Thermal responses of two sub-Antarctic notothenioid fishes, the black southern cod Patagonotothen tessellata (Richardson, 1845) and the Magellan plunderfish Harpagifer bispinis (Forster, 1801), from southern South America

Giménez, Eloísa Mariana; Barrantes, María Eugenia; Fernández, Daniel A.; Lattuca, María Eugenia

doi:10.1007/s00300-021-02852-1

Cited by 6 publications

(2 citation statements)

References 74 publications

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“…Moreover, E. maclovinus had a wider thermal tolerance than the sub-Antarctic notothenioids Harpagifer bispinis and Patagonotothen tessellata, also inhabiting the coastal waters of the Beagle Channel. According to Giménez et al (2021), TTWs of H. bispinis range between 25.57 and 27.02 ºC and those of P. tessellata range between 24.99 and 25.88 ºC in fish acclimated at 4 and 10 ºC, respectively.…”

Section: Discussionmentioning

confidence: 99%

Ocean acidification and seasonal temperature extremes combine to impair the thermal physiology of a sub-Antarctic fish

Lattuca

Vanella

Malanga

et al. 2023

Science of The Total Environment

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Section: Discussionmentioning

confidence: 99%

Ocean acidification and seasonal temperature extremes combine to impair the thermal physiology of a sub-Antarctic fish

Lattuca

Vanella

Malanga

et al. 2023

Science of The Total Environment

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“…One harpagiferid species, Harpagifer bispinis (Forster in Bloch and Schneider 1801), is found in the Magellan region of South America (Duhamel et al 2014), where summer ocean temperatures can exceed 11 °C. Although experimental fishes were acclimated to aquaria before trials, H. bispinis has a CTmax of 23.6 °C (Llompart et al 2020;Giménez et al 2021). Several harpagiferid species are also routinely found in shallow tide pools in the SPZ (Duarte and Moreno 1981;Casaux 1998;Eastman 2017), where temperatures can exceed 5 °C depending on sunlight intensity (Mintenbeck et al 2012;Clarke and Beaumont 2020).…”

Section: Artedidraconidsmentioning

confidence: 99%

Thermal tolerance of larval Antarctic cryonotothenioid fishes

Corso,

Mowatt-Larssen,

Brill

et al. 2024

Polar Biol

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Cryonotothenioids constitute a subgroup of notothenioid fishes endemic to the Southern Ocean that are specialized to exist in a narrow range of near-freezing temperatures. Due to the challenges of reliably collecting and maintaining larval cryonotothenioids in good condition, most thermal tolerance studies have been limited to adult and juvenile stages. With increasing environmental pressures from climate change in Antarctic ecosystems, it is important to better understand the impacts of a warming environment on larval stages as well. In this study, we determine the critical thermal maxima (CTmax) of cryonotothenioid larvae collected in pelagic net tows during three research cruises near the western Antarctic Peninsula. We sampled larvae of seven species representing three cryonotothenioid families—Nototheniidae, Channichthyidae, and Artedidraconidae. For channichthyid and nototheniid species, CTmax values ranged from 8.6 to 14.9 °C and were positively correlated with body length, suggesting that younger, less motile larvae may be especially susceptible to rapid warming events such as marine heatwaves. To our knowledge, this is the first published test of acute thermal tolerance for any artedidraconid, with CTmax ranging from 13.2 to 17.8 °C, which did not correlate with body length. Of the two artedidraconid species we collected, Neodraco skottsbergi showed remarkable tolerance to warming and was the only species to resume normal swimming following trials. We offer two hypotheses as to why N. skottsbergi has such an elevated thermal tolerance: (1) their unique green coloration serves as camouflage within near-surface phytoplankton blooms, suggesting they occupy an especially warm near-surface niche, and (2) recent insights into their evolutionary history suggest that they are derived from taxa that may have occupied warm tide-pool habitats. Collectively, these results establish N. skottsbergi and larval channichthyids as groups of interest for future physiological studies to gain further insights into the vulnerability of cryonotothenioids to a warming ocean.

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Temperature and salinity effects on whole-organism and cellular level stress responses of the sub-Antarctic notothenioid fish Patagonotothen cornucola yolk-sac larvae

Bruno

Barrantes

Lattuca

et al. 2022

Fish Physiol Biochem

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Thermal responses of two sub-Antarctic notothenioid fishes, the black southern cod Patagonotothen tessellata (Richardson, 1845) and the Magellan plunderfish Harpagifer bispinis (Forster, 1801), from southern South America

Cited by 6 publications

References 74 publications

Ocean acidification and seasonal temperature extremes combine to impair the thermal physiology of a sub-Antarctic fish

Ocean acidification and seasonal temperature extremes combine to impair the thermal physiology of a sub-Antarctic fish

Thermal tolerance of larval Antarctic cryonotothenioid fishes

Temperature and salinity effects on whole-organism and cellular level stress responses of the sub-Antarctic notothenioid fish Patagonotothen cornucola yolk-sac larvae

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