Adaptive physiological variation in nonshivering thermogenesis and its significance in speciation (original) (raw)
We’re sorry, something doesn't seem to be working properly.
Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.
Summary
Nonshivering thermogenesis (NST) magnitude was studied in the four chromosomal species of subterranean mole rats of the_Spalax ehrenbergi_ superspecies in Israel. The four species show a distribution pattern which correlates with increasing aridity. The 2_n_=52 species inhabits the cold and humid regions, 2_n_=54 cold and dry, 2_n_-58 warm and humid, and 2_n_=60 the more arid regions in which temperatures fluctuate daily and annually. NST was measured as the ratio between maximal oxygen\(\dot V_{{\text{o}}_{\text{2}} }\) due to noradrenaline injection and minimal\(\dot V_{{\text{o}}_{\text{2}} }\) measured in anaesthetized animals.
The chromosomal species 2_n_=60 from semiarid and arid habitats has the highest NST value. This fact emerges from the low Basal Metabolic Rate (BMR) of this species relative to all the other three species. A linear correlation was found between NST magnitude and the average daily range of temperature during June and September.
We conclude that speciation of the_S. ehrenbergi_ complex in Israel has thermoregulatory correlates such as heat production by NST, among others. The level of NST appears to be an adaptive physiological characteristic in the ecological speciation of subterranean mole rats.
Access this article
Subscribe and save
- Get 10 units per month
- Download Article/Chapter or eBook
- 1 Unit = 1 Article or 1 Chapter
- Cancel anytime Subscribe now
Buy Now
Price excludes VAT (USA)
Tax calculation will be finalised during checkout.
Instant access to the full article PDF.
Similar content being viewed by others
References
- Borut A, Haim A, Castel M (1978) Nonshivering thermogenesis and implication of the thyroid in cold labile and cold resistant populations of the golden spiny mouse_Acomys russatus_. In: Girardier L, Seydoux J (eds) Effectors of thermogenesis. Experientia (Suppl 32). Birkhauser Basel, pp 219–227
Google Scholar - Depocas F, Hart JS (1957) Use of the Pauling oxygen analyzer for measurements of oxygen consumption of animals in an open-circuit system and in a short-lag, closed-circuit apparatus. J Appl Physiol 10:338–392
Google Scholar - Haim A (1982) Effects of long scotophase and cold acclimation on heat production in two diurnal rodents. J Comp Physiol 148:77–81
Google Scholar - Haim A, Borut A (1976) Thermoregulation and nonshivering thermogenesis as factors limiting distribution of the golden spiny mouse_Acomys russatus_. Isr J Med Sci 12:896
Google Scholar - Haim A, Fourie F LeR (1980a) Heat production in cold and long scotophase acclimated and winter acclimatized rodents. Int J Biomet 24:237–241
Google Scholar - Haim A, Fourie F LcR (1980b) Heat production in nocturnal_Praomys natalensis_ and diurnal_Rhabdomys pumilio_ South African murids. S Afr J Zool 15:91–94
Google Scholar - Haim A, Heth G, Nevo E (1983) Adaptive thermoregulatory patterns in speciating mole rats. Acta Zool Fenn (in press)
- Haim A, Yahav S (1982) Non-shivering thermogenesis in winter-acclimatized and in long-scotophase and cold-acclimated_Apodemus mystacinus_ (Rodentia). J Therm Biol 7:193–195
Google Scholar - Heldmaier G (1971) Zitterfreie Wärmebildung und Körpergröße bei Säugetieren. Z Vergl Physiol 73:222–248
Google Scholar - Heldmaier G (1972) Cold-adaptive changes of heat production in mammals. Proceedings of the International Symposium of Environmental Physiology, Bioenergetics, Dublin 1971. Fed Am Soc Exp Biol, Bethesda, Md, pp 79–81
Google Scholar - Heldmaier G, Steinlechner S, Rafael J, Visiansky P (1981) Photoperiodic control and effects of melatonin on nonshivering thermogenesis and brown adipose tissue. Science 212:917–919
Google Scholar - Hill RW (1972) Determination of oxygen consumption by use of the paramagnetic oxygen analyzer. J Appl Physiol 33:261–263
Google Scholar - Jansky L (1973) Non-shivering thermogenesis and its thermoregulatory significance. Biol Rev 48:85–132
Google Scholar - Kleiber M (1961) The fire of life. Wiley, New York
Google Scholar - Lynch GR (1970) Effect of photoperiod and cold acclimation on non-shivering thermogenesis in_Peromyscus leucopus_. Am Zool 10:308
Google Scholar - Nevo E (1979) Adaptive convergence and divergence of subterranean mammals. Annu Rev Ecol Syst 10:269–308
Google Scholar - Nevo E (1982) Speciation in subterranean mammals. In: Barigozzi C, Montalenti, White MJD (eds) Mechanism of speciation. Liss, New York
Google Scholar - Nevo E (in press) Speciation in action and adaptation in subterranean mole rats: patterns and theory. Sym Population genetics ecology, 49th Italian Congr Zoology, Bari, 5–9 October, 1983
- Nevo E, Shkolnik A (1974) Adaptive metabolic variation of chromosome forms in mole rats,Spalax. Experientea 30:724–726
Google Scholar - Webster AJF (1974) Adaptation to cold. In: Robertshaw D (ed) MTP international review of science, Physiology, Ser 1, vol 7 Environmental physiology. Butterworths, London, pp 71–107
Google Scholar
Author information
Author notes
- G. Heth & E. Nevo
Present address: Institute of Evolution, University of Haifa, Haifa, Israel
Authors and Affiliations
- School of Education of the Kibbutz Movement Oranim, University of Haifa, P.O., 36910, Kiryat Tivon, Israel
A. Haim, G. Heth, Z. Avnon & E. Nevo
Authors
- A. Haim
You can also search for this author inPubMed Google Scholar - G. Heth
You can also search for this author inPubMed Google Scholar - Z. Avnon
You can also search for this author inPubMed Google Scholar - E. Nevo
You can also search for this author inPubMed Google Scholar
Rights and permissions
About this article
Cite this article
Haim, A., Heth, G., Avnon, Z. et al. Adaptive physiological variation in nonshivering thermogenesis and its significance in speciation.J Comp Physiol B 154, 145–147 (1984). https://doi.org/10.1007/BF00684138
- Accepted: 08 August 1983
- Issue Date: March 1984
- DOI: https://doi.org/10.1007/BF00684138