Oceanic species (Ref. 247). Epi- to bathypelagic at 1-3500 m (Ref. 58302). Makes diurnal vertical migrations from below 1,000 m in the day to or near the surface at night (Ref. 6871, 58302). Travels long vertical distances in excess of 2,000 to 3,000 m on a diel cycle (Ref. 247). Feeds free-living deepwater prey such as large squid, gonostomatids, crustaceans but is also a facultative ectoparasite on larger pelagic animals such as wahoo, tuna, billfishes, and cetaceans (Ref. 247). Ovoviviparous (Ref. 205), with 6-12 young per litter (Ref. 48844). The cookiecutter shark has specialized suctorial lips and a strongly modified pharynx that allow it to attach to the sides of it prey (Ref. 247). It then drives its saw-like lower dentition into the skin and flesh of its victim, twists about to cut out a conical plug of flesh, then pull free with the plug cradled by its scoop-like lower jaw and held by the hook-like upper teeth (Ref. 247). Teeth are shed as a complete unit; the lower teeth are swallowed, perhaps to maintain sufficient calcium levels in its body (Ref. 247). Interconnection at the bases of individual tooth allows a whole row of teeth to move if one tooth is touched. This shark is reported to radiate light for as long as three hours after its death. Not dangerous to people because of its small size and habitat preferences (Ref. 247).
大洋性魚種.(參考文獻 247) Epi- 對底棲大洋性在 1-3500 公尺.(參考文獻 58302) 作每日垂直迴游從下方在白天的 1,000 公尺到或晚上接近水表面處.(參考文獻 6871,58302) 在一個日週期性的周期上移動超過 2,000 到 3,000 公尺的長垂直的距離。 (參考文獻 247) 為食獨立生存的深水獵物例如大的烏賊,鑽光魚, 甲殼動物但是也是一個在比較大的大洋性的動物上的官能性體外寄生動物例如刺鱍,鮪魚,青旗魚與鯨類.(參考文獻 247) 卵胎生的 (參考文獻 205), 6-12個幼魚每胎.(參考文獻 48844) 雪茄鯊已經特殊化吸吮式嘴唇與一個讓它吸附到獵物的體側的強化的咽喉。 (參考文獻 247) 它然後進入皮膚與它的受害者的肉之內駕駛它的像鋸子一樣下顎齒,扭曲到處剪下一個肉的錐形栓塞, 然後用它的像鏟子一樣的下頜以栓子的支架拉住而且維持藉由鉤狀的上顎齒.(參考文獻 247) 齒被流出作為一個完全的單位; 下面的齒被吞, 也許在它的身體維持充份的鈣水平.(參考文獻 247) 如果一個牙齒是,連結在個別牙齒的牙根讓齒的整個列移動接觸。 這一隻鯊魚被報告達長達三小時在它的死亡之後發光。 沒有危險性對人由於它的體型小與棲息地偏愛.(參考文獻 247)
Preferred temperature (Ref.
115969): 3.1 - 9.7, mean 4.8 (based on 2327 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7520 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00141 - 0.00976), b=3.12 (2.89 - 3.35), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 4.3 ±0.3 se; based on diet studies.
回復力 (Ref.
120179): 非常低的, 最小族群倍增時間超過14 年 (Fec = 6).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (42 of 100).