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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Pliotrema warreni AquaMaps Data sources: GBIF OBIS |
上傳你的 相片 和 影像
照片 | Google 影像![Image of Pliotrema warreni (Warren\](/images/thumbnails/jpg/tn_Plwar_f0.jpg "Image of Pliotrema warreni (Warren\")
Pliotrema warreni
Female 拍攝者 Weigmann, S.
照片 | Google 影像
Female 拍攝者 Weigmann, S.
分類 / 名稱 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii 板鰓亞綱 (鯊魚與魟魚) (sharks and rays) > Pristiophoriformes (Saw sharks) 鋸鯊目 (Saw sharks) > Pristiophoridae (Saw sharks) 鋸鯊科 (Saw sharks)
Etymology: Pliotrema: pleion (Gr.), more; trema (Gr.), hole, referring to six gill slits compared with five in Pristiophorus (See ETYFish); warreni: In honor of English-born South African zoologist Ernest Warren (1871-1945), Director, Natal Government Museum (Pietermaritzburg), who sent specimens to the British Museum (See ETYFish).
Eponymy: Professor Dr Ernest Warren (1871–1945) was an English zoologist who moved to Natal (1903) and became first Director of the Natal Museum, Pietermaritzburg (1903–1935). [...] (Ref. 128868), visit book page.
More on author: Regan.
Etymology: Pliotrema: pleion (Gr.), more; trema (Gr.), hole, referring to six gill slits compared with five in Pristiophorus (See ETYFish); warreni: In honor of English-born South African zoologist Ernest Warren (1871-1945), Director, Natal Government Museum (Pietermaritzburg), who sent specimens to the British Museum (See ETYFish).
Eponymy: Professor Dr Ernest Warren (1871–1945) was an English zoologist who moved to Natal (1903) and became first Director of the Natal Museum, Pietermaritzburg (1903–1935). [...] (Ref. 128868), visit book page.
More on author: Regan.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學
海洋 居於水底的; 深度上下限 10 - 915 m (Ref. 122027), usually 60 - 430 m (Ref. 122027). 亞熱帶的; 22°S - 37°S, 19°E - 45°E (Ref. 54706)
分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Western Indian Ocean: off Madagascar and from southern Mozambique to Cape Agulhas, South Africa.
西印度洋: 外海的馬達加斯加與從莫三比克南部到南非的 Agulhas 角。
西印度洋: 外海的馬達加斯加與從莫三比克南部到南非的 Agulhas 角。
初熟時的長度 / 大小 / 重量 / 年齡
簡短描述 檢索表 | 型態特徵 | 形態測量圖
This large six-gilled sawshark is distinguished by the following characters: barbel origin to anterior nostrils 1.4-1.6 times anterior nostrils to symphysis upper jaw; prenarial length 1.3-1.4 times prebarbel length; preoral length 1.8-2.3 times interdorsal space; pectoral-fin anterior margin 1.4-1.5 times dorsal-caudal space; mouth width 3.1-3.9 times spiracle length; the first dorsal fin originates about opposite pectoral-fin free rear tips; lateral trunk dermal denticles tricuspidate, rather flat and imbricated. monospondylous centra 53-56; precaudal diplospondylous centra 4-51; total vertebral centra 154-158; rostrum not constricted between barbel origin and nostrils and barbels that are situated about two thirds way from rostral tip to mouth, with prebarbel length about twice, i.e. 1.7-2.1 times, distance from barbel origin to symphysis of upper jaw (vs. barbels situated about half way from rostral tip to mouth, with prebarbel length about equal, i.e. 1.0-1.1 times, distance from barbel origin to symphysis of upper jaw), prebarbel length 60.2-68.0% (vs. 49.4-52.9% of preoral length), preoral length 1.5-1.7 (vs. 1.9-2.0 times prebarbel length), prenarial length 1.3-1.4 (vs. 1.5-1.7 times prebarbel length). Colouration: medium to dark brown dorsally with a pronounced yellowish longitudinal stripe; uniform white ventrally; the dorsal rostrum surface with two distinct longitudinal dark stripes, lateral rostral teeth dark-edged (Ref. 122027).
