Mordacia mordax (Richardson, 1846)
Shorthead lamprey
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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. |
| Mordacia mordax AquaMaps Data sources: GBIF OBIS |
分类 / 名称 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Petromyzonti > Petromyzontiformes (Lampreys) > Mordaciidae (Southern topeyed lampreys)
Etymology: Mordacia: Etymology not explained, likely derived from mordax (L.), biting, referring to specific name of M. mordax (See ETYFish); mordax: Latin for biting, perhaps referring to its parasitic behavior and/or serrated, cutting teeth (See ETYFish).
More on author: Richardson.
Etymology: Mordacia: Etymology not explained, likely derived from mordax (L.), biting, referring to specific name of M. mordax (See ETYFish); mordax: Latin for biting, perhaps referring to its parasitic behavior and/or serrated, cutting teeth (See ETYFish).
More on author: Richardson.
环境：氛围 / 气候带 / 深度上下限 / 分布范围 生态学
分布 领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
Southern Ocean: Southeastern Australia from Shoalhaven River, New South Wales to Gulf of St. Vincent, South Australia.
南極海: 來自 Shoalhaven 河的澳洲東南部, 到聖文森，澳洲南部的灣的新南威爾斯。
南極海: 來自 Shoalhaven 河的澳洲東南部, 到聖文森，澳洲南部的灣的新南威爾斯。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 50.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5259); common length : 37.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5259)
Max length : 50.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5259); common length : 37.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5259)
简单描述 检索表 | 型态特徵 | 形态测量图
Adults: 11.3-43.2 cm TL; body proportions of pre-spawning specimens, as percentage of TL (based on 125 prespawning specimens measuring 11.3-42.1 cm TL): 8.5-11.3 prebranchial length, 7.1-9.8 branchial length, 60.4-68.3 trunk length, 14.4-20.1 tail length, 1.1-1.7 eye length and 4.9-6.6 disc length. Body proportions of spawning male specimens, as percentage of TL (based on 8 spawning males measuring 27.7-37.6 cm TL): 11.4-16.6 prebranchial length, 8.8-10.1 branchial length, 60.1-65.3 trunk length, 13.3-15.7 tail length, 8.1-11.2 disc length. Mature males with some loose skin in gular region. Urogenital papilla not prominent in mature adults; trunk myomeres, 84-96. Adult dentition: 2 triangular supraoral laminae each with 3 unicuspid teeth, 1 per apex; infraoral lamina, 7-9 unicuspid teeth of various size (these teeth become greatly enlarged with sexual maturation); 5-7 endolateral plates on either side each bearing 2-3 unicuspid teeth, usually 3; endolateral formula, typically 2-3-3-3-3-3 in immature individuals and 5-7 individual cusps on either side in mature individuals; 1 row of anterials; first row of anterials, 2 unicuspid teeth plus 1-2 bicuspid teeth or 3 unicuspid teeth flanked on either side by 1 bicuspid tooth; 1 row of exolaterals on each side; 1 row of posterials; first row of posterials, 12-14 posterial plates, the 2-4 lateralmost tricuspid and the internal ones bicuspid in immature individuals and 12-14 unicuspid teeth in mature individuals; transverse lingual lamina w-shaped, with 29 unicuspid teeth, the median one and the 2 subterminal ones slightly enlarged; longitudinal lingual laminae interrupted j-shaped, each with an undetermined number of unicuspid teeth. Velar tentacles in adults, 3-4, smooth. Body coloration (live) of immature adults brownish gray on dorsal surface and silvery on ventral surface; lateral line neuromasts darkly pigmented; caudal fin pigmentation, 25% to <75% coverage; caudal fin shape, spade-like; oral papillae, 25-45 (Ref. 89241).
Body shape (shape guide): eel-like.
Body shape (shape guide): eel-like.
Adults inhabit the sea for an undetermined period and are parasitic on fishes; enter freshwater to breed. Majority of adulthood is spent in estuaries or at sea. Upstream spawning migrants occur in fast-flowing sections of rivers with a mud, sand or silt substrate, sometimes seen congregated below barriers to upstream movement such as weirs. Ammocoetes live in slow-flowing streams, burrowed in mud or silt. Common length is 35-40 cm (Ref. 44894). Larval life is 3.5 yrs. During the spawning migration, adults burrow in the substrate of rivers during the day and migrate upstream during the night. Fecundity, 3,789-13,372 eggs/female. De Castelnau (1872) states that the adults from the lower Yarra River, Victoria, are considered good food (Ref. 89241).
成鱼栖息于海洋一个未确定的时期而且是寄生在鱼上; 进入淡水到繁殖。 成人期的多数被在河口或在海上花费。 向上游产卵移居者出现在河川流速快的河段具有一个泥，沙子或淤泥底部, 有时见到在对向上游的运动例如鱼梁的障碍之下聚集。 Ammocoetes 生活于缓慢流动的溪流，被泥中掘穴的或淤泥。 普遍的长度是 35-40 公分。 (参考文献 44894)
成鱼栖息于海洋一个未确定的时期而且是寄生在鱼上; 进入淡水到繁殖。 成人期的多数被在河口或在海上花费。 向上游产卵移居者出现在河川流速快的河段具有一个泥，沙子或淤泥底部, 有时见到在对向上游的运动例如鱼梁的障碍之下聚集。 Ammocoetes 生活于缓慢流动的溪流，被泥中掘穴的或淤泥。 普遍的长度是 35-40 公分。 (参考文献 44894)
生命周期和交配行为 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Semelparous (Ref. 89241).南極海: 來自 Shoalhaven 河的澳洲東南部, 到聖文森，澳洲南部的灣的新南威爾斯。
主要参考文献
上传您的参考资料 | 参考文献 | 合作者 | 合作者
Allen, G.R., 1989. Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey. (Ref. 5259)
CITES
Not Evaluated
对人类的威胁
无害处的
人类利用
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基于模型的估算
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系统发育多样性指数 (参考文献 82804) |
PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
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营养阶层 (参考文献 69278) |
4.3 ±0.8 se; based on size and trophs of closest relatives |
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回复力 (参考文献 120179) |
低的, 最小族群倍增时间4.5 - 14 年 (Semelparous species, assuming tm (= tmax) > 4). |
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渔业脆弱性 (Ref. 59153) |
Moderate vulnerability (41 of 100). 🛈 |