5 Works

Data from: Highly masculinized and younger males attain higher reproductive success in a social rodent

Loreto A. Correa, Cecilia León, Juan Ramírez-Estrada, Alvaro Ly-Prieto, Sebastian Abades, Loren D. Hayes, Mauricio Soto-Gamboa & Luis A. Ebensperger
Abstract: Alternative morphotypes have been reported in males of different taxa. In some mammals highly masculinized and slightly masculinized males represent two opposite ends along a gradient of phenotypic variation in males. This phenotypical gradient originates during prenatal development. Laboratory studies have documented how highly and slightly masculinized males differ in several traits, including their reproductive success. However, the extent to which these reported differences materialize in natural populations remains unknown. We quantified the impact...

Data from: Testing the effects of heterozygosity on growth rate plasticity in the seaweed Gracilaria chilensis (Rhodophyta)

Cristobal F. Gallegos Sanchez, Jessica Beltrán, Verónica Flores, Alejandra V. González & Bernabé Santelices
Heterozygosity has been positively associated with fitness and population survival. However, the relationship between heterozygosity and adaptive phenotypic plasticity (i.e., plasticity which results in fitness homeostasis or improvement in changing environments), is unclear and has been poorly explored in seaweeds. In this study, we explored this relationship in the clonal red seaweed, Gracilaria chilensis by conducting three growth rate plasticity experiments under contrasting salinity conditions and by measuring heterozygosity with five microsatellite DNA markers. Firstly,...

Data from: Genetic structure of introduced American mink (Neovison vison) in Patagonia: colonisation insights and implications for control and management strategies

Mónica Mora, Gonzalo Medina-Vogel, Maximiliano A. Sepúlveda, Daly Noll, Rocío Álvarez-Varas & Juliana A. Vianna
Context: Biological invasions have caused dramatic changes in native biodiversity and ecosystem function. Studies of genetic variation and evolutionary changes are useful for understanding population dynamics during biological invasions, and shed light on management, prevention and restoration strategies. Aims: This study aimed to investigate the structure and genetic variability of American mink (Neovison vison), an invasive species in southern South America, introduced for fur farming in the 1930s. Methods: Samples from 153 mink were obtained...

Data from: Fluctuating thermal environments and time-dependent effects on fruit fly egg-hatching performance

Grisel Cavieres, Jose M. Bogdanovich, Paloma Toledo & Francisco Bozinovic
Organismal performance in a changing environment is dependent on temporal patterns and duration of exposure to thermal variability. We experimentally assessed the time-dependent effects of thermal variability (i.e. patterns of thermal exposure) on the hatching performance of Drosophila melanogaster. Flies were collected in central Chile and maintained for four generations in laboratory conditions. Fourth generation eggs were acclimated to different thermal fluctuation cycles until hatching occurred. Our results show that the frequency of extreme thermal...

Data from: Asymmetric competitive effects during species range expansion: an experimental assessment of interaction strength between ‘equivalent’ grazer species at their range overlap

Moises A. Aguilera, Nelson Valdivia, Stuart Jenkins, Sergio A. Navarrete & Bernardo Broitman
1. Biotic interactions are central to the development of theory and concepts in community ecology; experimental evidence has shown their strong effects on patterns of population and community organization and dynamics over local spatial scales. The role of competition in determining range limits and preventing invasions at biogeographic scales is more controversial, partly because of the complexity of processes involved in species colonization of novel habitats and the difficulties in performing appropriate manipulations and controls....

Registration Year

  • 2018
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Resource Types

  • Dataset
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Affiliations

  • Pontifical Catholic University of Chile
    5
  • University Austral de Chile
    2
  • Bangor University
    1
  • University of Tennessee at Chattanooga
    1
  • Universidad Mayor
    1
  • Andrés Bello University
    1
  • Catholic University of the North
    1
  • University of Chile
    1