First non-native crustacean established in coastal waters of Alaska

Ashton, Gail; Riedlecker, Eva I.; Ruiz, Gregory M.

doi:10.3354/ab00070

Cited by 24 publications

(10 citation statements)

References 15 publications

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“…For other taxa, records of established alien species exist, although these are also few. A vole is known to be established on Svalbard (Fredga et al 1990) while the first records of a non-native crustacean and species of kelp have been made at lower Arctic latitudes (Ashton et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Humans introduce viable seeds to the Arctic on footwear

Ware¹,

Bergstrom

Müller³

et al. 2011

Biol Invasions

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Expanding visitation to Polar regions combined with climate warming increases the potential for alien species introduction and establishment. We quantified vascular plant propagule pressure associated with different groups of travelers to the high-Arctic archipelago of Svalbard, and evaluated the potential of introduced seeds to germinate under the most favorable average Svalbard soil temperature (10°C). We sampled the footwear of 259 travelers arriving by air to Svalbard during the summer of 2008, recording 1,019 seeds: a mean of 3.9 (±0.8) seeds per traveler. Assuming the seed influx is representative for the whole year, we estimate a yearly seed load of around 270,000 by this vector alone. Seeds of 53 species were identified from 17 families, with Poaceae having both highest diversity and number of seeds. Eight of the families identified are among those most invasive worldwide, while the majority of the species identified were nonnative to Svalbard. The number of seeds was highest on footwear that had been used in forested and alpine areas in the 3 months prior to traveling to Svalbard, and increased with the amount of soil affixed to footwear. In total, 26% of the collected seeds germinated under simulated Svalbard conditions. Our results demonstrate high propagule transport through aviation to highly visited cold-climate regions and isolated islands is occurring. Alien species establishment is expected to increase with climate change, particularly in high latitude regions, making the need for regional management considerations a priority.

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Section: Introductionmentioning

confidence: 99%

Humans introduce viable seeds to the Arctic on footwear

Ware¹,

Bergstrom

Müller³

et al. 2011

Biol Invasions

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show abstract

“…The recognised non-native distribution of C. mutica continues to expand (Ashton et al 2008;Woods et al 2008), and although high abundance and rapid population increases might contribute to the invasive success of C. mutica (Ehrlich 1989;Van Der Velde et al 1998), population fluctuations will also affect localised spread and establishment. Caprella mutica individuals were present at Dunstaffnage for the duration of the study, suggesting long-term establishment at this location.…”

Section: Population Characteristicsmentioning

confidence: 99%

Seasonal population dynamics of the non-native Caprella mutica (Crustacea, Amphipoda) on the west coast of Scotland

Ashton

Burrows

Willis

et al. 2010

Mar. Freshwater Res.

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Abstract. Information on the life history and population dynamics of non-native species is essential to understand the process of invasion and impacts on invaded ecosystems. The non-native marine caprellid amphipod Caprella mutica has successfully established populations on coastlines throughout the temperate northern hemisphere and in New Zealand in the southern hemisphere. The introduction mechanism has been surpassed and it is now important to understand its ecology and biology in non-native habitats. The seasonal population dynamics of C. mutica were investigated over 18 months at four sites with different levels of anthropogenic disturbance on the west coast of Scotland. Abundance of C. mutica fluctuated seasonally at all sites, peaking during June to October. The highest abundance recorded on a single mesh collector was 319 000 individuals m À2 in August 2004 at one of the fish farms. Both seasonal and site-specific factors influenced the population dynamics of C. mutica. Both males and females were significantly larger and more abundant at the fish farm sites. Individuals displayed reproductive characteristics at a smaller size at the fish farm sites, indicating earlier maturity. The results suggest that anthropogenic disturbance and artificial resource enhancement contribute to the global establishment success of non-native C. mutica.

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“…Tierney et al, 2004;Page et al, 2006). Especially, C. mutica is known to have invaded and become established in many regions including North America (Ashton et al, 2008), Europe (Ashton et al, 2006;Cook et al, 2007a) and New Zealand (Inglis et al, 2006). This species is also known as a fouling species that clogs the mesh of set-nets along the Japanese coast where it occurs at high density (Arimoto, 1976).…”

Section: Introductionmentioning

confidence: 96%

Effect of temperature on the duration of reproductive cycles of female Caprella mutica (Crustacea: Amphipoda) in the laboratory

Hosono

2009

Mar. Biodivers. Rec.

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To quantitatively assess the fecundity of female Caprella mutica (Crustacea: Amphipoda), an invasive caprellid species in numerous regions of the world, I reared pairs of adult C. mutica under four different temperature regimes (5, 10, 15 and 208C) and measured the moulting interval, oviposition interval, oviposition-hatch period, and oviposition-juvenile emergence period. Concurrently, I examined changes in the number of eggs per oviposition and hatching success at the different temperatures, and clarified the timing of events from oviposition to juvenile emergence at all temperatures. The findings showed that this species reproduces at temperatures ranging from 5 to 208C. Moulting interval was closely correlated with oviposition interval, becoming longer at lower temperatures. Similarly, the mean oviposition-juvenile emergence period was also longer at lower temperatures. Eggs developed normally at 15 and 208C but showed decreased viability at 5 or 108C. The number of eggs produced per oviposition did not vary with rearing temperature. These findings indicated that reproduction in female C. mutica in the field was frequent with short intervals between oviposition events when temperatures exceeded 158C. Conversely, at temperatures below 108C, reproduction was less frequent, resulting in markedly reduced reproductive rate and an increased probability of unusual egg development.

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First non-native crustacean established in coastal waters of Alaska

Cited by 24 publications

References 15 publications

Humans introduce viable seeds to the Arctic on footwear

Humans introduce viable seeds to the Arctic on footwear

Seasonal population dynamics of the non-native Caprella mutica (Crustacea, Amphipoda) on the west coast of Scotland

Effect of temperature on the duration of reproductive cycles of female Caprella mutica (Crustacea: Amphipoda) in the laboratory

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