Origin and genetic diversity of the invasive mussel Semimytilus algosus in South Africa, relative to source populations in Chile and Namibia

Zeeman, Zannè; Branch, George M.; Heyden, Sophie von der

doi:10.1007/s10530-020-02257-x

Cited by 8 publications

(9 citation statements)

References 97 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…transport of oyster spat) have been implicated as vectors for the introduction of S. algosus (Mead et al 2011a;de Greef et al 2013;Bigatti et al 2014). Although molecular evidence, coupled with a pattern of rapid geographic spread, suggests that this mussel was introduced from Namibia to South Africa via long-distance larval transport, the importation of oyster spat remains a contender as a possible vector (Zeeman 2016;Zeeman et al 2020).…”

Section: Semimytilus Algosus (Gould 1850) In South Africamentioning

confidence: 99%

Status of a decennial marine invasion by the bisexual mussel Semimytilus algosus (Gould, 1850) in South Africa

Kevin

McQuaid

Pulfrich

et al. 2020

African Journal of Marine Science

View full text Add to dashboard Cite

The invasion history and current distribution of the alien marine mussel, the bisexual mussel Semimytilus algosus, on rocky shores of South Africa is described in this study. The eastern edge of its distribution has been monitored since 2014, and the most-recent observations were made between January and March of 2020, at 16 sites between Hondeklipbaai on the west coast and Nature's Valley on the south coast. From these 2020 records, the species ranged across approximately 840 km along the coast, from Hondeklipbaai to Hermanus. The species' invasion history and distribution suggests that this mussel has persisted on the west coast over the past decade, and spread along the coast in both northward and south-southeastward directions. Since 2010, the species has spread predominantly in a southerly and then easterly direction, extending its range by ~270 km into the Agulhas ecoregion. In contrast, its spread has been slower to the north, with a range extension of only ~75 km. Long-term, routine monitoring of the coast to track the spread of S. algosus and other invasive marine species, and to identify new incursions, is recommended to support evidence-based management of biological invasions.

show abstract

Section: Semimytilus Algosus (Gould 1850) In South Africamentioning

confidence: 99%

Status of a decennial marine invasion by the bisexual mussel Semimytilus algosus (Gould, 1850) in South Africa

Kevin

McQuaid

Pulfrich

et al. 2020

African Journal of Marine Science

View full text Add to dashboard Cite

show abstract

“…The apparent disappearance and re-appearance of the species from this area (i.e., Lüderitz and vicinity) suggests that (1) the local populations went extinct by 2004 and were re-introduced in 2017 or (2) the local population persisted at low numbers (or was restricted to the subtidal zone), evading detection by human observers until 2017. The former scenario is inconsistent with the report of the species from Lüderitz in 2007 [6,17]. The latter scenario is more likely given the low abundance (< 0.5% cover) at intertidal sites where the species was observed, coupled with the transient nature of its occurrence at a given site [36].…”

Section: Plos Onementioning

confidence: 84%

“…Subsequently, records of S . algosus between 1995 and 2013—including our own field surveys—were all geo-referenced to sites within the known range of the species in northern Namibia and in the vicinity of Lüderitz [ 6 , 17 , 23 , 24 , 39 , 48 ].…”

Section: Resultsmentioning

confidence: 99%

“…Chronologically, the next occurrence in northern Namibia was recorded in 1992 [38], which expanded its distribution further south by a further 80 km (Table 1). Subsequently, records of S. algosus between 1995 and 2013-including our own field surveys-were all geo-referenced to sites within the known range of the species in northern Namibia and in the vicinity of Lüderitz [6,17,23,24,39,48].…”

Section: Plos Onementioning

confidence: 99%

“…Although the transport of oyster spat is a likely vector given the history of continuous transfer of spat between shellfish culture sites and known association with the introduction of many other marine organisms in the region [ 15 ], recent molecular evidence has identified long-distance larval transport via coastal currents as another possible vector for the introduction of S . algosus from Namibia to South Africa [ 6 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Historical and contemporary range expansion of an invasive mussel, Semimytlius algosus, in Angola and Namibia despite data scarcity in an infrequently surveyed region

et al. 2020

View full text Add to dashboard Cite

Understanding the spread of invasive species in many regions is difficult because surveys are rare. Here, historical records of the invasive marine mussel, Semimytilus algosus, on the shores of Angola and Namibia are synthesised to reconstruct its invasive history. Since this mussel was first discovered in Namibia about 90 years ago, it has spread throughout the western coast of southern Africa. By the late 1960s, the species was well established across a range of 1005 km of coastline in southern Angola and northern Namibia. Although only coarse spatial resolution data are available since the 1990s, the distribution of S. algosus clearly increased substantially over the subsequent decades. Today, the species is distributed over 2785 km of coastline, appearing in southern Namibia in 2014, whence it spread across the border to northern South Africa in 2017, and in northern Angola in 2015. Conspicuously, its current range appears to be relatively contiguous across at least 810 km of shore in southern Angola and throughout Namibia, with isolated, spatially disjunct occurrences towards the southern and northern limits of its distribution. Despite there being few occurrence records that are unevenly distributed spatially and temporally, data for the distributional patterns of S. algosus in Angola and Namibia provide invaluable insights into how marine invasive species spread in developing regions that are infrequently monitored.

show abstract

Marine macroinvertebrates inhabiting plastic litter in Peru

De-la-Torre

Dioses-Salinas

Pérez-Baca

et al. 2021

Marine Pollution Bulletin

View full text Add to dashboard Cite

Origin and genetic diversity of the invasive mussel Semimytilus algosus in South Africa, relative to source populations in Chile and Namibia

Cited by 8 publications

References 97 publications

Status of a decennial marine invasion by the bisexual mussel Semimytilus algosus (Gould, 1850) in South Africa

Status of a decennial marine invasion by the bisexual mussel Semimytilus algosus (Gould, 1850) in South Africa

Historical and contemporary range expansion of an invasive mussel, Semimytlius algosus, in Angola and Namibia despite data scarcity in an infrequently surveyed region

Marine macroinvertebrates inhabiting plastic litter in Peru

Contact Info

Product

Resources

About