Abstract:
:Fishing activity in two artificial reefs (ARs) was monitored between August 2001 and August 2002 in the gulf of Morrosquillo, to investigate their possible impact on the fishery dynamics. We determined catch per unit effort (CPUE) and catch composition, and found 19 species in Punta de Piedra and 36 in Tolú (16 species common to both). In Punta de Piedra, CPUE was 0.40 kg/hour/fisherman and estimated annual catch was 1 830 kg (Tolú values: 0.42 kg/hour/fisherman and 4 820 kg). No significant differences in CPUE were found between ARs and no seasonal pattern was evident. The differences in total composition and extracted biomass between ARs were mainly a consequence of greater effort exerted in Tolú, whereas the absence of trends and correlation with environmental factors of CPUE and species caught suggests that the ARs are near their carrying capacity. As expected, the ARs supported and improved CPUE and fishing success in comparison with reported values of natural habitats, traditional fishing grounds and some artificial habitats in the zone, owing to their greater volume, structural complexity and vertical profile. However, this increase could also be the result of biomass aggregation, not production. The potential negative impacts of ARs on the environment require experimental research. The deployment of non-extractive ARs and the controlled usage for fishery purposes could be a useful tool for resource enhancement and management in the area.
journal_name
Rev Biol Tropjournal_title
Revista de biologia tropicalauthors
Delgadillo-Garzón O,García CBsubject
Has Abstractpub_date
2009-12-01 00:00:00pages
993-1007issue
4eissn
0034-7744issn
2215-2075journal_volume
57pub_type
杂志文章abstract::A total of 260 Costa Rican patients (106 males) with clinical diagnosis of Bronchial Asthma and 100 non atopic subjects were studied with skin prick tests for all Poaceae tribes. Allergic Type I Hypersensitivity to these pollens among the Bronchial Asthma patients reached 51.2% positivity to at least one tribe (2% in ...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:1994-04-01 00:00:00
abstract::Some dinoflagellates with benthic habits are related to ciguatera intoxication by fish consumption, especially in tropical areas. In the Mexican Caribbean, ciguatera is relatively common, but only one paper seems to have been published on the subject, and there are very few publicactions on phytoplankton and benthic m...
journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2004-09-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v1i2.15354
更新日期:2004-09-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2001-09-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2008-03-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2014-06-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章,评审
doi:
更新日期:1996-08-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2008-12-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:1993-12-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2000-12-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2011-06-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2005-05-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v55i2.6025
更新日期:2007-06-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v60i3.1771
更新日期:2012-09-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2001-06-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2012-03-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2013-09-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2010-09-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:1994-04-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2010-06-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2011-03-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2013-06-01 00:00:00
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journal_title:Revista de biologia tropical
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更新日期:2008-12-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v64i3.20110
更新日期:2017-03-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2013-03-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2010-09-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
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更新日期:2001-06-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2008-03-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:10.15517/rbt.v60i3.1758
更新日期:2012-09-01 00:00:00
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journal_title:Revista de biologia tropical
pub_type: 杂志文章
doi:
更新日期:2013-06-01 00:00:00