Squalus formosus White & Iglésias, 2011

Taiwan spurdog
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Image of Squalus formosus (Taiwan spurdog)
Squalus formosus
No image available for this species;
drawing shows typical fish in this Family.

klasifikasi / Names Nama-nama umum | Sinonim (persamaan) | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Ikan bertulang rawan (sharks and rays) > Squaliformes (Bramble, sleeper and dogfish sharks) > Squalidae (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436);  formosus: The epithet formosus is based on the Portuguese word Formosa, an alternative name for Taiwan, in allusion to the type locality of this species.

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

; laut.   Subtropical

Penyebaran Negara-negara | Daerah-daerah FAO | Ecosystems | Kemunculan | Point map | Introduksi | Faunafri

Pacific Ocean: Taiwan and Japan. Type specimens were collected from the fish landing site at Tashi (c. 24‹ 50Œ S) in north-eastern Taiwan, but depth of capture unknown. Also recorded from waters off Kyushu (c. 32‹ N) and Shikoku (c. 33‹ 20Œ N) (Chen et al., 1979).(Ref. 87791).

Size / Weight / umur

Maturity: Lm ?  range ? - ? cm
Max length : 73.4 cm TL jantan/; (Ref. 87791); 81.4 cm TL (female)

deskripsi pendek Morfologi | Morfometrik

A medium-sized species of Squalus of the ‘highfin megalops group’ is characterized by the following combination of characters: snout relatively short; first dorsal fin tall and upright, upper posterior margin almost straight; caudal fin with broad white posterior margin, no dark caudal bar; flank denticles tricuspid. These characters clearly differentiate this species from the three other sympatric Squalus species. Squalus formosus is morphologically closest to S. albifrons from eastern Australia but differs in the following characters: first dorsal fin with a distinct, broad white anterior margin (v. no distinct white marking); second dorsal fin height 5.7–6.4 v. 4.3–5.1% LT; first dorsal fin height 9.0–10.5 v. 7.7–8.9% LT, anterior margin 12.4–14.6 v. 10.9–12.7% LT; eye slightly larger 4.8–5.3 v. 4.4–4.8% LT. Squalus formosus can be further distinguished from other Squalus species in the following combination of characters: pre-second dorsal length 3.7–4.4 times pectoral-fin anterior margin; preoral length 2.2–2.3 times horizontal prenarial length; head length 4.0–4.7 times eye length; interorbital width 1.4–1.6 times horizontal preorbital length; posterior margin of second dorsal fin deeply concave; second dorsal-fin spine with a broad base; dorsal surface of head dark, sharply demarcated from paler ventral surface; 45–46 monospondylous centra, 94–95 precaudal centra, 123–124 total centra; adult maximum size at least 73 cm LT (Ref. 87791).

Biologi     Daftar kata (contoh epibenthic)

Life cycle and mating behavior Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva

Distinct pairing with embrace (Ref. 205).

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White, W.T. and S.P. Iglésias, 2011. Squalus formosus, a new species of spurdog shark (Squaliformes: Squalidae), from the western North Pacific Ocean. J. Fish Biol. (Ref. 87791)

Status IUCN Red List (Ref. 120744)


CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

ancaman kepada manusia

  Harmless





penggunaan manusia

FAO(Publication : search) | FishSource |

informasi lanjut

Negara-negara
Daerah-daerah FAO
Ecosystems
Kemunculan
Introduksi
Stocks
Ekologi
Makanan
Bahan makanan
Konsumsi makanan
Jatah
Nama-nama umum
Sinonim (persamaan)
metabolisme
Pemangsa
Ekotoksikologi
Reproduksi, perkembang biakan
Kematangan
Pemijahan
Spawning aggregation
Fecundity
telur-telur
pekembangan telor
Umur / Saiz
Pertumbuhan
panjang-berat
panjang-panjang
ukuran frekuensi
Morfometrik
Morfologi
Larva
Dinamika larva
pemulihan
Kelimpahan
Acuan
Budidaya air
profil budidaya air
Strain
Genetika
Frekuensi alel
Diturunkan
Penyakit-penyakit
Pengolahan
Mass conversion
mitra
Gambar
Stamps, Coins Misc.
Suara-suara
Ciguatera
Kecepatan
Tipe renang
Area insang
Otoliths
Otak
Penglihatan / visi

Alat, peralatan

laporan khas

muat turun XML

Sumber internet

Aquatic Commons | BHL | Cloffa | Websites from users | semak peneliti ikan | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genom, Nukleotida) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Pangkalan data nasional | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia(pergi, Cari) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00153 - 0.00716), b=3.09 (2.91 - 3.27), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.3   ±0.4 se; Based on size and trophs of closest relatives
Daya lenting (Ref. 120179):  Rendah, Waktu penggandaan populasi minimum 4.5 - 14 tahun ().
keancaman (Ref. 59153):  High to very high vulnerability (68 of 100) .