6 Works

Genomic and phenomic analysis of island ant community assembly

Clive Darwell, Georg Fischer, Eli Sarnat, Nicholas Friedman, Cong Liu, Guilherme Baiao, Alexander Mikheyev & Evan Economo
Island biodiversity has long fascinated biologists as it typically presents tractable systems for unpicking the eco-evolutionary processes driving community assembly. In general, two recurring themes are of central theoretical interest. First, immigration, diversification, and extinction typically depend on island geographical properties (e.g. area, isolation, and age). Second, predictable ecological and evolutionary trajectories readily occur after colonization, such as the evolution of adaptive trait syndromes, trends toward specialization, adaptive radiation, and eventual ecological decline. Hypotheses such...

Data from: A test of trophic and functional island biogeography theory with the avifauna of a continental archipelago

Samuel R. P-J. Ross, Nicholas R. Friedman, Julia Janicki & Evan P. Economo
1. The classical MacArthur-Wilson theory of island biogeography (TIB) emphasizes the role of island area and isolation in determining island biotas, but is neutral with respect to species differences that could affect community assembly and persistence. Recent extensions of island biogeography theory address how functional differences among species may lead to non-random community assembly processes and different diversity-area scaling patterns. First, the trophic TIB considers how diversity scaling varies across trophic position in a community,...

Divergent northern and southern populations and demographic history of the pearl oyster in the western Pacific revealed with genomic SNPs

Takeshi Takeuchi
In the open ocean without terrain boundaries, marine invertebrates with pelagic larvae can migrate long distances using ocean currents, suggesting reduced genetic diversification. Contrary to this assumption, however, genetic differentiation is often observed in marine invertebrates. In the present study, we sought to explain how population structure is established in the western Pacific Ocean, where the strong Kuroshio Current maintains high levels of gene flow from south to north, presumably promoting genetic homogeneity. We determined...

Data from: Revision of the highly specialized ant genus Discothyrea (Hymenoptera: Formicidae) in the Afrotropics with x-ray microtomography and 3D cybertaxonomy

Francisco Hita Garcia, Ziv Lieberman, Cong Liu & Evan Economo
Discothyrea Roger, 1863 is a small genus of proceratiine ants with remarkable morphology and biology. However, due to cryptic lifestyle Discothyrea are poorly represented in museum collections and their taxonomy has been severely neglected. We perform the first comprehensive revision of Discothyrea in the Afrotropical region through a combination of traditional and 3D cybertaxonomy based on micro-CT. Species diagnostics and morphological character evaluations are based on examinations of all physical specimens and virtual analyses of...

Data from: A key metabolic gene for recurrent freshwater colonization and radiation in fishes

Asano Ishikawa, Naoki Kabeya, Koki Ikeya, Ryo Kakioka, Jennifer N. Cech, Naoki Osada, Miguel C. Leal, Jun Inoue, Manabu Kume, Atsushi Toyoda, Ayumi Tezuka, Atsushi J. Nagano, Yo Y. Yamasaki, Yuto Suzuki, Tomoyuki Kokita, Hiroshi Takahashi, Kay Lucek, David Marques, Yusuke Takehana, Kiyoshi Naruse, Seiichi Mori, Oscar Monroig, Nemiah Ladd, Carsten J. Schubert, Blake Matthews … & Jun Kitano
Colonization of new ecological niches has triggered large adaptive radiations. Although some lineages have made use of such opportunities, not all do so. The factors causing this variation among lineages are largely unknown. Here, we show that deficiency in docosahexaenoic acid (DHA), an essential ω-3 fatty acid, can constrain freshwater colonization by marine fishes. Our genomic analyses revealed multiple independent duplications of the fatty acid desaturase gene Fads2 in stickleback lineages that subsequently colonized and...

Evolution of a multifunctional trait: shared effects of foraging ecology and thermoregulation on beak morphology, with consequences for song evolution

Nicholas R. Friedman, Eliot T. Miller, Jason R. Ball, Haruka Kasuga, Vladimír Remeš & Evan P. Economo
While morphological traits are often associated with multiple functions, it remains unclear how evolution balances the selective effects of different functions. Birds' beaks function in foraging, but also in thermoregulating and singing, among other behaviours. Studies of beak evolution abound, however most focus on a single function. Thus, we quantified relative contributions of different functions over an evolutionary time scale. We measured beak shape using geometric morphometrics and compared this trait to foraging behaviour, climatic...

Registration Year

  • 2019

Resource Types

  • Dataset


  • Okinawa Institute of Science and Technology
  • Gifu Kyoritsu University
  • Fred Hutchinson Cancer Research Center
  • Swiss Federal Institute of Aquatic Science and Technology
  • Ryukoku University
  • Australian National University
  • Fukui Prefectural University
  • Hokkaido University
  • Spanish National Research Council
  • National Institute of Genetics