Integrated Taxonomic Information SystemIntegrated Taxonomic Information Systemhttp://www.itis.usda.gov/Downloaded April, 2004Refer to the contact information of the datasetKingdomAnimalia202423PhylumChordata158852SubphylumVertebrata331030ClassMammalia179913SubclassTheria179916InfraclassEutheria179925OrderCetacea180403SuborderMysticeti552298FamilyBalaenopteridae180522GenusBalaenoptera180523SuborderOdontoceti180404FamilyDelphinidae180415GenusStenella180428SpeciesStenella frontalis552460GenusTursiops180425SpeciesTursiops truncatus180426
Jaime Bolaños-JiménezWhen <i>Stenella frontalis</i> and <i>Tursiops truncatus</i> were sighted together, they were contained in one record as 'sf+tt' and their group size included both species. In OBIS-SEAMAP, these records were classified as Delphinidae (TSN: 180415). All Delphinidae records are for 'st+tt' sightings.<br><br>
In the original data, the group size can be a range (e.g., 30-40). In OBIS-SEAMAP, a mid-value is taken for those having range values. Currently, research on cetaceans is being conducted by the primary dataset contact and the non-governmental organization Sea Vida team.As part of an effort to assess the actual status of the Venezuelan cetaceans, Profauna (the Venezuela Fish and Wildlife Service) is conducting a two-year field research project on the State of Aragua, central coast of Venezuela. It is the first step to get baseline information to devise an action plan for the conservation and research of marine mammals. So far, one flight and 24 boat surveys have been made between October 1996 and June, 1997. During this period, 30 sightings were recorded over the continental shelf. Relative frequencies were as follows: 50% Atlantic spotted dolphins (<i>Stenella frontalis</i>), 17% bottlenose dolphins (<i>Tursiops truncatus</i>), 10% mixed aggregations of these two species, 17% unidentified dolphins and 6% unidentified (Balaenopterid) whales. Group size for <i>Tursiops truncatus</i> ranged from 1-15 individuals and from three to more than 300 for <i>S. frontalis</i>. Spotted dolphins showed a sociable behavior by bowriding, escorting and 'playing' around the boat from only a few minutes to more than one hour. Bottlenose dolphins, on the other hand, very seldom showed this behavior, being rather shy most of the time. While watching a school of more that 300 spotted dolphins underwater, 25 animals bowrode and escorted the boat; as the boat reduced speed while circling the area they dived to 45-60 feet, looping back to the stern of the boat and then bowrode again. This behavior was displayed several times and was always made by the same subgroup. In one of the rare occasions when 10 <i>Tursiops</i> were bowriding, another school of <i>S. frontalis</i> joined them and started bowriding too. Preliminary results suggest the presence of coastal populations of dolphins along the study area during most of the year and, possibly, daily easterly or westerly movements (parallel to the coastline). <i>Stenella frontalis</i> is the most abundant species both in absolute numbers and sighting frequency. Further research will provide information about seasonality of whales presence, as claimed by fishermen. These are preliminary results of Project DLAM 009, funded by <a href=http:/www.fundacite.arg.gov.ve>Fundacite Aragua</a>.This study was made with the purpose of generating baseline information of the cetaceans inhabiting the central coast of Venezuela.Bolanos, J2009Current status of cetaceans in Aragua, Venezuelahttp://seamap.env.duke.edu/dataset/484OBIS-SEAMAP484http://seamap.env.duke.edu/dataset/484OBIS-SEAMAPground condition1996100819970718None planned-67.767-67.60810.5210.499-67.767-67.60810.5210.499State of AraguaNoneVesselsSightingsCetacean conservation and managementVenezuelaNoneState of AraguaAtlantic spotted dolphinCommon bottlenose dolphinOpen public unless otherwise noted. See Use Constraints for details.1. Not to use data obtained from OBIS-SEAMAP in any publication, product, or commercial application without proper attribution to the original data provider(s) and OBIS-SEAMAP unless the datasets are explicitly shown under the CC0 policy. Citations or credits are suggested as attribution. If the data you downloaded come from multiple datasets, a citation or credit to each of the datasets is required.
Suggested citation for this dataset
Bolanos, J. 2009. Current status of cetaceans in Aragua, Venezuela. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/484) on yyyy-mm-dd.
