First record of Apocorophium acutum (Chevreux, 1908) (Amphipoda, Corophiidae, Corophiinae) from Uruguay, with notes on the biology and distribution

Demicheli, Álvaro; Verdi, Ana

doi:10.15560/14.6.1

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2018

DOI: 10.15560/14.6.1

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First record of Apocorophium acutum (Chevreux, 1908) (Amphipoda, Corophiidae, Corophiinae) from Uruguay, with notes on the biology and distribution

Álvaro Demicheli¹,

Ana Verdi²

Abstract: The amphipod Apocorophium acutum (Chevreux, 1908) has a worldwide distribution due to dispersion by ballast water and the hulls of ships. Here we provide a record of this species from Rocha department, Uruguay, which is the first record in the Atlantic South American coast. This record is 5,400 km from the nearest previously known record in Venezuela. Images and morphological characteristics are provided to distinguish from other species of Corophiidae previously recorded in the country.

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2022

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Are urban mangroves emerging hotspots of non-indigenous species? A study on the dynamics of macrobenthic fouling communities in fringing red mangrove prop roots

2022

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Urbanization represents a radical transformation of natural habitats that alters all the biotic and abiotic properties governing ecosystems. Urban expansion often results in oversimplified communities, where most specialists decline or disappear and a few generalist or exotic species become dominant. The consequences of urban expansion in mangrove forests are understudied, although these systems have been altered by humans for centuries and the growth of human population in tropical coasts is expected to be faster than in higher latitudes. To assess the importance of indigenous and non-indigenous species in driving temporal and spatial changes in community structure of red-mangrove prop-root macrobenthic communities, we studied heavily altered mangrove forests from two bays from the Caribbean coast of Colombia in 2005 and 2021. In all places/periods, the community richness was low, a few taxa were dominant (11 taxa, out of 40, comprised ~ 90% of the total abundance) and 35% of those taxa were non-indigenous species whose presence is related with known stressors in urbanized systems. Hence, call for efforts to assess whether urban mangrove forests are emerging as hotspots for non-indigenous biota. Community structure did not change within or between bays, there was a clear, significant turnover of core species between 2005 and 2021, with non-indigenous species playing a prominent role in this variability. This was puzzling—ecological theory asserts that the abundance of a species is related to their permanence: core species are relatively stable through time, while rare species appear or disappear—but this may not apply for stressed communities influenced by non-indigenous biota.

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Are urban mangroves emerging hotspots of non-indigenous species? A study on the dynamics of macrobenthic fouling communities in fringing red mangrove prop roots

2022

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First record of Apocorophium acutum (Chevreux, 1908) (Amphipoda, Corophiidae, Corophiinae) from Uruguay, with notes on the biology and distribution

Cited by 1 publication

References 9 publications

Are urban mangroves emerging hotspots of non-indigenous species? A study on the dynamics of macrobenthic fouling communities in fringing red mangrove prop roots

Are urban mangroves emerging hotspots of non-indigenous species? A study on the dynamics of macrobenthic fouling communities in fringing red mangrove prop roots

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