Typhlobelus auriculatus

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Typhlobelus auriculatus de Pinna & Zuanon, 2013

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drawing shows typical species in Trichomycteridae.

Classification / Names ຊື່ສາມັນ | ຄຳສັບຄ້າຍຄືກັນ | Catalog of Fishes(ຕະກຸນ, ຊະນິດ) | ITIS | CoL | WoRMS | Cloffa

> Siluriformes (Catfishes) > Trichomycteridae (Pencil or parasitic catfishes) > Glanapteryginae
Etymology: Typhlobelus: Greek, typhlos = blind + Greek, belos, -eos, -oys = arrow (Ref. 45335);  auriculatus: From a Latin adjective auriculatus, meaning with ears, referring to the conspicuously modified pseudotympanus in this species..

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

; ນ້ຳຈືດ ອາໄສຢູ່ໃກ້ໜ້າດິນໃຕ້ພື້ນທ້ອງນ້ຳ. Tropical

ການແຜ່ກະຈາຍ ປະເທດ | ເຂດ FAO | ລະບົບນິເວດ | ການປະກົດຕົວ | Point map | ການແນະນຳ | Faunafri

South America: Lower rio Xingu in Brazil.

ຂະໜາດ / ນ້ຳໜັກ / Age

Maturity: Lm ?  range ? - ? cm
Max length : 3.0 cm SL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 94274)

Short description ສະລີລະວິທະຍາ | ການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…

ສັດທີ່ມີກະດູກສັນຫຼັງ: 54 - 56. This species can be diagnosed from all other trichomycterids (and, in the case of the former two characters, probably from all other catfishes) by three autapomorphic modifications: the pseudotympanus modified into a tympanic recess, visible as a deep, well-defined depression on the side of the head, and anteriorly connected via a superficial groove to the pterotic; absence of the laterosensory canal system on the body and head (except for the inner ear), reflected externally as a lack of sensory pores (except one modified pore incorporated into the tympanic recess and leading directly into the interior of the pterotic bone); and a supracleithrum not covering any portion of the lateral opening of the swimbladder capsule. It can be further distinguished from all its congeners by the following characters: absence of the anal fin (vs. presence); presence of one or two well-developed opercular odontodes (vs. absence); presence of anteroventral and dorsal processes of the opercle (vs. vestigial and absence, respectively). It further differs from both Typhlobelus macromycterus and T. guacamaya by having 4 branchiostegal rays (vs. 5 and 3, respectively); and from T. guacamaya and T. lundbergi by having some premaxillary teeth (vs. teeth absent) (Ref. 94274).

ຊີວະສາດ     ຄຳແປສັບ (ຕ.ຢ. epibenthic)

Collected during late afternoon at the peak of the southwestern Amazonian summer when rivers are at their lowest level. The site was a marginal sand bank forming a small island. Found in an area with moderate current (approx. 40 cm/sec), depths up to 35 cm, markedly warm water (30-33uC on the surface), horizontal transparency varied between 2.5 and 3.2 m and pH 6.5-7.0.

Life cycle and mating behavior ການຈະເລີນເຕັມໄວ | ການສືບພັນ | ການວາງໄຂ່ | ໄຂ່ | ຄວາມດົກຂອງໄຂ່ປາ | ຕົວອ່ອນ

Main reference Upload your references | ເອກະສານອ້າງອີງ | ຜູ້ປະສານງານ : Pinna, Mário de | ຜູ້ຮ່ວມມື

de Pinna, M.C.C. and J. Zuanon, 2013. The genus Typhlobelus: Monopoly and taxonomy, with description of a new species with a unique pseudotympanic structure (Teleostei: Trichomycteridae). Copeia 2013(3):441-453. (Ref. 94274)

IUCN Red List Status (Ref. 130435)

  Critically Endangered (CR) (B1ab(iii)+2ab(iii)); Date assessed: 01 February 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5312   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
ຊັ້ນເຂດຮ້ອນ (Ref. 69278):  3.1   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).