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Coincident recruitment patterns of Southern Hemisphere fishes

journal contribution
posted on 2023-05-18, 14:43 authored by Castillo-Jordan, C, Klaer, NL, Tuck, GN, Stewart FrusherStewart Frusher, Cubillos, LA, Sean TraceySean Tracey, Salinger, MJ
Three dominant recruitment patterns were identified across 30 stocks from Australia, New Zealand, Chile, South Africa, and the Falkland Islands using data from 1980 to 2010. Cluster and dynamic factor analysis provided similar groupings. Stocks exhibited a detectable degree of synchrony among species, in particular the hakes and lings from Australia, New Zealand, Chile, and South Africa. We tested three climate indices, the Interdecadal Pacific Oscillation (IPO), Southern Annular Mode (SAM), and Southern Oscillation Index (SOI), to explore their relationship with fish stock recruitment patterns. The time series of IPO and SOI showed the strongest correlation with New Zealand hoki (blue grenadier, Macruronus novaezelandiae) and Australian jackass morwong (Nemadactylus macropterus) (r = 0.50 and r = –0.50), and SAM was positively related to Australian Macquarie Island Patagonian toothfish (Dissostichus eleginoides) (r = 0.49). Potential linkages in recruitment patterns at sub-basin, basin, and multibasin scales and regional and global climate indices do account for some of the variation, playing an important role for several key Southern Hemisphere species.

History

Publication title

Canadian Journal of Fisheries and Aquatic Sciences

Volume

73

Pagination

270-278

ISSN

0706-652X

Department/School

Institute for Marine and Antarctic Studies

Publisher

Natl Research Council Canada

Place of publication

Research Journals, Montreal Rd, Ottawa, Canada, Ontario, K1A 0R6

Rights statement

Copyright 2015 the Author

Repository Status

  • Restricted

Socio-economic Objectives

Fisheries - wild caught not elsewhere classified

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