7 Works

Data from: High lability of sexual system over 250 million years of evolution in morphologically conservative tadpole shrimps

Thomas C. Mathers, Robert L. Hammond, Ronald A. Jenner, Thorid Zierold, Bernd Hänfling & Africa Gómez
Background: Sexual system is a key factor affecting the genetic diversity, population structure, genome structure and the evolutionary potential of species. The sexual system androdioecy -- where males and hermaphrodites coexist in populations -- is extremely rare, yet is found in three crustacean groups, barnacles, a genus of clam shrimps Eulimnadia, and in the order Notostraca, the tadpole shrimps. In the ancient crustacean order Notostraca, high morphological conservatism contrasts with a wide diversity of sexual...

Data from: Bird migratory flyways influence the phylogeography of the invasive brine shrimp Artemia franciscana in its native American range

Joaquín Muñoz, Francisco Amat, Andy J. Green, Jordi Figuerola & Africa Gómez
Since Darwin’s time, waterbirds have been considered an important vector for the dispersal of continental aquatic invertebrates. Bird movements have facilitated the worldwide invasion of the American brine shrimp Artemia franciscana, transporting cysts (diapausing eggs), and favouring rapid range expansions from introduction sites. Here we address the impact of bird migratory flyways on the population genetic structure and phylogeography of A. franciscana in its native range in the Americas. We examined the sequence variation for...

Data from: Cats in the forest: predicting habitat adaptations from humerus morphometry in extant and fossil Felidae (Carnivora)

Carlo Meloro, Julien Louys, Laura C. Bishop, Peter Ditchfield & Sarah Elton
Mammalian carnivores are rarely incorporated in paleoenvironmental reconstructions, largely because of their rarity within the fossil record. However, multivariate statistical modeling can be successfully used to quantify specific anatomical features as environmental predictors. Here we explore morphological variability of the humerus in a closely related group of predators (Felidae) to investigate the relationship between morphometric descriptors and habitat categories. We analyze linear measurements of the humerus in three different morphometric combinations (log-transformed, size-free, and ratio),...

Data from: Multiple global radiations in tadpole shrimps challenge the concept of ‘living fossils’

Thomas C. Mathers, Robert L. Hammond, Ronald A. Jenner, Bernd Haenfling & Africa Gomez
‘Living fossils’, a phrase first coined by Darwin, are defined as species with limited recent diversification and high morphological stasis over long periods of evolutionary time. Morphological stasis, however, can potentially lead to diversification rates being underestimated. Notostraca, or tadpole shrimps, are an ancient, globally distributed order of branchiopod crustaceans regarded as ‘living fossils’ because their rich fossil record dates back to the early Devonian and their morphology is highly conserved. Recent phylogenetic reconstructions have...

Data from: The direct effects of male-killer infection on fitness of ladybird hosts (Coleoptera: Coccinellidae)

Sherif Elnagdy, Mark Gardener, Lori-Jayne Lawson-Handley, L.-J. Lawson Handley & M. E. N. Majerus
Male-killing bacteria are common in insects, and are thought to persist in host populations primarily by indirect fitness benefits to infected females, while direct fitness effects are generally assumed to be neutral or deleterious. Here, we estimated the effect of male-killer infection on direct fitness (number of eggs laid, as a measure of fecundity, together with survival) and other life-history traits (development time and body size) in seven ladybird host/male-killer combinations. Effects of male-killers on...

Records of leaf damage caused by and parasitism of Cameraria ohridella in Britain in 2010 collected with a citizen science approach, plus validation of the data

M.J.O. Pocock & D.M. Evans
Records of leaf damage caused by and parasitism of Cameraria ohridella in Britain in 2010 collected with a citizen science approach as part of the Conker Tree Science citizen science project, plus validation of the data. Over 3500 people in Great Britain provided data at a national scale on an invasive insect (horse-chestnut leaf-mining moth, Cameraria ohridella Deschka & Dimic; Lepidoptera: Gracillariidae) in order to address two hypotheses. Specifically: (1) whether the levels of damage...

Data from: Origin and genetic diversity of diploid parthenogenetic Artemia in Eurasia

Marta Maccari, Francisco Amat & Africa Gómez
There is wide interest in understanding how genetic diversity is generated and maintained in parthenogenetic lineages, as it will help clarify the debate of the evolution and maintenance of sexual reproduction. There are three mechanisms that can be responsible for the generation of genetic diversity of parthenogenetic lineages: contagious parthenogenesis, repeated hybridization and microorganism infections (e.g. Wolbachia). Brine shrimps of the genus Artemia (Crustacea, Branchiopoda, Anostraca) are a good model system to investigate evolutionary transitions...

Registration Year

  • 2013
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Resource Types

  • Dataset
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Affiliations

  • University of Hull
    7
  • University of Leicester
    2
  • Centre for Ecology & Hydrology
    1
  • UK Centre for Ecology & Hydrology
    1
  • Institute of Aquaculture Torre de la Sal
    1
  • University of Cambridge
    1
  • Spanish National Research Council
    1
  • Natural History Museum
    1
  • The Open University
    1