Invasive brook trout disrupt the diel activity and aggregation patterns of native brown trout

Larranaga, Nicolas; Wallerius, Magnus Lovén; Guo, Haoyu; Johnsson, Jörgen I.

doi:10.1139/cjfas-2018-0110

Cited by 12 publications

(16 citation statements)

References 59 publications

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“…2a). All of these features correspond to the diagnostic characters of peled (Berg, 1948;Reshetnikov, 1980Reshetnikov, , 2002Vasil'eva, 2004;Kottelat and Freyhof, 2007). In contrast to the typical form, the specimens caught in the Kapchagai reservoir had no dark spots on their body The natural range of peled covers the rivers and lakes of the Russian Federation from the Mezen River in the west to the Kolyma River in the east.…”

Section: Resultssupporting

confidence: 56%

“…The studies were conducted on chilled fishes stored on ice for no longer than 3 days. For the morphological analysis of the fishes, we applied the systems of characters used to identify species in the correspond-ing orders and families (Berg, 1948;Reshetnikov, 1980;Vasil'eva, 2004;Kottelat and Freyhof, 2007). The following designations of the characters are used in the work: SL, standard body length; FL, fork length (to the middle caudal fin rays); W, total body weight; w, body weight without viscera; ll, number of perforated scales in the lateral line; D, A, P, V, and C, number of rays in dorsal, anal, pectoral, pelvic, and caudal fins, respectively; sp.br., number of gill rakers on the 1st gill arch; r.br., number of branchiostegal rays; pc, number of pyloric caeca; vert., total number of vertebrae.…”

Section: Methodsmentioning

confidence: 99%

“…The following designations of the characters are used in the work: SL, standard body length; FL, fork length (to the middle caudal fin rays); W, total body weight; w, body weight without viscera; ll, number of perforated scales in the lateral line; D, A, P, V, and C, number of rays in dorsal, anal, pectoral, pelvic, and caudal fins, respectively; sp.br., number of gill rakers on the 1st gill arch; r.br., number of branchiostegal rays; pc, number of pyloric caeca; vert., total number of vertebrae. For the number of branched rays of the dorsal and anal fins, the last two rays attached to one pterygophore were counted as 1½ (Kottelat and Freyhof, 2007). The age of the fishes was determined based on the scales and the last vertebrae of the thoracic region.…”

Section: Methodsmentioning

confidence: 99%

“…Currently, the problem of biological invasions of alien species has become one of the key issues in studies of various ecosystems. Biological invasions are recognized as one of the main threats to native species and natural ecosystems; therefore, ichthyologists pay great attention to issues related to the distribution of fish outside of their natural ranges (Strayer, 2010;Ricciardi and MacIsaac, 2011;Larranaga et al, 2019). The study of species in the new environment also broadens the understanding of their adaptive capabilities (Goryunova and Serov, 1954;Karpevich, 1975).…”

Section: Introductionmentioning

confidence: 99%

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Taxonomic Status of Four Rare Alien Fish Species of the Kapchagay Reservoir (Balkhash Basin, Central Asia)

et al. 2021

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Abstract— Based on the morphological features, four rare alien species in the Kapchagai reservoir were identified: Coregonus peled, Parasalmo mykiss, Megalobrama mantschuricus, and Oreochromis niloticus. The latter two species were recorded for the ichthyofauna of Kazakhstan for the first time. Self-reproducing P. mykiss populations have been known in the Balkhash Basin since the late 1990s, whereas the introduction of C. peled into the Ili basin in 1968−1969 and 1971 did not lead to the naturalization of the species. The reasons for the great diversity of invasive fish species in the Kapchagai reservoir are overviewed.

