Scott F. Pearson, Staci M. Amburgey, Casey T. Clark, Sarah A. Tanedo, Josh M. London, Harriet R. Huber, Steven J. Jeffries
{"title":"Trends and status of harbor seals in Washington State, USA (1977–2023)","authors":"Scott F. Pearson, Staci M. Amburgey, Casey T. Clark, Sarah A. Tanedo, Josh M. London, Harriet R. Huber, Steven J. Jeffries","doi":"10.1111/mms.13161","DOIUrl":"https://doi.org/10.1111/mms.13161","url":null,"abstract":"Harbor seal (<jats:italic>Phoca vitulina</jats:italic>) numbers in the United States rebounded after the implementation of conservation measures associated with the Marine Mammal Protection Act of 1972 (MMPA). Stock estimates are a critical tool for assessing species status and management options under the MMPA and for modeling efforts designed to evaluate the role of pinnipeds in marine ecosystems. We conducted aerial surveys of harbor seal haul‐out sites between 1977 and 2023 to estimate population size and trends in four Washington State, USA, stocks: (1) Hood Canal, (2) Southern Puget Sound, (3) Washington Northern Inland Waters, and (4) the Washington portion of the Oregon‐Washington Coastal Stock. We fit a Bayesian state‐space model to estimate population trends for all stocks, as well as the Washington Coast region, and present carrying capacities and maximum net productivity levels for all stocks. The most recent population estimates for the three inland water stocks are within their optimal sustainable population range, with some evidence that the Southern Puget Sound Stock is continuing to grow.","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141886961","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}
Renan C. de Lima, Sérgio C. Estima, Maurício Tavares, Paula L. Canabarro, Silvina Botta, Liane A. Dias, Andrine P. da Silva, Derek B. de Amorim, Larissa R. de Oliveira
{"title":"Impacts and lessons learned from the first highly pathogenic avian influenza (H5N1) outbreak in South American pinnipeds along the southern Brazilian coast","authors":"Renan C. de Lima, Sérgio C. Estima, Maurício Tavares, Paula L. Canabarro, Silvina Botta, Liane A. Dias, Andrine P. da Silva, Derek B. de Amorim, Larissa R. de Oliveira","doi":"10.1111/mms.13163","DOIUrl":"https://doi.org/10.1111/mms.13163","url":null,"abstract":"","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863989","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}
Tyler R. Bonnell, Robert Michaud, Angélique Dupuch, Véronique Lesage, Clément Chion
{"title":"Estimating spatial mixing within the St. Lawrence Estuary beluga population by comparing local individual diversity and abundance","authors":"Tyler R. Bonnell, Robert Michaud, Angélique Dupuch, Véronique Lesage, Clément Chion","doi":"10.1111/mms.13162","DOIUrl":"10.1111/mms.13162","url":null,"abstract":"<p>Interindividual variability in habitat preferences affect local abundance and residency times. Within a population range, this can lead to sectors having a continuous flow of unique individuals, with others being used by the same set of resident individuals. These patterns of habitat use by individuals, referred to here as individual spatial mixing, can have important implications for ecological and evolutionary processes. This study proposes a novel approach for estimating the degree of individual spatial mixing in an endangered beluga population, based on the comparison of local individual diversity obtained from photo-identification data against abundance indices derived from systematic aerial surveys. Divergences between long-term indices of abundance and diversity were observed across many sectors within the population's summer habitat. This was the case notably for the Saguenay Fjord, where on average only 1.8% of the total population count was detected during summer aerial surveys, but where 41% of all individuals identified in the photo-identification data were found at least once. The comparative approach proposed in this study to estimate individual spatial mixing can help quantify site fidelity patterns in wildlife populations and estimate its vulnerability to local stressors such as anthropogenic noise.</p>","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/mms.13162","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863990","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}
Michael R. McGowen, Susana Caballero, Mary Faith C. Flores, Katherine R. Murphy, Frederick I. Archer, Sam Ayyagari, Isabel Beasley, C. Sarah Cohen, M. Louella L. Dolar, Chalatip Junchompoo, Patcharaporn Kaewmong, Worata Klinsawat, Danielle Kreb, Sui Hyang Kuit, Kelly Robertson, Richard Sabin, Watchara Sakornwimon, Kerri J. Smith, Zhi Yi Teoh, Trifan Budi, Louisa S. Ponnampalam, Ellen Hines
