Cephalopod remains from the stomach of a sperm whale stranded off Patagonia
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Abstract
The stomach of a male sperm whale (Physeter macrocephalus) stranded near Comodoro Rivadavia, Argentina, on 21 March 1986, contained 247 cephalopod beaks (128 upper and 119 lower). The lower beaks were identified, their rostral lengths were measured and used to estimate the mantle lengths and wet weight of the representatives of each cephalopod taxon. Fifteen species from nine families were represented. The most numerous species, in order of decreasing abundance, were the large cranchiidMesonychoteuthis hamiltoni (32.8% of total numbers),Mastigoteuthis sp. A (16.0%), andKondakovia longimana andHistioteuthis atlantica (both 13.5%). Almost 85% of the estimated total weight was contributed by two species,Mesonychoteuthis hamiltoni (61.6%) andK. longimana (23.1%). The presence of beaks fromK. longimana, Alluroteuthis antarcticus andM. hamiltoni, which are all thought to be restricted to the Antarctic, suggests that the whale had migrated North prior to stranding.
Keywords
Argentina Total Weight Numerous Species Sperm Whale Mantle LengthPreview
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Literature cited
- Clarke, M. R. (1980). Cephalopods in the diet of sperm whales of the southern hemisphere and their bearing on sperm whale biology. ‘Discovery’ Rep. 37: 1–324Google Scholar
- Clarke, M. R. (1983). Cephalopod biomass — estimation from predation. Mem. natn. Mus. Vict. 44: 95–107Google Scholar
- Clarke, M. R. (1985). Cephalopods in the diet of cetaceans and seals. Rapp. P.-v. Réun. Commn int. Explor. Mer Méditerr. 29: 211–219Google Scholar
- Clarke, M. R. (ed.) (1986). A handbook for the identification of cephalopod beaks. Oxford University Press, OxfordGoogle Scholar
- Clarke, M. R., Croxall, J. P., Prince, P. A. (1981). Cephalopod remains in regurgitations of the wandering albatrossDiomedea exulans L. at South Georgia. Br. Antarct. Surv. Bull. 54: 9–21Google Scholar
- Clarke, M. R., MacLeod, N., Castello, H. P., Pinedo, M. C. (1980). Cephalopod remains from the stomach of a sperm whale stranded at Rio Grande do Sul in Brazil. Mar. Biol. 59: 235–239Google Scholar
- Clarke, M. R., MacLeod, N., Paliza, O. (1976). Cephalopod remains from the stomachs of sperm whales caught off Peru and Chile. J. Zool. 180: 477–493Google Scholar
- Rodhouse, P. G., Clarke, M. R., Murray, A. W. A. (1987). Cephalopod prey of the wandering albatrossDiomedea exulans. Mar. Biol. 96: 1–10Google Scholar
- Roper, C. F. E., Sweeney, M. J., Clarke, M. R. (1985). Cephalopods. In: Fischer, W., Hureau, J. C. (eds.) FAO species identification sheets for fishery purposes. Southern Ocean (Fishing areas 48, 58 and 88). Vol. 1. Food and Agriculture Organisation of the United Nations, Rome, p. 117–205Google Scholar
- Voss, N. A. (1980). A generic revision of the Cranchiidae (Cephalopoda: Oegopsida). Bull. mar. Sci. 30: 365–412Google Scholar