Periodicity and duration of molting in the crested newt (Triturus cristatus, Amphibia, Caudata, Salamandridae) under artificial conditions
https://doi.org/10.26897/2949-4710-2025-3-4-4-03
Abstract
This article presents the results of a study on the periodicity and duration of molting in the crested newt (Triturus cristatus (Laurenti, 1768)) under artificial conditions. Observations were conducted over 259 days (from February 11 to September 30, 2022) on 11 pairs of adult individuals maintained under laboratory conditions following artificial wintering. It was established that the highest molting intensity occurs during the breeding season (April–May), with females molting statistically significantly more frequently and for longer periods than males. Outside the reproductive season, both molting frequency and duration decrease. The obtained data suggest that changes in the molting rhythm are associated with the physiological necessity of maintaining efficient cutaneous respiration during the aquatic phase of life, as well as with hormonal and energetic expenditures related to reproduction. These results expand our understanding of the skin physiology of caudate amphibians and their adaptation to seasonal changes in their life cycle
About the Authors
Anastasia O. Kucherova
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
Anastasia O. Kucherova, postgraduate student of the Department of Zoology and Aquaculture, Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Darina P. Bondar
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Darina P. Bondar, student of the Department of Zoology and Aquaculture, Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Sergey V. Akchurin
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Sergey V. Akchurin, DSc (Vet), Head of the Institute of Animal Science (Zootechnics) and Biology, Russian State Agrarian University – Timiryazev Agricultural Academy
Irina V. Akchurina
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Irina V. Akchurina, CSc (Vet), Associate Professor at the Department of Veterinary Medicine, Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Artem A. Kidov
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Artem A. Kidov, DSc (Bio), Professor, Head of the Department of Zoology and Aquaculture, Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
References
1. Triana T.M., Henao L.M., Bernal M.H. Ontogenetic comparison of the molting frequency in Rhinella marina (Anura: Bufonidae). Iheringia. Série Zoologia. 2013;103:47–50. https://doi.org/10.1590/S0073-47212013000100007
2. Jorgensen C.B., Larsen L.O. Molting and its hormonal control in toads. General and Comparative Endocrinology. 1961; 1:145–153. DOI: 10.1016/0016-6480(61)90042-9
3. Budtz P.E., Larsen L.O. Structure of the toad epidermis during the moulting cycle. I. Light microscopic observations in Bufo bufo (L.). Zeitschrift für Zellforschung und Mikroskopische Anatomie. 1973; 144: 353–368. DOI:10.1007/BF00307582
4. Cramp R.L., McPhee R.K., Meyer E.A. et al. First line of defence: the role of sloughing in the regulation of cutaneous microbes in frogs. Conservation Physiology. 2014; 2(1): cou012. DOI:10.1093/conphys/cou012
5. Bendsen J. Shedding of the skin in the common toad, Bufo bufo bufo (L.). Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening i København. 1956;118:211–223. DOI:10.1111/j.1096-3642.1947.tb00138.x
6. Bouwer S., Ewer D.W., Shi C. Frequency of moulting in Anura. Nature. 1953;172:408. https://doi.org/10.1038/172408a0
7. Taylor S., Ewer D.W. Moulting in the Anura: the normal moulting cycle of Bufo regularis Reuss. Proceedings of the Zoological Society of London. 1956;127:461–478. https:// DOI:10.1111/j.1096-3642.1956.tb00482.x
8. Larsen L.O. Physiology of molting. In: Physiology of the Amphibia. Vol. 3 / Ed. B. Lofts. London: Academic Press, 1976:53–100.
