Environmental Biology of Fishes

, Volume 38, Issue 1–3, pp 139–149

The storage of spermatozoa in the oviducal glands of western North Atlantic sharks

  • Harold L. PrattJr.


Spermatozoa stored in oviducal glands of sharks sampled off the North American east coast were revealed by viewing stained tissue sections using light microscopy. Of eleven species surveyed, sperm were found in nine:Alopias vulpinus, Lamna nasus, Carcharhinus obscurus, Carcharhinus plumbeus, Galeocerdo cuvieri, Prionace glauca, Rhizoprionodon terraenovae, Sphyrna lewini andSphyrna tiburo. Three insemination patterns are proposed to account for differences noted in these findings: (1) non-storage/immediate insemination for sharks such asLamna nasus; (2) short-term storage/delayed insemination as found in sharks in which ovulation is prolonged over weeks or months such asRhizoprionodon terraenovae, and (3) long-term storage/repeated insemination, a characteristic of nomadic sharks such asPrionace glauca andCarcharhinus obscurus which can store sperm in specialized tubules for months to years.

Key words

Insemination Elasmobranchs Sperm Nidamental or shell glands Lamniformes Carcharhiniformes 


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Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • Harold L. PrattJr.
    • 1
  1. 1.National Oceanic and Atmospheric Administration, National Marine Fisheries ServiceNortheast Fisheries Science Center, Narragansett LaboratoryNarragansettU.S.A.

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