{"title":"The Little Book of WhalesBy Robert Young and Annalisa Berta, Princeton, New Jersey: Princeton University Press, 2024. 160 pp. US$ 15.95 (hardcover); US$ 11.17 (eBook). ISBN: 978-0-69-126012-9","authors":"Geraldine Busquets-Vass","doi":"10.1111/mms.70015","DOIUrl":"https://doi.org/10.1111/mms.70015","url":null,"abstract":"","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":"41 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749919","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}
Bingyao Chen, Fangting Lu, Xuelei Zhang, Caiwen Wu, Liangang Lü, Thomas A. Jefferson
{"title":"The largest known population of Eden's whale aggregates in the Beibu Gulf, southern China","authors":"Bingyao Chen, Fangting Lu, Xuelei Zhang, Caiwen Wu, Liangang Lü, Thomas A. Jefferson","doi":"10.1111/mms.13226","DOIUrl":"https://doi.org/10.1111/mms.13226","url":null,"abstract":"<p>Basic information on the distribution, survival, and abundance of Eden's whale (<i>Balaenoptera edeni edeni</i>) is lacking. During April 2018 to April 2024, we monitored Eden's whales in the Beibu Gulf, southern China. Using characteristics of the dorsal fin left and right side, 83 and 88 whales were identified, respectively (mean 3.5 times). The POPAN and Cormack–Jolly–Seber (CJS) open models in MARK resulted in low apparent survival of .824 and .817 for left dorsal fin data set, .816 and .822 for right dorsal fin data set and lower capture probability of .522 and .427 for left, .468 and .461 for right. The POPAN model estimated 82–123 identifiable whales and 100–160 whales adjusted by mark ratio, indicating the largest reported population worldwide. The mean annual population size ranged from 26 to 58, with a yearly increasing–decreasing fluctuation. The low survival, capture probability, and annual population size, and increasing discovery curve indicate that the population dynamics are complex, possibly reflecting wider movement beyond the study area. We speculate that some individuals were residents in the Beibu Gulf, while most whales were transients that migrate yearly between the Beibu Gulf and the East China Sea, South China Sea, or/and Southeast Asia.</p>","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":"41 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749945","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}
Martine Bérubé, Phil Clapham, Greg Donovan, Philip S. Hammond, Lotte Kindt-Larsen, Anthony R. Martin, David K. Mattila, Per J. Palsbøll, Randall R. Reeves, Jooke Robbins, Richard Sears, Nils Øien
{"title":"In memoriam Finn Larsen 1953–2024","authors":"Martine Bérubé, Phil Clapham, Greg Donovan, Philip S. Hammond, Lotte Kindt-Larsen, Anthony R. Martin, David K. Mattila, Per J. Palsbøll, Randall R. Reeves, Jooke Robbins, Richard Sears, Nils Øien","doi":"10.1111/mms.13227","DOIUrl":"https://doi.org/10.1111/mms.13227","url":null,"abstract":"","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":"41 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749939","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":"Stable isotope values from organisms in the North Pacific Ocean: A reference for trophic ecology studies","authors":"Kelly R. Bowen, Carolyn M. Kurle","doi":"10.1111/mms.13221","DOIUrl":"https://doi.org/10.1111/mms.13221","url":null,"abstract":"<p>Trophic ecology research provides insight into ecosystem form and function through an understanding of predator–prey dynamics (Boecklen et al., <span>2011</span>). Analyses of the stable carbon (<sup>13</sup>C/<sup>12</sup>C; <i>δ</i><sup>13</sup>C) and nitrogen (<sup>15</sup>N/<sup>14</sup>N; <i>δ</i><sup>15</sup>N) isotope values from predator and prey tissues are a useful method by which to study foraging relationships. Stable isotope values increase with each trophic level due to consumer metabolism and the differential assimilation of heavier and lighter isotopes from prey into predator tissues (DeNiro & Epstein, <span>1978</span>; Deniro & Epstein, <span>1981</span>; Hobson, <span>1999</span>). The differences in the stable isotope values between prey and predator tissues due to fractionation can be predictable and is measured as the trophic discrimination factor (TDF). TDFs are dependent upon several variables, including taxonomy (e.g., fish or mammal, etc.), consumer type (e.g., carnivore or herbivore), consumer sex (e.g., male or female), diet source (e.g., marine or terrestrial), and tissue type (e.g., blood or skin, etc.; Kurle, <span>2009</span>; Kurle et al., <span>2014</span>; Stephens et al., <span>2023</span>).</p><p>Although TDFs would ideally be specific to the system being studied, controlled feeding experiments over months to identify TDFs are often prohibitively difficult. Generalized TDFs have been recognized (+1‰ for the <i>δ</i><sup>13</sup>C values and + 3.4‰ for the <i>δ</i><sup>15</sup>N values; Post, <span>2002</span>) as a substitute when experimentally-derived TDFs are unavailable, but, when possible, it remains important to compare similar predator and prey tissues to control for the tissue-dependency of TDFs. Stable isotope values can be measured for soft tissues such as skin, blubber, and muscle, as well as hard tissues such as dentin and bone. The isotopic turnover, the rate at which stable isotopes in a tissue are replaced with those metabolized from the diet, varies by tissue type (Kurle, <span>2009</span>). Blood has a relatively high turnover rate of weeks compared with the slow turnover rate of bone over years (Aurioles-Gamboa et al., <span>2013</span>; Buchheister & Latour, <span>2010</span>; Riofrío-Lazo & Aurioles-Gamboa, <span>2013</span>). Therefore, similar tissues should be compared between predator and prey when possible.