Genetic variation in native and introduced populations of the red swamp crayfish Procambarus clarkii (Girard, 1852) (Crustacea, Decapoda, Cambaridae) in Mexico and Costa Rica

Torres, Eduardo; Álvarez, Fernando

doi:10.3391/ai.2012.7.2.009

Cited by 33 publications

(26 citation statements)

References 24 publications

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“…The invasive signal crayfish populations we studied had small effective population sizes and low to moderate genetic diversity, despite having been established for more than 25 years ( c . 25 generations), which is similar to what is observed in other invasive crayfish species populations, (e.g., the red swamp crayfish ( Procambarus clarkii ) in China (Yue, Li, Bai, Wang, & Feng, ), Mexico and Costa Rica (Belfiore & May, ; NBN ; Torres & Álvarez, ). It is possible that the low levels of heterozygosity observed are the result of recurrent translocations of small numbers of signal crayfish which may have resulted in founder effects (Gouin, Grandjean, & Souty‐Grosset, ).…”

Section: Discussionsupporting

confidence: 81%

Genetic diversity and parasite facilitated establishment of the invasive signal crayfish (Pacifastacus leniusculus) in Great Britain

Robinson

Leániz

James

et al. 2018

Ecology and Evolution

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Successful establishment of non‐native species is strongly influenced, among other factors, by the genetic variation of founding populations, which can be enhanced by multiple introductions through admixture. Coexisting pathogens can also facilitate the establishment of non‐native species by detrimentally impacting on the native fauna acting as novel weapons. The signal crayfish (Pacifastacus leniusculus) is a highly invasive species, which has caused mass declines of native crayfish in Europe through displacement and transmission of the oomycete Aphanomyces astaci (crayfish plague), which is typically lethal to native European crayfish. However, whether Aphanomyces astaci may have facilitated the invasion of the signal crayfish is not known. We estimated the genetic diversity at microsatellite DNA loci, effective population size, and potential origins of seven infected and noninfected signal crayfish populations in Europe and one founder population in North America. Approximate Bayesian computation analysis and population structuring suggested multiple host introductions from diverse source populations, as well as higher heterozygosity among infected than uninfected populations, which could reflect a fitness advantage. Low effective population size, moderate heterozygosity, and lack of isolation by distance suggest that some invasive signal crayfish populations may not be fully established or that their genetic diversity may have been reduced by eradication attempts.

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Section: Discussionsupporting

confidence: 81%

Genetic diversity and parasite facilitated establishment of the invasive signal crayfish (Pacifastacus leniusculus) in Great Britain

Robinson

Leániz

James

et al. 2018

Ecology and Evolution

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“…On the other hand, the studies that found low genetic diversity (Torres and Álvarez, 2012) argue that despite this fact, populations are still successful in establish and flourish due to a phenomenon named "general-purpose genotype" proposed by Baker (1965), in which different phenotypes would be produce through plasticity and thus, the population would be able to cope with different environmental conditions. High genetic diversity in invasive populations is usually related to multiple introductions or the existence of gene flow among established populations while low genetic diversity is associated with isolated introductions, founder effect and genetic bottlenecks.…”

Section: Geneticsmentioning

confidence: 99%

Red swamp crayfish: biology, ecology and invasion - an overview

et al. 2015

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-Alien species have been transported and traded by humans for many centuries. However, with the era of globalization, biological invasions have reached notable magnitudes. Currently, introduction of alien species is one of the major threats to biodiversity and ecosystem functioning. The North American crayfish Procambarus clarkii is one of the most widely introduced freshwater species in the world, especially due to its high economic importance. It is responsible for great modifications in invaded environments causing irreparable ecological and economic damages. Its impressive ability to successfully colonize a wide range of environments is a consequence of its behavioural and biological characteristics that can adapt to features of the invaded location, conferring to this species a notable ecological plasticity. This review summarizes the available information regarding P. clarkii's biology and invasive dynamics around the world in order to contribute to the understanding of the threats posed by its establishment, as well as to support management and impact mitigation efforts.

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“…One of these, Procambarus clarkii (Girard, 1852) occurs naturally in North America (north‐eastern Mexico and in south‐central USA) (Hobbs, ). In South America, this species has been recorded in Ecuador and Brazil (Magalhães et al ., ; Torres and Álvarez, ) and information generated using the Species Distribution Models (SDMs) reveals other areas suitable for species occupation, especially in southern South America (Paraguay, Chile, Argentina, Uruguay and Brazil) (Palaoro et al ., ). Other non‐native species have been introduced from Oceania (Lawrence and Jones, ): Cherax quadricarinatus (von Martens, 1868), Cherax tenuimanus Smith, 1912 and Cherax cainii Austin, 2002 (Austin and Bunn, ; Mendoza et al ., ).…”

Section: State Of Knowledgementioning

confidence: 97%

The native South American crayfishes (Crustacea, Parastacidae): state of knowledge and conservation status

Almerão

Rudolph

Souty‐Grosset

et al. 2014

Aquatic Conservation

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South America is considered a world biodiversity hotspot, especially for freshwater ecosystems where there is significant biodiversity and endemism across different taxonomic groups. Native South American crayfishes are characterized by small range distributions, high levels of endemism and specific habitat requirements. Although this group may be considered one of the most threatened among South American freshwater crustaceans, IUCN Red List assessments for most of these species are ‘data deficient’. IUCN assessments are technical evaluations of species risk of extinction based on biological indicators of population features, thereby providing a ‘conservation status’ for each species based on common and international standards. Attempts to assess the conservation status of native South American crayfishes have been limited mainly owing to a lack of fundamental data and also misinterpretations of present information. Thus, a revision of the state of knowledge of native South American crayfishes (taxonomy, phylogeny and distribution, genetics, ecology and threats) was carried out coupled with IUCN assessments of conservation status. Globally, the lack of information on the biology of these species is still the major obstacle to making reliable conservation status assessments. For this reason, the Data Deficient (DD) category is still appropriate for many species. However, based on the Extent of Occurrence (EOO) and severely fragmented populations, number of locations and decline in area, extent or quality of habitat, it is recommended that some species (especially Virilastacus spp.) should be moved to threatened categories (VU, EN or CR). The data suggest that others are appropriately in the Near Threatened (NT) category, because they almost reach the thresholds for threatened categories. The assessment of conservation status is essential to support future conservation actions, especially for species allocated to threatened categories. This study has identified new species under threat and also areas for future study to provide relevant data for conservation assessment for ‘data deficient’ species. Copyright © 2014 John Wiley & Sons, Ltd.

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Genetic variation in native and introduced populations of the red swamp crayfish Procambarus clarkii (Girard, 1852) (Crustacea, Decapoda, Cambaridae) in Mexico and Costa Rica

Cited by 33 publications

References 24 publications

Genetic diversity and parasite facilitated establishment of the invasive signal crayfish (Pacifastacus leniusculus) in Great Britain

Genetic diversity and parasite facilitated establishment of the invasive signal crayfish (Pacifastacus leniusculus) in Great Britain

Red swamp crayfish: biology, ecology and invasion - an overview

The native South American crayfishes (Crustacea, Parastacidae): state of knowledge and conservation status

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