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Auteur (up) Javidpour, J.; Molinero, J.-C.; Ramirez-Romero, E.; Roberts, P.; Larsen, T. doi  openurl
  Titre Cannibalism makes invasive comb jelly, Mnemiopsis leidyi, resilient to unfavourable conditions Type Article scientifique
  Année 2020 Publication Revue Abrégée Commun. Biol.  
  Volume 3 Numéro 1 Pages  
  Mots-Clés black-sea; ctenophore mnemiopsis; evolution; growth; impact; kiel fjord; mechanisms; population-dynamics; predation; rates  
  Résumé The proliferation of invasive marine species is often explained by a lack of predators and opportunistic life history traits. For the invasive comb jelly Mnemiopsis leidyi, it has remained unclear how this now widely distributed species is able to overcome long periods of low food availability, particularly in their northernmost exotic habitats in Eurasia. Based on both field and laboratory evidence, we show that adult comb jellies in the western Baltic Sea continue building up their nutrient reserves after emptying the prey field through a shift to cannibalizing their own larvae. We argue, that by creating massive late summer blooms, the population can efficiently empty the prey field, outcompete intraguild competitors, and use the bloom events to build nutrient reserves for critical periods of prey scarcity. Our finding that cannibalism makes a species with typical opportunistic traits more resilient to environmental fluctuations is important for devising more effective conservation strategies. Javidpour et al. use high-frequency field data, geochemical-isotopic analysis, and modeling of prey-predator dynamics of the comb jelly in the western Baltic Sea to show that adult comb jellies cannibalize their own larvae. This shift to cannibalism allows adults to build nutrient reserves for periods of prey scarcity and sheds light on the ability of this invasive species to thrive amidst environmental fluctuations.  
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  Langue English Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
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  ISSN ISBN Médium  
  Région Expédition Conférence  
  Notes WOS:000533893600001 Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2788  
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