Fertilization limitation of Diadema antillarum on coral reefs in the Florida Keys

Colette Feehan, Michael S. Brown, William C. Sharp, Jean Sébastien Lauzon-Guay, Diane K. Adams

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Mass mortality of the sea urchin Diadema antillarum due to disease outbreaks in 1983 and 1991 decimated populations in the Florida Keys, and they have yet to recover. Here, we use a coupled advection-diffusion and fertilization-kinetics model to test the hypothesis that these populations are fertilization limited. We found that fertilization success was ≥ 96% prior to the first disease outbreak, decreased substantially following recurrent disease to 3%, and has since remained low. By investigating the combined effects of physical factors (population spatial extent and current velocity) and sea urchin behavior (aggregation) on density-dependent fertilization success, we show that fertilization success at a given density increases with increasing population spatial extent and decreasing current velocity, and is greater under simulated aggregation behavior of D. antillarum. However, at present population densities, the increase in fertilization success due to aggregation is < 1%, even under the most favorable physical conditions. These results indicate that populations are severely fertilization limited, and that Allee effects at low population density will continue to limit recovery. Our results can serve as a practical guide to managers in the development of coral reef restoration strategies, including the design of a D. antillarum restocking program to obtain reproductively viable populations.

Original languageEnglish
Pages (from-to)1897-1904
Number of pages8
JournalEcology
Volume97
Issue number8
DOIs
StatePublished - 1 Aug 2016

Fingerprint

aggregation behavior
coral reefs
coral reef
population density
Allee effect
mass mortality
current velocity
Echinoidea
advection
kinetics
managers
sea
testing
effect
programme
restoration
test
physical conditions

Keywords

  • Aggregation
  • Allee effects
  • Disease
  • Fertilization
  • Mass mortality
  • Sea urchin
  • Spawning

Cite this

Feehan, C., Brown, M. S., Sharp, W. C., Lauzon-Guay, J. S., & Adams, D. K. (2016). Fertilization limitation of Diadema antillarum on coral reefs in the Florida Keys. Ecology, 97(8), 1897-1904. https://doi.org/10.1002/ecy.1461
Feehan, Colette ; Brown, Michael S. ; Sharp, William C. ; Lauzon-Guay, Jean Sébastien ; Adams, Diane K. / Fertilization limitation of Diadema antillarum on coral reefs in the Florida Keys. In: Ecology. 2016 ; Vol. 97, No. 8. pp. 1897-1904.
@article{e508145367b34f51b95dd5e47e7e220d,
title = "Fertilization limitation of Diadema antillarum on coral reefs in the Florida Keys",
abstract = "Mass mortality of the sea urchin Diadema antillarum due to disease outbreaks in 1983 and 1991 decimated populations in the Florida Keys, and they have yet to recover. Here, we use a coupled advection-diffusion and fertilization-kinetics model to test the hypothesis that these populations are fertilization limited. We found that fertilization success was ≥ 96{\%} prior to the first disease outbreak, decreased substantially following recurrent disease to 3{\%}, and has since remained low. By investigating the combined effects of physical factors (population spatial extent and current velocity) and sea urchin behavior (aggregation) on density-dependent fertilization success, we show that fertilization success at a given density increases with increasing population spatial extent and decreasing current velocity, and is greater under simulated aggregation behavior of D. antillarum. However, at present population densities, the increase in fertilization success due to aggregation is < 1{\%}, even under the most favorable physical conditions. These results indicate that populations are severely fertilization limited, and that Allee effects at low population density will continue to limit recovery. Our results can serve as a practical guide to managers in the development of coral reef restoration strategies, including the design of a D. antillarum restocking program to obtain reproductively viable populations.",
keywords = "Aggregation, Allee effects, Disease, Fertilization, Mass mortality, Sea urchin, Spawning",
author = "Colette Feehan and Brown, {Michael S.} and Sharp, {William C.} and Lauzon-Guay, {Jean S{\'e}bastien} and Adams, {Diane K.}",
year = "2016",
month = "8",
day = "1",
doi = "10.1002/ecy.1461",
language = "English",
volume = "97",
pages = "1897--1904",
journal = "Ecology",
issn = "0012-9658",
publisher = "Wiley-Blackwell",
number = "8",

