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Effetti selettivi della temperatura in Tisbe clodiensis (Copepoda Harpacticoida)

Giancarlo Fava

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti (1972)

  • Volume: 53, Issue: 1-2, page 186-191
  • ISSN: 0392-7881

Abstract

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Laboratory populations of Tisbe clodiensis have been studied to provide information on the action of temperature on the fitness of some genotypes. All the populations were started with virgin females and males of the three genotypes (pp, pP, PP) at f(p) = 0.2 in agreement with Hardy-Weinberg distribution. Three of them were maintained at I5°C. and sampled at intervals of about 30 days, during a period of 273 days. Other populations have been kept at 18°C. and sampled at shorter intervals. The frequency of the allele p at 18°C. increased rapidly and after about 6 generations f(p) reached the value 0.6. In the populations kept at 15°C. after the same number of generations f(p) reached 0.4 only. These data show that the fitness of the gene considered can be influenced by temperature: in particular the dominant allele appears to be favoured by the lower temperature.

How to cite

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Fava, Giancarlo. "Effetti selettivi della temperatura in Tisbe clodiensis (Copepoda Harpacticoida)." Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti 53.1-2 (1972): 186-191. <http://eudml.org/doc/295804>.

@article{Fava1972,
author = {Fava, Giancarlo},
journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti},
language = {ita},
month = {7},
number = {1-2},
pages = {186-191},
publisher = {Accademia Nazionale dei Lincei},
title = {Effetti selettivi della temperatura in Tisbe clodiensis (Copepoda Harpacticoida)},
url = {http://eudml.org/doc/295804},
volume = {53},
year = {1972},
}

TY - JOUR
AU - Fava, Giancarlo
TI - Effetti selettivi della temperatura in Tisbe clodiensis (Copepoda Harpacticoida)
JO - Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti
DA - 1972/7//
PB - Accademia Nazionale dei Lincei
VL - 53
IS - 1-2
SP - 186
EP - 191
LA - ita
UR - http://eudml.org/doc/295804
ER -

References

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  1. BATTAGLIA, B. (1959) - Il polimorfismo adattativo e i fattori della selezione nel Copepode Tisbe reticulata Bocquet, «Archo Oceanogr. Limnol.», 11, 19-69. 
  2. BATTAGLIA, B. (1960) - Ricerche sull'azione della selezione naturale in popolazioni sperimentali di un Copepode marino, «Archo Oceanogr. Limnol.», 12, 145-162. 
  3. BATTAGLIA, B. e FAVA, G. (1968) - Prime osservazioni sulla genetica di popolazioni naturali e sperimentali di Tisbe clodiensis n.sp. (Copepoda Harpacticoidd), «Riv. Biol.», 61, 3-19. 
  4. BATTAGLIA, B. e LAZZARETTO, I. (1967) - Effect oftemperature on the selective value of genotypes of the Copepod Tisbe reticulata, «Nature», 215, 999-1001. 
  5. BIRCH, L. G., DOBZHANSKY, TH., ELLIOTT, P. O. e LEWONTIN, R. C. (1963) - Relative fitness of geographic races of Drosophila serrata, «Evolution», 17, 72-83. 
  6. DOBZHANSKY, TH. (1948) - Genetics of natural populations. XVI. Altitudinal and seasonal changes produced by natural selection in certain populations of Drosophila pseudoobscura and Drosophila persimilis, «Genetics», 33, 158-176. 
  7. FAVA, G. (1972) - Struttura genetica di popolazioni sperimentali di Tisbe clodiensis e selezione naturale, «Atti Ist. veneto Sci.», 130, 161-170. 
  8. LAZZARETTO, I. (1964) - Influenza della temperatura sul valore adattativo di alcuni genotipi in popolazioni artificiali di Tisbe. reticulata, «Boll. Zool.», 31, 1125-1131. 
  9. LAZZARETTO-COLOMBERA, I. e POLO, G. (1969) - Polimorfismo e superiorità degli eterozigoti nel Copepode Harpacticoide Tisbe clodiensis, «Atti Ist. veneto Sci.», 127, 383-392. 
  10. WRIGHT, S. e DOBZHANSKY, TH. (1946) - Genetics of natural populations. XII. Experimental reproduction of some of the changes caused by natural selection in certain populations of Drosophila pseudoobscura, «Genetics», 31, 125-256. 

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