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VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260522T113453Z
UID:https://www.ab.mpg.de/events/45743/345436
DTSTART:20260612T083000Z
DTEND:20260612T093000Z
CLASS:PUBLIC
CREATED:20260519T061522Z
DESCRIPTION: Female-biased investment into zygote formation (anisogamy) oft
 en leads to ‘Darwinian sex roles’ with stronger male competition and l
 arger female choice. Often\, this also comes with larger female investment
  into parental care. In some species\, however\, these sex roles are ‘re
 versed’ with females competing more strongly\, and males providing more 
 care. In birds\, this occurs in about 1% of all species\, most of which ar
 e precocial\, that is the young are covered with feathers at hatching and 
 leave the nest\, immediately. So far\, the only known group of altricial b
 irds (where young hatch naked and need to be warmed and fed in the nest) i
 n which sex roles are reversed are coucals (<i>Centropodinae</i>). At leas
 t one species – the black coucal (<i>Centropus grillii</i>) – has evol
 ved a classical polyandrous mating system with large females competing for
  access to small males. A female forms a ‘harem’ with up to five males
 \, each of which tends his own nest and young without help from the female
 . In south-western Tanzania\, black coucals share their habitat with white
 -browed coucals (<i>C. superciliosus</i>)\, which are socially and genetic
 ally monogamous and provide biparental care\, allowing me to study close r
 elatives with different mating systems in the same habitat. Recently\, I a
 dded the lesser coucal (<i>C. bengalensis</i>) to my study portfolio\, the
  closest relative of the black coucal. I ask how and why sex roles in couc
 als evolved\, attempting to explore the phenomenon from all four angles of
  Tinbergen’s questions. Specifically\, I ask which mechanisms drive sex 
 roles\, how do sex roles develop during ontogeny\, what are the benefits o
 f reversed sex roles\, and which life-history and ecological factors led t
 o their evolution? The recent add-on of the lesser coucal (<i>C. bengalens
 is</i>) to my study portfolio will help to answer some chicken-and-egg pro
 blems.\nVortragende(r): Wolfgang Goymann
LAST-MODIFIED:20260519T065411Z
LOCATION:MPI-AB Möggingen\, Raum: Seminar room MPI-AB Möggingen + Online
ORGANIZER;CN=Max Planck Institute of Animal Behavior:mailto:ksafi@ab.mpg.de
SUMMARY:Rado Seminar by Wolfgang Goymann: Sex roles in coucals - a unique m
 odel system to answer Tinbergen's 4 questions
URL;VALUE=URI:https://www.ab.mpg.de/events/45743/345436
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