Abstract:
The objectives of this project included using fish traps and demersal longlines to describe and examine differences in species assemblage and relative abundance of demersal fishes in the Gulf of Mexico. This dataset reports the samples collected and associated data from May 1 to May 8, 2014. For some species, biological data such as length and weights are reported. Additional data include the dates, set locations (latitudes, longitudes), depth, water temperature, gear deployed and bait used. These data were collected during the R/V Apalachee cruise AP-1405.
Suggested Citation:
Grubbs, R Dean. 2016. Longline trap data collected during R/V Apalachee cruise AP-1405 in the Northern Gulf of Mexico from 2014-05-01 to 2014-05-08.. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7WH2N08
Purpose:
To evaluate the biological diversity and trophic interactions among organisms ranging from primary producers to apex predators and from the deep-sea benthos to the coast. These data contribute to a food web model used to determine risks to ecosystem structure and function and regional economies following from extreme anthropogenic events (e.g., discharged and background hydrocarbon) and adaptive management strategies.
Data Parameters and Units:
AP-1405 R/V Apalachee Longline cruise May 1 to May 8 2014. Set [Project(DC)-Year(YY)-Set Number(###)] Station Name (e.g. DA1 = DeSoto Canyon Transect A, Station 1) Latitude at start and finish of set (decimal degrees) Longitude at start and finish of set (decimal degrees) TDR# Serial number for Lotek temperature/depth recorder deployed on line Temperature (degrees Celsius) Depth min/max (m) Minimum and maximum depths according to ship, later verified with TDR Time in Time at start of deployment (seconds) Time in, Time at deployment (seconds) Time set, Time at end of deployment (seconds) Time haul Time a start of retrieval (seconds) Time out Time at end of retrieval (seconds) Gear/Effort (longline) e.g. Longline 50 hooks (5 18/0, 5 14/0, 10 12/0, 10 11/0, 20 10/0) Gear/Effort (trap) e.g. 3 traps (sm, med, lg) Bait Wind/Sea State Estimated wind speed (knots) Comments, Sediment sampled [TRUE, FALSE] Estimated wave height (meters). ID_Data_sample Specimen number, Set [Project(DC)-Year(YY)-Set Number(###)], SL (cm) Teleosts=standard length (cm) sharks=pre-caudal length FL (cm) Teleosts/sharks= fork length (cm) batoids=disk length (cm) TL (cm) Teleosts=total length (cm) sharks=stretched total length (cm) batoids=total length (cm) crustaceans=total length (cm) DW Batoid=disk width (cm) CW Crustaceans=carapace width (cm) CL Crustaceans=carapace length (cm) Mat Maturity [Y, N] if known Maturity State If known [mature, juvenile, neonate, pup, young of year] TAG # Tag number (Dart or Satellite) if released Hook/Trap Size Capture gear [10/0, 11/0, 12/0, 14/0, 18/0] hook [small, medium, large] trap; rod and reel; dip net Condition Condition if released [E=excellent: struggle during work-up, strong directional swimming upon release G=good: little struggle, strong swimming upon release, mild disorientation possible F=fair: relatively weak and disoriented swimming upon release P=poor: some movement indicating life (e.g. nictitating membranes, gills) but very weak to no active swimming upon release DOA=dead: no movements or life signs] SI Biopsy for stable isotope analyses (# of samples) GN Genetics samples (# of samples) RP Reproductive tract (Y if collected) WM White muscle for purposes other than stable isotopes e.g. mercury analyses (# of samples) BD Blood (# of vials) BI Bile (Y if collected) ST Stomach (Y if collected) AG Aging structure [S=spines, R=rays, O=otoliths, V=vertebrae] Other Any additional tissues collected (e.g. radiocarbon) SP Specimen; whole specimen retained after sampling (Y/N) Vou Voucher; specimen is a voucher retained for museum curation (Y/N).
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