{"title":"Range-wide phylogeographic structure of the endangered Irrawaddy dolphin (Orcaella brevirostris) using expanded sampling from contemporary and historical specimens","authors":"Michael R. McGowen, Susana Caballero, Mary Faith C. Flores, Katherine R. Murphy, Frederick I. Archer, Sam Ayyagari, Isabel Beasley, C. Sarah Cohen, M. Louella L. Dolar, Chalatip Junchompoo, Patcharaporn Kaewmong, Worata Klinsawat, Danielle Kreb, Sui Hyang Kuit, Kelly Robertson, Richard Sabin, Watchara Sakornwimon, Kerri J. Smith, Zhi Yi Teoh, Trifan Budi, Louisa S. Ponnampalam, Ellen Hines","doi":"10.1111/mms.13159","DOIUrl":"10.1111/mms.13159","url":null,"abstract":"<p>The Irrawaddy dolphin (<i>Orcaella brevirostris</i>) is an endangered cetacean that ranges throughout much of Southeast Asia and lives in coastal, estuarine, and riverine habitats including three river systems: Ayeyarwady, Mekong, and Mahakam. Many populations face risks from human interference, but overall rangewide diversity and connectivity is not well-understood. Here we sequenced 77 complete mitogenomes from across the range of the Irrawaddy dolphin including all obligate riverine populations; eighteen of these were sequenced from historical museum specimens. Phylogenetic analysis showed haplotypes from each riverine population formed separate clades nested within the wider species implying each river system was separately invaded only once. All Irrawaddy dolphin mitogenomes were dated to a last common ancestor ~764 kya. Most lineages appeared after inundation cycles of the Sunda Shelf were initiated ~400 kya. Despite the lack of monophyly among many haplotypes from the same population, no population shared any haplotypes. Rangewide nucleotide diversity was average compared to other odontocetes, but riverine populations were especially low. Differentiation was significant among all populations analyzed with the most divergence occurring between isolated riverine populations. These analyses add more evidence for the necessity of conservation efforts directed towards riverine and other isolated populations of the Irrawaddy dolphin.</p>","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/mms.13159","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141864005","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}
Alice Lima, Lara Cunha Lopes, Jéssica Fernandes de Melo, Evelyn Fróes, Rita de Cassia De Carli, Manuela Bassoi, Renata S. Sousa‐Lima, Manuel E. dos Santos, Maria Isabel Carvalho Gonçalves
{"title":"Bray calls emitted by common bottlenose dolphins (Tursiops truncatus) in offshore waters of northeastern Brazil","authors":"Alice Lima, Lara Cunha Lopes, Jéssica Fernandes de Melo, Evelyn Fróes, Rita de Cassia De Carli, Manuela Bassoi, Renata S. Sousa‐Lima, Manuel E. dos Santos, Maria Isabel Carvalho Gonçalves","doi":"10.1111/mms.13160","DOIUrl":"https://doi.org/10.1111/mms.13160","url":null,"abstract":"","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141778724","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}
Tiffany Zorotrian, Adam W. Stern, Alexander Costidis, Craig A. Harms, Hanzhi Gao, Christine Fontaine, Hayley R. Adams
{"title":"Delphinid postmortem vitreous humor biochemistry as proxy for antemortem blood analyte concentrations","authors":"Tiffany Zorotrian, Adam W. Stern, Alexander Costidis, Craig A. Harms, Hanzhi Gao, Christine Fontaine, Hayley R. Adams","doi":"10.1111/mms.13157","DOIUrl":"https://doi.org/10.1111/mms.13157","url":null,"abstract":"","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141614712","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":"ZMFISC: Zhu‐Ming data set with a convolutional neural network for identifying Indo‐Pacific humpback dolphins (Sousa chinensis)","authors":"Minghao Yang, Zhongrui Wu, Xiqing Zang, Changlong Jin, Qian Zhu","doi":"10.1111/mms.13154","DOIUrl":"https://doi.org/10.1111/mms.13154","url":null,"abstract":"The Indo‐Pacific humpback dolphin (<jats:italic>Sousa chinensis</jats:italic>) is a small‐toothed whale species that inhabits estuaries and shallow coastal waters from the eastern Indian Ocean to the western Pacific, and faces significant negative impacts from anthropogenic activities. The noninvasive Photo‐identification method enables individual identification and abundance estimation based on natural markings of cetaceans without disrupting their natural behaviors. Currently, the identification of <jats:italic>S. chinensis</jats:italic> using photographs relies primarily on time‐intensive visual recognition by experienced researchers. Through field surveys conducted in the west Huangmao Sea area from 2012 to 2021, we compiled the Zhu‐Ming data set focusing on <jats:italic>S. chinensis</jats:italic> (ZMSC), consisting of 479 individuals and 5,196 photos. Utilizing the ZMSC, we proposed a Few‐Shot Identification method for <jats:italic>S. chinensis</jats:italic> (FISC), which achieved 85.93% identification Top‐1 accuracy. The implementation of proper preprocessing steps and data augmentation techniques has significantly enhanced the performance of FISC, while visualizing network weights has improved its interpretability. Despite the remaining challenges of data imbalance and the inability to automatically allocate new labels, ZMFISC alleviates the challenge of the current heavy reliance on time‐intensive visual recognition methods by researchers for individual identification of <jats:italic>S. chinensis</jats:italic> and provide a valuable tool to enhance future conservation efforts for <jats:italic>S. chinensis</jats:italic>.","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609591","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}
Bram Feij, Susanne Kühn, André Meijboom, Jan A. van Franeker, Horst Bornemann, Nat Kelly, Fokje L. Schaafsma
