Abstract
Beak length analysis was undertaken for the arrov, squidNototodarus sloanii in the New Zealand sector of the Southern Ocean between Stewart Island and the Auckland Islands.N. sloanii has a restricted range and is endemic to the waters around New Zealand and its associated southern islands, where it supports a fishery and is preyed upon by a number of fishes, marine mammals and birds. Lower rostral length (LRL) and upper rostral length (URL) were analysed to see how these beak measurements related to both mantle length (ML) and wet weight (W). Both lower and upper rostral lengths could be used as useful predictors of ML and W inN. sloanii, as relationships had limited scatter and high correlation coefficients. The relationships between LRL and ML, and URL and ML were only linear after regressing log-transformed values of beak length against ML. However, the relationships between LRL and W, and URL and W were linear without transforming either thex ory values. These results are different from previously published beak length analyses ofNototodarus in New Zealand waters.
References
Carey PW (1992) Fish prey species of the New Zealand fur seal (Arctocephalus forsteri, Lesson). NZ J Ecol 16:41–46
Clarke MR (1983) Cephalopod biomass-estimation from predation. Mem Natl Mus Victoria Melbourne 44:95–107
Clark MR (1985) The food and feeding of seven fish species from the Campbell Plateau, New Zealand. NZ J Mar Freshwater Res 19:339–363
Clarke MR (1986) A handbook for the identification of cephalopod beaks. Clarendon Press, Oxford
Cooper J, Brown CR, Gales RP, Hindell MA, Klages NTW, Moors PJ, Pemberton D, Ridoux V, Thompson KR, Van Heezik YM (1990) Diets and dietary segregation of crested penguins (Eudyptes). In: Davis LS, Darby JT (eds) Penguin biology. Academic Press, San Diego, pp 131–156
Dunning MC, Clarke MR, Lu CC (1993) Cephalopods in the diet of oceanic sharks caught off eastern Australia. In: Okutani T, O'Dor RK, Kubodera T (eds), Recent advances in cephalopod fisheries biology. Tokai University Press, Tokyo, pp 119–131
Gales R, Pemberton D (1990) Seasonal and local variation in the diet of the little penguinEudyptula minor in Tasmania. Aust Wildl Res 17:231–259
Gales R, Pemberton D, Clarke MR, Lu CC (1992) Stomach contents of long-finned pilot whales (Globicephala melas) and bottlenose dolphins (Tursiops truncatus) in Tasmania. Mar Mamm Sci 8:405–413
Gales R, Pemberton D, Lu CC, Clarke MR (1993) Cephalopod diet of the Australian fur seal: variation due to location, season and sample type. Aust J Mar Freshwater Res 44:657–671
Gaskin DE, Cawthorn MW (1967) Squid mandibles from the stomachs of sperm whales (Physeter catodon L.) captured in the Cook Strait region of New Zealand. NZ J Mar Freshwater Res 1:59–70
Gibson DJM (1994) The New Zealand squid fishery—its development and current state. Seafood NZ February:52–56
Imber MJ (1991) Feeding ecology of antarctic and sub-antarctic procellariiformes. Acta XX Congr Int Ornithol 1402–1412
Imber MJ (1992) Cephalopods eaten by wandering albatrosses (Diomedea exulans L.) breeding at six circumpolar localities. J R Soc NZ 22:243–263
Jackson GD (1993) Growth zones within the statolith microstructure of the deepwater squidMoroteuthis ingens (Cephalopoda: Onychoteuthidae): evidence for a habitat shift? Can J Fish Aquat Sci 50:2366–2374
Jackson GD (1995) The use of beaks as tools for biomass estimation in the deepwater squidMoroteuthis ingens (Cephalopoda: Onychoteuthidae) in New Zealand waters. Polar Biol 15:9–14
Machida S (1983) A brief review of the squid survey by Hoyo Maru No 67 in southeast Australian waters in 1979/80. Mem Natl Mus Victoria Melbourne 44:291–295
Mattlin RH, Scheibling RE, Förch EC (1985) Distribution, abundance and size structure of arrow squid (Nototodarus sp.) of New Zealand. NAFO Sci Counc Stud 9:39–45
Montague TL, Cullen JM (1988) The diet of the little penguinEudyptula minor at Phillip Island, Victoria. Emu 88:138–149
Montague TL, Cullen JM, Fitzherebert K (1986) The diet of the short-tailed shearwaterPuffinus tenuirostris during its breeding season. Emu 86:207–213
Nemoto T, Okiyama M, Iwasaki N, Kikuchi T (1988) Squid as predators on krill (Euphausia superba) and prey for sperm whales in the Southern Ocean. In Sahrhage D (ed) Antarctic Ocean and resources variability. Springer, Berlin Heidelberg New York, pp 292–296
Piatkowski U, Rodhouse PG, Duhamel G (1991) Occurrence of the cephalopodMartialia hyadesi (Teuthoidea: Ommastrephidae) at the Kerguelen Islands in the Indian Ocean sector of the Southern Ocean. Polar Biol 11:273–275
Rodhouse PG (1990) Cephalopod fauna of the Scotia Sea at South Georgia: potential for commercial exploitation and possible consequences. In: Kerry KR, Hempel G (eds) Antarctic ecosystems. Ecological change and conservation. Springer, Berlin Heidelberg New York, pp 289–298
Skira IJ (1986) Food of the short-tailed shearwater,Puffinus tenuirostris, in Tasmania. Aust Wildl Res 13:481–488
Slooten E, Dawson SM (1994) Hector's dolphin. In: Ridgway SH, Harrison RH (eds) Handbook of marine mammals, vol 5. Academic Press, London, pp 311–333
Smith PJ, Mattlin RH, Roeleveld MA, Okutani T (1987) Arrow squids of the genusNototodarus in New Zealand waters: systematics, biology, and fisheries. NZ J Mar Freshwater Res 21: 315–326
Van Heezik YM (1990a) Diets of yellow-eyed, Fiordland crested, and little blue penguins breeding sympatrically on Codfish Island, New Zealand. NZ J Zool 17:543–548
Van Heezik YM (1990b) Seasonal, geographical, and age-related variations in the diet of the yellow-eyed penguin (Megadyptes antipodes). NZ J Zool 17:201–212
West JA, Imber MJ (1986) Some foods of Buller's mollymawkDiomedea bulleri. NZ J Zool 13:169–174
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Jackson, G.D., McKinnon, J.F. Beak length analysis of arrow squidNototodarus sloanii (Cephalopoda: Ommastrephidae) in southern New Zealand waters. Polar Biol 16, 227–230 (1996). https://doi.org/10.1007/BF02329211
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DOI: https://doi.org/10.1007/BF02329211