Phenotypic shifts in white perch life history strategy across stages of invasion

Feiner, Zachary S.; Aday, D. Derek; Rice, James A.

doi:10.1007/s10530-012-0231-z

Cited by 50 publications

(52 citation statements)

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“…Variation in biological traits may provide an important advantage to invasive species, allowing successful transitions throughout the invasion process and favoring integration into the recipient ecosystem (Bøhn et al, 2004;Feiner et al, 2012). Especially, high morphological change has been attributed to pumpkinseed (Yavno et al, 2014), which together with variability in trophic niche composition and size recorded herein may enable this species to cope with the novel environments.…”

mentioning

confidence: 78%

Long term patterns in the late summer trophic niche of the invasive pumpkinseed sunfishLepomis gibbosus

Gkenas

Magalhães

Domingos

et al. 2016

Knowl. Manag. Aquat. Ecosyst.

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-Quantifying the trophic dynamics of invasive species in novel habitats is important for predicting the success of potential invaders and evaluating their ecological effects. The North American pumpkinseed sunfish Lepomis gibbosus is a successful invader in Europe, where it has caused negative ecological effects primarily through trophic interactions. Here, we quantified variations in the late summer trophic niche of pumpkinseed during establishment and integration in the mainstem of the Guadiana river, using stomach content analyses over a period of 40 years. Pumpkinseed showed a shift from trophic specialization during establishment to trophic generalism during integration. These results were concomitant with an increase in diet breadth that was accompanied by higher individual diet specialization particularly in large individuals. Irrespective of their drivers, these changes in trophic niche suggest that the potential ecological effects of pumpkinseed on recipient ecosystems can vary temporally along the invasion process.Key-words: invasive species / trophic niche / diet shift / diet breadth / individual diet specialization Résumé -Tendances à long terme de la niche trophique estivale de la perche soleil Lepomis gibbosus invasive. La quantification de la dynamique trophique des espèces envahissantes dans leur aire d'introduction est importante pour prédire leur succès d'invasion et évaluer leurs potentiels effets écologiques. La perche soleil − Lepomis gibbosus − est une espèce originaire d'Amérique du Nord qui a été largement introduite en Europe où elle induit des effets écologiques négatifs principalement par des interactions trophiques. Dans cette étude, nous avons quantifié les variations de niche trophique de la perche soleil en fin d'été pendant les phases d'établissement et d'intégration dans le cours principal de la rivière Guadiana (Portugal) en comparant des contenus stomacaux sur une période de 40 ans. Nos résultats ont permis de démontrer que la perche soleil a modifié son régime alimentaire durant cette période en passant d'un régime spécialiste pendant la phase d'établissement à un régime généraliste pendant la phase d'intégration. En parallèle, nous avons également observé une augmentation de la taille de la niche trophique de la population qui était accompagnée d'une augmentation de la spécialisation trophique individuelle, notamment chez les individus les plus grands. Indépendamment des causes induisant ces changements de niche trophique, nos résultats suggèrent donc que les effets écologiques potentiels de la perche soleil sur les écosystèmes aquatiques peuvent varier pendant le processus d'invasion biologique.Mots-clés : espèce envahissante / niche trophique / régime alimentaire / spécialisation trophique individuelle

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mentioning

confidence: 78%

Long term patterns in the late summer trophic niche of the invasive pumpkinseed sunfishLepomis gibbosus

Gkenas

Magalhães

Domingos

et al. 2016

Knowl. Manag. Aquat. Ecosyst.

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“…Therefore, variations in the life-history described in non-native N. melanostomus from the Danube appear to be a demonstration of the species' phenotypic plasticity. Life-history plasticity has been reported as "an important advantage to invasive species, allowing them to adapt for successful transitions throughout the invasion process, as well as to local conditions within the invaded system once they become fully integrated into established communities" (Feiner et al, 2012). Indeed, the theory of alternative ontogenies and invasive potential also postulates that a life-history that is advantageous at the beginning of the invasion, i.e.…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, previous studies focused on invasive N. melanostomus have revealed that this species has the capability to generate forms with life-history traits that are different between its native populations and its non-native populations (MacInnis and Corkum, 2000;L'avrinčíková and Kováč, 2007;Kováč et al, 2009). Changes in life-history traits, however, have not only been observed in N. melanostomus but in several other invasive fish species, too (Feiner et al, 2012;. Such observations, made on a range of species, pose the question whether the flexibility in life-history traits, associated with successful invasions, follows some rules with more general implications.…”

Section: Introductionmentioning

confidence: 99%

Different life-histories of native and invasiveNeogobius melanostomusand the possible role of phenotypic plasticity in the species’ invasion success

Hôrková

Kováč

2013

Knowl. Managt. Aquatic Ecosyst.