Cross section: angular.
唯一的鯊魚有一個鋸狀的吻與 6 對鰓縫。 (參考文獻 5578) 背面灰褐色, 腹面白色的.(參考文獻 6587)
Cross section: angular.
唯一的鯊魚有一個鋸狀的吻與 6 對鰓縫。 (參考文獻 5578) 背面灰褐色, 腹面白色的.(參考文獻 6587)
Found on the continental shelf and upper slope to at least 430 m (Ref. 247). Feeds on bony fish, also shrimp, mysids and squid (Ref. 5578). Ovoviviparous (Ref. 50449), with 5 to 7 young in a litter (Ref. 247). Probably uses its saw to stun and kill prey (Ref. 5578). Sometimes caught by sports anglers (Ref. 5578).
棲息於大陸棚與上層斜坡到至少 430 公尺了。 (參考文獻 247) 吃硬骨魚，也捕食蝦，糠蝦與烏賊。 (參考文獻 5578) 卵胎生的 (參考文獻 50449),5 到 7 幼魚在一胎.(參考文獻 247) 可能使用它的鋸子打昏並且殺獵物。 (參考文獻 5578) 有時被運動垂釣者捕獲了。 (參考文獻 5578)
棲息於大陸棚與上層斜坡到至少 430 公尺了。 (參考文獻 247) 吃硬骨魚，也捕食蝦，糠蝦與烏賊。 (參考文獻 5578) 卵胎生的 (參考文獻 50449),5 到 7 幼魚在一胎.(參考文獻 247) 可能使用它的鋸子打昏並且殺獵物。 (參考文獻 5578) 有時被運動垂釣者捕獲了。 (參考文獻 5578)
生命週期和交配行為 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Ovoviviparous, with 5 to 7 young in a litter (others have 7 to 17 developing eggs). Size at birth about 35 cm. Embryos feed solely on yolk (Ref. 50449).西印度洋: 外海的馬達加斯加與從莫三比克南部到南非的 Agulhas 角。
主要參考資料
上傳您的推薦信 | 參考文獻 | 合作者 : Compagno, Leonard J.V. | 合作者
Weigmann, S., O. Gon, R.H. Leeney, E. Barrowclift, P. Berggren, N. Jiddawi and A.J. Temple, 2020. Revision of the sixgill sawsharks, genus Pliotrema (Chondrichthyes, Pristiophoriformes), with descriptions of two new species and a redescription of P. warreni Regan. PLoS ONE, 15 (3)[0228791]:1-56. (Ref. 122027)
CITES
Not Evaluated
對人類具威脅
無害處的
人類使用
漁業: 沒有興趣; 游釣魚種: 是的
FAO - 漁業: 魚種描繪; Publication: search | FishSource |
更多資訊
解剖學
鰓區
腦部
耳石
鰓區
腦部
耳石
生理學
身體成分
營養素
耗氧量
游泳類型
游泳速度
視覺色素
魚聲
疾病與寄生蟲
毒性 (LC50s)
身體成分
營養素
耗氧量
游泳類型
游泳速度
視覺色素
魚聲
疾病與寄生蟲
毒性 (LC50s)
遺傳學
基因組
遺傳學
異種性
遺傳率
遺傳多樣性
基因組
遺傳學
異種性
遺傳率
遺傳多樣性
工具
特別的報告
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網路資源
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | 檢查 FishWatcher | CISTI | Catalog of Fishes: 屬, 種 | DiscoverLife | ECOTOX | FAO - 漁業: 魚種描繪; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | 樹狀分類階層 | Wikipedia: 去, 搜尋 | World Records Freshwater Fishing | Zoobank | 動物學的記錄
基於模型的估計
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系統發育多樣性指數 (參考文獻 82804) |
PD50 = 0.6270 [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). |
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營養階層 (參考文獻 69278) |
4.2 ±0.6 se; based on diet studies. |
|
回復力 (參考文獻 120179) |
非常低的, 最小族群倍增時間超過14 年 (Fec=5). |
|
釣魚的脆弱性 (Ref. 59153) |
High to very high vulnerability (75 of 100). 🛈 |