. Retrieved 317: 308: 270:expanding it 262:entomologist 259: 213:expanding it 206: 177: 160:Clarke Medal 158: 139: 130: 121: 113: 97: 80: 66: 65: 51: 50: 43: 27:entomologist 19: 18: 421:1969 deaths 416:1895 births 52:Experiments 410:Categories 89:References 116:2:66 - 81 106:Archived 395:6 March 388:Ecology 352:Bibcode 323:6 March 145:Awards 370:  368:JSTOR 264:is a 164:1953 35:CSIRO 397:2021 372:4241 325:2021 266:stub 209:stub 360:doi 129:", 41:. 412:: 366:. 358:. 348:49 346:. 342:. 316:. 112:. 85:. 399:. 374:. 362:: 354:: 327:. 297:e 290:t 283:v 272:. 240:e 233:t 226:v 215:.

Index

Irish Australian
entomologist
population dynamics
CSIRO
Fellow of the Australian Academy of Science
University of Birmingham
Sheep blowfly
feeding on flesh



Nicholson–Bailey model
Alexander John Nicholson 1895-1969
Archived
Wayback Machine
Nicholson, Alexander John (1895–1969)
Joseph Garnett Wood
Clarke Medal
Edward de Courcy Clarke
Flag of Australia
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expanding it
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entomologist
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