Hypanus marianae, Brazilian large-eyed stingray

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Hypanus marianae (Gomes, Rosa & Gadig, 2000)

Brazilian large-eyed stingray
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Hypanus marianae   AquaMaps   Data sources: GBIF OBIS
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Image of Hypanus marianae (Brazilian large-eyed stingray)
Hypanus marianae
Picture by Sazima, I.

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

ກຸ່ມປາກະດູກອ່ອນ (ເຊັ່ນ: ປາສະຫລາມ, ປາຜາໄລ) (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays) > Dasyatinae
Etymology: marianae: Named for Mariana R. Oliveria, daughter of Otto B.F. Gadig..

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

ສັດທະເລ ອາໄສຢູ່ໃກ້ໜ້າດິນໃຕ້ພື້ນທ້ອງນ້ຳ; ລະດັບຄວາມເລິກ 2 - 15 m (Ref. 36974). Tropical; 0°S - 19°S, 38°W - 45°W (Ref. 36974)

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

Southwest Atlantic: along the northeastern Brazilian coast, from the state of Maranhão to southern Bahia.

ຂະໜາດ / ນ້ຳໜັກ / Age

Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm WD ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 36974)

Short description ສະລີລະວິທະຍາ | ການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…

This medium-sized species of Dasyatis is distinguished by the following characters: horizontal diameter of eye nearly equal to interorbital width and spiracle length; its tail is relatively short, less than two times disk width, distally filiform, with dorsal and ventral finfolds, ending approximately on same vertical line; height of dorsal finfold 1.5-2 in height of ventral finfold; the dorsal surface of disc is yellowish brown, with dark blotch between spiracles and two pairs of dark scapular and precaudal blotches; margins of disc and pelvic fins are blue dorsally; the ventral surface of disc white, with two symmetrical pairs of dark markings in adults (Ref. 36974).

ຊີວະສາດ     ຄຳແປສັບ (ຕ.ຢ. epibenthic)

Apparently associated with coral or sandstone reefs of the northeastern Brazilian continental shelf. Two female specimens were collected from the stomach of Rachycentron canadum (Ref. 36974). Juveniles also occurred in sandy beaches and estuaries. Ovoviviparous (Ref. 50449).

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

Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Distinct pairing with embrace (Ref. 205). A gravid female aborted one fully formed embryo (Ref. 36974).

Main reference Upload your references | ເອກະສານອ້າງອີງ | ຜູ້ປະສານງານ : McEachran, John | ຜູ້ຮ່ວມມື

Gomes, U.L., R.S. Rosa and O.B.F. Gadig, 2000. Dasyatis marianae sp. n.: a new species of stingray (Chondrichthyes: Dasyatidae) from the southwestern Atlantic. Copeia 2000(2):510-515. (Ref. 36974)

IUCN Red List Status (Ref. 130435)

  Endangered (EN) (A2cd); Date assessed: 01 July 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





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ການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…
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Electrophoreses
ການຖ່າຍທອດທາງກຳມະພັນຈາກພໍ່ແມ່ຫາລູກ
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Estimates based on models

Preferred temperature (Ref. 123201): 27 - 27.9, mean 27.4 °C (based on 44 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00715 - 0.01930), b=3.10 (2.96 - 3.24), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
ຊັ້ນເຂດຮ້ອນ (Ref. 69278):  3.5   ±0.5 se; based on size and trophs of closest relatives
ຄວາມຢືດຢຸ່ນ (Ref. 120179):  ຕຳ່ຫຼາຍ, ປະຊາກອນຕຳ່ສຸດທີ່ໃຊ້ເວລາສອງເທົ່າຫຼາຍກວ່າ 14 ປີ (Fec=2).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).