Differential tolerance to metals among populations of the introduced bryozoan Bugula neritina

Piola, Richard F.; Johnston, Emma L.

doi:10.1007/s00227-005-0156-5

Cited by 84 publications

(64 citation statements)

References 57 publications

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“…Although tolerance to pollution has been suggested as a trait of a successful invader for certain species (Den Hartog et al 1992;Ç inar et al 2005;Vila-Gispert et al 2005;Boltovskoy et al 2006;Piola and Johnston 2006;Rajagopal et al 2006;Villar et al 1999;Grabowski et al 2007; and see Van der Velde et al 2000 for examples of pollution tolerance of some freshwater taxa), prior to our study there were no quantitative data testing and supporting this hypothesis for the wide taxonomic range of aquatic invaders included here. Disturbed communities have been hypothesized to be more invasible than pristine communities (Elton 1958;Moyle and Light 1996;Williamson 1996;Lozon and MacIsaac 1997), and pollution could be considered a form of disturbance.…”

Section: Discussionmentioning

confidence: 61%

Invaders are not a random selection of species

et al. 2009

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We assembled information on 119 species of freshwater macroinvertebrate invaders in North America and Europe, and compared them to all native freshwater species in North America and Europe. We tested whether the invaders were a random or selected group among taxa (phylum or class), water quality requirements, and feeding habit. We found that freshwater macroinvertebrate invaders are not a random selection of species, and are overrepresented by molluscs and crustaceans, while taxa richness of native communities are dominated by insects. Over 35% of native species of aquatic invertebrates in North America are only able to live in areas with excellent or very good water quality, and are intolerant of organic pollution. In contrast, all invaders are tolerant of at least moderate amounts of organic pollution. There was a significant difference in the distribution of feeding habits between native species and invaders: collector-filterers (including suspension feeders) were 2.5-3 times more abundant, and predators were 3-4 times less abundant among invaders than among native invertebrates. The ongoing spread of exotic species affects the biodiversity of selected taxa, shifts communities toward greater tolerance of organic pollution and increases the numbers of suspension feeders, thereby enhancing benthic pelagic coupling in waterbodies with high densities of invaders. Because these processes are very similar in Europe and North America, we suggest that the observed patterns may have a common global effect.

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Section: Discussionmentioning

confidence: 61%

Invaders are not a random selection of species

et al. 2009

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“…This species is able to attach to ship hulls [41] showing tolerance to heavy metals, such as copper and zinc present in several antifouling paints [55,72]. Bugula neritina is currently considered a species complex forming at least three different lineages (Type S, D and N) that also differ in their distributional patterns [49,71,73,74].…”

Section: Discussionmentioning

confidence: 99%

Diversity of Bugulidae (Bryozoa, Cheilostomata) colonizing artificial substrates in the Madeira Archipelago (NE Atlantic Ocean)

2016

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“…metallothionein). Also it was urged to look further into RNAi, stress granules and epigenetic mechanisms, as possible regulators of ecologically relevant transcriptional regulation, because evidence for the Table 1 Invertebrate species exhibiting genetically based heavy metal tolerance in laboratory-reared offspring from field populations, an overview of evidence appearing since the reviews by Klerks and Weis (1987) and Groenendijk et al, 1999b from contaminated site Biomphalaria glabrata Cd Cd tolerance is reflected as a cost to Salice & Roesijadi, 2002 (Gastropoda) parasite infection Bugula neritina (Bryozoa) Cu Increased growth in the presence of high Piola & Johnston, 2006 Cu concentrations and decreased growth in the absence of Cu, relative to reference population importance of these processes is growing. Recent research along these lines includes the use of genomic tools (such as transcriptional profiling), which can be used to elucidate evolutionary adaptations (Neumann & Galvez, 2002;.…”

Section: Heavy Metal Tolerance and Genetic Adaptationmentioning

confidence: 99%

Molecular mechanisms of heavy metal tolerance and evolution in invertebrates

Janssens¹,

Roelofs²,

Straalen³

2009

Insect Science

149

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Following the genomics revolution, our knowledge of the molecular mechanisms underlying defenses against stress has been greatly expanded. Under strong selective pressure many animals may evolve an enhanced stress tolerance. This can be achieved by altering the structure of proteins (through mutations in the coding regions of genes) or by altering the amount of protein (through changes in transcriptional regulation). The latter type of evolution can be achieved by substitutions in the promoter of the gene of interest (cisregulatory change) or by altering the structure or amount of transcriptional regulator proteins (trans-regulatory change). The metallothionein system is one of the best studied stress response systems in the context of heavy metals. Metallothionein expression is assumed to be regulated by metal transcription factor 1 (MTF-1); however, up to now the involvement of MTF-1 has only been proven for some vertebrates and Drosophila. Data on invertebrates such as nematodes and earthworms suggest that other mechanisms of metallothionein induction may be present. A detailed study of Cd tolerance was done for a species of soilliving springtail, Orchesella cincta. The metallothionein gene of this species is overexpressed in metal-exposed field populations. Analysis of the metallothionein promoter has demonstrated extensive polymorphisms that have a functional significance, as shown in bioreporter assays. In a study comparing 20 different populations, the frequency of a high-expresser promoter allele was positively correlated with the concentration of metals in soil, especially Cd. The springtail study shows that cis-regulatory change of genes involved in the cellular stress response may contribute to evolution of metal tolerance.

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Differential tolerance to metals among populations of the introduced bryozoan Bugula neritina

Cited by 84 publications

References 57 publications

Invaders are not a random selection of species

Invaders are not a random selection of species

Diversity of Bugulidae (Bryozoa, Cheilostomata) colonizing artificial substrates in the Madeira Archipelago (NE Atlantic Ocean)

Molecular mechanisms of heavy metal tolerance and evolution in invertebrates

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