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SEFSC Metadata Library > POPULATION & ECOSYSTEMS MONITORING DIV > Galveston Fisheries Ecology Projects > Burrowing behavior of penaeid shrimps >

Penaeid_Shrimp_Burrowing_Data

Entity (ENT)  |  Southeast Fisheries Science Center (SEFSC)
GUID: gov.noaa.nmfs.inport:33875  |  Updated: August 9, 2022  |  Published / External 
Summary
Item Identification
Entity Info
Data Attributes
Catalog Details

Summary

Abstract

Brown shrimp, Farfantepenaeus aztecus, and white shrimp, Litopenaeus setiferus, were held were held under natural light conditions before experiments. Experiments were conducted in twelve rectangular tanks (58 cm x 149 cm) under fluorescent lighting (7-10 microEinsteins/sec/sq m). Shrimp were placed in randomly-assigned tanks the day before observations were initiated at 0730 h, the lights were turned on, and observations of thepercentage of shrimp burrowed ( 1/2 of their body beneath the substrate) were recorded hourly (starting at 0830 h) throughout the daylight hours. For both species, burrowing rates decreased significantly as the substrate became courser. Brown shrimp burrowing was marginally affected by salinity with the lowest burrowing rates at 5 ppt white shrimp burrowing was not significantly affected by salinity. Large brown shrimp burrowed more than small and medium sized shrimp, but size did not significantly affect burrowing of white shrimp. The presence of a fish predator in the tanks did not affect burrowing of either species, but hunger level significantly affected burrowing for both species.

Description

"Juvenile shrimp were collected in the Galveston Bay system of Texas, U.S.A. and held before experiments in the laboratory under natural light conditions (skylights) in fiberglass tanks with a crushed shell substrate. Burrowing experiments were conducted in twelve rectangular tanks (58 cm x 149 cm; 0.86 m2 area) located in a dark temperature controlled room equipped with fluorescent lighting and under a 12:12 h day:night light regime. Light was constant during the daylight period in these experimental tanks and was measured near the substrate using a LI-COR quantum meter (Model LI-185B). From 10 observations in each tank during the simulated daylight hours, the mean intensity was 10.6 (SE=0.18) ¿E (microEinsteins) s-1m-2. This light intensity is comparable to the light reaching the bay bottom during a sunny day when incident light at the water’s surface is ~ 1000-2000 ¿E s-1m-2 and the following approximate conditions occur: water depth 2 m, nephelometric turbidity 20 FTUs, an attenuation coefficient (Kd) of 2.0, and a Secchi disk depth of 0.5-0.7 m. Tanks were filled to a depth of 25 cm with sand-filtered seawater pumped from the Gulf of Mexico off Galveston Island.

When possible, treatments were randomly applied to tanks; the exception was for substrate experiments where different substrates remained in the same tanks throughout the experimental series. Shrimp from holding tanks, however, were randomly placed in tanks during all experiments. Shrimp were moved from holding tanks to experimental tanks in the afternoon on the day before observations were initiated. At 0730 h the next day, the lights came on, and observations on behavior were recorded hourly (starting at 0830 h) throughout the daylight hours (generally 10 hourly observations during the day). Black plastic curtains surrounded each tank, and observations were made through small portals to avoid disturbance. During each hourly observation period, individual shrimp were categorized into one of eight behaviors."

Entity Information

Entity Type
Data Table

Data Attribute / Type Description
Shrimp species
CHAR 		Brown shrimp, Farfantepenaeus aztecus, or white shrimp, Litopenaeus setiferus
Experiment
CHAR 		Identifies the experimental factor examined
Date
NUMBER 		Date the experiment was conducted
Block
CHAR 		The same experiments were conducted on two separate days, Day1 and Day2
Time
NUMBER 		Military time
Treatment
CHAR 		Treatement examined in each experiment
Tank
CHAR 		Experimental tank
Completely Burrowed
NUMBER 		Number of shrimp in tank that were completely burrowed
Eyes Showing
NUMBER 		Number of shrimp in tank that had their eyes showing above substrate
Head Showing
NUMBER 		Number of shrimp in tank that had their head showing above substrate
More than Half Burrowed
NUMBER 		Number of shrimp in tank that were more than half beneath the substrate
Less than Half Burrowed
NUMBER 		Number of shrimp in tank that were less than half beneath the substrate
Stationary
NUMBER 		Number of shrimp in tank that were stationary on the substrate
Crawling
NUMBER 		Number of shrimp in tank that were crawling on the substrate
Swimming
NUMBER 		Number of shrimp in tank that were swimming
Number Present
NUMBER 		Number of shrimp in tank used to calculate percentages
Final Count
NUMBER 		Number of shrimp in tank at end of experiment
Percent Burrowed
NUMBER 		Percentage of shrimp in tank burrowed (more than half beneath substrate)

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No Child Items for this record.

