Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

The early wasp plucks the… - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

The early wasp plucks the flower: disparate extant diversity of sawfly superfamilies (Hymenoptera: "Symphyta') may reflect asynchronous switching to angiosperm hosts

Artikel i vetenskaplig tidskrift
Författare T. Nyman
R. E. Onstein
Daniele Silvestro
S. Wutke
A. Taeger
N. Wahlberg
S. M. Blank
T. Malm
Publicerad i Biological Journal of the Linnean Society
Volym 128
Nummer/häfte 1
Sidor 1-19
ISSN 0024-4066
Publiceringsår 2019
Publicerad vid Institutionen för biologi och miljövetenskap
Sidor 1-19
Språk en
Länkar dx.doi.org/10.1093/biolinnean/blz07...
Ämnesord diversification rates, flowering plants, insect-plant interactions, macroevolution, mass extinctions, trait-dependent speciation, diversification shifts, plant associations, bayesian-analysis, species richness, extinction rates, r package, evolution, phylogeny, radiation, Evolutionary Biology
Ämneskategorier Evolutionsbiologi

Sammanfattning

The insect order Hymenoptera originated during the Permian nearly 300 Mya. Ancestrally herbivorous hymenopteran lineages today make up the paraphyletic suborder Symphyta', which encompasses c. 8200 species with very diverse host-plant associations. We use phylogeny-based statistical analyses to explore the drivers of diversity dynamics within the Symphyta', with a particular focus on the hypothesis that diversification of herbivorous insects has been driven by the explosive radiation of angiosperms during and after the Cretaceous. Our ancestral-state estimates reveal that the first symphytans fed on gymnosperms, and that shifts onto angiosperms and pteridophytes - and back - have occurred at different time intervals in different groups. Trait-dependent analyses indicate that average net diversification rates do not differ between symphytan lineages feeding on angiosperms, gymnosperms or pteridophytes, but trait-independent models show that the highest diversification rates are found in a few angiosperm-feeding lineages that may have been favoured by the radiations of their host taxa during the Cenozoic. Intriguingly, lineages-through-time plots show signs of an early Cretaceous mass extinction, with a recovery starting first in angiosperm-associated clades. Hence, the oft-invoked assumption of herbivore diversification driven by the rise of flowering plants may overlook a Cretaceous global turnover in insect herbivore communities during the rapid displacement of gymnosperm- and pteridophyte-dominated floras by angiosperms.

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?