Ocean acidification but not elevated spring warming threatens a European seas predator

Alter, Katharina; Peck, Myron A.

doi:10.1016/j.scitotenv.2021.146926

Cited by 9 publications

(2 citation statements)

References 79 publications

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“…In this study, because all eggs from all females within one spawning time were fertilized with milt from the same group of males, the lower fertilization success of the eggs (which were also relatively small) from one early spawner could be caused by genetic differences of this and other females. On the contrary, egg mortality observed in the present study occurred predominantly during the mid‐blastula stage, similar to several other fish populations in the Baltic Sea (Alter & Peck, 2021; Dahlke et al ., 2016; Laine & Rajasilta, 1999). The blastula life stage is the period during which maternal‐to‐zygotic transition takes place and when embryos start to produce their own mRNA (Hill & Johnston, 1997; Tadros & Lipshitz, 2009).…”

Section: Discussionsupporting

confidence: 91%

Disentangling seasonal from maternal effects on egg characteristics in western Baltic spring‐spawning herring Clupea harengus

Huang¹,

Alter

Polte³

et al. 2022

Journal of Fish Biology

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In marine fishes, the timing of spawning determines the environment offspring will face and, therefore, the chances of early life stage survival. Different waves of Atlantic herring Clupea harengus spawn throughout spring in the western Baltic Sea, and the survival of offspring from early in the season has been low in the most recent decade. The authors assessed changes in egg traits from early, middle and late phases of the spawning season to examine whether seasonal and/or maternal effects influenced embryo survival. At each phase, fertilized eggs of six to eight females were incubated at two temperatures (7 and 13 C), and egg size, fertilization success, mortality and time to hatch were recorded. A compilation of data from 2017 to 2020 spawning seasons indicated that mean total length of females decreased with progression of the season and increasing in situ water temperature. For the sub-set of females used in the laboratory study, early spawners were 7.6% larger and produced 14.2% larger eggs than late-spring spawners.Fertilization success was consistently high (>90%), and mortality to hatch was low (<3%).Neither the former nor latter were influenced by season, but both were influenced by maternity. This significant female effect was, however, not related to any maternal trait measured here (total length, Fulton's condition factor or age). There was no maternal effect on development rate at 7 or 13 C. The results suggest that intrinsic differences among females or among spawning waves are unlikely to markedly contribute to the poor survival observed for progeny from early in the season in this population and point towards other extrinsic factors or processes acting on eggs or early larval stages (e.g., seasonal match-mismatch dynamics with prey) as more likely causes of mortality.

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Section: Discussionsupporting

confidence: 91%

Disentangling seasonal from maternal effects on egg characteristics in western Baltic spring‐spawning herring Clupea harengus

Huang¹,

Alter

Polte³

et al. 2022

Journal of Fish Biology

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“…The rate of temperature change used here was chosen to be the same as other studies conducted in the "CLIMAR" research program examining the effects of warming and ocean acidification on the thermal tolerance of a range of species living in different marine habitats (e.g. Manríquez et al, 2020;Alter and Peck, 2021). Fast heating rates tend to produce higher CTmax values, though the same is not necessarily valid for cooling rates and CTmin (Kovacevic et al, 2019).…”

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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Combined effects of ocean warming and acidification on marine fish and shellfish: A molecule to ecosystem perspective

Baag

Mandal

2022

Science of The Total Environment

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Ocean acidification but not elevated spring warming threatens a European seas predator

Cited by 9 publications

References 79 publications

Disentangling seasonal from maternal effects on egg characteristics in western Baltic spring‐spawning herring Clupea harengus

Disentangling seasonal from maternal effects on egg characteristics in western Baltic spring‐spawning herring Clupea harengus

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

Combined effects of ocean warming and acidification on marine fish and shellfish: A molecule to ecosystem perspective

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