</p><p>Despite the challenges in standardizing isotope values and TDFs across taxa and tissue types, stable isotope analyses have been used to study trophic ecology at multiple temporal and spatial scales in the Pacific Ocean (among other marine and terrestrial environments). For example, Misarti et al. (<span>2009</span>) examined stable isotope values of bone collagen from fish and marine mammals in the Pacific Ocean over 4500 years, and Arnoldi et al. (<span>2023</span>) investigated stable isotope values from invertebrates and fish across the majority of the No","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":"41 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/mms.13221","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749815","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":"Validation and application of stable isotope analysis of dugong tusks to determine long-term shifts in foraging patterns","authors":"Janet M. Lanyon, Lilly C. Dawson, Kim Baublys","doi":"10.1111/mms.13202","DOIUrl":"https://doi.org/10.1111/mms.13202","url":null,"abstract":"<p>Understanding the capacity of animals to shift diet in times of food shortage is crucial in assessing their resilience to climate change. Dugongs are specialist herbivores that live in genetically discrete populations and forage locally. This study validated the use of stable isotope analysis of collagen from the permanent, continuously growing tusks of dugongs to assess potential trophic and/or spatial shifts in foraging. Tusks were accessed from museum collections and included five locations spanning the dugong's Australian subtropical to tropical distribution. Collagen from tusk growth layers deposited during three life stages (nursing calf, subadult, and adult) and two seasons (winter, summer) were analyzed for δ<sup>15</sup>N and δ<sup>13</sup>C. In tropical Australia, mean δ<sup>15</sup>N values decreased significantly from calves to adults reflecting the ontogenetic dietary shift from milk to seagrass. In contrast, δ<sup>15</sup>N was significantly enriched in adult dugongs in subtropical Moreton Bay suggesting omnivory. δ<sup>13</sup>C values in tusks did not change with geographic location. Season did not appear to have a significant impact on δ<sup>15</sup>N or δ<sup>13</sup>C values in either tropical or subtropical locations, but dietary variation was greatest in the subtropics. Stable isotope analysis of tusks appears to be a useful method of investigating dietary/trophic shifts over a dugong's lifetime.</p>","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":"41 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749400","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}
Kate M. Colson, Enrico Pirotta, Leslie New, David E. Cade, John Calambokidis, K. C. Bierlich, Clara N. Bird, Alejandro Fernandez Ajó, Lisa Hildebrand, Andrew W. Trites, Leigh G. Torres
{"title":"Using accelerometry tags to quantify gray whale foraging behavior","authors":"Kate M. Colson, Enrico Pirotta, Leslie New, David E. Cade, John Calambokidis, K. C. Bierlich, Clara N. Bird, Alejandro Fernandez Ajó, Lisa Hildebrand, Andrew W. Trites, Leigh G. Torres","doi":"10.1111/mms.13210","DOIUrl":"https://doi.org/10.1111/mms.13210","url":null,"abstract":"<p>High-resolution tri-axial accelerometry biologging tags have quantitatively described behaviors in baleen whale species that forage using lunges and continuous ram filtration. However, detailed quantitative descriptions of foraging behaviors do not exist for gray whales, a unique baleen whale species that primarily uses benthic suction feeding with a rolling component. We deployed suction cup biologging tags on Pacific Coast Feeding Group (PCFG) gray whales to quantify foraging behavior at the broad state (dive) and foraging tactic (roll event) scales. Hidden Markov models were used to describe three distinct states using turn angle, dive duration, pseudotrack tortuosity, and presence of roll events that can be interpreted as forage, search, and transit behavior. Classification and Regression Tree models best described foraging tactics (headstands, benthic digs, and side swims) using median pitch, depth to total length ratio, and absolute value of the median roll. On average, PCFG gray whales spent more time searching and performed more left-rolled foraging tactics at shallower depths at night compared to during the day, potentially to track prey above them in the water column. Describing foraging behavior in PCFG gray whales enables examination of links between behavioral budgets, energetics, and the physiological impact of threats facing this group.</p>","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":"41 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/mms.13210","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750017","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}
