scholarly journals Sound production associated with reproductive behavior of Nassau grouper Epinephelus striatus at spawning aggregations

2012 ◽  
Vol 19 (1) ◽  
pp. 29-38 ◽  
Author(s):  
MT Schärer ◽  
TJ Rowell ◽  
MI Nemeth ◽  
RS Appeldoorn
Keyword(s):  
Reproductive Behavior ◽  
Sound Production ◽  
Spawning Aggregations ◽  
Nassau Grouper ◽  
Epinephelus Striatus

scholarly journals Hydroacoustics for the discovery and quantification of Nassau grouper (Epinephelus striatus) spawning aggregations

Coral Reefs ◽  
2017 ◽  
Vol 36 (2) ◽  
pp. 589-600 ◽  
Author(s):  
J. P. Egerton ◽  
A. F. Johnson ◽  
L. Le Vay ◽  
C. M. McCoy ◽  
B. X. Semmens ◽  
...  
Keyword(s):  
Spawning Aggregations ◽  
Nassau Grouper ◽  
Epinephelus Striatus

scholarly journals Spatial ecology of Nassau Grouper at home reef sites: using acoustic telemetry to track a large, long-lived epinephelid across multiple years (2005-2008)

2020 ◽  
Vol 655 ◽  
pp. 199-214
Author(s):  
KM Blincow ◽  
PG Bush ◽  
SA Heppell ◽  
CM McCoy ◽  
BC Johnson ◽  
...  
Keyword(s):  
Spatial Ecology ◽  
Management Strategies ◽  
Reef Fishes ◽  
Vertical Movement ◽  
Cayman Islands ◽  
Critically Endangered Species ◽  
Spawning Aggregations ◽  
Nassau Grouper ◽  
Epinephelus Striatus ◽  
At Home

Characterizing the behavior of coral reef fishes at home reef sites can provide insight into the mechanisms of spatial ecology and provide a framework for spatial resource management. In the Caribbean, populations of Nassau grouper Epinephelus striatus have declined due to fishing impacts on spawning aggregations. Despite local and regional efforts by fisheries managers to implement regulations protecting spawning aggregations, few Nassau grouper populations appear to be recovering. In order to improve management strategies for this critically endangered species, it is necessary to understand the spatial ecology of the species across seasons and years. In the Cayman Islands, we used a multi-year, presence/absence, depth-coded acoustic tagging dataset of Nassau grouper to characterize patterns in the species’ behavior and vertical habitat use at home reef sites. Twenty acoustically tagged individuals (56-84 cm, 70.01 ± 7.40 cm; total length, mean ± SD) maintained consistent home reef sites, although some fish regularly shifted activity centers within the home site, often following a seasonal spawning migration. Seven fish with depth-coded tags showed a higher probability of vertical movement in the hours immediately following dawn and preceding dusk. We found evidence of a positive relationship between the fish condition factor and depth of home reef site. The finding of persistent home reef sites across years suggests that properly sized spatial reserves at home reef sites can be a useful complement to spawning aggregation protection when considering management strategies for Nassau grouper.

scholarly journals Patterns of color phase indicate spawn timing at a Nassau grouper Epinephelus striatus spawning aggregation

2012 ◽  
Vol 58 (1) ◽  
pp. 73-83 ◽  
Author(s):  
Stephanie K Archer ◽  
Scott A Heppell ◽  
Brice X Semmens ◽  
Christy V Pattengill-Semmens ◽  
Phillippe G Bush ◽  
...  
Keyword(s):  
Relative Proportion ◽  
Video Camera ◽  
Marine Conservation ◽  
Spawning Aggregation ◽  
Cayman Islands ◽  
Spawning Aggregations ◽  
Nassau Grouper ◽  
Epinephelus Striatus ◽  
Spawning Periods ◽  
White Belly

Abstract Nassau grouper Epinephelus striatus are a large bodied, top level predator that is ecologically important throughout the Caribbean. Although typically solitary, Nassau grouper form large annual spawning aggregations at predictable times in specific locations. In 2003, The Cayman Islands Marine Conservation Board established protection for a newly rediscovered Nassau grouper spawning aggregation on Little Cayman, British West Indies. The large size of this aggregation provides a unique opportunity to study the behavior of Nassau grouper on a relatively intact spawning aggregation. During non-spawning periods Nassau grouper display a reddish-brown-and-white barred coloration. However, while aggregating they exhibit three additional color phases: “bicolor”, “dark”, and “white belly”. We video sampled the population on multiple days leading up to spawning across five spawning years. Divers focused a laser caliper equipped video camera on individual fish at the aggregation. We later analyzed the video to determine the length of the fish and record the color phase. Our observations show that the relative proportion of fish in the bicolor color phase increases significantly on the day leading up to the primary night of spawning. The increase in the proportion of the bicolor color phase from 0.05 early in the aggregation to 0.40 on the day of spawning suggests that this color phase conveys that a fish is behaviorally and physiologically prepared to spawn. Additionally, 82.7% of fish exhibiting dark or white belly coloration early in the aggregation period suggests that these color phases are not only shown by female fish as was previously posited.

Progress in controlled breeding of Nassau grouper (Epinephelus striatus) broodstock by hormone induction

Aquaculture ◽  
1995 ◽  
Vol 138 (1-4) ◽  
pp. 205-219 ◽  
Author(s):  
Wade O. Watanabe ◽  
Simon C. Ellis ◽  
Eileen P. Ellis ◽  
William D. Head ◽  
Christopher D. Kelley ◽  
...  
Keyword(s):  
Nassau Grouper ◽  
Epinephelus Striatus

scholarly journals Spatial dynamics of the Nassau grouper Epinephelus striatus in a Caribbean atoll

2007 ◽  
Vol 343 ◽  
pp. 239-249 ◽  
Author(s):  
RM Starr ◽  
E Sala ◽  
E Ballesteros ◽  
M Zabala
Keyword(s):  
Spatial Dynamics ◽  
Nassau Grouper ◽  
Epinephelus Striatus

Observations of a Nassau grouper, Epinephelus striatus, Spawning Aggregation Site in Little Cayman, Cayman Islands, Including Multi-Species Spawning Information

2004 ◽  
Vol 70 (3) ◽  
pp. 305-313 ◽  
Author(s):  
Leslie Whaylen ◽  
Christy V. Pattengill-Semmens ◽  
Brice X. Semmens ◽  
Phillippe G. Bush ◽  
Mark R. Boardman
Keyword(s):  
Spawning Aggregation ◽  
Cayman Islands ◽  
Nassau Grouper ◽  
Aggregation Site ◽  
Epinephelus Striatus

scholarly journals Onshore transport of settlement-stage Nassau grouper Epinephelus striatus and other fishes in Exuma Sound, Bahamas

1993 ◽  
Vol 98 ◽  
pp. 31-43 ◽  
Author(s):  
JM Shenker ◽  
ED Maddox ◽  
E Wishinski ◽  
A Pearl ◽  
SR Thorrold ◽  
...  
Keyword(s):  
Nassau Grouper ◽  
Epinephelus Striatus
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