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Effect of hypoxia and acidification on metabolic rate of Ponto-Caspian gobies and their native competitors in the context of climate change.

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Názov: Effect of hypoxia and acidification on metabolic rate of Ponto-Caspian gobies and their native competitors in the context of climate change.
Autori: Kłosiński, Piotr1 (AUTHOR) klosinski.piotr@doktorant.umk.pl, Kobak, Jarosław2 (AUTHOR), Kakareko, Tomasz1 (AUTHOR)
Zdroj: Hydrobiologia. Jun2025, Vol. 852 Issue 11, p2787-2804. 18p.
Predmety: *GROUNDFISHES, *NATIVE species, *FRESHWATER fishes, *WATER acidification, *FISH communities
Abstrakt: Little is known about the non-thermal climate change factors (hypoxia and acidification) in the context of freshwater invasions. It is supposed that invasive Ponto-Caspian gobies have relatively wide environmental tolerance ranges due to their evolution in the highly variable environment of local limans and estuaries. Thus, we assumed that they better tolerate reduced oxygen and pH levels in invaded areas of Central and Western Europe compared to native species. Using a laboratory respirometry assay, we compared the effect of short-term progressive hypoxia and acidification on routine metabolic rate (RMR) of the invasive racer goby Babka gymnotrachelus and monkey goby Neogobius fluviatilis and their native counterparts sharing similar ecological niches (European bullhead Cottus gobio and gudgeon Gobio gobio, respectively). The natives displayed a lower hypoxia tolerance compared to the gobies (as changes in their RMR appeared at higher oxygen concentrations), whereas the monkey goby, but not the racer goby, appeared more tolerant to reduced pH than its native competitor. Thus, hypoxia tolerance seems to be a key feature shaping the invasive potential of the monkey and racer goby in benthic fish communities. However, the invasion success of the racer goby may be attenuated by progressing water acidification. [ABSTRACT FROM AUTHOR]
Databáza: Academic Search Index
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Abstrakt:Little is known about the non-thermal climate change factors (hypoxia and acidification) in the context of freshwater invasions. It is supposed that invasive Ponto-Caspian gobies have relatively wide environmental tolerance ranges due to their evolution in the highly variable environment of local limans and estuaries. Thus, we assumed that they better tolerate reduced oxygen and pH levels in invaded areas of Central and Western Europe compared to native species. Using a laboratory respirometry assay, we compared the effect of short-term progressive hypoxia and acidification on routine metabolic rate (RMR) of the invasive racer goby Babka gymnotrachelus and monkey goby Neogobius fluviatilis and their native counterparts sharing similar ecological niches (European bullhead Cottus gobio and gudgeon Gobio gobio, respectively). The natives displayed a lower hypoxia tolerance compared to the gobies (as changes in their RMR appeared at higher oxygen concentrations), whereas the monkey goby, but not the racer goby, appeared more tolerant to reduced pH than its native competitor. Thus, hypoxia tolerance seems to be a key feature shaping the invasive potential of the monkey and racer goby in benthic fish communities. However, the invasion success of the racer goby may be attenuated by progressing water acidification. [ABSTRACT FROM AUTHOR]
ISSN:00188158
DOI:10.1007/s10750-025-05794-5