Possible implications of weather variation on reproductive phenology of European common toad in southeastern Europe
We tracked yearly variation in breeding phenology in relation to weather parameters in a common European toad population from the southeastern part of its range. Phenological data were collected from 2001 to 2003 and from 2011 to 2017 and compared to open-access daily weather data from a nearby weather station. Data analysis revealed no significant effect of weather on initiation of breeding and a negative relationship between mean daily humidity and mean cloud cover on the duration of breeding season (P = 0.03). Further analysis showed a decreasing trend in breeding season humidity in the past 70 years. Our results predict a tendency toward longer toad breeding seasons in years with drier winter/spring. A projected decrease in humidity in this region could prolong toad breeding season, potentially exposing adults to higher predation. Therefore, the scenario of further decline in our study population should be considered and conservation measures planned accordingly.
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- Arnfield H, Grant R, Monk C, Uller T (2012). Factors influencing
the timing of spring migration in common toads (Bufo
bufo). Journal of Zoology 288: 112-118. doi: 10.1111/j.1469-
7998.2012.00933.x
- Arnold EN, Ovenden DW (2002). Reptiles and Amphibians of
Europe. 2nd ed. Princeton, NJ, USA: Princeton University
Press.
- Borkin LJ, Veith M (1997). Bufo bufo (Linnaeus 1758). In: Gasc JP,
Cabela A, Crnobrnja-Isailović J, Dolmen D, Grossenbacher K
et al. (editors). Atlas of Amphibians and Reptiles in Europe.
Paris, France: Societas Europaea Herpetologica & Museum
Nationall d’Histoire Naturelle (IEGB/SPN), pp. 118-119.
- Brázdil R, Chromá K, Dobrovolný P, Tolasz R (2009). Climate
fluctuations in the Czech Republic during the period 1961–
2005. International Journal of Climatology 29 (2): 223-242.
doi: 10.1002/joc.1718
- Brunetti M, Lentini G, Maugeri M, Nanni T, Auer I et al. (2009).
Climate variability and change in the Greater Alpine Region
over the last two centuries based on multi‐variable analysis.
International Journal of Climatology 29 (15): 2197-2225. doi:
10.1002/joc.1857
- Butler CJ, García‐Suárez AM (2012). Relative humidity at Armagh
Observatory, 1838–2008. International Journal of Climatology
32 (5): 657-668. doi: 10.1002/joc.2302
- Corn PS (2005). Climate change and amphibians. Animal
Biodiversity and Conservation 28: 59-67.
Ćorović J, Crnobrnja-Isailović J (2018). Aspects of thermal ecology
of the meadow lizard (Darevskia praticola). Amphibia-Reptilia
39: 229-238. doi: 10.1163/15685381-17000218
- Cvetković D, Tomašević N, Ficetola GF, Crnobrnja-Isailović J,
Miaud C (2009). Bergmann’s rule in amphibians: Combining
demographic and ecological parameters to explain body size
variation among populations in the Common toad Bufo bufo.
Journal of Zoological Systematics and Evolutionary Research
47: 171-180. doi: 10.1111/j.1439-0469.2008.00504.x
- Davies NB, Halliday TR (1979). Competitive mate searching in male
common toads Bufo bufo. Animal Behaviour 27: 1253-1267.
doi: 10.1016/0003-3472(79)90070-8
- Gocić M, Trajković S (2013). Analysis of changes in meteorological
variables using Mann-Kendall and Sen’s slope estimator
statistical tests in Serbia. Global Planet Change 100: 172-182.
doi: 10.1016/j.gloplacha.2012.10.014
- Green DM (2017). Amphibian breeding phenology trends under
climate change: Predicting the past to forecast the future.
Global Change Biology 23: 646-656. doi: 10.1111/gcb.13390
- Hemelaar SM (1983). Age of Bufo bufo in amplexus over the spawning
period. Oikos 40: 1-5. doi: 10.2307/3544193
- Hettyey A, Vági B, Hévizi G, Török J (2009). Changes in sperm stores,
ejaculate size, fertilization success, and sexual motivation over
repeated matings in the common toad, Bufo bufo (Anura:
Bufonidae). Biological Journal of Linnean Society 96: 361-371.
doi: 10.1111/j.1095-8312.2008.01126.x
- Hettyey A, Vági B, Török J, Hoi H (2012). Allocation in reproduction
is not tailored to the probable number of matings in common
toad (Bufo bufo) males. Behavioral Ecology and Sociobiology
66: 201-208. doi: 10.007/s00265-011-1267
- Hoglund J (1989). Pairing and spawning patterns in the common
toad, Bufo bufo: the effects of the sex ratios and the time
available for male-male competition. Animal Behaviour 38:
423-429. doi: 10.1016/S0003-3472(89)80035-1
- Jovanović B, Crnobrnja-Isailović J (2019). Fluctuations in population
abundance in two anurans from Central Serbia. Herpetozoa
32: 65-71. doi: 10.3897/herpetozoa.32.e35660
- Jovanović O, Šafarek G, Samardžić M (2011). A field observation of
common buzzard predating on common toad. Hyla 2011: 37-
38.
- Klein Tank AMG, Wijngaard JB, Können GP, Böhm R, Demarée G
(2002). Daily dataset of 20th-century surface air temperature
and precipitation series for the European Climate Assessment.
