{"elementGlobalId":100249,"circumscripConfidence":null,"classificationLevel":{"id":7,"classificationLevelNameEn":"Species","classificationLevelNameEs":"Especies","classificationLevelNameFr":"Espèce"},"classificationStatus":{"id":1,"classificationStatusDescEn":"Standard","classificationStatusDescEs":"Estándar","classificationStatusDescFr":"Standard"},"iucn":{"id":11,"iucnDescEn":"Least concern","iucnDescEs":"Menos preocupante","iucnDescFr":"Moins préoccupante","iucnCode":"LC"},"nameCategory":{"id":1,"nameCategoryDescEn":"Vertebrate Animal","nameCategoryDescEs":"Animal vertebrado","nameCategoryDescFr":"Animal vertébré","nameTypeCd":"A","nameTypeDesc":"Zoological"},"rankMethodUsed":null,"formattedScientificName":"<i>Necturus louisianensis</i>","scientificName":"Necturus louisianensis","scientificNameAuthor":"Viosca, 1938","primaryCommonName":"Red River Mudpuppy","relatedItisNames":"<i>Necturus maculosus louisianensis</i> Viosca, 1938 (TSN 208250)","uniqueId":"ELEMENT_GLOBAL.2.100249","elcode":"AAAAE01041","conceptRefFullCitation":"Collins, J. T. 1990. Standard common and current scientific names for North American amphibians and reptiles. 3rd ed. Society for the Study of Amphibians and Reptiles. Herpetological Circular No. 19. 41 pp.","conceptName":"<i>Necturus maculosus louisianensis</i>","taxonomicComments":"Petranka (1998) and Crother et al. (2000 and subsequent updates) treat <i>louisianensis </i>as a subspecies. Fouquette and Dubois (2014) recognize <i>N. louisianensis</i> as a distinct species and this has been accepted by Frost (2020). Limited samples in a study by Chabarria et al. (2018) were consistent with either taxonomic interpretation. The taxonomic status of this species requires further research.","roundedGRank":"G4","conservationStatusFactorsEditionDate":null,"conservationStatusFactorsEditionAuthors":null,"primaryCommonNameLanguage":"EN","recordType":"SPECIES","elementNationals":[{"elementNationalId":164030,"classifConfidence":null,"nation":{"id":225,"nameEn":"United States","nameEs":"Estados Unidos","nameFr":"États-Unis","isoCode":"US","region":"United States"},"roundedNRank":"N4","elementSubnationals":[{"elementSubnationalId":1006256,"subnation":{"id":43,"nameEn":"Oklahoma","nameEs":"Oklahoma","nameFr":"Oklahoma","subnationCode":"OK","dnationId":225},"roundedSRank":"SNR","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"SNR","speciesSubnational":{"elementSubnationalId":1006256,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":314525,"subnation":{"id":30,"nameEn":"Missouri","nameEs":"Missouri","nameFr":"Missouri","subnationCode":"MO","dnationId":225},"roundedSRank":"S4","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S4","speciesSubnational":{"elementSubnationalId":314525,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1006253,"subnation":{"id":23,"nameEn":"Louisiana","nameEs":"Louisiana","nameFr":"Louisiane","subnationCode":"LA","dnationId":225},"roundedSRank":"S2","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S2","speciesSubnational":{"elementSubnationalId":1006253,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":396791,"subnation":{"id":4,"nameEn":"Arkansas","nameEs":"Arkansas","nameFr":"Arkansas","subnationCode":"AR","dnationId":225},"roundedSRank":"S5","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S5","speciesSubnational":{"elementSubnationalId":396791,"hybrid":false,"exotic":false,"native":true}},{"elementSubnationalId":1006255,"subnation":{"id":21,"nameEn":"Kansas","nameEs":"Kansas","nameFr":"Kansas","subnationCode":"KS","dnationId":225},"roundedSRank":"S3","dataSensitive":{"id":2,"dataSensitiveDescEn":"No","dataSensitiveDescEs":null,"dataSensitiveDescFr":null,"dataSensitiveCode":"N"},"dataSensitiveCategory":null,"srank":"S3","speciesSubnational":{"elementSubnationalId":1006255,"hybrid":false,"exotic":false,"native":true}}],"nrankReviewYear":1996,"nrank":"N4","speciesNational":{"elementNationalId":164030,"exotic":false,"native":true}}],"lastModified":"2026-10-02T21:33:01.376977Z","lastPublished":"2026-10-02T21:32:08.892226Z","promotionalDescription":null,"conceptLineageSummary":null,"nsxUrl":"/Taxon/ELEMENT_GLOBAL.2.100249/Necturus_louisianensis","grankAdjustmentReasons":null,"grankChangeDate":"1996-11-01","grankReviewDate":"1996-11-01","grankReasons":null,"grank":"G4","rankInfo":{"elementGlobalId":100249,"aooPercentGood":null,"enviromentalSpecificity":null,"intrinsicVulnerability":null,"longTermTrend":null,"numberEos":null,"numberGoodEos":null,"numberProtEos":null,"popSize":null,"rangeExtent":null,"shortTermTrend":null,"threatImpactAssigned":null,"rangeExtentComments":"The