A note on strandings of Bryde's whales (Balaenoptera edeni) in the southwestern Atlantic

The aim of the present study is to trace a diagnosis of Bryde´s whale (Balaenoptera edeni) strandings in jurisdictional Brazilian waters through the compilation of published records and those conveyed in communication channels. During 1972 and 2015, 74 strandings were documented between the states o...

Full description

Saved in:
Bibliographic Details
Published in:The journal of cetacean research and management Vol. 21; no. 1; pp. 9 - 15
Main Author: Lima, Eduardo Cabral Casado
Format: Journal Article
Language:English
Published: Cambridge International Whaling Commission 10.09.2020
Subjects:
Abundance
Anthropogenic factors
Aquatic mammals
Balaenoptera brydei
Females
Marine mammals
Population growth
Records
Seasonal variations
Seasonality
Sexual maturity
Statistical methods
Stranding
ISSN:1561-0713, 2312-2706, 2312-2692
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract The aim of the present study is to trace a diagnosis of Bryde´s whale (Balaenoptera edeni) strandings in jurisdictional Brazilian waters through the compilation of published records and those conveyed in communication channels. During 1972 and 2015, 74 strandings were documented between the states of Rio Grande do Sul and Rio de Janeiro, Bahia and Maranhão. The results point out statistically significant differences between the frequencies of strandings in relation to Brazilian regions (χ² = 103.17), with the highest abundance found for the Southeast region (71.62%). Statistically significant differences were also observed between stranding frequency and sexual maturity (χ² = 12.31), with a higher abundance for sexually mature females(54.25%). No statistically significant difference between the stranding frequency in relation to seasonality (χ² = 2.34) was observed. Regarding sex, no statistically significant difference between stranding frequency for males and females was found (χ²=3.12). A trend of increasing B.edeni strandings was observed from the 1980s onwards, by the use of a simple linear regression. This may be due to population growth of the species, increased monitoring throughout the Brazilian coast, and/or increased anthropogenic threats. Thus,stranding monitoring is important for the adoption of conservation measures for this species, as well as for the determination of regional stocks through genetic analyses.  
AbstractList The aim of the present study is to trace a diagnosis of Bryde´s whale (Balaenoptera edeni) strandings in jurisdictional Brazilian waters through the compilation of published records and those conveyed in communication channels. During 1972 and 2015, 74 strandings were documented between the states of Rio Grande do Sul and Rio de Janeiro, Bahia and Maranhão. The results point out statistically significant differences between the frequencies of strandings in relation to Brazilian regions (χ² = 103.17), with the highest abundance found for the Southeast region (71.62%). Statistically significant differences were also observed between stranding frequency and sexual maturity (χ² = 12.31), with a higher abundance for sexually mature females(54.25%). No statistically significant difference between the stranding frequency in relation to seasonality (χ² = 2.34) was observed. Regarding sex, no statistically significant difference between stranding frequency for males and females was found (χ²=3.12). A trend of increasing B.edeni strandings was observed from the 1980s onwards, by the use of a simple linear regression. This may be due to population growth of the species, increased monitoring throughout the Brazilian coast, and/or increased anthropogenic threats. Thus,stranding monitoring is important for the adoption of conservation measures for this species, as well as for the determination of regional stocks through genetic analyses.  
This study analysed 74 records of Bryde's whale strandings in jurisdictional Brazilian waters in order to further understanding of strandings in the region. Collation of records published in the media (newspapers, magazines, TV, online sources) and in peer-reviewed articles revealed 74 documented strandings between 1972 and 2015 along the coasts of Rio Grande do Sul, and Rio de Janeiro, Bahia and Maranhão states. Statistically significant differences were found between the frequencies of strandings in relation to Brazilian regions (χ² = 103.17), with the highest abundance found in the Southeast region (71.62%). Statistically significant differences were also observed between stranding frequency and sexual maturity (χ² = 12.31), with a higher abundance for sexually mature females (54.25%). No statistically significant difference between the stranding frequency in relation to seasonality (χ² = 2.8) was observed. No statistically significant difference between stranding frequency for males and females was found (χ² = 3.12). A simple linear regression showed an increasing trend of Bryde's whale strandings from the 1980s onwards, possibly due to population growth, increased monitoring throughout the Brazilian coast, and/or an increase in anthropogenic threats.