9. Ling J.K. Adaptive functions of vertebrate molting cycles. American Zo-ologist. 1972;12(1):77–93. https://doi.org/10.1093/icb/12.1.77
10. Kidov A.A., Nemyko E.A., Matushkina K.A., Shimanskaya E.A. et al. On molting in the Lanza’s newt, Lissotriton lantzi (Wolterstorff, 1914) under artificial conditions. Vestnik Rossiiskikh Universitetov. Matematika. 2017;22(5–1):926–929. (In Russ.) EDN: JUQXYP
11. Kidov A.A., Nemyko E.A., Shimanskaya E.A. Long-term dynamics of reproductive parameters in female Karelin’s newt, Triturus karelini (Strauch, 1870) under laboratory breeding. Vestnik Tverskogo Gosudarstvennogo Universiteta. Bi-ologiya i Ekologiya. 2018;(4):38–49. (In Russ.) EDN: VZQKMP
12. Kidov A.A., Kidova E.A., Drozdova L.S., Vyatkin Ya.A. et al. Review of husbandry methods for rare and endangered amphibians of Russia and neighbor-ing countries: experience of Timiryazev Academy. Trudy Instituta Zoologii Respu-bliki Kazakhstan. 2021;1(1):89–104. (In Russ.) EDN: XXXXXX
13. Taylor D., Green N., Stout W. Biology. Vol. 3. 4th ed. Moscow: BI-NOM. Laboratoriya Znaniy, 2013:451. (In Russ.)
14. Moore J.A. Physiology of the amphibian. In: Biology of the Amphibia / Ed. B. Lofts. New York: Academic Press, 1965:623.
15. Uteshev V.K., Gakhova E.N., Kramarova L.I. et al. Russian collaborative development of reproduction technologies for the sustainable management of am-phibian biodiversity. Asian Herpetological Research. 2023;14(1):103–115. https://doi.org/10.16373/j.cnki.ahr.220043
16. Jorgensen, C. Larsen L. Rosenkilde Per. Hormonal dependency of molt-ing in amphibians: Effect of radiothyroidectomy in the toad Bufo bufo. General and comparative endocrinology. 1965. Vol. 56. P. – 51. DOI: 10.1016/0016-6480(65)90119-x
17. Ananyeva, N.B. et al. Amphibians and reptiles. Encyclopedia of the na-ture of Russia / N.B. Ananyeva, L.Ya. Borkin, I.S. Darevsky, N.L. Orlov. – M.: ABF, 1998. – 576 p.
18. Kidov, A.A., Matushkina, K.A., Afrin, K.A., and others. Laboratory breeding of Caucasian grey toads (Bufo eichwaldi and B. verrucosissimus) without changing hormonal stimulation / A.A. Kidov, et al. // Modern herpetology. – 2014. – Vol. 14. № 1-2. – pp. 19-26. EDN: TBWFHP
19. Kidov, A.A., Nemyko, E.A., Matushkina, K.A., and others. To study the molting of Lantz's newt, Lissotriton lantzi (Wolterstorff, 1914) under artificial condi-tions // Bulletin of Tambov University. A series of natural and technical sciences. – 2017. – Vol. 22. – No.5-1. – pp. 926-929. DOI:10.20310/1810-0198-2017-22-5-926-929
20. Kidov, A.A., Matushkina, K.A., Shimanskaya, E.A., and others. Season-al dynamics and time budget of moults of Karelin's newt, Triturus karelinii (Strauch, 1870) of the Talysh population in laboratory conditions // Bulletin of Tambov Uni-versity. A series of natural and technical sciences. – 2017. – Vol. 22, No.5-1. – pp. 921-925. EDN:ZRIYPZ
21. Kidov, A.A., Matushkina, K.A., Uteshev, V.K., et al. The first cap-tive breeding of the Eichwald’s toad (Bufo eichwaldi) // Russian Journal of Herpe-tology. – 2014. – V. 21, № 1. – P. 40–46. EDN:RYBHUZ
22. Kuzmin, S.L., Amphibians of the former USSR. Moscow: Collection of scientific publications KMK. 2012. - 370 p.
Review
For citations:
Kucherova A.O., Bondar D.P., Akchurin S.V., Akchurina I.V., Kidov A.A. Periodicity and duration of molting in the crested newt (Triturus cristatus, Amphibia, Caudata, Salamandridae) under artificial conditions. Timiryazev Biological Journal. 2025;3(4):403. (In Russ.) https://doi.org/10.26897/2949-4710-2025-3-4-4-03
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