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Siluriformes (Catfishes) >
Trichomycteridae (Pencil or parasitic catfishes) > Microcambevinae
Etymology: Listrura: Greek, listroo = to tie + Greek, oura = tail (Ref. 45335); gyrinura: Name gyrinura from the Greek words 'gyrinus' and 'ura', meaning 'tadpole' and 'tail', in reference to the tadpole-like caudal fin and caudal peduncle shape of the new species.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk. Subtropical
South America: Brazil.
Storlek / Vikt / Ålder
Könsmognad: Lm ? range ? - ? cm
Max length : 4.2 cm SL hane/ej könsbestämd; (Ref. 137686)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 6 - 8; Mjukstrålar i analfenan: 8; Ryggkotor: 51 - 52. This species is distinguished from its congeners by the following set of characters: deep caudal peduncle, deeper than the preanal region of the body, as the result of an expanded skin fold involving procurrent caudal-fin rays; vertebrae 51 or 52; process on the dorsal surface of the autopalatine articular facet for the mesethmoid absent; mesethmoid cornu being slightly posteriorly folded; dorsal fin present; dorsal-fin origin at a vertical between the centra of the 31st to 33rd vertebrae, anal-fin origin at a vertical between the centra of the 32nd and 33rd vertebrae; ventral projection on the hyomandibula articular facet for the opercle absent; parhypural posterior process length about half or slightly less of the length between the anterior margin of the parurohyal head and the proximal limit of the posterior process; ventral procurrent caudal-fin rays 31-36 (Ref. 137686).
Body shape (shape guide): elongated; Cross section: circular.
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Costa, W.J.E.M., C.R.M Feltrin, A.M. Katz, 2023. Field studies in small streams of the Atlantic Forest of southern subtropical Brazil reveal two new interstitial microcambevine catfishes of the genus Listrura (Siluriformes: Trichomycteridae). J. Nat. Hist. 57(9-12):475-489. (Ref. 137686)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: saknar intresse
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.1 ±0.3 se; based on size and trophs of closest relatives
Sårbarhet i fisket (Ref.
59153): Low vulnerability (10 of 100).
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