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Cottus specus Adams & Burr, 2013

Grotto sculpin
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drawing shows typical species in Cottidae.

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> Perciformes/Cottoidei (Sculpins) > Cottidae (Sculpins)
Etymology: Cottus: Greek, kottos = a fish (Ref. 45335);  specus: The specific epithet 'specus' means a cave or cavern, in reference to the primary habitat in caves..

Environment: milieu / climate zone / depth range / distribution range Ecologie

; zoet water benthopelagisch. Temperate

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North America: Bois Brule drainage in eastern Missouri, USA.

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 10.3 cm SL mannelijk / geslacht onbekend; (Ref. 92978)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 7 - 8; Dorsale zachte stralen (totaal) : 16 - 18; Anale zachte stralen: 12 - 14. Distinguished from all congeners, except Cottus carolinae, Cottus chattahoochee, Cottus confusus, Cottus hubbsi, and some populations of Cottus beldingii by the complete lateral line ending near the base of the caudal fin and dorsal fins not usually connected. Cottus specus only occupies geographically adjacent to C. carolinae and can be distinguished by a reduction in eye size: 1-5% SL in 98% of specimens (1-4% in 85% of specimens) versus eye size 5-9% of SL in 100% of specimens. Cottus specus possesses a significant increase in cephalic lateralis pore size, 92% above 500 mm (vs. 100% in C. carolinae between 200-500 mm) (Ref. 92978).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Occurs in cave streams as well as their resurgences, primarily over gravel, cobble, or bedrock bottom (Ref. 92978).

Levenscyclus en paargedrag Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven

Builds nests under cobble or pebble substrate. Lays adhesive eggs, in a clump, that are attached to the underside of a rock (Ref. 92978).

Hoofdreferentie Upload your references | Referenties | Coördinator | Medewerkers

Adams, G.L., B.M. Burr, J.L. Day and D.E. Starkey, 2013. Cottus specus, a new troglomorphic species of sculpin (Cottidae) from southeastern Missouri. Zootaxa 3609(5):484-494. (Ref. 92978)

Status op de Rode Lijst van het IUCN (Ref. 130435)

  Niet geëvalueerd 

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00389 - 0.01621), b=3.12 (2.95 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.3   ±0.5 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).