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

Dataset homepage

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 2023-06-01.

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.
  • 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.

Sampling Description

Study Extent

NA

Sampling

NA

Method steps

  1. NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

Scientific names are based on the Integrated Taxonomic Information System (ITIS).
  1. Balaenoptera
    common name: baleen whales rank: genus
  2. Cetacea
    common name: cetaceans rank: order
  3. Bulweria bulwerii
    common name: Bulwer's Petrel rank: species
  4. Calonectris diomedea
    common name: Cory's Shearwater rank: species
  5. Delphinidae
    common name: dolphins rank: family
  6. Globicephala
    common name: pilot whales rank: genus
  7. Stercorarius
    rank: genus
  8. Larus
    rank: genus
  9. Charadriiformes
    rank: order
  10. Pandion haliaetus
    common name: Osprey rank: species
  11. Hydrobatidae
    rank: family
  12. Phaethon
    rank: genus
  13. Puffinus puffinus
    common name: Manx Shearwater rank: species
  14. Pterodroma
    rank: genus
  15. Puffinus lherminieri
    common name: Audubon's Shearwater rank: species
  16. Puffinus
    rank: genus
  17. Sula
    rank: genus
  18. Sula dactylatra
    common name: Masked Booby rank: species
  19. Sula sula
    common name: Red-footed Booby rank: species
  20. Stenella clymene
    common name: Clymene Dolphin rank: species
  21. Stenella
    common name: spinner dolphins rank: genus
  22. Onychoprion fuscatus
    common name: Sooty Tern rank: species
  23. Sterna
    rank: genus
  24. Sula leucogaster
    common name: Brown Booby rank: species
  25. Sula
    rank: genus
  26. Cheloniidae
    common name: Sea Turtles rank: family
  27. Tursiops truncatus
    common name: Common Bottlenose Dolphin rank: species
  28. 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
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