Polydactylus luparensis Lim, Motomura & Gambang, 2010
Sarawak Giant Threadfin
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Polydactylus luparensis
拍攝者 Lim, A.P.K.
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拍攝者 Lim, A.P.K.
分類 / 名稱 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei > Carangaria/misc (Various families in series Carangaria) 鱸形目 (Various families in series Carangaria) > Polynemidae (Threadfins) 馬鮁科 (Threadfins)
Etymology: Polydactylus: Greek, poly = a lot of + greek, daktylos = finger (Ref. 45335); luparensis: The specific name luparensis is based on the Batang Lupar River in reference to the holotype locality. Local name of this species is Gemian.
Etymology: Polydactylus: Greek, poly = a lot of + greek, daktylos = finger (Ref. 45335); luparensis: The specific name luparensis is based on the Batang Lupar River in reference to the holotype locality. Local name of this species is Gemian.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學
; 淡水 大洋性; 深度上下限 3 - 5 m (Ref. 83753). ; 2°N - 1°N, 111°E - 112°E
分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Asia: Malaysia, Borneo. Currently known only from the mouth of the Batang Lupar River, Borneo, Malaysia (Ref. 83753).
大小 / 重量 / 年齡
簡短描述 檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 9; 背的軟條 (總數) : 13; 臀棘: 3; 臀鰭軟條: 11. A species of Polydactylus that differs from all of its congeners by the following combination of characters: 8 dorsal-fin spines, first spine tiny, second spine very strong (its width more than 5 times of width of remaining spines); 13 second dorsal-fin soft rays; 11 anal-fin soft rays; 12 pectoral-fin rays, its length 22–24% (mean 23%) of SL, posterior tip not reaching a vertical through posterior tip of depressed pelvic fin; 6 pectoral filaments, fourth or fifth filament longest, its length 77–85% (mean 81%) of SL, posterior tip extending slightly beyond caudal-fin base; pored lateral-lined scales 67–75 (mean 71); lateral line unbranched, extending onto upper end of lower caudal-fin lobe; 6 scale rows above lateral line, 8 below; 14 gill rakers on upper limb, 18 on lower limb, 32 in total; occipital profile concave; posterior margin of maxilla extending considerably beyond a vertical through posterior margin of adipose eyelid; depth of posterior margin of maxilla 4–5% (mean 5%) of SL, greater than orbit diameter; well-developed swimbladder present; basal half of third to sixth pectoral filament white, becoming black distally. Polydactylus luparensis can be easily distinguished from all Indo-Pacific congeners by having the black distal half of the third to sixth pectoral filaments (whitish in the latter). Only two other taxa, Polynemus melanochir dulcis Motomura & Sabaj, 2002 and P. melanochir melanochir Valenciennes in Cuvier & Valenciennes, 1831, in the family Polynemidae have the black pectoral filaments (Motomura & Sabaj, 2002; Motomura, 2004b) (Ref. 83753).
Inhabiting turbid brackish water. The species is abundant in the river mouth especially from June to August and mainly caught by gill nets. Juveniles have also been observed in the same place (local fishermen, pers. comm.) (Ref. 83753).
生命週期和交配行為 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
主要參考資料
上傳您的推薦信 | 參考文獻 | 合作者 | 合作者
Lim, P.K.A., H. Motomura and A.C. Gambang, 2010. Polydactylus luparensis, a new species of threadfin (Perciformes: Polynemidae) from the Batang Lupar River, Sarawak, Borneo, Malaysia. Zootaxa 2405:63-68. (Ref. 83753)
CITES
Not Evaluated
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人類使用
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更多資訊
營養生態學
食物項目（獵物）
食性組成
食物消耗量
食物配給
捕食者
食物項目（獵物）
食性組成
食物消耗量
食物配給
捕食者
生態學
生態學
生態學
人口動態
成長參數
最大年齡/尺寸
長度重量比
長度關係
長度-頻率
質量轉換
入添量
豐度
成長參數
最大年齡/尺寸
長度重量比
長度關係
長度-頻率
質量轉換
入添量
豐度
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 - 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 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00537 (0.00262 - 0.01101), b=3.06 (2.88 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
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營養階層 (參考文獻 69278) |
3.8 ±0.5 se; based on size and trophs of closest relatives |
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回復力 (參考文獻 120179) |
中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.). |
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釣魚的脆弱性 (Ref. 59153) |
Moderate to high vulnerability (46 of 100). 🛈 |