Marine Mammal Science最新文献

{"title":"Nomenclature of the Larger Toothed Whales (Odontocetes): A Historical Review , Thomas A. Jefferson, James G. Mead, and Carl C. Kinze, Eds. Smithsonian Scholarly Press. 2023. 78 pp. ISBN: 1943–6696. https://doi.org/10.5479/si.21954029","authors":"Ana P. B. Costa","doi":"10.1111/mms.13096","DOIUrl":"10.1111/mms.13096","url":null,"abstract":"","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138953888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Occurrence and habitat use of pantropical spotted dolphins (Stenella attenuata) at the edge of their distribution in the southwestern Atlantic Ocean","authors":"Thayusky P. Correa, Leonardo L. Wedekin, Marta J. Cremer","doi":"10.1111/mms.13094","DOIUrl":"10.1111/mms.13094","url":null,"abstract":"","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138966828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abrupt change in humpback whale song from Brazil suggests cultural revolutions may occur in the South Atlantic","authors":"Maria Isabel C. Gonçalves, Divna Djokic, Julio E. Baumgarten, Milton C. C. Marcondes, Linilson R. Padovese, Leonardo D. S. Eugenio, Renata S. Sousa-Lima","doi":"10.1111/mms.13093","DOIUrl":"10.1111/mms.13093","url":null,"abstract":"","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139196782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photo-identification and satellite telemetry connect southern right whales from South Georgia Island (Islas Georgias del Sur) with multiple feeding and calving grounds in the southwest Atlantic","authors":"Amy S. Kennedy,&nbsp;Emma L. Carroll,&nbsp;Alexandre N. Zerbini,&nbsp;C. Scott Baker,&nbsp;Manuela Bassoi,&nbsp;Nazarena A. Beretta,&nbsp;Danielle L. Buss,&nbsp;Susannah Calderan,&nbsp;Ted Cheeseman,&nbsp;Martin A. Collins,&nbsp;Paula Costa-Urrutia,&nbsp;Paul Ensor,&nbsp;Karina Groch,&nbsp;Russell Leaper,&nbsp;Paula Olson,&nbsp;Cecilia Passadore,&nbsp;Federico G. Riet-Sapriza,&nbsp;Els Vermeulen,&nbsp;Florencia Vilches,&nbsp;Andrew G. Wood,&nbsp;Jennifer A. Jackson","doi":"10.1111/mms.13089","DOIUrl":"10.1111/mms.13089","url":null,"abstract":"<p>The sub-Antarctic waters of South Georgia Island (Islas Georgias del Sur, SG/IG) are a regularly visited feeding ground for southern right whales (<i>Eubalaena australis</i>, SRW) in the southwest Atlantic. Satellite telemetry and photo-identification records were compared to better understand the role of SG/IG in the SRW migratory network. We present the first insights from SRW satellite-tracked from the SG/IG feeding ground, habitat use patterns in the Scotia Arc, and movements to Antarctic habitats. Photo-identification comparisons to calving and feeding areas across the South Atlantic and a review of sightings of cetaceans reported from Bird Island (west of SG/IG) since 1979 illuminate long-term habitat use patterns in SG/IG. We present the first recorded migratory movement between SG/IG and multiple countries: Argentina, Uruguay, and Brazil. Photo-identification (1) linked SG/IG to a female SRW with a long-term sighting history in Brazil, and (2) provided the first match between SG/IG and the western Antarctic Peninsula, suggesting the latter could extend the feeding area for southwest Atlantic SRW. Satellite tracking and opportunistic sightings suggest that shelf and coastal waters west of SG/IG represent an important multi-season SRW feeding habitat and add to our overall understanding of habitats and ranges occupied by recovering southwest Atlantic SRW.</p>","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/mms.13089","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138508223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal abundance estimates of cetaceans in the southern Black Sea (Sinop), Türkiye","authors":"Uğur Özsandıkçı,&nbsp;Süleyman Özdemir","doi":"10.1111/mms.13092","DOIUrl":"10.1111/mms.13092","url":null,"abstract":"<p>The availability of reliable information on the abundance and distribution of threatened species is fundamental to evaluating their conservation status and taking the necessary measures to implement effective management. The seasonal abundance and distribution of cetaceans in the Sinop region, one of the essential fishing areas of the Black Sea, were estimated with line-transect