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Section: Resultssupporting

confidence: 56%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Taxonomic Status of Four Rare Alien Fish Species of the Kapchagay Reservoir (Balkhash Basin, Central Asia)

et al. 2021

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“…For instance, the presence of invasive bluegill Lepomis macrochirus and largemouth bass Micropterus salmoides was powerful enough to alter the normal behavioural patterns of the native Sacramento perch Archoplites interruptus and Cape galaxias Galaxias zebratus; the local inhabitants spent significantly more time under canopy cover, leading to the reduction in foraging and growth rates (Marchetti 1999;Shelton et al 2008). Similarly, a recent report highlighted the modification of vital behaviours, such as aggregation, diurnal activity patterns and food preference of the native brown trout Salmo trutta in the presence of the invasive brook trout Salvelinus fontinalis (Larranaga et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Can Living with an Alien Invasive Fish, Tilapia, Influence the Shoaling Decision-Making and Exploratory Behaviour of an Air-Breathing Freshwater Fish, the Climbing Perch?

Binoy

Ingle

Bhattacharya

et al. 2019

Preprint

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The biodiversity of freshwater aquatic ecosystems is threatened by invasive alien species across the world. We studied the impact of the presence of an invasive piscine species, the tilapia Oreochromis mossambicus and acquisition of familiarity with it on the social decision-making and exploratory behaviour of a native, air-breathing, freshwater fish, the climbing perch Anabas testudineus. Our results reveal that the climbing perch did not show any significant preference or aversion to any of the stimulus shoals when unfamiliar monospecific shoals of tilapia, mixed-species shoals of tilapia and climbing perch that were divergent in the composition, or groups comprising only tilapia familiar to the subject fish for a duration of 30, 60, 90 or 120 days, were presented in opposition to a shoal with an equal number of unfamiliar conspecific individuals. No preference for isolated familiar individual tilapia was also observed against its unfamiliar counterpart or a conspecific individual. It is also noteworthy that the propensity of subject climbing perch to initiate exploration of a novel area (a measure of boldness) or exploratory activity and its sociability remained unchanged under different social conditions, including presence of unfamiliar conspecific, familiar conspecific, unfamiliar heterospecific or familiar heterospecific individuals. These results are discussed in the light of ever-increasing levels of invasion by alien fish species and the struggle for survival that currently confront native piscine species in most tropical freshwater ecosystems globally.

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Linking omega-3 polyunsaturated fatty acids in natural diet with brain size of wild consumers

et al. 2022

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Omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA) are key structural lipids and their dietary intake is essential for brain development of virtually all vertebrates. The importance of n-3 LC-PUFA has been demonstrated in clinical and laboratory studies, but little is known about how differences in availability of n-3 LC-PUFA in natural prey in uence brain development of wild consumers. The numerous consumers foraging on the interface of aquatic and terrestrial food webs can differ substantially in their intake of n-3 LC-PUFA, which may lead to differences in brain development, yet, this hypothesis remains to be tested. Here we use the previously demonstrated shift towards higher reliance on n-3 LC-PUFA deprived terrestrial prey of native brown trout Salmo trutta living in sympatry with invasive brook trout Salvelinus fontinalis to explore this hypothesis. We found that the content of n-3 LC-PUFA in muscle tissues of brown trout decreased with increasing consumption of n-3 LC-PUFA deprived terrestrial prey.Brain volume was positively related to content of the n-3 LC-PUFA, docosahexaenoic acid, in muscle tissues of brown trout. Our study thus suggests that increased reliance on low quality diet of n-3 LC-PUFA deprived subsidies can have a signi cant negative impact on brain development of wild trout. Our ndings are important, because ongoing global change is predicted to reduce the availability of dietary n-3 LC-PUFA across food webs and we showed here a rst evidence of how brain of wild vertebrate consumers response to scarcity of n-3 LC-PUFA content in natural prey.

show abstract

Invasive brook trout disrupt the diel activity and aggregation patterns of native brown trout

Cited by 12 publications

References 59 publications

Taxonomic Status of Four Rare Alien Fish Species of the Kapchagay Reservoir (Balkhash Basin, Central Asia)

Taxonomic Status of Four Rare Alien Fish Species of the Kapchagay Reservoir (Balkhash Basin, Central Asia)

Can Living with an Alien Invasive Fish, Tilapia, Influence the Shoaling Decision-Making and Exploratory Behaviour of an Air-Breathing Freshwater Fish, the Climbing Perch?

Linking omega-3 polyunsaturated fatty acids in natural diet with brain size of wild consumers

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