yftDMraw | R Documentation |
Yellowfin tuna (YFT) were captured by purse-seine fishing vessels in the eastern tropical Pacific (ETP) between 16 August 2003 and 16 November 2005.
yftDMraw
A data frame with 571 observations on the following 40 variables.
TripSetNo
A unique number representing the purse-seine vessel's Trip and Set number
TripSetPredNo
A unique number representing the purse-seine vessel's Trip and Set number, and the YFT sample number
Date
Date YFT was captured
Quarter
Quarter in which YFT was captured
Year
Year in which YFT was captured
Lat
Latitude coordinates where YFT was captured
Lon
Longitude coordinates where YFT was captured
SST
Sea-surface temperature at location where YFT was captured, measured in degrees C
Length
Length, measured as fork length, of YFT in mm
PredSpp
Predator Species Name
Fullness
Visual estimate of YFT stomach fullness, expressed as a percentage
Argonautidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Balistidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
BivalviaC
A prey item, identified to Class level of taxonomy, found in YFT stomach contents
Bramidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Carangidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Clupeidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Coryphaenidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
DecapodaO
A prey item, identified to Order level of taxonomy, found in YFT stomach contents
Engraulidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Exocoetidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Galatheidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
GastropodaC
A prey item, identified to Class level of taxonomy, found in YFT stomach contents
Gempylidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Hemiramphidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Hemisquillidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Loliginidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Myctophidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Nomeidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Octopodidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Ommastrephidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Ostraciidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Penaeidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Phosichthyidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Portunidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Scombridae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Squillidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
StomatopodaO
A prey item, identified to Order level of taxonomy, found in YFT stomach contents
Tetraodontidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Thysanoteuthidae
A prey item, identified to Family level of taxonomy, found in YFT stomach contents
Yellowfin Tuna were sampled onboard the vessels by observers of the Inter-American Tropical Tuna Commission (IATTC, 2004). Fish were randomly subsampled from purse-seine sets immediately after capture, and date, position, and sea-surface temperature (SST) were recorded for each set that yielded samples. Observers measured fork length of the fish, removed samples of white muscle tissue from the dorsal musculature adjacent to the second dorsal fin and stored them at about -20 degrees C until processed further in the lab. Data is in matrix format where each row represents one YFT.
Olson RJ, Popp BN, Graham BS, Lopez-Ibarra GA, Galvan-Magana F, Lennert-Cody CE, Bocanegra-Castillo N, Wallsgrove NJ, Gier E, Alatorre-Ramirez V, Balance LT, Fry B (2010) Food web inferences of stable isotope spatial patterns in copepods and yellowfin tuna in the pelagic eastern Pacific Ocean. Prog Oceanogr.
IATTC, 2004. Annual Report of the Inter-American Tropical Tuna Commission, 2003. Inter-American Tropical Tuna Commission, pp. 98.
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