TY - CHAP
T1 - Fig-figwasp mutualism: the fall of the strict cospeciation paradigm?
AU - Cruaud, Astrid
AU - Cook, James
AU - Da-Rong, Yang
AU - Genson, Gwenaëlle
AU - Jabbour-Zahab, Roula
AU - Kjellberg, Finn
AU - Pereira, Rodrigo Augusto Santinelo
AU - Rønsted, Nina
AU - Santos-Mattos, Otilene
AU - Savolainen, Vincent
AU - Ubaidillah, Rosichon
AU - van Noort, Simon
AU - Yan-Qiong, Peng
AU - Rasplus, Jean-Yves
PY - 2011/1/1
Y1 - 2011/1/1
N2 - At least three classic systems of nursery pollination mutualism are known: the fig (Ficus, Moraceae) – agaonid (Hymenoptera, Chalcidoidea) association (Cook and Rasplus 2003), the yucca (Yucca, Hesperoyucca; Agavaceae) – yucca moths (Tegeticula, Parategeticula; Lepidoptera, Prodoxidae) association (Pellmyr 2003) and the Glodichion (Phyllanthaceae) – Epicephala moths (Lepidoptera, Gracillariidae) association (Kato et al. 2003). All these mutualisms are obligate, which means that each partner depends on the other for its own reproductive success. The insect pollinates the flowers and oviposits in the plant ovaries where the insect larvae subsequently feed on a subset of the developing seeds. A shift from mutualism to parasitism by the pollinating insect would lead to reproduction failure of the plant and, without host shift, to the extinction of both lineages. Therefore, the speciation of mutualistic pollinators is generally believed to be driven by the speciation of their host-plants. In this hypothesis, when an ancestral plant species splits into two daughter species, its mutualistic pollinator also splits. This scenario should result in perfect congruence of hosts and pollinator phylogenies (Farenholz's rule) (Farenholz 1913). However, this seems increasingly unlikely. Indeed, more and more studies on different coevolved associations show that a strict Farenholz's rule is not respected, even when a high level of host specificity exists (e.g. Paterson and Banks 2001; Desdevises et al. 2002; Charleston and Perkins 2006). Topological incongruence between host and associate phylogenetic trees can result from processes like host switching, sorting events (extinction and lineage sorting), duplication events (speciation of the parasite independent of the host), and failure of the associate to diverge when the host diverges (“missing the boat”) (Page 1991; Page 1994; Page and Charleston 1998; Legendre et al. 2002; Charleston and Perkins 2006).
AB - At least three classic systems of nursery pollination mutualism are known: the fig (Ficus, Moraceae) – agaonid (Hymenoptera, Chalcidoidea) association (Cook and Rasplus 2003), the yucca (Yucca, Hesperoyucca; Agavaceae) – yucca moths (Tegeticula, Parategeticula; Lepidoptera, Prodoxidae) association (Pellmyr 2003) and the Glodichion (Phyllanthaceae) – Epicephala moths (Lepidoptera, Gracillariidae) association (Kato et al. 2003). All these mutualisms are obligate, which means that each partner depends on the other for its own reproductive success. The insect pollinates the flowers and oviposits in the plant ovaries where the insect larvae subsequently feed on a subset of the developing seeds. A shift from mutualism to parasitism by the pollinating insect would lead to reproduction failure of the plant and, without host shift, to the extinction of both lineages. Therefore, the speciation of mutualistic pollinators is generally believed to be driven by the speciation of their host-plants. In this hypothesis, when an ancestral plant species splits into two daughter species, its mutualistic pollinator also splits. This scenario should result in perfect congruence of hosts and pollinator phylogenies (Farenholz's rule) (Farenholz 1913). However, this seems increasingly unlikely. Indeed, more and more studies on different coevolved associations show that a strict Farenholz's rule is not respected, even when a high level of host specificity exists (e.g. Paterson and Banks 2001; Desdevises et al. 2002; Charleston and Perkins 2006). Topological incongruence between host and associate phylogenetic trees can result from processes like host switching, sorting events (extinction and lineage sorting), duplication events (speciation of the parasite independent of the host), and failure of the associate to diverge when the host diverges (“missing the boat”) (Page 1991; Page 1994; Page and Charleston 1998; Legendre et al. 2002; Charleston and Perkins 2006).
U2 - 10.1017/CBO9781139014113.005
DO - 10.1017/CBO9781139014113.005
M3 - Book chapter
SN - 9780521198929
T3 - The Systematics Association Special Volume
SP - 68
EP - 102
BT - Evolution of plant-pollinator relationships
A2 - Patiny, Sébastien
PB - Cambridge University Press
ER -