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Key-words:round goby, biological invasions, epigenesis, alternative ontogenies, reproductive parametersOne of the most successful invasive fish species with negative impacts is round goby Neogobius melanostomus that has spread from its original Ponto-Caspian area to west and central Europe and even to North America. Previous studies focused on invasive fishes have revealed that these species have the capability to generate forms with life-history traits that differ between native and non-native populations. As a contribution to explain their invasion success, the theory of alternative ontogenies and invasive potential has been developed. The main aim of the present study was to test the hypothesis derived from this theory, which predicts that females of the non-native population of N. melanostomus (from Slovakia) will have significantly smaller oocytes, higher fecundity and smaller body size at maturity than those of the native population (from Bulgaria). All the three quantitative parameters of life-history traits examined in this study were found to be consistent with the predictions tested. Variations in reproductive parameters observed in non-native N. melanostomus demonstrate the species' phenotypic plasticity, which appears to be an important attribute that helps potential invaders to establish new populations in unknown environments. However, further experimental studies are necessary to verify this theory by testing hypotheses derived from it. Une des espèces les plus envahissantes de poissons aux impacts négatifs est le gobie à taches noires Neogobius melanostomus qui s'est propagé à partir de sa zone ponto-caspienne native vers l'ouest et le centre de l'Europe et même en Amérique du Nord. Des études antérieures sur les poissons invasifs ont révélé que ces espèces ont la capacité de générer des individus avec des traits d'histoire de vie qui diffèrent entre les populations autochtones et non autochtones. En guise de contribution à expliquer leur succès d'invasion, la théorie des ontogenèses alternatives et du potentiel invasif a été développée. L'objectif principal de cette étude était de tester l'hypothèse dérivée de cette théorie, qui prédit que les femelles de la population non autochtone de N. melanostomus (de Slovaquie) auront de plus petits ovocytes, une plus forte fécondité et une plus petite taille à maturité que celles de la population autochtone (de Bulgarie). Tous les trois paramètres quantitatifs des traits d'histoire de vie examinés dans cette étude ont été jugés conformes aux prédictions testées. Les variations dans les paramètres de reproduction observés chez N. melanostomus non indigènes démontrent la plasticité phénotypique de l'espèce, qui semble être un attribut important qui aide les envahisseurs potentiels à établir de nouvelles populations dans des environnements inconnus. Toutefois, d'autres études expérimentales sont nécessaires pour vérifier cette théorie en testant des hypothèses qui en découlent. RÉSUMÉ

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“…These conditions produce strong evolutionary pressures favouring increased dispersal and population growth rates [16]. Although most systems in which these processes have been examined to date have involved range expansion in non-parasitic species [17][18][19][20], the same evolutionary forces should apply equally to parasitic species as they spread into a new environment (which for a parasite is a naive population of hosts) [21].…”

Section: Introductionmentioning

confidence: 99%

Do pathogens become more virulent as they spread? Evidence from the amphibian declines in Central America

Phillips

Puschendorf

2013

Proc. R. Soc. B.

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The virulence of a pathogen can vary strongly through time. While cyclical variation in virulence is regularly observed, directional shifts in virulence are less commonly observed and are typically associated with decreasing virulence of biological control agents through coevolution. It is increasingly appreciated, however, that spatial effects can lead to evolutionary trajectories that differ from standard expectations. One such possibility is that, as a pathogen spreads through a naive host population, its virulence increases on the invasion front. In Central America, there is compelling evidence for the recent spread of pathogenic Batrachochytrium dendrobatidis (Bd) and for its strong impact on amphibian populations. Here, we re-examine data on Bd prevalence and amphibian population decline across 13 sites from southern Mexico through Central America, and show that, in the initial phases of the Bd invasion, amphibian population decline lagged approximately 9 years behind the arrival of the pathogen, but that this lag diminished markedly over time. In total, our analysis suggests an increase in Bd virulence as it spread southwards, a pattern consistent with rapid evolution of increased virulence on Bd's invading front. The impact of Bd on amphibians might therefore be driven by rapid evolution in addition to more proximate environmental drivers.

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Phenotypic shifts in white perch life history strategy across stages of invasion

Cited by 50 publications

References 54 publications

Long term patterns in the late summer trophic niche of the invasive pumpkinseed sunfishLepomis gibbosus

Long term patterns in the late summer trophic niche of the invasive pumpkinseed sunfishLepomis gibbosus

Different life-histories of native and invasiveNeogobius melanostomusand the possible role of phenotypic plasticity in the species’ invasion success

Do pathogens become more virulent as they spread? Evidence from the amphibian declines in Central America

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