Experimental study of species invasion: early population dynamics and role of disturbance in invasion success

Reznick, David N.; Bona, Sebastiano De; López‐Sepulcre, Andrés; Torres, Mauricio; Bassar, Ronald D.; Benzen, Paul; Travis, Joseph

doi:10.1002/ecm.1413

Cited by 7 publications

(8 citation statements)

References 87 publications

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“…If we focus on the brackish component of the zooplankton, the initial community of the inner zone of the estuary of Bilbao was less complex and diverse than that of the inner estuary of Urdaibai, the latter being dominated by the brackish species A. bifilosa (Barroeta et al 2020), and therefore, it may be inferred that the lack of true estuarine competitors rather than the presence of a diverse neritic community determined the invasion success in the estuary. As the lack of typically brackish copepod species in the initial period in the estuary of Bilbao is attributable to the previous environmental deterioration of the inner estuary (Uriarte et al 2016), our results are consistent with the refined version of the Elton's hypothesis which recognizes that habitat disturbances may facilitate invasions (Hobbs and Huenneke 1992;Reznick et al 2020).…”

Section: The Role Of Diversity and Community Structure Prior To The A...supporting

confidence: 86%

Impact of Colonizer Copepods on Zooplankton Structure and Diversity in Contrasting Estuaries

Barroeta

Villate

Uriarte

et al. 2022

Estuaries and Coasts

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The impact of the occurrence of the non-indigenous species (NIS) Acartia tonsa, Oithona davisae, and Pseudodiaptomus marinus and of the range-expanding copepods Acartia bifilosa and Calanipeda aquaedulcis on the structure and diversity of zooplankton communities was analyzed using 18 years (1998–2015) time series from the contrasting estuaries of Bilbao and Urdaibai (Basque coast, Bay of Biscay). Changes in the structure of communities were assessed by using multivariate analyses of taxa abundances and changes in diversity by using descriptors of alpha, beta, and gamma diversity. The most evident changes occurred at the upper reaches of the estuary of Bilbao, where an abundant and less diverse brackish community, dominated by the NIS, A. tonsa and O. davisae, succeeded a low abundance and more diverse community of neritic origin. The later establishment of C. aquaedulcis was linked to further changes in the structure of the community and a progressive increase in diversity. The seasonal pattern of diversity at the inner estuary and the beta diversity in the estuary were also significantly affected by the arrival of the NIS and C. aquaedulcis. In contrast, the original low diversity brackish community of the estuary of Urdaibai, clearly dominated by A. bifilosa, was far less affected by the arrival of the same copepod NIS, and A. bifilosa remained as the species best related to the changes in zooplankton structure and diversity in the brackish habitats of the estuary.

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Section: The Role Of Diversity and Community Structure Prior To The A...supporting

confidence: 86%

Impact of Colonizer Copepods on Zooplankton Structure and Diversity in Contrasting Estuaries

Barroeta

Villate

Uriarte

et al. 2022

Estuaries and Coasts

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“…Introduction reaches varied from 65 to 150 m in length with a pool:riffle ratio of 0.5 to 0.7. Further details on the introduction procedure and population growth can be found in Reznick et al (2020). Killifish Control reaches were upstream of the guppy Introduction reaches, above barrier falls that prevented further upstream movement of introduced guppies.…”

Section: Transplant and Sampling Proceduresmentioning

confidence: 99%

“…Guppies conspicuously concentrate in the larger, permanent pools (Fig. 1b-d;Reznick et al 2020). In contrast, killifish show far less bias in habitat use (Fraser and Gilliam 1995).…”

Section: Introductionmentioning

confidence: 98%

Differential habitat use and recruitment facilitate coexistence in a community with intraguild predation

Goldberg

Fraser

Lamphere

et al. 2021

Ecology

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Theory predicts that species engaged in intraguild predation (IGP) can only coexist under limited conditions, yet IGP is common in nature. Habitat complexity can promote coexistence by reducing encounter rates, but little information is known about the contribution of differential habitat use. We hypothesized that differential use of alternative habitats promotes coexistence of an intraguild (IG) predator and prey. We evaluated predictions of this hypothesis with an experimental introduction of an IG predator fish into four natural stream communities that previously contained only the IG prey fish. We monitored the development of this IGP over the course of four years to determine how each species used alternative stream habitats. The introduced species preferred pool habitats while the resident species was more evenly distributed across pools and riffles. The density of the resident decreased in the pool habitat preferred by the invader, accompanied by a local increase in the mean of the resident size distribution. Selective predation by the invader on hatchling residents appears to impact the residents' demographic response. The continued recruitment of resident juveniles in riffles, where the introduced species is rare, facilitated the persistence of the resident. This differential use of habitats was not accompanied by a change in the resident's growth rates in either habitat. Our results showed that differential habitat selection and recruitment promoted persistence during an invasion involving IGP, which helps to bridge the gap between theory and observation in explaining coexistence in IGP systems.

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“…Guppies inhabiting low-predation environments typically attain higher densities than high-predation populations [17], are strongly regulated [22] and have less and lower-quality resources available [23]. This means that competition for resources is likely to be stronger, and selectivity may be selected against.…”

Section: Discussionmentioning

confidence: 99%

“…In March 2008, as part of a larger study on eco-evolutionary feedbacks, 38 male and 38 female guppies from a high-predation site on the Guanapo River were introduced to the Lower La Laja, a guppy-free low-predation tributary [16,17]. The introduction site on the Lower La Laja is a 110 m reach bound by waterfalls that impede the movement of guppies upstream but not downstream.…”

Section: Methodsmentioning

confidence: 99%

Rapid evolution of diet choice in an introduced population of Trinidadian guppies

et al. 2023

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Eco-evolutionary theory has brought an interest in the rapid evolution of functional traits. Among them, diet is an important determinant of ecosystem structure, affecting food web dynamics and nutrient cycling. However, it is largely unknown whether diet, or diet preference, has a hereditary basis and can evolve on contemporary timescales. Here, we study the diet preferences of Trinidadian guppies Poecilia reticulata collected from directly below an introduction site of fish transplanted from a high-predation environment into a low predation site where their densities and competition increased. Behavioural assays on F2 common garden descendants of the ancestral and derived populations showed that diet preference has rapidly evolved in the introduced population in only 12 years (approx. 36 generations). Specifically, we show that the preference for high-quality food generally found in high-predation guppies is lost in the newly derived low-predation population, who show an inertia toward the first encountered food. This result is predicted by theory stating that organisms should evolve less selective diets under higher competition. Demonstrating that diet preference can show rapid and adaptive evolution is important to our understanding of eco-evolutionary feedbacks and the role of evolution in ecosystem dynamics.

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Experimental study of species invasion: early population dynamics and role of disturbance in invasion success

Abstract: Article type : Article Running Head: Early invasion population dynamics Experimental study of species invasion: early population dynamics and role of disturbance in invasion success

Cited by 7 publications

References 87 publications

Impact of Colonizer Copepods on Zooplankton Structure and Diversity in Contrasting Estuaries

Impact of Colonizer Copepods on Zooplankton Structure and Diversity in Contrasting Estuaries

Differential habitat use and recruitment facilitate coexistence in a community with intraguild predation

Rapid evolution of diet choice in an introduced population of Trinidadian guppies

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