{"title":"Distribution of Arnoux's beaked whales (Berardius arnuxii)","authors":"Bram Feij, Susanne Kühn, André Meijboom, Jan A. van Franeker, Horst Bornemann, Nat Kelly, Fokje L. Schaafsma","doi":"10.1111/mms.13158","DOIUrl":"https://doi.org/10.1111/mms.13158","url":null,"abstract":"Arnoux's beaked whales (<jats:italic>Berardius arnuxii</jats:italic>) are generally considered to be uncommon to rare, and likely to prefer deep oceanic waters of the Southern Hemisphere. During many top‐predator surveys in the Southern Ocean since 1988 we did not sight the species. However, in April 2022 we encountered three groups in the marginal sea‐ice zone of the Weddell Sea. This study provides detailed descriptions of the sighted animals and their environment and report on unpublished sightings of this species from 1986 to 1998. A search of published information on the distribution of the species revealed 108 documented sightings with a total of 1,125 individuals. In combination these sources of information for the Southern Ocean, suggest a frequent occurrence in ice‐covered waters, often close to the continental coast and edges of fast ice and ice‐shelves. North of 60°S, in the temperate regions of the Southern Hemisphere, the species was also regularly sighted near continents, even far inshore, in fjords surrounded by land.","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609592","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}
Jamie L. Brusa, Scott F. Pearson, Martin G. Raphael, Beth Gardner
{"title":"Biotic and abiotic drivers of harbor seal (Phoca vitulina) fine‐scale densities in the Salish Sea","authors":"Jamie L. Brusa, Scott F. Pearson, Martin G. Raphael, Beth Gardner","doi":"10.1111/mms.13155","DOIUrl":"https://doi.org/10.1111/mms.13155","url":null,"abstract":"Understanding relationships between environmental characteristics and variation in species occurrence and density can provide information for managing human activities, protected species, and species of commercial importance in a dynamic system. To identify environmental drivers associated with variation in harbor seal (<jats:italic>Phoca vitulina</jats:italic>) densities in the Salish Sea, Washington, we analyzed 20 years of boat‐based survey data and environmental covariates using a hierarchical distance sampling model. We included spatial, temporal, and spatiotemporal environmental covariates in our model and produced fine‐scale predictive maps displaying in‐water estimated densities from our model results. We found that spatial covariates were the strongest predictors for harbor seal densities in the Salish Sea. Harbor seals were more abundant closer to major river mouths, near shore, in shallower waters, and in areas with more haul‐out sites. Additionally, harbor seal density varied with shoreline type. Changes in predicted harbor seal spatial use of the Salish Sea varied but with little difference between breeding/molting and nonbreeding/nonmolting seasons. Our results revealed spatiotemporal variation in harbor seal fine‐scale density in the Salish Sea, which are particularly important for conservation planning, as spatiotemporal variation in harbor seal density can exert heterogenous top‐down effects on prey species populations, some of which are threatened.","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141573719","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}
Dory Y. Yang, K. Alex Shorter, Michael Moore, Julie Rocho‐Levine, Randall S. Wells, Kira Barton, Mark Johnson
{"title":"In vivo viscoelastic properties of cetacean integument: an experimental characterization","authors":"Dory Y. Yang, K. Alex Shorter, Michael Moore, Julie Rocho‐Levine, Randall S. Wells, Kira Barton, Mark Johnson","doi":"10.1111/mms.13153","DOIUrl":"https://doi.org/10.1111/mms.13153","url":null,"abstract":"Suction cups are commonly used to attach biologging tags to cetaceans, and interact mechanically with compliant integument, an organ primarily composed of skin and blubber. However, the impact of compliance on suction cup performance is difficult to predict because knowledge about in vivo integument mechanics is lacking. Here, an experimental approach is used to investigate the mechanical properties of common bottlenose dolphin (<jats:italic>Tursiops truncatus</jats:italic>) integument using a custom instrument, the static suction cup (SSCup), to collect data from both trained dolphins and wild individuals (<jats:italic>n</jats:italic> = 17) during a static pose. Three loading profiles were applied at three sites to quantify nonlinear stiffness, hysteresis, and creep. The site at the dorsal fin insertion exhibited the highest stiffness, while sites posterior to the blowhole and above the pectoral fin showed greater energy dissipation during cyclic loading. Viscoelastic behavior was observed across all sites. Suction cup performance on a surrogate material with broadly similar compliance showed reduced performance compared to cups on rigid acrylic: the maximum applied force at detachment on acrylic (50 N) was twice as large as the compliant substrate (25 N). Site‐dependent compliance of integument may lead to varying performance of suction cups as an attachment method for tags.","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141573721","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}