data. Dedicated boat-based visual observations were conducted in four seasons between May 2019 and March 2020. Average estimates of abundance in the region over all seasons were 1,058 individuals for Black Sea harbor porpoises (<i>Phocoena phocoena relicta</i>; <i>CV</i> = 19.25%, 95% CI[725, 1,542]), 188 individuals for Black Sea bottlenose dolphins (<i>Tursiops truncatus ponticus</i>; <i>CV</i> = 21.67%, 95% CI[123, 289]), and 311 individuals for Black Sea common dolphin (<i>Delphinus delphis ponticus</i>; <i>CV</i> = 16.77%, 95% CI[123, 427]). The highest estimates for all three species were obtained in the spring. Harbor porpoises and bottlenose dolphins were present in the study area throughout the year, while common dolphins left the region in winter. These findings offer valuable insights that can guide and inform future conservation strategies, aligning with national and international frameworks for the protection of these cetacean species.</p>","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/mms.13092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138508241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First direct observation of a successful southern right whale (Eubalaena australis) birth in South African coastal waters","authors":"Loraine Shuttleworth,&nbsp;Ash Appleby,&nbsp;Robin Appleby,&nbsp;Els Vermeulen","doi":"10.1111/mms.13091","DOIUrl":"10.1111/mms.13091","url":null,"abstract":"<p>Southern right whale females (<i>Eubalaena australis</i>, hereafter SRWs) usually migrate between higher latitudes where they forage in summer to coastal areas at lower latitudes where they give birth and nurse their young in winter (Best, <span>2000</span>). In South Africa, the SRW calving season extends between late June to late October, with a birthing peak in August (Best, <span>1994</span>). This predictable coastal presence has enabled population monitoring since the late 1960s by means of annual aerial surveys (e.g., Best, <span>1990</span>; Best et al., <span>2001</span>). In addition to monitoring population recovery postwhaling, these long-term surveys have also allowed for the observational assessment of reproductive parameters. As such, the age at first parturition in the population was estimated at 8 years with an average calving interval of 3 years and an estimated gestation length of 12–13 months (Best, <span>1994</span>; Best et al., <span>2001</span>). However, despite these long-term research efforts, very little is known regarding the actual birthing event in SRWs (Best, <span>1994</span>). Three accounts of possible SRW births off the coast of South Africa have briefly been discussed in Best (<span>1970</span>) and Best (<span>1981</span>) but they all relate to anecdotal evidence from distant shore-based observations.</p><p>Documentation of SRW births is equally rare across calving grounds throughout the southern hemisphere. In 2012, an unsuccessful birth was documented in Argentina (Península Valdés) from a whale watching vessel and reported in Sironi et al. (<span>2019</span>). The authors suggested that there were a few possible factors indicating that this was an abnormal parturition including the repeated protrusion and withdrawal of the calf, lengthy time-period before full expulsion of the calf, and resighting of the female without a calf (Sironi et al., <span>2019</span>). However, despite the increasing boat-based presence around SRWs, mostly in the form of whale-based tourism, close and detailed observation of a successful birth has, to our knowledge, never been directly observed and documented. Therefore, here we report the first documented successful SRW birth observed along the South African coast, supplemented with photographic evidence.