United States (contiguous states) country information

Common names: Chucky madtom, Chucky madtom
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: The Chucky Madtom is known from only two streams, both of the French Broad River system of eastern Tennessee; known from a single specimen from Dunn Creek, Sevier County, and from about three stream kilometer of Little Chucky Creek from the mouth of Jackson Branch downstream to Bible Bridge road crossing, Greene County. The Dunn Creek specimen was collected in 1940 and additional surveys have not yielded additional specimens, and the species may be extirpated from this stream. Surveys of streams with potentially suitable habitat in eastern Tennessee found the species only in a 3-km reach of Little Chucky Creek. Although the area has been intensively sampled for madtoms, by seining and snorkeling, since 1991, success has been sporadic; only 14 specimens have been collected. In May 1991, two (UT 48.724) were collected by TVA personnel at Bible Bridge road crossing; in September 1994, four specimens (3 in SIUC 52380, 1 retained by JMG for genetic analysis) at Bible Bridge Road crossing, and five specimens (1 each in SIUC 52377 and SIUC 52379, 3 for genetic analysis), at the mouth of Jackson Branch. Subsequent surveys targeting madtoms were unsuccessful, but a collection in March 2001 yielded one specimen (UAIC 12430.01). Recently, Conservation Fisheries Inc. personnel collected two specimens in May 2004 that were brought live to their aquaculture facility in Knoxville, Tennessee, with the intent of initiating a captive breeding program. The range of Noturus crypticus, like other madtoms of eastern Tennessee (e.g., N. baileyi and N. flavipinnis) likely has declined. Currently it occupies a tiny range and exists at a very low density (probably less than 100 individuals). The occupied reach of Little Chucky Creek is not pristine, but existing habitat and the fish and mussel faunas suggest the stream has not been substantially altered by anthropogenic influences. Upstream of the occupied reach was observed with greater agricultural impacts, including application of herbicides to remove riparian vegetation and bank erosion and siltation from cattle access to streams. The capacity of the system to absorb sediment without damage to the biotic community may have been reached. If the samples are indicative of population size, the species is vulnerable to a variety of anthropogenic and stochastic events (e.g., drought, disease, floods) (Ref. 56218). Status of threat: This species should be protected as a federally endangered species. Promoting agricultural practices that minimize siltation and restoring and protecting riparian zones throughout the Little Chucky Creek watershed would preserve its habitat (Ref. 56218). Status of threat: endangered. Criteria: 1,5 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Burr, B.M., D.J. Eisenhour and J.M. Grady, 2005
National Database:

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分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Siluriformes (Catfishes) 鯰形目 (Catfishes) > Ictaluridae (North American freshwater catfishes) 鮰科 (North American freshwater catfishes)
Etymology: Noturus: Greek, noton = back + Greek, oura = tail; refred to the position of the tail over the back (Ref. 45335); crypticus: Name from the Greek stem 'kryptos', meaning hidden or secret, referring to this species' secretive habits, and for having kept its identity in secret for so long..

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水底中水層性.

分布國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

North America: USA.

大小 / 重量 / 年齡

Maturity: L_m ? range ? - ? cm
Max length : 6.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 56218)

簡短描述型態特徵 | 形態測量圖

背的軟條 (總數): 6; 臀鰭軟條: 15 - 17. Diagnosis: Distinguished from other members of the Noturus elegans species group by having: modally 16 anal rays (vs. 18 in Noturus fasciatus); modally 8 pelvic rays (vs. 9); 2-10 medium-large sized melanophores on the cheek (vs. large melanophores absent on cheek); adipose fin band extending only to base or half-way up fin (vs. extending half-way up to edge of fin in fasciatus); adipose and caudal fins distinctly joined at their juncture (vs. weakly connected in fasciatus); three evenly spaced pale and dark bands in caudal fin (vs. caudal fin bands usually two and unevenly spaced); robust body shape, with body width at pectoral fin origin 23% or more of SL and greater than anal fin base length (vs. slender body shape, with body width at pectoral fin origin 22% or less of SL and less than anal fin base length). There is an absence of shared alleles for eight allozyme loci (mAAT-A, sACOHA, GPI-B, LDH-B, sMDHP-A, Pep-b, Pep-D, and PGM-A) distinguishes crypticus and fasciatus, which also differ by 5% Cytb sequence divergence. Similarly, both share no alleles at eight allozyme loci (mAAT-A, sAATA-A, sACOH-A, FUM-A, GPI-A, GPI-b, LDH-B, sMDHP-A, and Pep-D) and are 6.3% divergent for Cytb (Ref. 56218).

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Burr, B.M., D.J. Eisenhour and J.M. Grady, 2005. Two new species of Noturus (Siluriformes: Ictaluridae) from the Tennessee River drainage: description, distribution, and conservation status. Copeia 2005(4):783-802. (Ref. 56218)

IUCN 瀕危狀態 (Ref. 130435)

極危 (CR) (B1ab(iii)+2ab(iii)); Date assessed: 02 March 2012

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).

營養階層 (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

回復力 (Ref. 120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Noturus crypticus Burr, Eisenhour & Grady, 2005

Common names from other countries

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Environment: milieu / climate zone / depth range / distribution range 生態學

分布國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

大小 / 重量 / 年齡

簡短描述型態特徵 | 形態測量圖

生物學特性字彙 (例如 epibenthic)

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

IUCN 瀕危狀態 (Ref. 130435)

CITES (Ref. 128078)

CMS (Ref. 116361)

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Noturus crypticus Burr, Eisenhour & Grady, 2005

Common names from other countries

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Environment: milieu / climate zone / depth range / distribution range 生態學

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

大小 / 重量 / 年齡

簡短描述 型態特徵 | 形態測量圖

生物學特性 字彙 (例如 epibenthic)

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

IUCN 瀕危狀態 (Ref. 130435)

CITES (Ref. 128078)

CMS (Ref. 116361)

對人類具威脅

人類使用

更多資訊

工具

特別的報告

下載 XML

網路資源

Estimates based on models

分布國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

簡短描述型態特徵 | 形態測量圖

生物學特性字彙 (例如 epibenthic)