Advection, dispersion and mortality of a patch of southern bluefin tuna larvae Thunnus maccoyii in the East Indian Ocean
Open accessAbstract
h4ortality rate of southern bluefin tuna larvae Thunnus rnaccoyii was determined from measurements of a large, high density patch of larvae in the East Indian Ocean made In January-February 1987.An advection-diffusion-mortality model that improves on elliptical spread models was used to model changes in the patch over a period of 6 d.The patch at the start of sampling consisted of a distinct cohort of larvae 7 to 8 d old.Diffusion in subsequent 2 d intervals was slow (1.02 to 1.5 m2 S-') but within the bounds observed for patch scales in the order of a few kilometres widr.Intensifying southwesterly winds were opposed by advect~on with a southwestward drift of about 6 cm S l .The origlnal intent~on of using a free-dnftmg drogue to track the centre of the patch, and thereby account for the advective process, was not successful because of the relative drift of buoy and larval patch.Instantaneous mortality (Z) was estimated to b e 0.66 d-' (a daily survival rate of 52 '::,).This is the first time the mortality of tuna larvae has been directly estimated in the open ocean.
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Survival (egg fitness) ultimately depends on predation mortality, which may be in the order of 0.6/day in early life stages of tuna.
“survival (egg fitness) ultimately depends on predation mortality, which may be in the order of 0.6/day in early life stages of tuna (Davis and Lyne 1991)”
From Atlantic bluefin tuna spawn early to avoid metabolic meltdown in larvae (2022) · cites this paper as Davis and Lyne 1991
The Advection-diffusion-mortality modelling section estimates instantaneous mortality of 7–8-day-old southern bluefin tuna larvae at 0.66 per day, close to the claimed order of magnitude. It does not establish that this mortality was due to predation; it says starvation may also have contributed. The estimate concerns larvae, not egg survival or egg fitness. Page numbers are unavailable in our copy. (LLM, conf=0.88)
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- Bitterman, D S., Hansen, D V. (1989). Direct measurements of current shear In the trop~cal Pacific Ocean and its effect on drift buoy performance. J. Atmos. Oceanic Technol. 6 (2): 274-279
- Chereskin, T K.. Niiler, P. P., Poulain, P. M. (1989). A numeri- cal study of the effects of upper-ocean shear on flexible drogued drifters. J . Atmos. Oceanic Technol. 6 (2): 243-253
- Cushing, D. H (1975). Manne ecology and fisheries. Cam- bridge University Press, Cambridge
- Jenkins, G. P,, Young, J. ,W.. Davis, T L. 0. (in press). Density- dependence of larval growth of a marine fish, the southern bluefin tuna, Thunnus maccoyii. Can. J. Fish. Aquat. Sci.
- Koslow, J. A., Brault, S., Dugas, J., Page, F. (1985). Anatomy of an apparent year-class failure: the early life history of the 1983 Browns Bank haddock Melanogramrnus aeglefinus. Trans. Am. F ~s h . Soc. 114. 478-489
- R C. (1974) Larval mortality in marine fishes and the critical period concept. In: Blaxter, J. H. S. (ed.) The early life history of fish. Springer-Verlag, Berlin, p. 3-19
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Life History and Stock Structure of Atlantic Bluefin Tuna (<i>Thunnus thynnus</i>)
Rooker, J. R., Alvarado Bremer, J. R., Block, B. A., Dewar, H., de Metrio, G., Corriero, A., Kraus, R. T., Prince, E. D., Rodríguez-Marín, E., & Secor, D. H. (2007) · Reviews in Fisheries Science · doi:10.1080/10641260701484135 · Cited by 239 · see citing works
Reglero, P., Tittensor, D., Álvarez-Berastegui, D., Aparicio-González, A., & Worm, B. (2014) · Marine Ecology Progress Series · doi:10.3354/meps10666 · Cited by 106 · see citing works
Atlantic bluefin tuna spawn early to avoid metabolic meltdown in larvae
Fiksen, Ø., & Reglero, P. (2022) · Ecology · doi:10.1002/ecy.3568 · Cited by 22 · see citing works
- Authors
- Davis, T., Lyne, V, & Jenkins, G.
- ORCID
- Lyne, V
- Venue
- Marine Ecology Progress Series
- Publisher
- Inter-Research Science Center
- Published
- 1991
- Volume
- 73
- Pages
- 33-45
- ISSN
- 0171-8630 (ISSN-L)
- 1616-1599
- OpenAlex
- W2058220767
- Cited by
- 38
- References
- 0
- Citations by year
- 2025: 1 · 2023: 1 · 2022: 1 · 2021: 3 · 2019: 1 · 2017: 2 · 2015: 1 · 2013: 2 · 2012: 3
- FWCI
- 1.99
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Marine Ecology Progress Series (publishedVersion)
- Funders
- Commonwealth Scientific and Industrial Research Organisation
- Topics
- Physical Sciences › Environmental Science › Global and Planetary Change › Marine and fisheries research
- Physical Sciences › Environmental Science › Nature and Landscape Conservation › Ichthyology and Marine Biology
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Oceanographic and Atmospheric Processes
- Keywords
- southern bluefin tuna, Thunnus maccoyii, larval mortality, advection, larval dispersal, East Indian Ocean, daily survival rate
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