eprintid: 33632 rev_number: 42 eprint_status: archive userid: 1482 importid: 105 dir: disk0/00/03/36/32 datestamp: 2020-01-20 15:37:51 lastmod: 2023-06-08 07:48:09 status_changed: 2023-06-08 07:48:09 type: article metadata_visibility: show creators_name: Peña, Jorge creators_name: Nöldeke, Georg creators_name: Puebla, Oscar creators_idrefppn: 12629819X creators_idrefppn: 201290154 creators_affiliation: Institute for Advanced Study in Toulouse; University of Toulouse Capitole title: The evolution of egg trading in simultaneous hermaphrodites ispublished: pub subjects: subjects_ECO abstract: Egg trading—whereby simultaneous hermaphrodites exchange each other’s eggs for fertilization—constitutes one of the few rigorously documented and most widely cited examples of direct reciprocity among unrelated individuals. Yet how egg trading may initially invade a population of nontrading simultaneous hermaphrodites is still unresolved. Here, we address this question with an analytical model that considers mate encounter rates and costs of egg production in a population that may include traders (who provide eggs for fertilization only if their partners also have eggs to reciprocate), providers (who provide eggs regardless of whether their partners have eggs to reciprocate), and withholders (cheaters who mate only in the male role and just use their eggs to elicit egg release from traders). Our results indicate that a combination of intermediate mate encounter rates, sufficiently high costs of egg production, and a sufficiently high probability that traders detect withholders (in which case eggs are not provided) is conducive to the evolution of egg trading. Under these conditions, traders can invade—and resist invasion from—providers and withholders alike. The prediction that egg trading evolves only under these specific conditions is consistent with the rare occurrence of this mating system among simultaneous hermaphrodites. date: 2020-03 date_type: published publisher: Essex Institute id_number: 10.1101/460386 official_url: http://iast.fr/pub/123846 faculty: tse divisions: tse language: en has_fulltext: TRUE doi: 10.1101/460386 view_date_year: 2020 full_text_status: public publication: American Naturalist volume: vol. 195 number: n° 3 pagerange: 524-533 refereed: TRUE issn: 0003-0147 oai_identifier: oai:tse-fr.eu:123846 harvester_local_overwrite: faculty harvester_local_overwrite: pending harvester_local_overwrite: issn harvester_local_overwrite: publisher harvester_local_overwrite: creators_affiliation harvester_local_overwrite: number harvester_local_overwrite: volume harvester_local_overwrite: publish_to_hal harvester_local_overwrite: hal_id harvester_local_overwrite: hal_version harvester_local_overwrite: hal_url harvester_local_overwrite: hal_passwd harvester_local_overwrite: doi harvester_local_overwrite: id_number harvester_local_overwrite: creators_idrefppn oai_lastmod: 2023-05-26T09:29:36Z oai_set: tse site: ut1 publish_to_hal: FALSE hal_id: hal-02796837 hal_passwd: wwqxht hal_version: 1 hal_url: https://hal.archives-ouvertes.fr/hal-02796837 citation: Peña, Jorge, Nöldeke, Georg and Puebla, Oscar (2020) The evolution of egg trading in simultaneous hermaphrodites. American Naturalist, vol. 195 (n° 3). pp. 524-533. document_url: https://publications.ut-capitole.fr/id/eprint/33632/1/460386v4.full.pdf