Reproduction of Lamna nasus
Document source: http://www.fishbase.in/Reproduction/FishReproSummary.php?ID=88&GenusName=Lamna&SpeciesName=nasus&fc=9&StockCode=103
 
Main Ref. Gilmore, R.G., 1993
Mode dioecism
Fertilization internal (oviduct)
Mating type
Spawning frequency
Spawning aggregation Ref.  
Batch spawner Ref.  
Reproductive guild bearers
internal live bearers
Parental Care
Description of life cycle and mating behavior Distinct pairing with embrace (Ref. 205). Ovoviviparous (aplacental viviparity), with uterine cannibalism (embryos feeding on other ova produced by the mother (oophagy) after the yolk sac is absorbed) (Ref. 43278, 50449). With 1-5 (usually 4) pups in a litter (Ref. 6871, 43278). Reproduction probably yearly (Ref. 45602). In the northeast Atlantic, breeding grounds are off the coast of Europe and the British Isles. Embryos found in mature females throughout the year except from July to September. Mating occurs in late summer, pups are born in the spring of the following year (Ref. 43278). Gestation may last 8-9 months. Size at birth 60-80 cm TL (Ref. 6871, 43278).
Search for more references on reproduction Scirus
(e.g. 9948)
( e.g. cephalopods )
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