}

Feehan, C, Brown, MS, Sharp, WC, Lauzon-Guay, JS & Adams, DK 2016, 'Fertilization limitation of Diadema antillarum on coral reefs in the Florida Keys', Ecology, vol. 97, no. 8, pp. 1897-1904. https://doi.org/10.1002/ecy.1461

Fertilization limitation of Diadema antillarum on coral reefs in the Florida Keys. / Feehan, Colette; Brown, Michael S.; Sharp, William C.; Lauzon-Guay, Jean Sébastien; Adams, Diane K.

In: Ecology, Vol. 97, No. 8, 01.08.2016, p. 1897-1904.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Fertilization limitation of Diadema antillarum on coral reefs in the Florida Keys

AU - Feehan, Colette

AU - Brown, Michael S.

AU - Sharp, William C.

AU - Lauzon-Guay, Jean Sébastien

AU - Adams, Diane K.

PY - 2016/8/1

Y1 - 2016/8/1

N2 - Mass mortality of the sea urchin Diadema antillarum due to disease outbreaks in 1983 and 1991 decimated populations in the Florida Keys, and they have yet to recover. Here, we use a coupled advection-diffusion and fertilization-kinetics model to test the hypothesis that these populations are fertilization limited. We found that fertilization success was ≥ 96% prior to the first disease outbreak, decreased substantially following recurrent disease to 3%, and has since remained low. By investigating the combined effects of physical factors (population spatial extent and current velocity) and sea urchin behavior (aggregation) on density-dependent fertilization success, we show that fertilization success at a given density increases with increasing population spatial extent and decreasing current velocity, and is greater under simulated aggregation behavior of D. antillarum. However, at present population densities, the increase in fertilization success due to aggregation is < 1%, even under the most favorable physical conditions. These results indicate that populations are severely fertilization limited, and that Allee effects at low population density will continue to limit recovery. Our results can serve as a practical guide to managers in the development of coral reef restoration strategies, including the design of a D. antillarum restocking program to obtain reproductively viable populations.

AB - Mass mortality of the sea urchin Diadema antillarum due to disease outbreaks in 1983 and 1991 decimated populations in the Florida Keys, and they have yet to recover. Here, we use a coupled advection-diffusion and fertilization-kinetics model to test the hypothesis that these populations are fertilization limited. We found that fertilization success was ≥ 96% prior to the first disease outbreak, decreased substantially following recurrent disease to 3%, and has since remained low. By investigating the combined effects of physical factors (population spatial extent and current velocity) and sea urchin behavior (aggregation) on density-dependent fertilization success, we show that fertilization success at a given density increases with increasing population spatial extent and decreasing current velocity, and is greater under simulated aggregation behavior of D. antillarum. However, at present population densities, the increase in fertilization success due to aggregation is < 1%, even under the most favorable physical conditions. These results indicate that populations are severely fertilization limited, and that Allee effects at low population density will continue to limit recovery. Our results can serve as a practical guide to managers in the development of coral reef restoration strategies, including the design of a D. antillarum restocking program to obtain reproductively viable populations.

KW - Aggregation

KW - Allee effects

KW - Disease

KW - Fertilization

KW - Mass mortality

KW - Sea urchin

KW - Spawning

UR - http://www.scopus.com/inward/record.url?scp=84980491565&partnerID=8YFLogxK

U2 - 10.1002/ecy.1461

DO - 10.1002/ecy.1461

M3 - Article

C2 - 27859199

AN - SCOPUS:84980491565

VL - 97

SP - 1897

EP - 1904

JO - Ecology

JF - Ecology

SN - 0012-9658

IS - 8

ER -