How large is the world's largest fish? Measuring whale sharks Rhincodon typus with laser photogrammetry

被引:71
作者
Rohner, C. A. [1 ,2 ,3 ]
Richardson, A. J. [3 ,4 ]
Marshall, A. D. [1 ]
Weeks, S. J. [2 ]
Pierce, S. J. [5 ,6 ]
机构
[1] Marine Megafauna Fdn, Praia Do Tofo, Mozambique
[2] Univ Queensland, Ctr Spatial Environm Res, St Lucia, Qld 4072, Australia
[3] CSIRO Marine & Atmospher Res, Cleveland, Qld 4163, Australia
[4] Univ Queensland, Ctr Applicat Nat Resource Math CARM, St Lucia, Qld 4072, Australia
[5] All Out Africa Res Unit, Lobamba, Swaziland
[6] Eyes Horizon, Praia Do Tofo, Mozambique
关键词
demography; growth; size; visual estimate; NINGALOO REEF; SOUTH-AFRICA; WESTERN-AUSTRALIA; POPULATION-SIZE; PARALLEL LASERS; INDIAN-OCEAN; IDENTIFICATION; AGGREGATIONS; ABUNDANCE; SURVIVAL;
D O I
10.1111/j.1095-8649.2010.02861.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Laser photogrammetry was found to be a promising new cost-effective technique for measuring free-swimming whale sharks Rhincodon typus. Photogrammetric measurements were more precise than visual size estimates by experienced researchers, with results from the two methods differing by 9.8 +/- 1.1% (mean +/- s.e.). A new metric of total length and the length between the fifth gill and first dorsal fin (r(2) = 0.93) is proposed to facilitate easy, accurate length measurements of whale sharks in the field. (C) 2010 The Authors
引用
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页码:378 / 385
页数:8
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