Mammalia |
Cetartiodactyla |
Delphinidae
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
大洋性; 海洋洄游的 (参考文献 75906); 深度上下限 0 - 1316 m (参考文献 116169). Tropical
208994 Tursiops truncatus gephyreus. Southwest Atlantic.
首次成熟时的长度 / 大小 / 重量 / 年龄
成熟度: Lm ?, range 240 - 260 cm Max length : 380 cm TL 雄鱼/尚未辨别雌雄; (参考文献 1394); 最大体重: 650.0 kg (参考文献 1394)
This coastal subspecies (Tursiops truncatus geyphyreus) can be distinguished from the nominate offshore subspecies (Tursiops truncatus truncatus) by the following diagnosable cranial features: W-shaped border of the antorbital notch (vs. U-shaped); barely or not visible interparietal bone (vs. clearly visible); cranial vertex from the posterior end of nasals to the nuchal crest is short and rectangular (vs. long and squared); left nasal bone noticeably smaller and more compressed antero-posteriorly than the right (vs. nearly symmetrical); Falciform lateral margin of the ascending process of right premaxilla (vs. straight or slightly concave); lateral margin of the ascending process of the maxillae over the preorbital process is deflected dorsally (vs. flat) (Ref. 128824).
Preyed upon by great white sharks (Ref. 32140). Dolphins are directly caught for use as shark-bait in Sta. Ana and Aparri, Philippines (Ref. 77119). Found primarily in coastal and inshore regions of tropical and temperate waters of the world (Ref. 936) and deeper channels between islands (Ref. 122680). Also inhabits pelagic waters, such as those in the eastern tropical Pacific (Ref. 936). In herds of less than 20 individuals (Ref. 801). Feeds either cooperatively or in solitary. They can obtain prey via 'fish whacking' and steering fish onto mudflats (Ref. 122680). Feeds on fish (Refs. 801, 936) crustaceans, and cephalopods (Ref. 801).
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
主要参考文献
参考文献 | 合作者 | 合作者
Tan, J.M.L. 1995 A Field Guide to the Whales and Dolphins in the Philippines. Makati City: Bookmark. 125 p. (参考文献 936)
对人类的威胁
人类利用
渔业: 商业性; 诱饵: usually
FAO - 渔业: 着陆, 物种外形 | FishSource |
工具
更多信息
人口动态成长最大年龄/尺寸长度-重量关系长短关系体长-频率质量转换丰度
网络资源
基于模型的估算
首选温度
(Ref.
115969): 6.4 - 28.9, mean 20.3 (based on 16698 cells).
渔业脆弱性
Very high vulnerability (76 of 100).
价格分类
Unknown.
