Harvest of crayfish as an ecosystem service of wetlands compared to production systems with planted forage

Alford, Amy B.; Kaminski, Richard M.; Grado, Stephen C.; D’Abramo, Louis R.; Avery, Jimmy L.

doi:10.1080/13657305.2016.1180648

Cited by 3 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The vast majority of haplotypes found in invaded areas also appeared in Louisiana but not in other native populations of U.S.A. or Mexico. This pattern is arguably related to the commercial exploitation of this species in Louisiana, where P. clarkii has been reared, harvested, and sold globally by food‐industry companies for a long time (Alford, Kaminski, Grado, D'Abramo, & Avery, ; Gary, ). Although some genetic clusters seem to be differentiated between east and west Louisiana (Hap_01, Hap_04, and Hap_20 predominated in Louisiana east while Hap_03 and Hap_08 predominated in Louisiana west), Texas and Mexico localities, most of the genetic variation in those areas occurred within localities.…”

Section: Discussionmentioning

confidence: 99%

Unravelling the global invasion routes of a worldwide invader, the red swamp crayfish (Procambarus clarkii)

et al. 2019

View full text Add to dashboard Cite

Understanding how introduced species succeed and become widely distributed within non‐native areas is critical to reduce the threats posed by them. Our goal was to reconstruct the main invasion routes and invasion dynamics of a global freshwater invader, the red swamp crayfish, Procambarus clarkii, through the analysis of its genetic variability in both native and invasive ranges. We inferred invasion routes and population structure from the analysis of a fragment (608 base pairs) of the mitochondrial marker cytochrome c oxidase subunit I from 1,062 individuals of P. clarkii in addition to 354 GenBank sequences, for a total of 122 populations (22 natives and 100 invaded). Genetic structure was assessed using analysis of molecular variance and non‐metric multidimensional scaling analyses. We analysed haplotype frequencies for the genetic variability in each locality and region. The haplotype network was depicted by using PopART software. A high haplotype diversity was found in the native range (haplotype diversity [Hd]: 0.90), but also in some non‐native areas, such as western U.S.A. (Hd: 0.80), areas of Mexico (Hd: 0.78), and some hotspots in Europe (e.g. southern Spain or Italy), suggesting a complex pattern of multiple introductions. We grouped all localities in five differentiated groups according to biogeographic origin: the native area, west Americas, east U.S.A., Asia, and Europe. Additionally, the identification of 15 haplotypes shared between at least two localities, the phylogenetic network estimation and indices of genetic differentiation among localities allowed us to identify a large genetic admixture in the native range; the two independent invasion routes (i.e. westwards and eastwards) in U.S.A. from the native range (Louisiana and Texas) with translocations within each area; a stepping‐stone introduction from U.S.A. to Japan (involving few individuals) themselves introduced to China afterwards; the entry of P. clarkii from Louisiana (U.S.A.) into southern Spain and their multiple secondary introductions over Europe as well as other possible introductions in central Europe. Our study emphasises the need for unravelling the global invasion routes and the demographic processes underlying the introduction of exotic species (i.e. admixture, bridgehead invasion effect, and propagule pressure) to control the spread of invasive species. Our findings highlight the value of genetic analyses to identify the geographic origin of source populations as well as the variability of invaded areas in order to reconstruct invasion dynamics and facilitate management of invasive species (e.g. through environmental DNA monitoring).

show abstract

Section: Discussionmentioning

confidence: 99%

Unravelling the global invasion routes of a worldwide invader, the red swamp crayfish (Procambarus clarkii)

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Many crayfish species exhibit polytrophic, omnivorous feeding behaviors (Chucholl, 2013 ; Jackson et al, 2014 ), acting as keystone species (Holdich et al, 2009 , 2014 ). As such, crayfish are well positioned to act as an important conduit of microplastic pollution throughout freshwater ecosystems (Alford et al, 2017 ; Jiang & Cao, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Microplastic burden in invasive signal crayfish (Pacifastacus leniusculus) increases along a stream urbanization gradient

