yftDMraw: Yellowfin Tuna Stomach Contents Matrix Raw Data

yftDMrawR Documentation

Yellowfin Tuna Stomach Contents Matrix Raw Data

Description

Yellowfin tuna (YFT) were captured by purse-seine fishing vessels in the eastern tropical Pacific (ETP) between 16 August 2003 and 16 November 2005.

Usage

yftDMraw

Format

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

Details

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.

References

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.


pkuhnert/diet documentation built on June 10, 2025, 2:59 a.m.