globalchange  > 气候变化与战略
DOI: 10.1007/s00227-019-3628-8
论文题名:
Geographic variation in life-history traits of the long-lived monacanthid Meuschenia scaber (Monacanthidae)
作者: Visconti V.; Trip E.D.L.; Griffiths M.H.; Clements K.D.
刊名: Marine Biology
ISSN: 253162
出版年: 2020
卷: 167, 期:2
语种: 英语
Scopus关键词: age structure ; age-related difference ; coral reef ; demography ; environmental factor ; exploitation ; fish ; geographical distribution ; geographical variation ; growth ; life history trait ; Canterbury [South Island] ; Hauraki Gulf ; New Zealand ; North Island ; Pegasus Bay ; South Island ; Tasman Bay ; Meuschenia ; Monacanthidae ; Pisces
英文摘要: Demography and life-history characteristics of reef fishes may vary as a consequence of ecological and environmental factors that lead to changes among populations. We evaluated variation in life-history traits in the leatherjacket Meuschenia scaber (Monacanthidae) through age-based analysis of 2112 fish collected from three locations in New Zealand distributed along an 8° latitudinal and 5 °C SST gradients. Meuschenia scaber showed distinct differences in age structure, growth patterns, maximum size and age, sex ratio and mortality across this latitudinal gradient. At warmer lower latitudes (Hauraki Gulf) the population displayed significantly greater mean adult body size (Lmax) and asymptotic length (L∞) in comparison with the other two locations. Fish from Tasman Bay (mid-range latitude) had a longer life span (Tmax) and a maximum age of 19 years, which represents the longest-lived monacanthid documented to date. Fish from Pegasus Bay (cooler higher latitude) showed a slower initial growth than lower latitude counterparts. The difference in maximum age between the sexes declined clinally from 7 years in the Hauraki Gulf to 3 years in Tasman Bay and 1 year in Pegasus Bay. Meuschenia scaber females tended to display heavier and larger body size than males at all three locations. Sex ratios varied among populations and with depth, suggesting females in the Hauraki Gulf and Tasman Bay may move into deeper water with age. Given the increasing global exploitation of monacanthids in multispecies fisheries and their long-living nature, our results provide valuable age-based demographic information essential for future conservation, monitoring and management programs. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159950
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作者单位: The Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft Laboratory, Pakefield Road, Lowestoft, Suffolk, NR33 0HT, United Kingdom; School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand; Nelson Marlborough Institute of Technology, 322 Hardy St, Private Bag 19, Nelson, 7042, New Zealand; Institute for Applied Ecology, Auckland University of Technology, 55 Wellesley Street East, Auckland, 1010, New Zealand; Ministry for Primary Industries, PO Box 2526, Wellington, New Zealand

Recommended Citation:
Visconti V.,Trip E.D.L.,Griffiths M.H.,et al. Geographic variation in life-history traits of the long-lived monacanthid Meuschenia scaber (Monacanthidae)[J]. Marine Biology,2020-01-01,167(2)
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