5 Works

Data from: Tactic-specific differences in seminal fluid influence sperm performance

Lisa Locatello, Federica Poli & Maria B. Rasotto
Seminal fluid often makes up a large part of an ejaculate, yet most empirical and theoretical studies on sperm competition have focused on how sperm characteristics (number and quality) affect fertilization success. However, seminal fluid influences own sperm performance and may potentially influence the outcome of sperm competition, by affecting also that of rivals. As a consequence males may be expected to allocate their investment in both sperm and seminal fluid in relation to the...

Data from: Species and hybrid identification of sturgeon caviar: a new molecular approach to detect illegal trade

Elisa Boscari, Anna Barmintseva, Jose Martin Pujolar, P. Doukakis, Nikolai Mugue & Leonardo Congiu
Overexploitation of wild populations due to the high economic value of caviar has driven sturgeons to near extinction. The high prices commanded by caviar on world markets have made it a magnet for illegal and fraudulent caviar trade, often involving low-value farmed caviar being sold as top-quality caviar. We present a new molecular approach for the identification of pure sturgeon species and hybrids that are among the most commercialized species in Europe and North America....

Data from: Sturgeon conservation genomics: SNP discovery and validation using RAD sequencing

Rob Ogden, Karim Gharbi, Nikolai Mugue, Jann Martinsohn, Helen Senn, John Davey, Mohammad Pourkazemi, Ross McEwing, Cathlene Eland, Michele Vidotto, Alexander Sergeev, Leonardo Congiu & J. W. Davey
Caviar-producing sturgeons belonging to the genus Acipenser are considered to be one of the most endangered species groups in the world. Continued overfishing in spite of increasing legislation, zero catch quotas and extensive aquaculture production have led to the collapse of wild stocks across Europe and Asia. The evolutionary relationships among Adriatic, Russian, Persian and Siberian sturgeons are complex because of past introgression events and remain poorly understood. Conservation management, traceability and enforcement suffer a...

Data from: Evidence for past and present hybridization in three Antarctic icefish species provides new perspectives on an evolutionary radiation

Ilaria A. M. Marino, Andrea Benazzo, Cecilia Agostini, Massimo Mezzavilla, Sean M. Hoban, Tomaso Patarnello, Lorenzo Zane & Giorgio Bertorelle
Determining the timing, extent, and underlying causes of inter-specific gene exchange during or following speciation is central to understanding species’ evolution. Antarctic notothenioid fish, thanks to the acquisition of antifreeze glycoproteins during Oligocene transition to polar conditions, experienced a spectacular radiation to >100 species during Late Miocene cooling events. The impact of recent glacial cycles on this group is poorly known, but alternating warming and cooling periods may have affected species’ distributions, promoted ecological divergence...

Data from: Do unattractive friends make you look better? Context-dependent male mating preferences in the guppy

Clelia Gasparini, Giovanna Serena & Andrea Pilastro
Recent theory predicts that in species where females tend to mate with the relatively most ornamented males, males may increase their attractiveness to females, and hence mating success, by preferentially associating with females that are surrounded by less ornamented competitors. Despite this prediction, we still lack explicit experimental evidence that males strategically prefer females surrounded by less attractive competitors to maximise their relative attractiveness In this paper we provide a comprehensive test of this hypothesis...

Registration Year

  • 2013
    5

Resource Types

  • Dataset
    5

Affiliations

  • University of Padua
    5
  • All-Russian Research Institute Fisheries and Oceanography
    1
  • European Commission
    1
  • University of California, San Diego
    1
  • Aarhus University
    1
  • University of Edinburgh
    1
  • University of Trieste
    1
  • University of Ferrara
    1
  • Royal Zoological Society of Scotland
    1