Killer whales occurrences in Venezuelan waters 1982-2008
Citation
Bolanos, J. 2010. Killer whales occurrences in Venezuelan waters 1982-2008. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/522) on yyyy-mm-dd. https://doi.org/10.15468/2vvyu7 accessed via GBIF.org on 2023-09-23.Description
Original provider: Jaime Bolaños-Jiménez Dataset credits: Jaime Bolaños-Jiménez Abstract: Reported occurrences of the killer whale (Orcinus orca) off Venezuela are scarce. Eighteen records were opportunistically collected from April 1982 through January 2008. Bottom depth for the sightings was 10-1,500 m (mean = 444 + SD = 405; mode = 400, n = 18). Five records had available associated still photographs or video. Noteworthy was a videotaped attack by two killer whales on a leatherback turtle (Dermochelys coriacea). Group size ranged from 1-5 individuals (mean = 2.67 + SD = 1.57; mode = 1, n = 18). Adult males were present during 67% of reported sightings; females/juveniles were present in 61% (n = 12 and 11, respectively). Pictures of two male killer whales were sent to researchers in Brazil and the Bahamas for comparison purposes. Adult males were present in 92% of reported sightings. Females and juveniles were observed during 67% of reported sightings. 83% of the records were from December through May. There is currently not enough information to speculate on any seasonality to the occurrence of this species in Venezuelan waters. Purpose: The purpose of this work was to update information on killer whale occurrences in Venezuelan waters, on the basis of opportunistic sightings and/or pictures provided by non-professional observers. Supplemental information: A few records did not record day or day and month. For these records, month and day fields were filled with 1. A note was added to [remarks] field, which may be released upon the data provider's permission.Purpose
The purpose of this work was to update information on killer whale occurrences in Venezuelan waters, on the basis of opportunistic sightings and/or pictures provided by non-professional observers.Sampling Description
Study Extent
NASampling
NAMethod steps
- NA
Additional info
marine, harvested by iOBISTaxonomic Coverages
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
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Orcinus orcacommon name: Killer Whale rank: species
Geographic Coverages
Oceans
Bibliographic Citations
Contacts
Jaime Bolanosoriginator
position: Primary contact
Sea Vida
email: megapterax@yahoo.com
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
Jaime Bolanos
owner
position: Primary contact
Sea Vida
email: megapterax@yahoo.com
Jaime Bolanos
administrative point of contact
position: Primary contact
Sea Vida
email: megapterax@yahoo.com