Author Lima, Eduardo Cabral Casado
Author_xml – sequence: 1
  givenname: Eduardo Cabral Casado
  surname: Lima
  fullname: Lima, Eduardo Cabral Casado
BookMark eNotkM1PAjEUxBuDiYicvTbxoB4W2m677R6B-JWQeNHEW9Nt38qSpcV2gfDfu4JzmcNM5r38rtHABw8I3VIy4VLkxXRt42ayZ7ShE6rIBRqynLKMSVIM0JCKgmZE0vwKjVNak16lJFwVQ_Q1wz50gIPHqYvGu8Z_JxxqPI9HB_cJH1amhYQf5qY14MO2g2gwOPDNI2487laAU9h1qwOkPvJ41rXGd429QZe1aROM_32EPp-fPhav2fL95W0xW2aWypJkqsqNtIrWJeeGCC6dKawD64oKjANWEQfKUBCGWCUrKpRlgjJasrISULh8hO7Ou9sYfnb9E3oddtH3JzXLS8YlV4L3rem5ZWNIKUKtt7HZmHjUlOgTQf1HUJ8I6p5g_gufM2cT
ContentType Journal Article
Copyright Copyright International Whaling Commission 2020
Copyright_xml – notice: Copyright International Whaling Commission 2020
DBID AAYXX
CITATION
7TN
F1W
DOI 10.47536/jcrm.v21i1.180
DatabaseName CrossRef
Oceanic Abstracts
ASFA: Aquatic Sciences and Fisheries Abstracts
DatabaseTitle CrossRef
Oceanic Abstracts
ASFA: Aquatic Sciences and Fisheries Abstracts
DatabaseTitleList CrossRef
Oceanic Abstracts
DeliveryMethod fulltext_linktorsrc
Discipline Zoology
EISSN 2312-2706
2312-2692
EndPage 15
ExternalDocumentID 10_47536_jcrm_v21i1_180
GroupedDBID 5GY
AAYXX
ABDBF
ACUHS
ALMA_UNASSIGNED_HOLDINGS
CITATION
EBD
FRJ
GROUPED_DOAJ
OK1
P2P
~02
7TN
F1W
ID FETCH-LOGICAL-c1790-8b3a7c81f944a0547da6cdecd6beade2b0de8a1e5a0c87b158c25121929b5e6d3
ISSN 1561-0713
IngestDate Mon Jun 30 12:03:33 EDT 2025
Sat Nov 29 01:37:31 EST 2025
IsDoiOpenAccess false
IsOpenAccess true
IsPeerReviewed false
IsScholarly true
Issue 1
Language English
License https://creativecommons.org/licenses/by-nc/4.0
LinkModel OpenURL
MergedId FETCHMERGED-LOGICAL-c1790-8b3a7c81f944a0547da6cdecd6beade2b0de8a1e5a0c87b158c25121929b5e6d3
Notes ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
OpenAccessLink https://journal.iwc.int/index.php/jcrm/article/download/180/5
PQID 2392474854
PQPubID 2049023
PageCount 7
ParticipantIDs proquest_journals_2392474854
crossref_primary_10_47536_jcrm_v21i1_180
PublicationCentury 2000
PublicationDate 2020-09-10
PublicationDateYYYYMMDD 2020-09-10
PublicationDate_xml – month: 09
  year: 2020
  text: 2020-09-10
  day: 10
PublicationDecade 2020
PublicationPlace Cambridge
PublicationPlace_xml – name: Cambridge
PublicationTitle The journal of cetacean research and management
PublicationYear 2020
Publisher International Whaling Commission
Publisher_xml – name: International Whaling Commission
SSID ssj0000970486
Score 2.163466
Snippet The aim of the present study is to trace a diagnosis of Bryde´s whale (Balaenoptera edeni) strandings in jurisdictional Brazilian waters through the...
