Seabird and cetacean sightings from Cruise SY002 of RV Shoyo Maru, Tropical Atlantic Ocean, Oct. 2000

Philippe Borsa

doi:10.15468/x5dbhn

Seabird and cetacean sightings from Cruise SY002 of RV Shoyo Maru, Tropical Atlantic Ocean, Oct. 2000

Citation

Borsa, P. 2012. Seabird and cetacean sightings from Cruise SY002 of RV Shoyo Maru, Tropical Atlantic Ocean, Oct. 2000. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/729) on yyyy-mm-dd. https://doi.org/10.15468/x5dbhn accessed via GBIF.org on 2025-07-17.

Description

Original provider: Philippe Borsa, Institut de Recherche pour le Developpement, Departement des Ressources Vivantes Dataset credits: Institut de Recherche pour le Developpement, Departement des Ressources Vivantes Abstract: The international program BETYP on the bigeye tuna (Thunnus obesus) allowed us to board the Japanese research vessel Shoyo Maru. During this mission, the longline vessel was rigged to carry out four crossings of the Atlantic Ocean. The mission conducted from September 28 to October 26, 2000 corresponds to the first that crosses the Atlantic from west to east. The first operation of project THETIS (UR No. 109 of the IRD) is focused on the study of predator-prey relationships. The program will study the food and trophic relationships of tunas and associated species in four regions of the Indian Ocean and three of the Atlantic. The platform of the Shoyo Maru in the Atlantic was a good opportunity to collect stomach contents of fish caught by longline. Purpose: Mission Objectives:

Recovery of water samples at different depths to measure concentrations of nitrite.
Recovery of stomachs of tunas caught by longline and species associated.
Study of potential prey for tuna trawling by day and night in the diffusing layer or deep scattering layer (DSL). Particular attention was paid to Vinciguerria nimbaria. The PICOLO program has highlighted the important role of this prey species for tunas in the equatorial Atlantic.
Collection of otoliths of bigeye tuna (Thunnus obesus) and yellowfin (Thunnus albacares) caught during fishing operations.
For this mission, tissue samples for the study of genetic populations of some species have been collected. Observations of cetaceans and seabirds were also conducted. Supplemental information: [2020-09-30] The following invalid species names were corrected according to the Integrated Taxonomic Information System (ITIS). Sooty Tern: Sterna fuscata (176894) => Onychoprion fuscatus (824105) An additional sea turtle, Caretta caretta was captured on a longline set for tuna, but the exact time and coordinates of that observation were not available.

Records that had an estimated count of “plusieurs” were given a conservative count of “2.” When an estimated range of animals was sighted, the median value (rounded down) was used as the observed count; when a minimum number of animals was recorded, the minimum number was used as the observed count (i.e., >100 = 100 animals).

Purpose

Mission Objectives:

Recovery of water samples at different depths to measure concentrations of nitrite.
Recovery of stomachs of tunas caught by longline and species associated.
Study of potential prey for tuna trawling by day and night in the diffusing layer or deep scattering layer (DSL). Particular attention was paid to Vinciguerria nimbaria. The PICOLO program has highlighted the important role of this prey species for tunas in the equatorial Atlantic.
Collection of otoliths of bigeye tuna (Thunnus obesus) and yellowfin (Thunnus albacares) caught during fishing operations.

Sampling Description

Study Extent

NA

Sampling

NA

Method steps

NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

Scientific names are based on the Integrated Taxonomic Information System (ITIS).

Balaenoptera
common name: baleen whales rank: genus
Cetacea
common name: cetaceans rank: order
Bulweria bulwerii
common name: Bulwer's Petrel rank: species
Calonectris diomedea
common name: Cory's Shearwater rank: species
Delphinidae
common name: dolphins rank: family
Globicephala
common name: pilot whales rank: genus
Stercorarius
rank: genus
Larus
rank: genus
Charadriiformes
rank: order
Pandion haliaetus
common name: Osprey rank: species
Hydrobatidae
rank: family
Phaethon
rank: genus
Puffinus puffinus
common name: Manx Shearwater rank: species
Pterodroma
rank: genus
Puffinus lherminieri
common name: Audubon's Shearwater rank: species
Puffinus
rank: genus
Sula
rank: genus
Sula dactylatra
common name: Masked Booby rank: species
Sula sula
common name: Red-footed Booby rank: species
Stenella clymene
common name: Clymene Dolphin rank: species
Stenella
common name: spinner dolphins rank: genus
Onychoprion fuscatus
common name: Sooty Tern rank: species
Sterna
rank: genus
Sula leucogaster
common name: Brown Booby rank: species
Sula
rank: genus
Cheloniidae
common name: Sea Turtles rank: family
Tursiops truncatus
common name: Common Bottlenose Dolphin rank: species
Hyperoodontidae
rank: family

Geographic Coverages

Oceans

Bibliographic Citations

Contacts

Philippe Borsa
originator
position: Primary contact
IRD - UR 227 Biocomplexité des écosystèmes récifaux
email: philippe.borsa@ird.fr

OBIS-SEAMAP
metadata author
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu

OBIS-SEAMAP
distributor
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu

Philippe Borsa
owner
position: Primary contact
IRD - UR 227 Biocomplexité des écosystèmes récifaux
email: philippe.borsa@ird.fr

Philippe Borsa
administrative point of contact
position: Primary contact
IRD - UR 227 Biocomplexité des écosystèmes récifaux
email: philippe.borsa@ird.fr