. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. PACIFIC SLEEPER SHARK 121 specimen which is believed to be the heaviest recorded individual, weighing 888 + kg. The weight of this specimen is underestimated since its weight exceeded the scale's maximum capacity of 888 kg. We are unable to explain the weight discrepancy between the 401 cm tl and 430 cm tl specimens. The 430 cm tl specimen was apparently mature, but may have spontaneously aborted her eggs during capture or may even ha
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. PACIFIC SLEEPER SHARK 121 specimen which is believed to be the heaviest recorded individual, weighing 888 + kg. The weight of this specimen is underestimated since its weight exceeded the scale's maximum capacity of 888 kg. We are unable to explain the weight discrepancy between the 401 cm tl and 430 cm tl specimens. The 430 cm tl specimen was apparently mature, but may have spontaneously aborted her eggs during capture or may even had recently given birth, which might account for the reduced ovaries and low weight. Isaacs and Schwartzlose (1975) mention larger specimens photographed in deep water off southern California and Baja California estimated at 5 to 8 m long. 800 600 o> D> ® 400- 200- Somniosus paclficus N = 15 y = 24 + ( X 10"') {X) - ( x 10 • = Juvenile A= Adult. 100 200 300 Total Length (cm) 400 500 FIGURE 2. Length-weight relationship for 15 female Somniosus pacificus. Data on male Pacific sleeper sharks is limited since only two specimens were recorded. One was an immature specimen, 163 cm tl, that washed ashore at a Monterey beach ( Lea, Calif. Dept. Fish and Game, pers. comm.). This particular individual had a gaff wound to its head indicating that it probably had been discarded by a fisherman. The only published record of a male Pacific sleeper shark was an adult, 397 cm tl, reported by Phillips (1953). Prey items were identified from the stomach contents of seven Pacific sleeper sharks. Several beaks of the cephalopod, Octopoteuthis deletron, were found in a cm TL specimen; the gut remains of four other specimens contained unidentified cephalopod beaks. A cm tl specimen contained two partially digested shortspine thornyheads, Sebastolobus alascanus. The remains of two albacore, Thunnus alalunga, were found in the stomach of a 401 cm tl specimen. Pacif
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