This study analysed 74 records of Bryde's whale strandings in jurisdictional Brazilian waters in order to further understanding of strandings in the region....
SourceID proquest
crossref
SourceType Aggregation Database
Index Database
StartPage 9
SubjectTerms Abundance
Anthropogenic factors
Aquatic mammals
Balaenoptera brydei
Females
Marine mammals
Population growth
Records
Seasonal variations
Seasonality
Sexual maturity
Statistical methods
Stranding
Title A note on strandings of Bryde's whales (Balaenoptera edeni) in the southwestern Atlantic
URI https://www.proquest.com/docview/2392474854
Volume 21
hasFullText 1
inHoldings 1
isFullTextHit
isPrint
journalDatabaseRights – providerCode: PRVAON
  databaseName: DOAJ Directory of Open Access Journals
  customDbUrl:
  eissn: 2312-2706
  dateEnd: 20211231
  omitProxy: false
  ssIdentifier: ssj0000970486
  issn: 1561-0713
  databaseCode: DOA
  dateStart: 20190101
  isFulltext: true
  titleUrlDefault: https://www.doaj.org/
  providerName: Directory of Open Access Journals
link http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwtV3Na9RAFB_WquBF_MRqlTkIVkJqJl8zOW6XiodSPFRYvITJzARTdifLZl0r_vO-N5Ntk4pQD15CmMMjyfvxPibv9xtC3mZRDXU3tKlZEskwFUyGFWSKUGiuDBMmzivn6VN-dibm8-LzZPJrx4XZLri14vKyWP1XV8MaOBups__g7iujsAD34HS4gtvheivHTwPb4r9_izwQT1px4xrH658oscu74Mc3yAput_VYLqSx7QppyIGBENTgLkE_-tjh6Xq9kkIw3SzAB40aFrMIsYHyhDIbqXBjvxcQ8py55R_zNafN0lWsJxrh2QYzWaFKwEx2UrfDXQhoOfEUhWgYOHOGZCgfrIxbg9IRqT9RPoy2ng89QpUPncUgB3uG583onkJrhTsNF2q9PNrGrGFHzB8DNdbRvpHfrqYOod9xJko0UDoDJRi4Q-7GPCuKQT_u0njBUY7Q6e327-aloZyND-OHGFc146TuKpXzR-Rh32LQqYfGYzIx9gm5_7V1P1CekvmUIkBoa-k1QGhbUweQdx318KCHQ3BQB473tLEUoEGH0KA7aDwjXz6enM8-hf35GqFCXbZQVInkSrC6SFMJpTvXMlfaKJ1XOEYfV5E2QjKTyUgJXrFMKKyGoScoqszkOnlO9mxrzQtC46hOCkgXuVRZmptM6Dg2MmYMDNRCJfvkcPd9ypWXUSn_4o59crD7fmWP4a6MoYxPeSqy9OXtLb0iD66hekD2Nuvv5jW5p7abplu_cd7-DZ4_dcU
linkProvider Directory of Open Access Journals
openUrl ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=A+note+on+strandings+of+Bryde%27s+whales+%28Balaenoptera+edeni%29+in+the+southwestern+Atlantic&rft.jtitle=The+journal+of+cetacean+research+and+management&rft.au=Lima%2C+Eduardo+Cabral+Casado&rft.date=2020-09-10&rft.issn=1561-0713&rft.eissn=2312-2706&rft.volume=21&rft.issue=1&rft.spage=9&rft.epage=15&rft_id=info:doi/10.47536%2Fjcrm.v21i1.180&rft.externalDBID=n%2Fa&rft.externalDocID=10_47536_jcrm_v21i1_180
thumbnail_l http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=1561-0713&client=summon
thumbnail_m http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=1561-0713&client=summon
thumbnail_s http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=1561-0713&client=summon