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Scyliorhinus ugoi  Soares, Gadig & Gomes, 2015

Dark freckled catshark
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分類 / Names 俗名 | 同種異名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鰓亞綱 (鯊魚與魟魚) (sharks and rays) > Carcharhiniformes (Ground sharks) > Scyliorhinidae (Cat sharks)
Etymology: Scyliorhinus: Greek, skylla = a kind of shark + Greek, rhinos = nose (Ref. 45335);  ugoi: Named for the son of Ulisses L. Gomes, Ugo de Luna Gomes.

環境 / 氣候 / 範圍 生態學

; 海洋 居於水底的; 深度上下限 400 - 500 m (Ref. 101269).    , preferred ?; 5°S - 17°S, 37°W - 39°W (Ref. 101269)

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Southwest Atlantic: Brazil.

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 53.4 cm TL 雄魚/尚未辨別雌雄; (Ref. 101269); 63.0 cm TL (female)

簡短描述 型態特徵 | 形態測量圖

This species is distinguished by the following characters: head considerably broad (vs. slender in the S. haeckelii/besnardi group and S. hesperius); with brown saddles on a light brown background, predorsal saddles with anterior and posterior sharp median projections (vs. no projections in the S. haeckelii/besnardi group or S. hesperius) and light and dark, spiracle-sized or slightly smaller spots, no large white spots (vs. large white spots in S. hesperius); also, the snout is rounded and moderately short, preoral length 5% TL (vs. 4.5% TL in the S. haeckelii/besnardi group); preorbital length 6.4% TL and head length 20% TL (vs. 5% TL and 18% TL in S. hesperius); mouth width 9% TL (vs. 8% TL in the S. haeckelii/besnardi group and 7.2% TL in S. hesperius); pectoral-pelvic space 1.5 times pelvic-anal space (vs. equal in the S. haeckelii/besnardi group), and interdorsal space 2.3 times dorsal-caudal space (vs. 1.6 times in S. haeckelii/besnardi group); anal-fin base 8% TL (vs. 6.7% TL in S. hesperius, 8.3% TL in the S. haeckelii/besnardi group); cranium with flat basal plate, without keels; cranial width larger in females 42.7% NL (vs. 37.4% NL in S. haeckelii/besnardi group); with a terminal dermal cover in hindmost portion of clasper, covering terminal cartilages (none in S. hesperius); medium-sized, adult male at 44.5 cm TL and adult female 50.0 cm TL (vs. 35.3 cm and 41.0 cm, respectively, for the S. haeckelii/besnardi group) (Ref. 101269).

生物學特性     字彙 (例如 epibenthic)

Recorded specimens are mostly demersal, about 400-500 m deep, and associated with coral formations, where it possibly lays its egg-cases. Stomach contents consist of small invertebrates (cephalopods), small bony fishes, and one hagfish (Class Myxini) egg-case which was found in the stomach of an adult specimen. The size at first maturity is not well defined, but 45.0 cm TL males and 47.0 cm TL females are adults. Reproduction is by oviparity, with at least two amber colored egg capsules (one for each uterus) which are smooth, lacking longitudinal grooves and measuring about 15.2 cm long and 5.8 cm wide (Ref. 101269).

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚


主要參考資料 Upload your references | 參考文獻 | 合作者 : Compagno, Leonard J.V. | 合作者

Soares, K.D.A., O.F.B. Gadig and U.L. Gomes, 2015. Scyliorhinus ugoi, a new species of catshark from Brazil (Chondrichthyes: Carcharhiniformes: Scyliorhinidae). Zootaxa 3937(2):347-361. (Ref. 101269)

IUCN 瀕危狀態 (Ref. 115185)

  未評估 

CITES (Ref. 94142)

Not Evaluated

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