Dent

Chadwick

Eagle

et al. 2023

Ecology and Evolution

View full text Add to dashboard Cite

Microplastics are a globally pervasive pollutant with the potential to directly impact species and accumulate in ecosystems. However, there remains a relative paucity of research addressing their accumulation in freshwater ecosystems and a near absence of work in crayfish, despite their high ecological and economic importance. This study investigated the presence of microplastics in the invasive signal crayfish Pacifastacus leniusculus along a stream urbanization gradient. The results demonstrate a ubiquitous presence of microplastics in crayfish digestive tracts at all sites and provide the first evidence of microplastic accumulation in tail tissue. Evidence of a positive linear trend was demonstrated between microplastic concentration in crayfish and upstream urban area size in generalized linear models. Evidence for a positive effect of the upstream urban area and a negative effect of crayfish length on microplastic concentrations in crayfish was demonstrated in multiple generalized linear regression models. Our results extend the current understanding of microplastics presence in freshwater ecosystems and demonstrate their presence in crayfish in the wild for the first time.

show abstract

Gulf Coast Riceland Seed Biomass Estimates for Waterfowl Habitat Conservation

et al. 2020

View full text Add to dashboard Cite

Biomass estimates of potential waterfowl foods are fundamental to estimating foraging carrying capacity of waterfowl habitat by conservation planners and managers of the North American Waterfowl Management Plan‐Gulf Coast Joint Venture (GCJV). Rice and moist‐soil seeds in Gulf Coast rice fields provide principal sources of energy for waterfowl during migration and winter. We investigated spatio‐temporal biomass dynamics of these seeds and modeled their variation in production and idled rice fields in southwestern Louisiana, southeastern Texas, and the Texas Mid‐Coast, USA, in August and November 2010–2013. We hypothesized that previous estimates of November rice and moist‐soil seed biomass from the Mississippi Alluvial Valley were not applicable to the GCJV region because climate and agricultural production practices (e.g., ratooning, crayfish [Procambrus spp.] aquaculture) are primary inter‐regional contrasts. Waste‐rice biomass was greatest in November in fields with an unharvested second crop of rice from tillers of original plants (i.e., ratoon crop; 837.7 kg[dry]/ha; CV = 16.7%) and least in fields without a ratoon crop (119.3 kg/ha; CV = 18.5%). Moist‐soil seed biomass was greatest in idled rice fields in October (477.3 kg/ha; CV = 24.8%), where substrate and rice stubble were disked at the time of sampling, and in idled fields with standing native vegetation in November (304.8 kg/ha; CV = 17.1%). Field‐level variation in waste rice in production fields in November was best explained by an interaction between field management (e.g., harvested ratoon) and rice variety. We were unable identify a reliable predictor of field‐level variation in moist‐soil seed biomass in idled fields for July–August or November (i.e., null model was best or competitive). Substituting existing seasonal moist‐soil and rice seed biomass estimates in GCJV planning models with those from our study would result in a seasonally flooded habitat objective 76% (101,974 ha) greater than the current GCJV estimate for 3 rice‐growing planning areas. We encourage conservation planners in the GCJV region to use biomass estimates from our study because they are reasonably precise for planning and implementation (i.e., CV ~ 20%) and represent most contemporary patterns of farming practices and food abundance in this region. Further, programs and incentives that promote production of ratoon rice crops and allow growth of naturally occurring vegetation in idled rice fields, followed by shallow flooding during November–February, would significantly enhance food resources for waterfowl and other waterbirds in this important landscape for North American avifauna. © 2020 The Wildlife Society.

show abstract

Harvest of crayfish as an ecosystem service of wetlands compared to production systems with planted forage

Cited by 3 publications

References 24 publications

Unravelling the global invasion routes of a worldwide invader, the red swamp crayfish (Procambarus clarkii)

Unravelling the global invasion routes of a worldwide invader, the red swamp crayfish (Procambarus clarkii)

Microplastic burden in invasive signal crayfish (Pacifastacus leniusculus) increases along a stream urbanization gradient

Gulf Coast Riceland Seed Biomass Estimates for Waterfowl Habitat Conservation

Contact Info

Product

Resources

About