ชื่อผลงานทางวิชาการ
Multilocus phylogeny and historical biogeography of the Crematogaster inflata-group (Hymenoptera: Formicidae) in South-East Asia
ชื่อนักวิจัย
ประเภทผลงาน
บทคัดย่อ
A
recent molecular phylogeny of the genus Crematogaster reclassified some members
of the former subgenera Paracrema and Physocrema into the C. inflata-group, now
comprised of five species: C. ampullaris, C. inflata, C. modiglianii, C.
onusta and C. subcircularis. Here, a molecular analysis of the
Crematogaster inflata-group and eight other species of the former subgenus
Physocrema (C. aurita, C. difformis, C. mucronata, C. physothorax, C.
sewardi, C. tanakai, C. vacca and C. yamanei) is conducted using a
total of c. 4 kb of sequence data from six nuclear protein-coding genes
and two mitochondrial genes. Monophyly of the C. inflata-group is
strongly supported. A revised morphological delineation of the subgroups is
proposed, supported by the molecular phylogeny: three morphologically distinct
subgroups, the C. difformis-subgroup, the C. vacca-subgroup
and the C. inflata-subgroup. Molecular dating and biogeographical
analyses indicate that the C. inflata-group originated in the Sundaic
region around the Middle Miocene 12 Mya and diversified from the Late Miocene
to Pliocene. Ancestral state reconstructions indicate that the C. inflata-group
diversified from an ancestor with a swollen propodeum and circular-shaped
metapleural gland opening. Biogeographical reconstruction indicates that
dispersal to peripheral areas and allopatry due to sea-level changes shaped the
evolutionary history of the C. inflata-group.
ปีที่
2023
สำนักพิมพ์
Linnean Society of London
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