Contact Information

No contact information is available for this record.

Please contact the owner organization (SEFSC) for inquiries on this record.

Item Identification

Title: Penaeid_Shrimp_Burrowing_Data
Abstract:

Brown shrimp, Farfantepenaeus aztecus, and white shrimp, Litopenaeus setiferus, were held were held under natural light conditions before experiments. Experiments were conducted in twelve rectangular tanks (58 cm x 149 cm) under fluorescent lighting (7-10 microEinsteins/sec/sq m). Shrimp were placed in randomly-assigned tanks the day before observations were initiated at 0730 h, the lights were turned on, and observations of thepercentage of shrimp burrowed ( 1/2 of their body beneath the substrate) were recorded hourly (starting at 0830 h) throughout the daylight hours. For both species, burrowing rates decreased significantly as the substrate became courser. Brown shrimp burrowing was marginally affected by salinity with the lowest burrowing rates at 5 ppt white shrimp burrowing was not significantly affected by salinity. Large brown shrimp burrowed more than small and medium sized shrimp, but size did not significantly affect burrowing of white shrimp. The presence of a fish predator in the tanks did not affect burrowing of either species, but hunger level significantly affected burrowing for both species.
Purpose:

Study of shrimp behavior

Entity Information

Entity Type: Data Table
Description:

"Juvenile shrimp were collected in the Galveston Bay system of Texas, U.S.A. and held before experiments in the laboratory under natural light conditions (skylights) in fiberglass tanks with a crushed shell substrate. Burrowing experiments were conducted in twelve rectangular tanks (58 cm x 149 cm; 0.86 m2 area) located in a dark temperature controlled room equipped with fluorescent lighting and under a 12:12 h day:night light regime. Light was constant during the daylight period in these experimental tanks and was measured near the substrate using a LI-COR quantum meter (Model LI-185B). From 10 observations in each tank during the simulated daylight hours, the mean intensity was 10.6 (SE=0.18) ¿E (microEinsteins) s-1m-2. This light intensity is comparable to the light reaching the bay bottom during a sunny day when incident light at the water’s surface is ~ 1000-2000 ¿E s-1m-2 and the following approximate conditions occur: water depth 2 m, nephelometric turbidity 20 FTUs, an attenuation coefficient (Kd) of 2.0, and a Secchi disk depth of 0.5-0.7 m. Tanks were filled to a depth of 25 cm with sand-filtered seawater pumped from the Gulf of Mexico off Galveston Island.

When possible, treatments were randomly applied to tanks; the exception was for substrate experiments where different substrates remained in the same tanks throughout the experimental series. Shrimp from holding tanks, however, were randomly placed in tanks during all experiments. Shrimp were moved from holding tanks to experimental tanks in the afternoon on the day before observations were initiated. At 0730 h the next day, the lights came on, and observations on behavior were recorded hourly (starting at 0830 h) throughout the daylight hours (generally 10 hourly observations during the day). Black plastic curtains surrounded each tank, and observations were made through small portals to avoid disturbance. During each hourly observation period, individual shrimp were categorized into one of eight behaviors."

