Conjoined Fetal Twins in a Harbor Seal (Phoca vitulina)

Jennifer K. Olson; Joseph K. Gaydos; Tori McKlveen; Robert Poppenga; Kay Wicinas; Elizabeth Anderson; Stephen Raverty

doi:10.7589/2015-02-045

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Jennifer K. Olson,^1,* Joseph K. Gaydos,² Tori McKlveen,³ Robert Poppenga,⁴ Kay Wicinas,^1,2 Elizabeth Anderson,^1,2 Stephen Raverty⁵

¹1The Whale Museum, 62 First Street N, PO Box 945, Friday Harbor, Washington 98250, USA
²2SeaDoc Society, UC Davis Karen C. Drayer Wildlife Health Center–Orcas Island Office, 942 Deer Harbo
³3VCA Veterinary Specialty Center of Seattle, 20115 44th Avenue W, Lynwood, Washington 98036, USA
⁴4California Animal Health and Food Safety Toxicology Laboratory, UC Davis School of Veterinary Medic
⁵5Animal Health Center, 1767 Angus Campbell Road, Abbotsford, British Columbia, Canada V3G 2M3

^*Corresponding author (email: jennifer@whalemuseum.org)

Abstract

In July 2013, a stranded harbor seal (Phoca vitulina) died giving birth to conjoined fetuses. The twins were joined at the abdomen and thoracolumbar spine with the vertebral axis at 180°. The cause of this unique anomaly—a first for this species—was not identified.

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Jennifer K. Olson, Joseph K. Gaydos, Tori McKlveen, Robert Poppenga, Kay Wicinas, Elizabeth Anderson, and Stephen Raverty "Conjoined Fetal Twins in a Harbor Seal (Phoca vitulina)," Journal of Wildlife Diseases 52(1), 173-176, (22 December 2015). https://doi.org/10.7589/2015-02-045

Received: 18 February 2015; Accepted: 1 June 2015; Published: 22 December 2015

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