Trophic dynamics within a hybrid zone - interactions between an abundant cyprinid hybrid and sympatric parental species

Hayden, Brian; Massa-Gallucci, Alexia; Caffrey, Joe; Harrod, Chris; Mariani, Stefano; O'Grady, M. F.; Kelly‐Quinn, Mary

doi:10.1111/j.1365-2427.2011.02604.x

Cited by 21 publications

(29 citation statements)

References 61 publications

(65 reference statements)

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“…As intermediate hybrid body shape was significantly correlated with diet composition, it may have resulted in the utilization of a broader trophic niche in comparison with the parental species (Toscano et al, 2010). Additionally, the hybrids exhibited greater flexibility in their diet composition (Hayden et al, 2011b). This generalist trophic flexibility may allow a fish to exploit a broad range of trophic resources, be less sensitive to fluctuations in the availability of particular food categories and achieve rapid growth (Hayden et al, 2014b).…”

Section: Head Lengthmentioning

confidence: 99%

Genetic composition of a population of natural common bream Abramis brama × roach Rutilus rutilus hybrids and their morphological characteristics in comparison with parent species

Konopiński

Amirowicz

2017

Journal of Fish Biology

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Common bream Abramis brama, roach Rutilus rutilus and their hybrids were collected in the Dobczyce Reservoir in southern Poland in 2006-2013 to study whether it is better for a hybrid individual to resemble and compete with one of its parents, or to minimize competition by having a distinctive phenotype. All hybrids were F crosses and originated predominantly (93·2%) from matings between female A. brama and male R. rutilus parents. In morphometric analyses, a newly defined coefficient, L = 2·5 (body mass) (L × body depth) , which enables forms with similar length-depth proportions but different length-mass relationships to be distinguished was used. Morphometric and meristic characteristics of the hybrids were intermediate in comparison with the parental species, with small but significant deviation towards R. rutilus in longitudinal body dimensions (trunk and tail length) and towards A. brama in body cross-sectional shape (body depth and L coefficient). This may result in a more R. rutilus like propulsion in hybrids and a more A. brama like ability to manoeuvre.

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Section: Head Lengthmentioning

confidence: 99%

Genetic composition of a population of natural common bream Abramis brama × roach Rutilus rutilus hybrids and their morphological characteristics in comparison with parent species

Konopiński

Amirowicz

2017

Journal of Fish Biology

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“…Rutilus rutilus can vary their diet over a short or longer period without affecting their growth, allowing fish to achieve the earliest possible maturation regardless of their diet. It is worth noting, however, that prey resources are unlikely to be limiting in the study lakes (Hayden et al , ). Consequently, growth may not be directly related to diet in these lakes, as prey were readily available in all systems.…”

Section: Discussionmentioning

confidence: 99%

Trophic flexibility by roach Rutilus rutilus in novel habitats facilitates rapid growth and invasion success

Hayden

Massa-Gallucci

Harrod

et al. 2014

Journal of Fish Biology

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Stable isotope and gut content analyses, in conjunction with backcalculated length-at-age estimates of growth, were employed to examine the relationship between trophic ecology and growth rate of a successful invader, Rutilus rutilus, in eight lakes in Ireland. The data revealed that R. rutilus was a trophic generalist in Irish lakes. It utilized a greater proportion of pelagic resources in mesotrophic lakes than in eutrophic lakes, potentially due to a greater density of benthic macroinvertebrates in eutrophic systems. The species was characterized by a large dietary and isotopic niche width and high temporal and spatial variations in diet. Growth rates were typical of those found in the native range of the species and were unrelated to either lake productivity or fish's diet. A generalist trophic ecology confers significant advantages on an invasive species, allowing it to exploit a variety of novel resources and fluctuations in prey availability.

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“…Hybrid fitness is often taxa and location specific (Arnold, ). Hybrid individuals may exhibit traits that are intermediate to or different from the parental species (Hayden et al, , ) and variation in some traits can determine the success and effects of an invasive species. Behavioural differences among invasive species and their hybrids are important to consider as these differences may necessitate additional management actions (Lamer, Dolan, Petersen, Chick, & Epifanio, ; Lamer, Ruebuch, McClelland, Epifanio, & Sass, ) and, by increasing genetic variability within the hybrid complex, make the establishment and success of invasive species more likely (Forsman & Wennersten, ).…”

Section: Introductionmentioning

confidence: 99%

Early generation hybrids may drive range expansion of two invasive fishes

Coulter

Brey

Lamer³

et al. 2019

Freshwater Biology

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Introgressive hybridisation between two invasive species has the potential to contribute to their invasion success and provide genetic resiliency to rapidly adapt to new environments. Additionally, differences in the behaviour of hybrids may lead to deleterious ecosystem effects that compound any negative impacts of the invading parental species. Invasive silver carp (Hypophthalmichthys molitrix) and bighead carp (Hypophthalmichthys nobilis) provide an opportunity to evaluate how hybridisation may influence the behaviour, dispersal, and spread of an invasive species introgressive complex. In order to investigate the role hybrids may have in the invasion ecology of bigheaded carps, we examined the distribution, movements, and environmental cues for movement of two invasive fishes and their hybrids in the Illinois River (U.S.A.). Early generation hybrids (e.g. F1,F2, and first‐generation backcross individuals) composed a greater proportion of the population at the invasion front where abundances of bigheaded carp were low. A greater proportion of early hybrids passed through dams upstream towards the invasion front than did other hybrids and parental species. The movements and environmental cues for movement of late‐generation backcrosses (more genetically similar to parental genotype) were not different from the parental species with which they shared the most alleles. Although the direction of the relationship between movement and environment was sometimes different for the parental species and associated advanced generation hybrids, these results indicate that management for parental species will also affect most hybrids. Although early generation hybrids are rare, our results indicate they may disperse towards low‐density population zones (i.e. invasion fronts) or are produced at greater frequency in low‐density areas. These rare hybrids have the potential to produce a variety of unique genetic combinations that could result in more rapid adaptation of a non‐native population to their invaded range potentially facilitating the establishment of invasive species.

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Trophic dynamics within a hybrid zone - interactions between an abundant cyprinid hybrid and sympatric parental species

Cited by 21 publications

References 61 publications

Genetic composition of a population of natural common bream Abramis brama × roach Rutilus rutilus hybrids and their morphological characteristics in comparison with parent species

Genetic composition of a population of natural common bream Abramis brama × roach Rutilus rutilus hybrids and their morphological characteristics in comparison with parent species

Trophic flexibility by roach Rutilus rutilus in novel habitats facilitates rapid growth and invasion success

Early generation hybrids may drive range expansion of two invasive fishes

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