Data Attributes

Attribute Summary

Rubric Score Primary Key? Name Type Description
100
 Shrimp species CHAR Brown shrimp, Farfantepenaeus aztecus, or white shrimp, Litopenaeus setiferus
100
 Experiment CHAR Identifies the experimental factor examined
100
 Date NUMBER Date the experiment was conducted
100
 Block CHAR The same experiments were conducted on two separate days, Day1 and Day2
100
 Time NUMBER Military time
100
 Treatment CHAR Treatement examined in each experiment
100
 Tank CHAR Experimental tank
100
 Completely Burrowed NUMBER Number of shrimp in tank that were completely burrowed
100
 Eyes Showing NUMBER Number of shrimp in tank that had their eyes showing above substrate
100
 Head Showing NUMBER Number of shrimp in tank that had their head showing above substrate
100
 More than Half Burrowed NUMBER Number of shrimp in tank that were more than half beneath the substrate
100
 Less than Half Burrowed NUMBER Number of shrimp in tank that were less than half beneath the substrate
100
 Stationary NUMBER Number of shrimp in tank that were stationary on the substrate
100
 Crawling NUMBER Number of shrimp in tank that were crawling on the substrate
100
 Swimming NUMBER Number of shrimp in tank that were swimming
100
 Number Present NUMBER Number of shrimp in tank used to calculate percentages
100
 Final Count NUMBER Number of shrimp in tank at end of experiment
100
 Percent Burrowed NUMBER Percentage of shrimp in tank burrowed (more than half beneath substrate)

Attribute Details

Shrimp species

CC ID: 340818
Seq. Order: 1
Data Storage Type: CHAR
Max Length: 12
Required: No
Primary Key: No
Status: Active
Description:

Brown shrimp, Farfantepenaeus aztecus, or white shrimp, Litopenaeus setiferus

Experiment

CC ID: 340819
Seq. Order: 2
Data Storage Type: CHAR
Max Length: 10
Required: No
Primary Key: No
Status: Active
Description:

Identifies the experimental factor examined

Date

CC ID: 340820
Seq. Order: 3
Data Storage Type: NUMBER
Max Length: 8
Required: No
Primary Key: No
Status: Active
Description:

Date the experiment was conducted

Block

CC ID: 340821
Seq. Order: 4
Data Storage Type: CHAR
Max Length: 4
Required: No
Primary Key: No
Status: Active
Description:

The same experiments were conducted on two separate days, Day1 and Day2

Time

CC ID: 340822
Seq. Order: 5
Data Storage Type: NUMBER
Max Length: 4
Required: No
Primary Key: No
Status: Active
Description:

Military time

Treatment

CC ID: 340823
Seq. Order: 6
Data Storage Type: CHAR
Max Length: 20
Required: No
Primary Key: No
Status: Active
Description:

Treatement examined in each experiment

Tank

CC ID: 340824
Seq. Order: 7
Data Storage Type: CHAR
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Experimental tank

Completely Burrowed

CC ID: 340825
Seq. Order: 8
Data Storage Type: NUMBER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Number of shrimp in tank that were completely burrowed

Eyes Showing

CC ID: 340826
Seq. Order: 9
Data Storage Type: NUMBER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Number of shrimp in tank that had their eyes showing above substrate

Head Showing

CC ID: 340827
Seq. Order: 10
Data Storage Type: NUMBER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Number of shrimp in tank that had their head showing above substrate

More than Half Burrowed

CC ID: 340828
Seq. Order: 11
Data Storage Type: NUMBER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Number of shrimp in tank that were more than half beneath the substrate

Less than Half Burrowed

CC ID: 340829
Seq. Order: 12
Data Storage Type: NUMBER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Number of shrimp in tank that were less than half beneath the substrate

Stationary

CC ID: 340830
Seq. Order: 13
Data Storage Type: NUMBER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Number of shrimp in tank that were stationary on the substrate

Crawling

CC ID: 340831
Seq. Order: 14
Data Storage Type: NUMBER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Number of shrimp in tank that were crawling on the substrate

Swimming

CC ID: 340832
Seq. Order: 15
Data Storage Type: NUMBER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Number of shrimp in tank that were swimming

Number Present

CC ID: 340833
Seq. Order: 16
Data Storage Type: NUMBER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Number of shrimp in tank used to calculate percentages

Final Count

CC ID: 340834
Seq. Order: 17
Data Storage Type: NUMBER
Max Length: 2
Required: No
Primary Key: No
Status: Active
Description:

Number of shrimp in tank at end of experiment

Percent Burrowed

CC ID: 340835
Seq. Order: 18
Data Storage Type: NUMBER
Max Length: 3
Required: No
Primary Key: No
Status: Active
Description:

Percentage of shrimp in tank burrowed (more than half beneath substrate)

Catalog Details

Catalog Item ID: 33875
GUID: gov.noaa.nmfs.inport:33875
Metadata Record Created By: David Huddleston
Metadata Record Created: 2016-08-01 10:47+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2021-10-21
Owner Org: SEFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2021-10-21
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2022-10-21