Spawning aggregation behavior and reproductive ecology of the giant bumphead parrotfish, Bolbometopon muricatum, in a remote marine reserve
Southeast Fisheries Science Center
Document
(DOC)
| ID: 67228
| Published / External
Created: 2022-05-09
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Last Modified: 2023-10-17
Data Set (DS) | ID: 26459
ID: 67228
Document (DOC)
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* » Title | Spawning aggregation behavior and reproductive ecology of the giant bumphead parrotfish, Bolbometopon muricatum, in a remote marine reserve |
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* Status | Completed |
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The giant bumphead parrotfish (Bolbometopon muricatum) has experienced precipitous population declines throughout its range due to its importance as a highly-prized fishery target and cultural resource. Because of its diet, Bolbometopon may serve as a keystone species on Indo-Pacific coral reefs, yet comprehensive descriptions of its reproductive ecology do not exist. We used a variety of underwater visual census (UVC) methods to study an intact population of Bolbometopon at Wake Atoll, a remote and protected coral atoll in the west Pacific. Key observations include spawning activities in the morning around the full and last quarter moon, with possible spawning extending to the new moon. We observed peaks in aggregation size just prior to and following the full and last quarter moon, respectively, and observed a distinct break in spawning at the site that persisted for four days; individuals returned to the aggregation site one day prior to the last quarter moon and resumed spawning the following day. The mating system was lek-based, characterized by early male arrival at the spawning site followed by vigorous defense (including head-butting between large males) of small territories. These territories were apparently used to attract females that arrived later in large schools, causing substantial changes in the sex ratio on the aggregation site at any given time during the morning spawning period. Aggression between males and courtship of females led to pair spawning within the upper water column. Mating interference was not witnessed but we noted instances suggesting that sperm competition might occur. Densities of Bolbometopon on the aggregation site averaged 10.07 (ñ3.24 SE) fish per hectare (ha) with maximum densities of 51.5 fish per ha. By comparing our observations to the results of biennial surveys conducted by the National Oceanic and Atmospheric Administration (NOAA) Coral Reef Ecosystem Division (CRED), we confirmed spatial consistency of the aggregation across years as well as a temporal break in spawning activity and aggregation that occurred during the lunar phase. We estimated the area encompassed by the spawning aggregation to be 0.72 ha, suggesting that spawning site closures and temporal closures centered around the full to the new moon might form one component of a management and conservation plan for this species. Our study of the mating system and spawning aggregation behavior of Bolbometopon from the protected, relatively pristine population at Wake Atoll provides crucial baselines of population density, sex ratio composition, and productivity of a spawning aggregation site from an oceanic atoll. Such information is key for conservation efforts and provides a basic platform for the design of marine protected areas for this threatened iconic coral reef fish, as well as for species with similar ecological and life history characteristics |
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Munoz RC, Zgliczynski BJ, Teer BZ, Laughlin JL. Spawning aggregation behavior and reproductive ecology of the giant bumphead parrotfish, Bolbometopon muricatum, in a remote marine reserve. PeerJ. 2014 Nov 25;2:e681. doi: 10.7717/peerj.681. PMID: 25469322; PMCID: PMC4250069. |
• Supplemental Information |
Support was provided by the NOAA Proactive Species Conservation Program to RCM and BJZ. Support for preparation of the manuscript was provided by the National Marine Fisheries Service Southeast Fisheries Science Center to RCM. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript |
DOI (Digital Object Identifier) | 10.7717/peerj.681 |
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* » Date Effective From | 2014 |
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Person | Munoz, Roldan |
Address |
101 Pivers Island Rd Beaufort, NC 28516 |
Email Address | roldan.munoz@noaa.gov |
Phone | 252-728-8613 |
Fax | 252-728-8784 |
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* » Support Role | Co-Author |
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* » Date Effective From | 2014 |
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Person | Teer, Brad Z |
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101 Pivers Island Road Beaufort, NC 28516-9722 |
Email Address | brad.teer@noaa.gov |
Phone | (252) 728-8612 |
Fax | (252) 728-8784 |
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* » Support Role | Co-Author |
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* » Date Effective From | 2014 |
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Person | Zgliczynski, Brian |
Email Address | bzgliczy@ucsd.edu |
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» Download URL | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4250069/pdf/peerj-02-681.pdf |
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Catalog Details
Catalog Item ID | 67228 |
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Metadata Record Created By | Lee M Weinberger |
Metadata Record Created | 2022-05-09 17:47+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2023-10-17 16:12+0000 |
Metadata Record Published | 2022-05-09 |
Owner Org | SEFSC |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2022-05-09 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2023-05-09 |
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