Effects of a marine reserve on recruitment of grunts (Pisces: Haemulidae) at Barbados, West Indies.
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| Title: | Effects of a marine reserve on recruitment of grunts (Pisces: Haemulidae) at Barbados, West Indies. |
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| Authors: | Tupper, Mark1,2, Juanes, Francis3,4 |
| Source: | Environmental Biology of Fishes. Jun1999, Vol. 55 Issue 1/2, p53-63. 11p. |
| Subject Terms: | *Grunts (Fishes), *Perciformes, *Predators of fishes, *Piscivores, *Fish populations |
| Geographic Terms: | Barbados |
| Abstract: | The effects of a non-extractive marine reserve on the recruitment dynamics of haemulid fishes and their predators on Barbados coral reefs were studied using visual census and mark-recapture methods. Size and abundance of piscivores (including large adult grunts) known to prey on grunts were greater within the reserve than on adjacent reefs, whereas size and abundance of older juvenile grunts did not differ between protected and exploited reefs. Recruitment and early juvenile abundance were lower within the reserve and were inversely related to predator density (including adult conspecifies). Patterns in density of new recruits may also have been influenced by oceanographic patterns of supply of larvae. Thus, although protection has a significant positive effect on the size and abundance of large carnivorous fishes, higher predation pressure within a reserve may serve to reduce juvenile recruitment within the reserve. At some size/age, cumulative recruitment due to lower size-specific predation mortality results in higher density within the reserve. This increased density is maintained by the absence of fishing mortality within the reserve. Despite maintaining high spawning biomass of several large, commercially exploited species that may export larvae to downstream areas, the Barbados Marine Reserve appears to be a local sink for juvenile grunts. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 18907444 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effects of a marine reserve on recruitment of grunts (Pisces: Haemulidae) at Barbados, West Indies. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Tupper%2C+Mark%22">Tupper, Mark</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Juanes%2C+Francis%22">Juanes, Francis</searchLink><relatesTo>3,4</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Environmental+Biology+of+Fishes%22">Environmental Biology of Fishes</searchLink>. Jun1999, Vol. 55 Issue 1/2, p53-63. 11p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Grunts+%28Fishes%29%22">Grunts (Fishes)</searchLink><br />*<searchLink fieldCode="DE" term="%22Perciformes%22">Perciformes</searchLink><br />*<searchLink fieldCode="DE" term="%22Predators+of+fishes%22">Predators of fishes</searchLink><br />*<searchLink fieldCode="DE" term="%22Piscivores%22">Piscivores</searchLink><br />*<searchLink fieldCode="DE" term="%22Fish+populations%22">Fish populations</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Barbados%22">Barbados</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The effects of a non-extractive marine reserve on the recruitment dynamics of haemulid fishes and their predators on Barbados coral reefs were studied using visual census and mark-recapture methods. Size and abundance of piscivores (including large adult grunts) known to prey on grunts were greater within the reserve than on adjacent reefs, whereas size and abundance of older juvenile grunts did not differ between protected and exploited reefs. Recruitment and early juvenile abundance were lower within the reserve and were inversely related to predator density (including adult conspecifies). Patterns in density of new recruits may also have been influenced by oceanographic patterns of supply of larvae. Thus, although protection has a significant positive effect on the size and abundance of large carnivorous fishes, higher predation pressure within a reserve may serve to reduce juvenile recruitment within the reserve. At some size/age, cumulative recruitment due to lower size-specific predation mortality results in higher density within the reserve. This increased density is maintained by the absence of fishing mortality within the reserve. Despite maintaining high spawning biomass of several large, commercially exploited species that may export larvae to downstream areas, the Barbados Marine Reserve appears to be a local sink for juvenile grunts. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=18907444 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1023/A:1007516831826 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 53 Subjects: – SubjectFull: Grunts (Fishes) Type: general – SubjectFull: Perciformes Type: general – SubjectFull: Predators of fishes Type: general – SubjectFull: Piscivores Type: general – SubjectFull: Fish populations Type: general – SubjectFull: Barbados Type: general Titles: – TitleFull: Effects of a marine reserve on recruitment of grunts (Pisces: Haemulidae) at Barbados, West Indies. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Tupper, Mark – PersonEntity: Name: NameFull: Juanes, Francis IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun1999 Type: published Y: 1999 Identifiers: – Type: issn-print Value: 03781909 Numbering: – Type: volume Value: 55 – Type: issue Value: 1/2 Titles: – TitleFull: Environmental Biology of Fishes Type: main |
| ResultId | 1 |