range of this species includes northern Louisiana north to Arkansas, eastern Oklahoma, southern Missouri, and southeastern Kansas (Fouquette and Dubois 2014).","areaOfOccupancy":null,"areaOfOccupancyComments":null,"numberEosComments":null,"popSizeComments":null,"viabilityComments":null,"threatImpactComments":null,"shortTermTrendComments":null,"longTermTrendComments":null,"inventoryNeeds":null,"numberProtEosComments":null,"protectionNeeds":null,"otherConsiderations":null,"intrinsicVulnerabilityComments":null,"enviromentalSpecificityComments":null},"animalCharacteristics":{"elementGlobalId":100249,"majorHabitat":null,"nonMigrant":false,"localMigrant":false,"longDistanceMigrant":false,"mobilityMigrationComments":null,"foodHabitsComments":null,"animalPhenologyComments":null,"colonialBreeder":false,"length":null,"width":null,"weight":null,"animalPhenologies":[],"animalFoodHabits":[]},"occurrenceDelineations":[{"eoSpecsDetailId":1172,"locationUseClass":{"id":1,"locationUseClassDescEn":"Not applicable","locationUseClassDescEs":"No se aplica","locationUseClassDescFr":"Sans objet","displayOrder":1},"eoSpecGroupName":"Proteid Salamanders (Waterdogs)","subtypes":null,"inferredExtentDistance":0.1,"inferredExtentNotes":null,"minimumEoCriteria":"Occurrences are based on evidence of historical presence, or current and likely recurring presence, at a given location. 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The 10-km separation distance for suitable habitat reflects the ease of movement and dispersal along riverine habitats and the likely low probability than locations separated by less than 10 km of suitable habitat would represent independent populations.","versionDate":"2004-03-15","versionAuthor":"Hammerson, G.","versionNotes":null,"lastModified":"2020-04-30T02:04:55.582302Z"}],"plantCharacteristics":null,"elementManagement":{"elementGlobalId":100249,"eoManagementGroupName":null,"stewardshipOverview":null,"impacts":null,"restorationPotential":null,"siteConservationPlansConsidered":null,"managementMethods":null,"monitoringMethods":null,"managementProgramContacts":null,"monitoringProgramContacts":null,"managementResearchPrograms":null,"managementResearchNeeds":null,"biologicalResearchNeeds":null,"additionalTopics":null},"occurrenceViabilities":[{"eoRankSpecsDetailId":101832,"eoRankSpecsGroupName":null,"locationUseClass":{"id":1,"locationUseClassDescEn":"Not applicable","locationUseClassDescEs":"No se aplica","locationUseClassDescFr":"Sans objet","displayOrder":1},"excellentViability":null,"goodViability":null,"fairViability":null,"poorViability":null,"viabilityJustification":"Use the Generic Guidelines for the Application of Occurrence Ranks (2008).<br>The Key for Ranking Species Occurrences Using the Generic Approach provides a step-wise process for implementing this method.","versionDate":null,"versionAuthor":null,"versionNotes":null,"lastModified":"2020-05-14T02:15:23.406222Z"}],"references":[{"id":1040366,"citation":"Chabarria, R. 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Seidel, J. W. Sites, Jr., T. W. Taggart, S. G. Tilley, and D. B. Wake. 2000 [2001]. Scientific and standard English names of amphibians and reptiles of North America north of Mexico, with comments regarding confidence in our understanding. Society for the Study of Amphibians and Reptiles, Herpetological Circular No. 29. 82 pp.","shortCitationAuthor":"Crother et al.","shortCitationYear":2000,"referenceCode":"B00CRO01NAUS","lastModified":"2020-02-25T18:11:56.631788Z"},{"id":849098,"citation":"DuBois, A., and J. Raffaëlli. 2012. A new ergotaxonomy of the order Urodela Duméril, 1805 (Amphibia, Batrachia). Alytes. Paris 28:77–161.","shortCitationAuthor":"DuBois and Raffaelli","shortCitationYear":2012,"referenceCode":"A12DUB01EHUS","lastModified":"2020-02-25T18:12:22.147815Z"},{"id":849097,"citation":"Fouquette Jr., M.J., and A. DuBois. 2014. A Checklist of North American Amphibians and Reptiles. Seventh Edition. Volume 1—Amphibians. 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