Ádám Kőrösi






Research topics

  • Population structure and habitat use of large blue butterflies
  • This topic constituted the main part of my PhD. I was particularly interested in that whether Maculinea populations can fit into any distinct category regarding their population spatial structure. To answer this question I primarily analyzed mark-recapture datasets sampled on local populations to characterize the microdistribution and within-habitat movement of butterflies. Currently I'm working on a comprehensive analysis of several mark-recapture datasets on Maculinea butterflies from Hungary. I aim to identify the most influential environmental factors that affect the demography of these endangered species. Moreover, we conduct a management experiment on wet meadows to study the effects of mowing on populations of the scarce large blue (Maculinea teleius), its host plant and host ants.
  • Oviposition behaviour of large blue butterflies
  • We investigated the oviposition preferences of Maculinea alcon on two sites by different methods: egg censusing and direct observation of oviposition by tracking females. We aim to reveal what factors affect the number of eggs laid (e.g. presence of host ants, host plant density, physiognomy of host plant etc.)
  • Sexual conflict in the clouded Apollo butterfly
  • The clouded Apollo butterfly (Parnassius mnemosyne) has a special mating behaviour as males create a 'sphragis' on females' genitalia after mating to prevent them from further matings. Our work involves the testing of several hypotheses on costs and benefits of sphragis-making for both males and females by field observations and experiments.
  • Movement pattern analysis of the southern festoon butterfly
  • The prevailing patch vs. matrix view of habitat is not appropriate for several species occupying heterogeneous landscapes, because butterflies may use different kinds of resource patches for different purposes and may perform different movement patterns within them. Therefore, I have analyzed the movement paths of individual butterflies in a heterogeneous landscape. As the random walk null-model was not appropriate to characterize their movement, I developed a spatially realistic simulation model in which the effect of patch size and shape could be evaluated. The work is still in progress and involves the development of further models as well as the analysis of movement on different spatial scales (within patches and at landscape scale).

List of publications

  • Kőrösi Á, Örvössy N, Batáry P, Harnos A, Peregovits L in press Different habitat selection by two sympatric Maculinea butterflies at small spatial scale. Insect Conservation and Diversity.
  • Kőrösi Á, Batáry P, Orosz A, Rédei D, Báldi A in press Effects of grazing, vegetation structure and landscape complexity on grassland leafhoppers (Hemiptera: Auchenorrhyncha) and true bugs (Hemiptera: Heteroptera) in Hungary. Insect Conservation and Diversity.
  • Kovács-Hostyánszki A, Kőrösi Á, Orci KM, Batáry P, Báldi A (2011) Set-aside promotes insect and plant diversity in a Central European country. Agriculture, Ecosystems & Environment 141: 296-301.
  • Örvössy N, Vozár Á, Kőrösi Á, Batáry P, Peregovits L (2010) Structure and size of a threatened population of the False Ringlet Coenonympha oedippus (FABRICIUS, 1787) (Lepidoptera: Nymphalidae) in Hungary. Oedippus 26: 31-37.
  • Batáry P, Kőrösi Á, Örvössy N, Kövér S & Peregovits L (2009) Species-specific distribution of two sympatric Maculinea butterflies across different meadow edges. Journal of Insect Conservation 13: 223-230.
  • Kőrösi Á, Örvössy N, Batáry P, Kövér S & Peregovits L (2008) Restricted within-habitat movement and time constrained egg-laying of female Maculinea rebeli butterflies. Oecologia 156: 455-465.
  • Batáry P, Örvössy N, Kőrösi Á & Peregovits L (2008) Egg distribution of the southern festoon (Zerynthia polyxena) (Lepidoptera, Papilionidae). Acta Zoologica Academiae Scientiarum Hungaricae 54: 401-410.
  • Batáry P, Örvössy N, Kőrösi Á, Vályi Nagy M & Peregovits L (2007) Microhabitat preferences of Maculinea teleius (Lepidoptera: Lycaenidae) in a mosaic landscape. European Journal of Entomology 104: 731-736.

Curriculum

  • 2007- research assistant, HAS-HNHM Animal Ecology Research Group
  • 2003-2007: museologist, Collection of Lepidoptera in the Hungarian Natural History Museum (HNHM)
  • 2003: M.Sc. in applied zoology, Szent István University, Faculty of Veterinary Sciences

Cooperations

  • In movement analyses I cooperate with Thomas Hovestadt from University of Würzburg, Germany.
  • I work on the behavioural ecological studies jointly with János Kis from Biological Institute of Szent István University, Budapest, Hungary.
  • Andrea Harnos and her research group at the Szent István University are often involved in the statisical analyses and modelling.

Memberships

Beyond animal ecology