</p><p>In early July 2022, the commercial whale-watching boat <i>Miroshca</i> (length: 18 m; engine specifications: two John Deere 9 L inboard engines) of the whale-watching company Southern Right Charters encountered a lone SRW in Walker Bay, Hermanus, South Africa. For three to four consecutive days, what appeared to be the same animal was observed in approximately the same location (near 34°26.57′S, 19°15.40′E) performing short but steep fluking dives. As this type of behavior is typically enjoyed by tourists and rare to see repetitively, the vessel deliberately headed to the same coordinates during each trip considering the high likelihood of such an exciting encounter. B","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/mms.13091","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134953658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Raise your pitch! Changes in the acoustic emissions of resident bottlenose dolphins in the proximity of vessels","authors":"Filipa V. Sobreira,&nbsp;Ana R. Luís,&nbsp;Inês S. Alves,&nbsp;Miguel N. Couchinho,&nbsp;Manuel E. dos Santos","doi":"10.1111/mms.13090","DOIUrl":"10.1111/mms.13090","url":null,"abstract":"<p>Maritime traffic is a major contributor of anthropogenic disturbance for cetaceans, especially for coastal populations, such as that of resident common bottlenose dolphins (<i>Tursiops truncatus</i>) in the Sado estuary (Portugal). Animals have been found to adjust their vocal behavior by changing vocal rates, or call frequency and/or duration, to overcome masking effects of underwater noise. To evaluate the potential impacts of boat traffic on the acoustic behavior of these dolphins, emission rates and acoustic characteristics of whistles and burst-pulsed signals were analyzed with and without boats operating nearby. In this study, no significant differences were found for emission rates of each type of vocal element in the presence of vessels. However, significant differences were found in acoustic parameters, namely changes in frequency and duration, for whistles and for pulsed sounds (creaks, grunts, squeaks, and gulps). These changes, such as a shift in vocal frequencies and production of shorter signals, may represent behavioral strategies to compensate for the noisy environment. Although resident bottlenose dolphins in the Sado region seem to have developed some tolerance to vessel noise, continuous noise exposure and noise-induced frequency shifts in vocal outputs could have indirect fitness costs for this population.</p>","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134954664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Species classification of Antarctic pack-ice seals using very high-resolution imagery","authors":"Michael Wethington,&nbsp;Bento C. Gonçalves,&nbsp;Emma Talis,&nbsp;Bilgecan Şen,&nbsp;Heather J. Lynch","doi":"10.1111/mms.13088","DOIUrl":"10.1111/mms.13088","url":null,"abstract":"<p>We introduce a semiautomated machine learning method that employs high-resolution imagery for the species-level classification of Antarctic pack-ice seals. By incorporating the spatial distribution of hauled-out seals on ice into our analytical framework, we significantly enhance the accuracy of species identification. Employing a Random Forest model, we achieved 97.4% accuracy for crabeater seals and 98.0% for Weddell seals. To further refine our classification, we included three linearity measures: mean distance to a group's regression line, straightness index, and sinuosity index. Additional variables, such as the number of neighboring seals within a 250 m radius and distance of individual seals to the sea ice edge, also contributed to improved accuracy. Our study marks a significant advancement in the development of a cost-effective, unified Antarctic seal monitoring system, enhancing our understanding of seal spatial behavior and enabling more effective population tracking amid environmental changes.</p>","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134954115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First identification of stereotyped whistle contour types by Pseudorca crassidens","authors":"Raul Rio,&nbsp;Hiram Rosales-Nanduca","doi":"10.1111/mms.13087","DOIUrl":"10.1111/mms.13087","url":null,"abstract":"","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135391801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stomach contents analysis of Tursiops aduncus and Sousa plumbea stranded along the United Arab Emirates coastline","authors":"Razan Alkhamis,&nbsp;Malcolm J. Smale,&nbsp;Mark J. Beech,&nbsp;Robert L. Brownell Jr.,&nbsp;Henrik Stahl,&nbsp;Ada Natoli","doi":"10.1111/mms.13086","DOIUrl":"10.1111/mms.13086","url":null,"abstract":"","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135390890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}