Egg predation in Antarctic fish: the ingestion by Notothenia coriiceps of an entire Trematomus bernacchii spawn identified by molecular techniques

Novillo, Manuel; Desvignes, Thomas; Moreira, Eugenia; Barrera-Oro, Esteban

doi:10.1016/j.ecss.2022.107742

Cited by 2 publications

(1 citation statement)

References 42 publications

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“…Calcium, being a pivotal component of snail shells, plays a crucial role; with a sufficient calcium supply, snails can utilize calcium more effectively for egg shell development and reinforcement, resulting in larger egg diameters 43 – 46 . The augmentation in egg size may serve as an adaptive response, making it more challenging for predators to prey on the larger eggs, as observed in other species like Diatraea saccharalis , Pomacentridae , and Trematomus bernacchii 47 – 49 . Nonetheless, further investigations are required to unveil the related mechanisms governing this phenomenon.…”

Section: Discussionmentioning

confidence: 98%

Ca2+ addition facilitates the shell repair with eggs production of Pomacea canaliculata through biomineralization and food intaking regulation

Chen,

Yao,

Zhang

et al. 2023

Sci Rep

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Pomacea canaliculata was by far one of the most harmful invasive organisms in the world, causing serious harm to aquatic crops and ecosystem. Calcium carbonate is a common component of aquatic environment, which is important for the growth of Pomacea canaliculata. Therefore, the objective of this study was to investigate the response characteristics of P. canaliculata suffered shell breakage to the addition of calcium carbonate in water environment. In this experiment, we explored the effects of calcium carbonate addition on the P. canaliculata shell repair rate, food intake, egg production, shell strength, and calcium content through breaking the snails shell and the addition of calcium carbonate treatment. The results showed that snail broken-shell repaired mostly within 21 days. The snails experienced a significant increase in shell repair rates during earlier days of the treatment, especially for female snails. Food intake of snails exhibited different patterns when their shells were broken and calcium carbonate was added. Shell breakage treatment combined with calcium carbonate addition significantly increased the diameter of snail eggs compared with the control and the calcium carbonate addition treatment without shell-broken snail group. There was no significant difference in shell strength or calcium content of male snails between the treatments. The study suggests that P. canaliculata exhibits a sex-dependent response pattern when subjected to shell damage and calcium carbonate addition. The findings can provide some references to better understand the invasion mechanism and survival strategy of the P. canaliculata.

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Section: Discussionmentioning

confidence: 98%

Ca2+ addition facilitates the shell repair with eggs production of Pomacea canaliculata through biomineralization and food intaking regulation

Chen,

Yao,

Zhang

et al. 2023

Sci Rep

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Species composition, distribution and relative abundance of the inshore fish community off the Argentine Islands, Bellingshausen Sea

et al. 2022

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In the last three decades, several interdisciplinary studies investigated the marine ecosystems off the West Antarctic Peninsula (WAP), one of the most impacted areas of the Southern Ocean by the global warming. Although the extent of near-shore habitats along the WAP is wider than elsewhere in Antarctica, the coastal fish communities have been rarely studied. Complementing these previous studies, we provide new data on the species composition, population structure and relative abundance of the inshore fish community living off the Argentine Islands (Bellingshausen Sea). Fish samples were caught all the year round during four different periods spread over ten years (from 2006 to 2017). The fish fauna consisted of fourteen high-Antarctic and low-Antarctic species of notothenioids, most of them belonging to the Nototheniidae. Notothenia coriiceps was by far the most abundant species, followed in decreasing abundance by Chaenocephalus aceratus, Notothenia rossii, Trematomus newnesi and Trematomus bernacchii. Our findings provide context for future ecological studies as this area represents either a spawning and nursery area for multiple species in this study. More generally, the inshore waters off the Argentine Islands represent the southern limit of distribution for several low-Antarctic species, and our results provide critical baseline data for assessing possible disruptions in population dynamics driven by the ongoing climate change.

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Egg predation in Antarctic fish: the ingestion by Notothenia coriiceps of an entire Trematomus bernacchii spawn identified by molecular techniques

Cited by 2 publications

References 42 publications

Ca2+ addition facilitates the shell repair with eggs production of Pomacea canaliculata through biomineralization and food intaking regulation

Ca2+ addition facilitates the shell repair with eggs production of Pomacea canaliculata through biomineralization and food intaking regulation

Species composition, distribution and relative abundance of the inshore fish community off the Argentine Islands, Bellingshausen Sea

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