Drainage History, Evolution, and Conservation of Tonguetied Minnow (Exoglossum laurae), a Rare and Imperiled Teays River Endemic

Oswald, Kenneth J.; Spinks, Emily; Duktig, Garrett S.; Baker, Justin; Kibbey, Marc R.; Zimmerman, Brian; Tucker, Holly; Boucher, C.; Cincotta, Daniel A.; Starnes, Wayne C.; Kiss, Andor J.; Wright, Jeremy J.; Carlson, Douglas M.; Bangs, Max R.; Roberts, Mark A.; Quattro, Joseph M.

doi:10.1643/ci-18-118

Cited by 4 publications

(2 citation statements)

References 41 publications

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“…Tonguetied Minnow and Brown Trout inhabit a riverine segment with a hydrogeologic profile that mimics their ancestral montane systems. The Tonguetied Minnow is thought to have evolved in the New River, the presentday headwaters of the ancestral Teays River (Hocutt et al 1978(Hocutt et al , 1986Hocutt 1979;Oswald et al 2020). Reconfiguration and rearrangement of fluvial systems driven by cyclical glacial advance and retreat throughout the Pleistocene allowed Tonguetied Minnow to invade western Ohio, where they became confined to the Great Miami River after the last (i.e., most recent) Wisconsin glaciation.…”

Section: Discussionmentioning

confidence: 99%

“…Loss of any one of the Tonguetied Minnow’s four disjunct populations would represent an appreciable reduction in the total number that comprises this rare species. Furthermore, the Great Miami River is one of only two drainages that remain unimpacted by interspecific hybridization of Tonguetied Minnow with Cutlip Minnow E. maxillingua (Oswald et al 2020). The western location of the Great Miami River population is also advantageous since it is displaced farthest from the contemporaneous range of the Cutlip Minnow.…”

Section: Discussionmentioning

confidence: 99%

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Species Distribution Models for a Native Imperiled Minnow and a Nonnative Sport Fish in a Western Ohio River

Oswald

Beery

Rossiter

et al. 2020

N American J Fish Manag

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Sport fisheries are frequent drivers of nonnative fish introductions throughout the inland waters of North America. These fisheries often value aggressive, large-bodied predators, and although they satiate angling demand they are also potentially problematic in systems that support imperiled species. The Tonguetied Minnow Exoglossum laurae is a rare species that maintains a disjunct distribution across small portions of four watersheds in the eastern and Midwestern United States, all of which are stocked with nonnative Brown Trout Salmo trutta for sportfishing. This study estimated habitat preferences for Tonguetied Minnow and Brown Trout in the Great Miami River, the westernmost drainage within the Tonguetied Minnow's range. Model data were based on eight water quality variables and seven stream habitat variables. Negative binomial regressions identified gradient, maximum water temperature, substrate, pool/glide habitat, total dissolved solids, and specific conductance as important predictors of the distribution of Tonguetied Minnow, whereas maximum water temperature and substrate were identified for Brown Trout. These reduced numbers of variables then served as input into maximum entropy species distribution models for Tonguetied Minnow and Brown Trout. Only gradient (model contribution [MC] = 46.9%; permutation importance [PI] = 11.6%) and maximum water temperature (MC = 44.2%; PI = 79.8%) contributed substantially to the species distribution model for Tonguetied Minnow, while maximum water temperature (MC = 63.4%; PI = 76.2%) and substrate (MC = 36.6%; PI = 23.8%) were important contributors for Brown Trout. Water temperature appears to exert the principal influence on the distributions of both species and supports the premise that these species share similar habitat preferences within the Great Miami River. Therefore, the Tonguetied Minnow is likely unable to avoid interspecific interactions, such as predation, posed by Brown Trout that are introduced for sportfishing, thus raising concerns about the conservation of this isolated and highly imperiled population.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Species Distribution Models for a Native Imperiled Minnow and a Nonnative Sport Fish in a Western Ohio River

Oswald

Beery

Rossiter

et al. 2020

N American J Fish Manag

Self Cite

View full text Add to dashboard Cite

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Biogeography of the Macrhybopsis aestivalis complex (Teleostei: Cyprinidae): emphasis on speciation and ancient heterospecific mitochondrial transfer

Hoagstrom

Echelle

2022

Environ Biol Fish

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Introgression and Species Delimitation in the Longear Sunfish Lepomis megalotis (Teleostei: Percomorpha: Centrarchidae)

2021

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Introgression and hybridization are major impediments to genomic-based species delimitation because many implementations of the multispecies coalescent framework assume no gene flow among species. The sunfish genus Lepomis, one of the world’s most popular groups of freshwater sport fish, has a complicated taxonomic history. The results of ddRAD phylogenomic analyses do not provide support for the current taxonomy that recognizes two species, Lepomis megalotis and Lepomis peltastes, in the L. megalotis complex. Instead, evidence from phylogenomics and phenotype warrants recognizing six relatively ancient evolutionary lineages in the complex. The introgressed and hybridizing populations in the L. megalotis complex are localized and appear to be the result of secondary contact or rare hybridization events between nonsister species. Segregating admixed populations from our multispecies coalescent analyses identifies six species with moderate to high genealogical divergence, whereas including admixed populations drives all but one lineage below the species threshold of genealogical divergence. Segregation of admixed individuals also helps reveal phenotypic distinctiveness among the six species in morphological traits used by ichthyologists to discover and delimit species over the last two centuries. Our protocols allow for the identification and accommodation of hybridization and introgression in species delimitation. Genomic-based species delimitation validated with multiple lines of evidence provides a path towards the discovery of new biodiversity and resolving long-standing taxonomic problems.[ddRAD; genealogical divergence index; hybridization; integrative species delimitation; phylogeny; secondary contact; systematics; taxonomy.]

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Drainage History, Evolution, and Conservation of Tonguetied Minnow (Exoglossum laurae), a Rare and Imperiled Teays River Endemic

Cited by 4 publications

References 41 publications

Species Distribution Models for a Native Imperiled Minnow and a Nonnative Sport Fish in a Western Ohio River

Species Distribution Models for a Native Imperiled Minnow and a Nonnative Sport Fish in a Western Ohio River

Biogeography of the Macrhybopsis aestivalis complex (Teleostei: Cyprinidae): emphasis on speciation and ancient heterospecific mitochondrial transfer

Introgression and Species Delimitation in the Longear Sunfish Lepomis megalotis (Teleostei: Percomorpha: Centrarchidae)

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