Suggested citation for OBIS-SEAMAP:
Halpin, P.N., A.J. Read, E. Fujioka, B.D. Best, B. Donnelly, L.J. Hazen, C. Kot, K. Urian, E. LaBrecque, A. Dimatteo, J. Cleary, C. Good, L.B. Crowder, and K.D. Hyrenbach. 2009. OBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributions. Oceanography 22(2):104-115
2. To forward the citation of any publication / report that made use of the data / tools provided by OBIS-SEAMAP for inclusion in our list of references.
3. Not to hold OBIS-SEAMAP or the original data providers liable for errors in the data. While we have made every effort to ensure the quality of the database, we cannot guarantee the accuracy of these datasets.
4. The burden for determining fitness for use of the downloaded data for any analyses lies entirely with the user. OBIS-SEAMAP or the original data providers do not support outcomes of your analyses that used the data you downloaded from OBIS-SEAMAP.
5. To consider inclusion of the accompanying transect (effort) dataset if available into the methodology of your analyses.
6. Not to redistribute the data you downloaded from OBIS-SEAMAP through any media without contect from OBIS-SEAMAP and the original data providers unless the datasets are explicitly shown under the CC0 policy.ShapefileBolaños, J.J., A.M.Z. Campo and M.E. González-Fernández1998Determinación del estado actual de los cetáceos de las costas del estado Aragua: Resultados de la etapa IIT/MARNR/386, Serie Informes Técnicos, Ministerio del Ambiente, Caracas, Venezuela41http://www.mardecetaceos.net/media_files/download/BolanosetalInformeCetaceosdeAraguaEtapaI.1998.pdfBolanos-J, J. and M. Campo1998Aspects of the ecology and behavior of cetacean populations in the State of Aragua, Central coast of VenezuelaAbstracts Book, the World Marine Mammal Science Conference, Montecarlo, Monaco, January 199817Jaime BolanosSea Vidamailing and physical addressA.P. 162CaguaAragua2122Venezuela+582443960393megapterax@yahoo.comRelational databaseHalpin, P.N., A.J. Read, E. Fujioka, B.D. Best, B. Donnelly, L.J. Hazen, C. Kot, K. Urian, E. LaBrecque, A. Dimatteo, J. Cleary, C. Good, L.B. Crowder, and K.D. Hyrenbach2009OBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributionsOceanography22(2):104-115http://www.tos.org/oceanography/article/obis-seamap-the-world-data-center-for-marine-mammal-sea-bird-and-sea-turtle
OBIS-SEAMAPNicholas School of Environment, Duke Univ.mailing and physical addressA328, LSRCDurhamNC27708USA919-613-8021seamap-contact@duke.eduNot to hold OBIS-SEAMAP liable for errors in the data. While we have made every effort to ensure the quality of the database, we cannot guarantee the accuracy of these datasets.
Also please refer to Use Constraints.FreeGo to the OBIS-SEAMAP web sitezipzipped shapefilehttp://seamap.env.duke.edu/dataset/484OBIS-SEAMAP Dataset ID 484Ei FujiokaDuke Universitymailing and physical addressLSRC A328DurhamNCUSA27708efujioka@duke.edu919-613-8021http://www.nbii.gov/Biological Data Profile2016042220160422All observation records are included.Permissible values for date and time and coordinates were validated by the data provider and the OBIS-SEAMAP data manager. Species identification by the data provider was matched with Integrated Taxonomic Information System.Data were put through the OBIS-SEAMAP data registration steps.20090212Jaime Bolaños-JiménezBiogeographic dataBiogeographic dataNot applicablerow_idsighting indexData providersighting indexobs_datedate of observationData providerdate of observationobs_timetime of observationData providertime of observationlatitudelatitude at time of observation in decimal degreesData providerlatitude at time of observation in decimal degreeslongitudelongitude at time of observation in decimal degreesData providerlongitude at time of observation in decimal degreesspeciesspecies codes assigned by data providerData providerspecies codes assigned by data providersp_tsnITIS taxonomic serial numberData providerITIS taxonomic serial numbergroup_sizeGroup size in text format. Can be a range.Data providerGroup size in text format. Can be a range.obs_countInteger group size derived from group_size. Mid value taken for those having range values.Data providerInteger group size derived from group_size. Mid value taken for those having range values.effortEffort in hoursData providerEffort in hoursgeomdefinition not providedData providerdefinition not providedoidUnique ID number (generated by SEAMAP)Data providerUnique ID number (generated by SEAMAP)GCS_WGS_1984Decimal degrees0.00010.0001D_WGS_1984WGS_19846378137.000000298.257224