Department of Fisheries Oceanography / SMAST seminar - December 6, 2017 - Tiffany Vidal
When: Wednesday,
December 6, 2017
3:30 PM
-
4:30 PM
Where: New Bedford New Bedford, MA
Description: Department of Fisheries Oceanography
Between a rock and soft bottom: Evaluating the use of hook and line to monitor tautog (Tautoga onitis) in southern Massachusetts
Tiffany Vidal
Massachusetts Division of Marine Fisheries
Wednesday, November 29, 2017
3:30 pm - 4:30 pm
SMAST E, Room 101/102
836 South Rodney French Boulevard, New Bedford, MA
Abstract: Tautog (Tautoga onitis) is a relatively sedentary, slow-growing, and long-lived wrasse species, that supports valuable recreational and commercial fisheries in the North and Mid-Atlantic regions. The Massachusetts Division of Marine Fisheries' synoptic trawl survey has provided an index of abundance for tautog since 1978. Abundance from this time series peaked in the 1980s after which it dramatically declined and has remained low through the present day. However, due to their preference for structured habitat, tautog are not well sampled with bottom-tending trawl gear. Bottom trawls are most effective when sampling featureless substrate (e.g., sand). This raises concern about the efficacy of using trawl-based abundance indices to determine stock status of structure dwelling fish. To evaluate an alternative survey methodology to monitor tautog abundance, we conducted a one year random depth-stratified hook and line pilot study to sample areas with complex bottom types (e.g., rock, cobble, boulder) in Buzzards Bay, Massachusetts. I will discuss how the preliminary results from this study, and the knowledge gained, are shaping our approach to monitoring tautog.
To access the live broadcasting you will have to login as smast@umassd.edu with the password: smastumassd
The link to the login is:
https://echo360.org/home
Don't forget to click on I am not a robot.
After login you will have to click on ALL CLASSES (MAR 700 - 01 - DEOS Seminar or MAR 700 - 02 - DFO Seminar) and click on the green LIVE streaming.
To view a video of an SMAST seminar (post-October 1, 2014), go to http://www.umassd.edu/smast/newsandevents/seminarseries/ and click on a highlighted title.
For more information, please contact cfox@umassd.edu
Between a rock and soft bottom: Evaluating the use of hook and line to monitor tautog (Tautoga onitis) in southern Massachusetts
Tiffany Vidal
Massachusetts Division of Marine Fisheries
Wednesday, November 29, 2017
3:30 pm - 4:30 pm
SMAST E, Room 101/102
836 South Rodney French Boulevard, New Bedford, MA
Abstract: Tautog (Tautoga onitis) is a relatively sedentary, slow-growing, and long-lived wrasse species, that supports valuable recreational and commercial fisheries in the North and Mid-Atlantic regions. The Massachusetts Division of Marine Fisheries' synoptic trawl survey has provided an index of abundance for tautog since 1978. Abundance from this time series peaked in the 1980s after which it dramatically declined and has remained low through the present day. However, due to their preference for structured habitat, tautog are not well sampled with bottom-tending trawl gear. Bottom trawls are most effective when sampling featureless substrate (e.g., sand). This raises concern about the efficacy of using trawl-based abundance indices to determine stock status of structure dwelling fish. To evaluate an alternative survey methodology to monitor tautog abundance, we conducted a one year random depth-stratified hook and line pilot study to sample areas with complex bottom types (e.g., rock, cobble, boulder) in Buzzards Bay, Massachusetts. I will discuss how the preliminary results from this study, and the knowledge gained, are shaping our approach to monitoring tautog.
To access the live broadcasting you will have to login as smast@umassd.edu with the password: smastumassd
The link to the login is:
https://echo360.org/home
Don't forget to click on I am not a robot.
After login you will have to click on ALL CLASSES (MAR 700 - 01 - DEOS Seminar or MAR 700 - 02 - DFO Seminar) and click on the green LIVE streaming.
To view a video of an SMAST seminar (post-October 1, 2014), go to http://www.umassd.edu/smast/newsandevents/seminarseries/ and click on a highlighted title.
For more information, please contact cfox@umassd.edu
Contact: > See Description for contact information
Topical Areas: School for Marine Sciences and Technology, SMAST Seminar Series