International Journal of Climatology 22 (12): 1441-1453. doi:
10.1002/joc.773
- Kovář R, Brabec M (2007). Reproduction strategy of Bufo bufo
(Amphibia: Anura) in the Strnady breeding pond, Czech
Republic. Acta Societatis Zoologicae Bohemicae 71 (3-4): 173-
192.
- Lode T (1996). Polecat predation of frogs and toads at breeding sites
in Western France. Ecology, Ethology & Evolution 8: 115-124.
doi: 10.1080/08927014.1996.9522922.
- Olson DH (1989). Predation on Breeding Western Toads (Bufo
boreas). Copeia 1989: 391-397. doi: 10.2307/1445435
Phillimore AB, Hadfield JD, Jones OR, Smithers RJ (2010).
- Differences in spawning date between populations of common
frog reveal local adaptation. Proceedings of the National
Academy of Sciences of the USA 107: 8292-8297.
- Prodon R, Geniez P, Cheylan M, Devers F, Chuine I et al. (2017).
Reversal of the shift towards earlier spring phenology in several
Mediterranean reptiles and amphibians during the 1998-2013
warming slowdown. Global Change Biology 23: 5481-5491.
doi: 10.1111/gcb.13812
- R Core Team (2019). A Language and Environment for Statistical
Computing. Vienna, Austria: R Foundation for Statistical
Computing.
- Reading CJ (1998). The effect of winter temperatures on the timing
of breeding activity in the Common toad Bufo bufo. Copeia 4:
469-475. doi: 10.1007/s004420050682
- Reading CJ (2003). The effects of variation in climatic temperature
(1980-2001) on breeding activity and tadpole stage duration in
the common toad, Bufo bufo. Science of the Total Environment
310: 231-236. doi: 10.1016/S0048-9697(02)00643-5
- Reading CJ, Clarke RT (1983). Male breeding behaviour and mate
acquisition in the common toad, Bufo bufo. Journal of Zoology
201: 237-246. doi: 10.1111/j.1469-7998.1983.tb04273.x
- Ruosteenoja K, Räisänen P (2013). Seasonal changes in solar
radiation and relative humidity in Europe in response to global
warming. American Meteorological Society 26: 2467-2481.
doi: 10.1175/JCLI-D-12-00007.1
- Sillero N, Campos J, Bonardi A, Corti C, Creemers R et al. (2014).
Updated distribution and biogeography of amphibians
and reptiles of Europe. Amphibia-Reptilia 35: 1-31. doi:
10.1163/15685381-00002935
- Simmons AJ, Willett KM, Jones PD, Thorne PW, Dee DP (2010).
Low-frequency variations in surface atmospheric humidity,
temperature, and precipitation: Inferences from reanalyses
and monthly gridded observational data sets. Journal of
Geophysical Research: Atmospheres 115 (D1): D01110. doi:
10.1029/2009JD012442
- Sinsch U (1988). Seasonal changes in the migratory behaviour of
the toad Bufo bufo: Direction and magnitude of movements.
Oecologia 76: 390-398. doi: 10.1007/BF00377034
- Slater F (2002). Progressive skinning of toads (Bufo bufo) by the
Eurasian otter (Lutra lutra). IUCN Otter Specialist Group
Bulletin 19: 25-29.
- Sztatecsny M, Schabetsberger R (2005). Into thin air: vertical
migration, body condition, and quality of terrestrial habitats of
alpine common toads, Bufo bufo. Canadian Journal of Zoology
83: 788-796. doi: 10.1139/z05-071
- Tomašević N, Cvetković D, Aleksić I, Miaud C, Crnobrnja-Isailović
J (2008). Interannual variation in life history traits between
neighbouring populations of the widespread amphibian Bufo
bufo. Revue d’Écologie (la Terre & la Vie) 63: 73-83.
- Vicente-Serrano SM, Lopez-Moreno JI, Beguería S, Lorenzo-Lacruz
J, Sanchez-Lorenzo A et al. (2014). Evidence of increasing
drought severity caused by temperature rise in southern
Europe. Environmental Research Letters 9 (4): 044001. doi:
10.1088/1748-9326/9/4/044001
- Voituron Y, Lengagne T (2008). Freezing before mating severely
affects the fitness of a capital breeder. Physiological Biochemical
Zoology 81: 204-210. doi: 10.1086/527422
- Vukov T, Kalezić ML, Tomović L, Krizmanić I, Jović D et al. (2013).
Amphibians in Serbia – Distribution and diversity patterns.
Bulletin Natural History Museum Belgrade 6: 90-112. doi:
10.5937/bnhmb1306090V
- Wells KD (1977). The social behaviour of anuran amphibians. Animal
Behaviour 25: 666-693. doi: 10.1016/0003-3472(77)90118-X
- While GM, Uller T (2014). Quo vadis amphibia? Global warming
and breeding phenology in frogs, toads and salamanders.
Ecography 37: 921-929. doi: 10.1111/ecog.00521
- Wypych A (2010). Twentieth century variability of surface humidity
as the climate change indicator in Kraków (Southern Poland).
Theoretical and Applied Climatology 101 (3-4): 475-482. doi:
10.1007/s00704-009-0221-y