Status and Distribution of the Endangered Benton Cave Crayfish, Cambarus Aculabrum (Decapoda: Cambaridae)

Graening, G. O.; Slay, Michael E.; Brown, Arthur V.; Koppelman, Jeffrey B.

doi:10.1894/0038-4909(2006)51[376:sadote]2.0.co;2

Cited by 9 publications

(4 citation statements)

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“…One cavefish was inadvertently trampled during the annual population survey at Cave Springs Cave in 2000 (Graening and Brown 2000a, b). Additional accounts of trampling have been reported for other stygobiotic species (Weingartner 1977;Lewis 1991;Graening et al 2006c).…”

Section: Discussionmentioning

confidence: 83%

The 30-year recovery effort for the Ozark cavefish (Amblyopsis rosae): Analysis of current distribution, population trends, and conservation status of this threatened species

Graening

Fenolio²,

Niemiller

et al. 2009

Environ Biol Fish

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Here we review the thirty year recovery effort and conservation status of the Ozark cavefish, Amblyopsis rosae. We summarized the historic and current range of the species, and report county range extensions for both A. rosae and its confamilial Typhlichthys subterraneus. Ozark cavefish survey data spanning almost a century were analyzed for temporal trends using the Mann-Kendall Test/Sen's Slope Estimator Method. Results were inconclusive because variance was high and the majority of data sets were not sufficiently large to detect a trend. However, the two largest populations (Cave Springs Cave and Logan Cave, Benton Co., Arkansas) have stabilizing or increasing survey counts. While the number of active cavefish sites has decreased over 50% since 1990, the number of surveyed individuals has not. Reasons for endangerment were reanalyzed since federal listing; the primary threat has shifted from overcollection to habitat degradation. We analyzed the progress of recovery task implementation, and we critically evaluated the basis of delisting criteria. Recovery Task 1, the hydrogeologic delineation of subterranean habitats, is almost complete. Recovery Task 2 prescribes protection and management for Recovery Caves, and important progress has been made. Recovery Task 3 involves the development and implementation of monitoring programs in Recovery Caves. Several important studies have been performed, and indicate that many cavefish populations are experiencing chronic, low-level exposure to a suite of anthropogenic contaminants. Delisting conditions are largely unattainable as currently worded. We suggest that recovery criteria be amended such that habitat protection goals are attainable, that the list of Recovery Caves can be periodically updated, and that the recovery Environ Biol Fish (2010) 87:55-88 population goal is increased and distributed between more sites.

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Section: Discussionmentioning

confidence: 83%

The 30-year recovery effort for the Ozark cavefish (Amblyopsis rosae): Analysis of current distribution, population trends, and conservation status of this threatened species

Graening

Fenolio²,

Niemiller

et al. 2009

Environ Biol Fish

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“…The Ozark Highlands ecoregion is a hotspot of stygobiotic diversity, including snails, copepods, ostracods, amphipods, isopods, amphibians, fishes, and crayfishes 21 . Our study focused on two species of fishes: the Ozark Cavefish Troglichthys rosae 45 , 46 and Salem Plateau Cavefish Typhlichthys eigenmanni 47 and five species of cave crayfishes: Benton County Cave Crayfish Cambarus aculabrum 48 , 49 , Bristly Cave Crayfish C. setosus 50 , 51 , Delaware County Cave Crayfish C. subterraneus 52 , 53 , Oklahoma Cave Crayfish C. tartarus 54 , 55 , and Caney Mountain Cave Crayfish Orconectes stygocaneyi 56 . Although little is known about many of these species, descriptions are quite similar due to convergent evolution (e.g., cryptic behavior, habitat generalists, albinistic, and reduced eyes).…”

Section: Methodsmentioning

confidence: 99%

“…We filtered distilled water between sites on four occasions to provide negative field controls. After eDNA collection, two observers walked or crawled the entire sampling unit, while carefully searching the whole wetted area of springs and caves for cave crayfishes or cavefishes following Graening et al 46 , 49 . We also visually surveyed hand-dug wells in their entirety for one to six minutes using a spotlight both before and after water samples were collected.…”

Section: Methodsmentioning

confidence: 99%

Lithology and disturbance drive cavefish and cave crayfish occurrence in the Ozark Highlands ecoregion

Mouser

Brewer

Niemiller

et al. 2022

Sci Rep

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Diverse communities of groundwater-dwelling organisms (i.e., stygobionts) are important for human wellbeing; however, we lack an understanding of the factors driving their distributions, making it difficult to protect many at-risk species. Therefore, our study objective was to determine the landscape factors related to the occurrence of cavefishes and cave crayfishes in the Ozark Highlands ecoregion, USA. We sampled cavefishes and cave crayfishes at 61 sampling units using both visual and environmental DNA surveys. We then modeled occurrence probability in relation to lithology and human disturbance while accounting for imperfect detection. Our results indicated that occurrence probability of cave crayfishes was negatively associated with human disturbance, whereas there was a weak positive relationship between cavefish occurrence and disturbance. Both cavefishes and cave crayfishes were more likely to occur in limestone rather than dolostone lithology. Our results indicate structuring factors are related to the distribution of these taxa, but with human disturbance as a prevalent modifier of distributions for cave crayfishes. Limiting human alteration near karst features may be warranted to promote the persistence of some stygobionts. Moreover, our results indicate current sampling efforts are inadequate to detect cryptic species; therefore, expanding sampling may be needed to develop effective conservation actions.

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“…Stygobitic crustaceans even include taxa with representatives exclusively associated with underground freshwater habitats, such as the orders Gelyelloida (Copepoda), Bathynellacea (Syncarida), Thermosbaenacea, and Spelaeogriphacea (Peracarida) (Pires, 1987;Stoch, 1995). Among the Decapoda, the most familiar freshwater stygobitic representatives reported from several caves in the Americas and elsewhere around the world include caridean prawns, astacidean crayfishes and brachyuran crabs (Hobbs et al, 1977;Stoch, 1995;Mejía-Ortíz et al, 2003;2008;Graening and Fenolio, 2005;Baldari et al, 2010;Villalobos and Álvarez, 2013;Marin and Sokolova, 2014;Cai and Vidthayanon, 2016).…”

mentioning

confidence: 99%

A new species of stygobitic aeglid from lentic subterranean waters in southeastern Brazil, with an unusual morphological trait: short pleopods in adult males

Bueno

Camargo²,

Moraes

2017

Nauplius

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Status and Distribution of the Endangered Benton Cave Crayfish, Cambarus Aculabrum (Decapoda: Cambaridae)

Cited by 9 publications

References 1 publication

The 30-year recovery effort for the Ozark cavefish (Amblyopsis rosae): Analysis of current distribution, population trends, and conservation status of this threatened species

The 30-year recovery effort for the Ozark cavefish (Amblyopsis rosae): Analysis of current distribution, population trends, and conservation status of this threatened species

Lithology and disturbance drive cavefish and cave crayfish occurrence in the Ozark Highlands ecoregion

A new species of stygobitic aeglid from lentic subterranean waters in southeastern Brazil, with an unusual morphological trait: short pleopods in adult males

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