Disentangling the potential effects of four non-indigenous species on commercially and recreationally used fish stocks in the Baltic Sea—a review

Biological Invasions, Journal Year: 2025, Volume and Issue: 27(2)

Published: Jan. 29, 2025

Language: Английский

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Small but Mighty: The Round Goby (Neogobius melanostomus) as a Model Species of Biological Invasions

Diversity, Journal Year: 2023, Volume and Issue: 15(4), P. 528 - 528

Published: April 6, 2023

Invasive “game-changer” species cause severe ecological impacts such as “phase shifts” in recipient ecosystems all over the world. Since early 1990s, ongoing global spread of small but highly invasive Ponto-Caspian round goby Neogobius melanostomus into diverse freshwater and marine has been observed. We postulate that this is an ideal model to better understand mitigate aquatic invasions. Its wide invaded range, well its on native species, have triggered a large body research worldwide concerning spread, ecology, traits facilitating invasion. Several hypotheses related invasiveness tested for goby, which are also applicable other understanding general principles invasion biology. However, common theory explaining success, especially still lacking. Many case studies do not consider time since use different sampling protocols methodologies, hampering comparability results conclusions. thus propose strengthening network researchers establishing long-term databases based continuous harmonized monitoring covering stages process crucial requirements manage In many cases, can easily be integrated existing survey schemes.

Language: Английский

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How does round goby (Neogobius melanostomus) affect fish abundance in the Swedish coastal areas of the Baltic Sea?

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(2), P. e0316546 - e0316546

Published: Feb. 24, 2025

Quantifying the effects of species invasions is particularly challenging, as it requires accurate measurements ecosystem before and after invasion. The round goby ( Neogobius melanostomus ), a highly successful invasive from Ponto-Caspian region, has had significant ecological impacts on native communities in invaded ecosystems. However, there are currently no studies examining impact invasion abundance coastal fish Baltic Sea. Using 17–23 years monitoring data four areas, we quantified changes (mostly representing indicators key species) associated with Swedish areas. A generalized additive mixed model suggests that will lead to an increase perch, cyprinids, piscivores, ruffe, while whitefish flounder decrease. In addition, sprat herring may not be affected by Abundance flounder, perch ≥20 cm total length), cod, pikeperch, pike were increased water temperature decreased depth wave exposure. We observed decreasing trend whitefish, sprat, decrease depth. Given low several piscivorous Sea role predators control exotic prey, reinforcing piscivore populations might useful for regulating at local scale.

Language: Английский

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Variations of salinity during reproduction and development affect ontogenetic trajectories in a coastal amphibian

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(8), P. 11735 - 11748

Published: Jan. 15, 2024

Language: Английский

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Invader at the edge — Genomic origins and physiological differences of round gobies across a steep urban salinity gradient

Evolutionary Applications, Journal Year: 2022, Volume and Issue: 16(2), P. 321 - 337

Published: June 20, 2022

Species invasions are a global problem of increasing concern, especially in highly connected aquatic environments. Despite this, salinity conditions can pose physiological barriers to their spread, and understanding them is important for management. In Scandinavia's largest cargo port, the invasive round goby (Neogobius melanostomus) established across steep gradient. We used 12,937 SNPs identify genetic origin diversity three sites along gradient from western, central northern Baltic Sea, as well north European rivers. Fish two extreme ends were also acclimated freshwater seawater, tested respiratory osmoregulatory physiology. high-salinity environment outer port showed higher diversity, closer relatedness other regions, compared fish lower upstream river. site had maximum metabolic rate, fewer blood cells Ca2+. these genotypic phenotypic differences, acclimation affected both same way: seawater increased osmolality Na+ levels, levels stress hormone cortisol. Our results show differences over short spatial scales this These patterns physiologically robust likely driven by multiple introductions into site, process sorting, based on behaviour or selection, This euryhaline risks spreading area, seascape genomics characterization inform management strategies even within an area small coastal harbour inlet.

Language: Английский

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Some like it salty: Spatio‐temporal dynamics of salinity differentially affect anurans and caudates in coastal wetlands

Freshwater Biology, Journal Year: 2023, Volume and Issue: 68(7), P. 1279 - 1292

Published: May 15, 2023

Abstract Coastal wetlands are naturally subjected to salinity, which is expected increase through global climate changes. Most species will be affected by these changes, leading major consequences for community structure and ecosystem functioning. We investigated variation of salinity temporary across spatial (1,000 m from the ocean) temporal (across three breeding season) scales relevant coastal biodiversity used amphibians (six species, sampled one as a model investigate spatio‐temporal in 24 ponds situated on Atlantic coast France. show that highly dynamic environmental variable varies widely both scales. The dynamics critical factor structuring amphibian communities affect main phylogenetic groups (caudates vs. anurans) differently. Temporal disrupts match between selected reproductive adults those experienced later their developing offspring, negatively success. Future changes likely functioning ecosystems, excluding salt‐intolerant eventually less diverse salt‐tolerant species.

