Department Systems Analysis, Integrated Assessment and Modelling

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   0 => Snowflake\Publications\Domain\Model\Publicationprototypepersistent entity (uid=31835, pid=124)
      originalId => protected31835 (integer)
      authors => protected'Lavender, E.; Hunziker, Y.; McLennan, D.; Dermond, P.; S
         talder, D.; Selz, O.; Brodersen, J.' (126 chars)
      title => protected'Sex‐ and length‐dependent variation in migratory propensity in brown tro
         ut' (78 chars)
      journal => protected'Ecology of Freshwater Fish' (26 chars)
      year => protected2023 (integer)
      volume => protected23 (integer)
      issue => protected'1' (1 chars)
      startpage => protected'e12745 (12 pp.)' (15 chars)
      otherpage => protected'' (0 chars)
      categories => protected'migration; passive telemetry; potamodromy; predation-growth trade-off; Salmo
          trutta; sdY gene' (93 chars)
      description => protected'In partially migratory species, individuals either migrate at some point(s) 
         in life or reside within their natal habitat throughout life. For salmonid f
         ish, migration creates opportunities for feeding and growth, but it is also 
         associated with increased mortality risk. Such trade-offs likely differ betw
         een the sexes, since reproductive output is more closely tied to body size i
         n females than males. However, testing hypotheses on sex-specific migratory 
         behaviour in would-be first-time migratory salmonids is difficult, since sex
         es are generally morphologically indistinguishable prior to maturation. Prev
         ious studies have evaluated the influence of sex on migration based on disse
         ction of migratory juveniles or the sex ratio of returning adults. However, 
         both approaches are potentially biased by differential survival during migra
         tion. Here, we utilise advances in minimally invasive genetic sex-determinat
         ion methods for salmonids to investigate sex-specific, spring out-migration 
         propensity in potamodromous brown trout (<em>Salmo trutta</em>) in a pre-Alp
         ine, central European lake. We show that there are marked differences in mig
         ratory behaviour between males and females, with small (~10 cm) females be
         ing approximately twice as likely to migrate out of their natal river in spr
         ing compared to similarly sized males, which generally migrate for the first
          time at larger sizes (in similar proportions to larger females). This study
          highlights how novel genetic sex-determination techniques can provide insig
         ht into the sex- and size-specific life-history trade-offs that shape migrat
         ion propensity. Moving forward, these techniques should become useful tools 
         for ecologists and fisheries managers.' (1710 chars)
      serialnumber => protected'0906-6691' (9 chars)
      doi => protected'10.1111/eff.12745' (17 chars)
      uid => protected31835 (integer)
      _localizedUid => protected31835 (integer)modified
      _languageUid => protectedNULL
      _versionedUid => protected31835 (integer)modified
      pid => protected124 (integer)