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| 11. |
A multispecies stock assessment of a pelagic coastal fishery of the south‐west Gulf of Mexico |
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Aquaculture Research,
Volume 23,
Issue 1,
1992,
Page 103-112
F. ARREGUIN‐SANCHEZ,
E. A. CHAVEZ,
J. A. MENCHACA,
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摘要:
Abstract.Multispecies stock assessment based upon Schaefer's theory was applied to a coastal pelagic fishery (Spanish mackerel,Scomberomorus maculatus(Mitchill); king mackerel,S. cavalla(Cuvier) and the blue runner,Caranx fusus(Geoffroy‐St Hilaire)), from the west central Gulf of Mexico. Linear and non‐linear systems of equations were estimated by using a multiple stepwise regression technique. The values of interaction parameters show a clear competition between mackerels, and technological interdependences between the blue runner and mackerels, The maximum yield estimation was from 4000 to 5000 tonnes, obtained with 23 and 34 beach seines respectively, depending on the applied model. Two stages were observed from the statistical records; in the first the Spanish mackerel is the most important species while in the second the abundance of this species declines and the others remain at the same level. Significant interactions were found from the first data gr
ISSN:1355-557X
DOI:10.1111/j.1365-2109.1992.tb00600.x
出版商:Blackwell Publishing Ltd
年代:1992
数据来源: WILEY
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| 12. |
Assessment of an automated fish counter in a Canadian river |
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Aquaculture Research,
Volume 23,
Issue 1,
1992,
Page 113-121
D. G. REDDIN,
M. F. O'CONNELL,
D. A. DUNKLEY,
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摘要:
Abstract.In order to assess the accuracy and reliability of automated fish counters for counting adult Atlantic salmon, Salmo salar L., a ‘Logie’ resistivity counter was installed in late June 1989 in the control dam above the fishway in Northeast River, Placentia, Newfoundland, Canada. The counter was in operation for 26 days (1–26 July). The accuracy of daily counts recorded by the counter was verified by visual counts of Atlantic salmon released from a trap located downstream of the counter and immediately above the fishway. All the fish released from the trap had to pass over the counter. A total of 517 salmon (mainly grilse) was released from the trap and the net number of upstream migrants recorded by the counter was also 517. This is the first test and use of an open‐channel counter in eastern Canada. The results suggest that some counting fences and fishways may be easily adapted for installation of automated counters and that counters offer a cost‐effective means of counting adult Atlant
ISSN:1355-557X
DOI:10.1111/j.1365-2109.1992.tb00601.x
出版商:Blackwell Publishing Ltd
年代:1992
数据来源: WILEY
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| 13. |
The effect of orally administered 17α ‐methyltestosterone and 3,3′‐triiodo‐L‐thyronine on growth of seawater‐adapted tilapia,Oreochromis mossambicus(Peters) |
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Aquaculture Research,
Volume 23,
Issue 1,
1992,
Page 123-128
R.D. HOWERTON,
D. K. OKIMOTO,
E. G. GRAU,
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ISSN:1355-557X
DOI:10.1111/j.1365-2109.1992.tb00602.x
出版商:Blackwell Publishing Ltd
年代:1992
数据来源: WILEY
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| 14. |
Book reviews |
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Aquaculture Research,
Volume 23,
Issue 1,
1992,
Page 129-131
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摘要:
Book reviewed in this articleScallop Fanning. By DavidHardy.The Biology of the Penaeidae. By W. Dall, B. J. Hill, P. C. Rothlisberg&D. J. Sharples.Coastal Aquaculture Engineering. By A. N. Bose, S. N. GhoshC.T Yang&A. Mitra.
ISSN:1355-557X
DOI:10.1111/j.1365-2109.1992.tb00603.x
出版商:Blackwell Publishing Ltd
年代:1992
数据来源: WILEY
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