How good are European tree frog (Hyla arborea) tadpoles in hiding?
2022
Аутори:
Mirč, MarkoVukov, Tanja
Kijanović, Ana
Tomašević Kolarov, Nataša
Остала ауторства
Crnobrnja-Isailović, JelkaVukov, Tanja
Vučić, Tijana
Tomović, Ljiljana
Тип документа:
Конференцијски прилог (Објављена верзија)
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© 2022 Institute for Biological Research "Siniša Stanković" – National Institute of Republic of Serbia, University of Belgrade
Метаподаци
Приказ свих података о документуАпстракт:
Amphibian tadpoles can avoid threats through defensive coloration and
defensive behavior. Another response to the exposure to threats is shape modification.
We studied if and how quickly can Hyla arborea tadpoles achieve crypsis, by changing
skin pigmentation, when introduced to environments with different background
colorations. We also analyzed the reversibility of the skin color change and how
different backgrounds affect tadpole body length, shape, and ontogenetic pathways. In
addition, we tested if tadpoles can perceive their own coloration and actively choose
an appropriate background. For this purpose, we reared tadpoles on white and black
backgrounds. Half of the tadpoles from each treatment were switched to the alternative
background halfway through the experiment. Coloration and length data were
collected six times during the experiment, while data for shape and ontogenetic
pathways analysis were collected twice (before the switch and at the end of the
experiment). The behavioral test was performed at the end of the experiment. Our
results suggest that H. arborea tadpoles can rapidly respond to the changes in the
environmental background and this color change is reversible, but adaptation to the
white background is not that good. Even though some physiological costs of rapid color
change, especially in switched treatments, surely exist, according to our results this
stress is not great enough to be expressed in variation of tadpoles’ body length.
However, some shape differences between treatments were evident. Tadpoles who
were initially introduced in the white background had deeper tail fins and more
pronounced snouts, a typical shape response when predation risk is perceived. Our
results, also suggest that H. arborea tadpoles can recognize their own coloration and
actively choose appropriate surroundings to maximize crypsis. This study represents
the basis for the future analysis of adaptive coloration as it has a very complex function
in anurans.
Кључне речи:
Hyla arborea; phenotypic plasticity; defensive behaviorФинансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200007 (Универзитет у Београду, Институт за биолошка истраживања 'Синиша Станковић') (RS-MESTD-inst-2020-200007)
У:
- Crnobrnja-Isailović J, Vukov T, Vučić T, Tomović Lj, editors. Program and Book of Abstracts: the 21st European Congress of Herpetology; 2022 Sep 5-9; Belgrade, Serbia. Belgrade: Institute for Biological Research "Siniša Stanković"– National Institute of Republic of Serbia, University of Belgrade; 2022. p. 110.