Language: Английский

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Ancestral Sperm Ecotypes Reveal Multiple Invasions of a Non-Native Fish in Northern Europe

Cells, Journal Year: 2021, Volume and Issue: 10(7), P. 1743 - 1743

Published: July 9, 2021

For externally fertilising organisms in the aquatic environment, abiotic fertilisation medium can be a strong selecting force. Among bony fishes, sperm are adapted to function narrow salinity range. A notable exception is family Gobiidae, where several species reproduce across wide The also contains wide-spread invasive species. To better understand how these fishes tolerate such varying conditions, we measured performance relation from freshwater and brackish population within their ancestral Ponto-Caspian region of round goby, Neogobius melanostomus. These two populations were then compared nine additional invaded sites northern Europe, both terms traits by using genomic SNP markers. Our results show clear patterns adaptations salinities performance. Population analyses that ecotypes have generally established themselves environments fit adaptations. Sites close ports with intense shipping outbreeding admixture affect given salinity. Rapid adaptation local conditions supported at some sites. Historical contemporary evolution goby cells tightly linked seascape genomics as well biogeographic processes fishes. Since risk establishing an area related genotype environment match, port connectivity ancestry likely useful for predicting spread.

Language: Английский

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Molecular, behavioural and morphological comparisons of sperm adaptations in a fish with alternative reproductive tactics

Evolutionary Applications, Journal Year: 2022, Volume and Issue: 16(2), P. 338 - 353

Published: June 21, 2022

In species with alternative reproductive tactics, there is much empirical support that parasitically spawning males have larger testes and greater sperm numbers as an evolved response to a higher degree of competition, but for performance (motility, longevity speed) by such inconsistent. We used the sand goby (Pomatoschistus minutus) test whether differed between breeding-coloured (small testes, large mucus-filled sperm-duct glands; build nests lined sperm-containing mucus, provide care) parasitic sneaker-morph (no breeding colouration, rudimentary no nest, care). compared motility (per cent motile sperm), velocity, sperm, gene expression morphometrics two morphs. also tested if gland contents affected performance. found clear difference in male morphs 109 transcripts differentially expressed Notably, several mucin genes were upregulated ATP-related males. There was partial evidence velocity males, motility. Presence significantly increased nonsignificantly tended increase motility, equally so The has remarkably long-lived only small or decline over time (5 min vs. 22 h), again, this true both Sperm length (head, flagella, total flagella-to-head ratio) did not differ correlate either morph. Thus, other than expression, we modest differences morphs, confirming previous findings adaptation competition primary target evolution.

Language: Английский

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Identifying high-risk areas for introduction of new alien species: the case of the invasive round goby, a door-knocker for Norway

Hydrobiologia, Journal Year: 2022, Volume and Issue: 849(10), P. 2377 - 2394

Published: April 22, 2022

Abstract Identifying new areas of colonisation by alien species is important for early detection and management. Door-knocker pose problems traditional predictive models because lacking presence–absence data, but habitat suitability modelling might overcome this. We here identify the most likely introduction first establishment invasive round goby Neogobius melanostomus to Norway, where it has not yet been registered. implemented knowledge on dispersal pathways species’ biology in a simplified model based spatial data representing relevant environmental variables: distance international harbours closest population neighbouring country, salinity, wave exposure, depth water temperature. The results suggest that there are many potential localities reveal several hotspots such areas, especially less-exposed coastal brackish southern Norway. Especially region around Oslo Fjord stands out as being associated with higher risk. Our could guide future monitoring programmes increase chance this invader. study illustrates how analyses can be used invasion an aquatic door-knocker despite data.

Language: Английский

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A test for plasticity in sperm motility activation in response to osmotic environment in an anuran amphibian

Ecology and Evolution, Journal Year: 2022, Volume and Issue: 12(10)

Published: Oct. 1, 2022

Abstract Evolutionary theory predicts that selection will favor phenotypic plasticity in sperm traits maximize fertilization success dynamic environments. In species with external fertilization, osmolality of the medium is known to play a critical role activating motility, but evidence for osmotic‐induced limited euryhaline fish and marine invertebrates. Whether this capacity extends freshwater taxa remains unknown. Here, we provide first test sperm‐motility activation response osmotic environment an anuran amphibian. Male common eastern froglets ( Crinia signifera ) were acclimated either low (0 mOsmol kg −1 or high (50 environmental osmolality, using split‐sample experimental design, activated across range treatments (0, 25, 50, 75, 100, 200 ± 2 ). Unexpectedly, there was no detectable shift optimal after approximately 13 weeks acclimation (a period reflecting duration winter breeding season). However, both treatments, mirrored at natural site, indicating match local environment. Previously it has been shown C. display among‐population covariation between performance. Coupled finding, results present study suggest inter‐population differences reflect genetic divergence adaptation. We discuss need tests more better understand evolutionary contexts favoring adaptive activation.

Language: Английский

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