BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Europe/Vienna
BEGIN:DAYLIGHT
DTSTART:20250330T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20241027T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CET
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260416T205335Z
UID:1737633600@ist.ac.at
DTSTART:20250123T130000
DTEND:20250123T140000
DESCRIPTION:Speaker: Linda Sartoris\nhosted by Georgios Katsaros \nAbstract
 : Social interaction networks of insect colonies facilitate efficient info
 rmation exchange and demonstrate adaptive changes to mitigate disease tran
 smission. While circadian rhythms influence individual behaviour\, their r
 ole in shaping colony-level defences against pathogens remains unexplored.
  Here\, we investigate whether social networks of the black garden ant\, L
 asius niger\, exhibit circadian rhythms and how these rhythms influence di
 sease vulnerability when colonies are exposed to a pathogen during the day
  or the night.We first establish baseline daily variations in activity and
  network dynamics in pathogen-free colonies\, revealing constitutive daily
  fluctuations in disease susceptibility. Subsequently\, we examine pathoge
 n-induced changes in sanitary care and network dynamics by exposing forage
 rs to a natural pathogen (Metarhizium brunneum) during either the day or n
 ight. Individual pathogen loads were measured after a nine-hour post-expos
 ure period to evaluate transmission outcomes.Our results demonstrate that 
 diurnal ant colonies maintain robust circadian patterns in network propert
 ies while flexibly adapting to pathogen exposure. Ants upregulate sanitary
  care irrespective of exposure timing\, prioritising the protection of the
  valuable colony centre consisting of nurses and the queen. These findings
  underscore the robustness and adaptability of ant colonies in balancing c
 ircadian rhythms with effective social immune responses.
LOCATION:Moonstone Bldg / Ground floor / Seminar Room E and zoom\, ISTA
ORGANIZER:
SUMMARY:Linda Sartoris: Thesis Defense: The effect of circadian rhythm on o
 rganisational immunity of ant colonies 
URL:https://talks-calendar.ista.ac.at/events/5479
END:VEVENT
END:VCALENDAR