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2015 ; 6
(ä): 8370
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Herbivory increases diversification across insect clades
#MMPMID26399434
Wiens JJ
; Lapoint RT
; Whiteman NK
Nat Commun
2015[Sep]; 6
(ä): 8370
PMID26399434
show ga
Insects contain more than half of all living species, but the causes of their
remarkable diversity remain poorly understood. Many authors have suggested that
herbivory has accelerated diversification in many insect clades. However, others
have questioned the role of herbivory in insect diversification. Here, we test
the relationships between herbivory and insect diversification across multiple
scales. We find a strong, positive relationship between herbivory and
diversification among insect orders. However, herbivory explains less variation
in diversification within some orders (Diptera, Hemiptera) or shows no
significant relationship with diversification in others (Coleoptera, Hymenoptera,
Orthoptera). Thus, we support the overall importance of herbivory for insect
diversification, but also show that its impacts can vary across scales and
clades. In summary, our results illuminate the causes of species richness
patterns in a group containing most living species, and show the importance of
ecological impacts on diversification in explaining the diversity of life.