Jasper de Bie, Serena B. Lee, Jan-Olaf Meynecke, Elisa Seyboth, Saumik Samanta, Marcello Vichi, Alakendra Roychoudhury, Brendan Mackey
{"title":"Agent-based modelling of southward coastal migration by humpback whale mother–calf pods off eastern Australia","authors":"Jasper de Bie, Serena B. Lee, Jan-Olaf Meynecke, Elisa Seyboth, Saumik Samanta, Marcello Vichi, Alakendra Roychoudhury, Brendan Mackey","doi":"10.1111/mms.13203","DOIUrl":"https://doi.org/10.1111/mms.13203","url":null,"abstract":"<p>Humpback whales <i>Megaptera novaeangliae</i> encounter a variety of environmental conditions during seasonal migration between feeding grounds and breeding grounds. Relationships between environmental conditions and migratory movements are largely unknown due to a lack of oceanographic data coincident with their presence/absence. We begin to address this knowledge gap by developing a new agent-based modelling (ABM) approach designed to predict southward migration of mother–calf (MC) pairs along a stretch of the east Australian coast between the Great Barrier Reef (GBR) and Gold Coast (GC) bay, which includes a known resting area, Hervey Bay (HB). To assess our ability to reproduce observed migration patterns, numerical experiments were undertaken in which static (bathymetry) and dynamic (currents, sea surface temperature) variables between August and October 2017 governed movements. These experiments revealed how bathymetry influences HB usage, and a necessity to apply different directionality preferences to whales before and after negotiating HB, which appear to closely align with coastline orientation. The ABM provides a novel, suitable framework for simulating MC humpback whale migration, and an important first step in the development of predictive models of humpback whale behavior. Developing such tools is increasingly necessary to predict how changing ocean conditions are likely to affect their distribution.</p>","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":"41 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/mms.13203","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749906","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}
Giulia Bellon, Anna Selbmann, Paul Wensveen, Marianne Rasmussen, Amelie Laute, Xavier Mouy, Filipa I. P. Samarra
{"title":"Killer whale (Orcinus orca) occurrence in Icelandic waters revealed by passive acoustic monitoring","authors":"Giulia Bellon, Anna Selbmann, Paul Wensveen, Marianne Rasmussen, Amelie Laute, Xavier Mouy, Filipa I. P. Samarra","doi":"10.1111/mms.13211","DOIUrl":"https://doi.org/10.1111/mms.13211","url":null,"abstract":"<p>The distribution and occurrence of killer whales around Iceland are primarily studied in coastal herring grounds, with limited knowledge beyond these areas. This study employed opportunistic passive acoustic monitoring (PAM) data from four regions across Icelandic inshore and offshore waters to investigate killer whale distribution between 2018 and 2023. An automatic detector-and-classifier algorithm identified killer whale burst-pulsed calls, manually confirmed by human observers. Killer whale calls were detected on a total of 59 of 3075 recording days over a broader geographic area than previously documented. Detections were spread throughout the years, and in some cases, potential feeding behavior could be inferred. In the south of Iceland, killer whales were detected throughout the winter period; their presence outside of the summer months was previously undocumented. In the west, daily occurrences differed between two locations, which may be linked to the distribution of herring. In the east and northeast, killer whales were detected in the summer months, aligning with the abundance of herring in these regions. This study highlights the importance of PAM for year-round monitoring of killer whale occurrence in the North Atlantic and contributes to our understanding of how they may respond to potential changes in prey dynamics.</p>","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":"41 2","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/mms.13211","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749907","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":"Speaking of forms of life: The language of conservation. By Claudio Campagna, Daniel Guevara, Springer Nature. 2023. pp. 253. ISBN: 978-3-031-34533-3. US$139.99 (Hardcover). ISBN: 978-3-031-34534-0. US$109.00 (eBook). https://doi.org/10.1007/978-3-031-34534-0","authors":"Randall R. Reeves","doi":"10.1111/mms.13214","DOIUrl":"https://doi.org/10.1111/mms.13214","url":null,"abstract":"","PeriodicalId":18725,"journal":{"name":"Marine Mammal Science","volume":"41 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/mms.13214","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120091","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}