Distribution, abundance and acoustic properties of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea

O’Driscoll, Richard L.; Macaulay, Gavin J.; Gauthier, Sylvie; Pinkerton, Matt; Hanchet, Stuart

doi:10.1016/j.dsr2.2010.05.018

Cited by 54 publications

(53 citation statements)

References 32 publications

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“…2). The non-krill acoustic signal at these frequencies was considered primarily to be silverfish, and the acoustic/trawling study of silverfish in the Ross Sea by O'Driscoll et al (2011) suggests that this is a reasonable assumption. Bioacoustic sections were created for each of the 571 glider dives (e.g.…”

Section: Acoustic Datamentioning

confidence: 99%

Trophic cascades in the western Ross Sea, Antarctica: revisited

Ainley¹,

Ballard²,

Jones³

et al. 2015

Mar. Ecol. Prog. Ser.

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Section: Acoustic Datamentioning

confidence: 99%

Trophic cascades in the western Ross Sea, Antarctica: revisited

Ainley¹,

Ballard²,

Jones³

et al. 2015

Mar. Ecol. Prog. Ser.

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“…antarcticum is one of the pelagic notothenioid fishes and the only one spending the entire life cycle in the water column (Vacchi et al 2004). It is a key species in the Antarctic shelf food webs, acting as a link between plankton and top predators (O'Driscoll et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Presence and distribution of serotonin in the stomach of the Antarctic silverfish Pleuragramma antarcticum

et al. 2011

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Serotonin is a signal molecule with a wide range of functions in vertebrates. In Antarctic fishes, the serotonergic system has been studied in the brain, revealing differences from temperate fishes related to the long-term cold adaptation. To date, little is known regarding the peripheral nervous system, and no information is available for the stomach. In the present work, we contribute to fill the gaps by investigating the presence and the immunohistochemical distribution of serotonin in the stomach of the Antarctic silverfish Pleuragramma antarcticum, a cold-adapted key species of the Southern Ocean shelf food web. The main aim was to investigate the serotonergic system at the gastric level, in order to reveal possible peculiarities related to long-term cold adaptation, similar to the ones seen in the central nervous system of Antarctic fishes. Serotonin immunoreactivity was detected in the pyloric and cardiac mucosa of P. antarcticum stomach with immunopositive cells in the pyloric and cardiac surface epithelia and in the tubular glands. No immunopositive fibers and neuronal cell bodies were found. Our results highlight that the serotonin distribution pattern at the gastric level is similar to that described in temperate teleosts. This finding suggests that in P. antarcticum, long-term adaptations to the Antarctic condition do not affect the serotonergic system at the gastric level. In addition, our data constitute the baseline information for further investigations aimed at clarifying the effects of short-term temperature variations on the gastric serotonergic system of Antarctic species in the frame of the global climate change

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“…This species has a wide distribution throughout the Ross Sea continental shelf (DeWitt 1970, Granata et al 2000, Ackley et al 2003, Donnelly et al 2004, O'Driscoll et al 2011), but occurs in higher abundance in particular regions. The habitat defined by this analysis indicates that the early life history stages of this species are found in southwesterly locations with cold temperatures (−1.75 to −2°C), bottom depths of 500 and 700 m, slow surface speeds, increased sea ice concentration, deep mixed layers, and proximity to the coast (Table 5).…”

Section: Antarctic Silverfishmentioning

confidence: 99%

Distributions of krill and Antarctic silverfish and correlations with environmental variables in the western Ross Sea, Antarctica

Davis¹,

Hofmann²,

Klinck³

et al. 2017

Mar. Ecol. Prog. Ser.

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Antarctic krill Euphausia superba, crystal krill E. crystallorophias, and Antarctic silverfish Pleuragramma antarctica are key mid-trophic level species in the Ross Sea, connecting primary production to the upper trophic levels. Distributions of these species were constructed from observations made in the western Ross Sea from 1988 to 2004. Distributions of environmental conditions were obtained from a 5-km resolution circulation model (temperature, mixed layer depth, surface speed) and satellite-derived observations (chlorophyll, sea ice cover). A hierarchy of statistical methods determined correlations and relationships between species and environmental conditions. Each species occupies a localized habitat defined by different environmental characteristics. Antarctic krill are concentrated along the northwestern shelf break in a habitat characterized by deep (>1000 m) bottom depth, warm temperature (1 to 1.25°C), decreased sea ice, and proximity to the shelf break. Crystal krill and Antarctic silverfish are concentrated in Terra Nova Bay. Common characteristics of the habitat for these species are southwesterly location, coastal proximity, and cold temperature (−1.75 to −2°C). The habitat characteristics obtained for the 3 species provide a basis for projecting potential distribution changes in response to environmental change and for delineating regions of the Ross Sea for focused management and selection of marine protected areas that support ecosystem-level conservation plans.

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Distribution, abundance and acoustic properties of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea

Cited by 54 publications

References 32 publications

Trophic cascades in the western Ross Sea, Antarctica: revisited

Trophic cascades in the western Ross Sea, Antarctica: revisited

Presence and distribution of serotonin in the stomach of the Antarctic silverfish Pleuragramma antarcticum

Distributions of krill and Antarctic silverfish and correlations with environmental variables in the western Ross Sea, Antarctica

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