+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Different temperature relations of two species of toads that coexist at the border of their geographic distribution

, : Different temperature relations of two species of toads that coexist at the border of their geographic distribution. Amphibia-Reptilia 18(3): 259-268

Temperature relations of two species of toads (Bufo viridis and Bufo regularis) that overlap at the border of their geographical distributions were studied in the laboratory in temperatures between 25 degree C and 2 degree C. Bufo regularis, a tropical species, could not survive at low temperatures that eventually led to its death in 1-2 days. The two species did not differ in their cooling and heating rates. At temperatures below 8-10 degree C, Bufo viridis maintained a body temperature that was higher than ambient by 1-2 degree C, while body temperature of Bufo regularis equaled that of the environment. In Bufo regularis heart beats ceased at low temperatures ( lt 4 degree C), whereas in Bufo viridis at the same temperature, a rate of 6-9 beats/min was sustained. Our experiments suggest that Bufo viridis is endowed with particular capacities that allow it to remain active at low temperatures, while in Bufo regularis, a temperature-sensitive central mechanism seems to be damaged at low temperature. The ability of Bufo viridis to endure low temperatures and to remain active in this condition is specific to the species, and is not related directly to the immediate ecological situation of the animal.


DOI: 10.1163/156853897x00143

Other references

Helle, T.; Hartzell, R.; Nieminen, P.; Lankinen, P., 1995: Method and an equipment for installing a medicine capsule on a support. Official Gazette of the United States Patent & Trademark Office Patents 1172(4): 2255, March 28

Loewer, Peter, 1988: Annual grasses for garden and bouquet. Brooklyn Botanic Garden Record, Plants and Gardens 44 Fall : 9

Tallan, H.H.; Cliffton, E.E.; Downie, G.R., 1949: Spectrophotometric method for assay of serum antiprotease; clinical applications. Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine 70(4): 667-670

Chauhan, H.V.S.; Singh, C.M., 1971: Studies on the pathology of pulmonary adenomatosis complex of sheep and goats. II. Viral pneumonitis (atypical pneumonia). The histological picture was characterized by epithelialization, massive peribronchial and perivascular lymphoid reaction, massive desquamation of alveolar epithelium and the presence of characteristic eosinophilic intracytoplasmic inclusions. An...

Gavrilov, O.K.; Kozinets, G.I.; Bykova, I.A.; Shishkanova, Z.G.; Matvienko, V.P.; Ryapolova, I.V.; Dul'tsina, S.M.; Borzova, L.V.; Kul'man, R.A.; Et-Al, 1980: Hematological aspects of space flights 1. cytological characteristics of peripheral blood. Results were presented from cytological research on the peripheral blood of astronauts completing 8, 96 and 140 day flights. The degree of structural-functional integrity of erythrocytes and leukocytes was determined. Study of the cytochemical rea...

Langlais, F., 2005: Antibiotic-loaded bone cements: from laboratory studies clinical evaluation. Antibiotic-loaded bone cements (ALBC) were initially used empirically, both for the treatment of infected prostheses and for antibioprophylaxis. We conducted in vitro and animal studies as a prerequisite for proper clinical evaluation. We measured...

Kitabayashi T.; Saitoh K.; Kadoi K.; Omori T., 1986: Studies on ibaraki disease virus preparation of hemagglutinating antigen by the use of ultrasonic treatment. In 1975, Halonen reported that HA reaction of rabies virus was found to be dependent on the pH as well as the sodium chloride molarity. Using a similar method, it was reported that epizootic hemorrhagic disease virus, bluetongue virus and african...

Soczewka, B., 2000: New localities of rare vascular plant species in the Mesoregion of omaska Depression (eastern Poland). The distribution of 109 rare vascular plant species in the Mesoregion of omaska Depression, Poland is presented. Twenty species are strictly protected while 8 (Polypodium vulgare, Asarum europaeum, Nymphaea alba, Ribes nigrum, Ledum palustre, Cent...

Thelwell, R.C.; Wagstaff, C.R.D.; Rayner, A.; Chapman, M.; Barker, J., 2016: Exploring athletes' perceptions of coach stress in elite sport environments. NlmCategory="UNASSIGNED">The present study aimed to extend research that has focused on the identification of stressors associated with coaching practice by systematically evaluating how such stressors effect athletes, and more broadl...

Mutlu, E.; Ergev, M.-Betil, 2006: Dynamics and ecology of an Indo-Pacific conch, Conomurex persicus (Mollusca : Gastropoda) in southeastern Turkey. Conomurex persicus, one of the tropical conchs, has been introduced to one of the subtropical regions, the northeastern Mediterranean Sea, and invaded sandy bottoms between I and 10 m deep. Population dynamics were studied from specimens collecte...