Aquatic Mammals最新文献

{"title":"Synchronous Swimming and Diving Behaviour in a Group of Fin Whales (Balaenoptera physalus)","authors":"Anik Boileau, Jonathan Blais, Larry D. Mercier, M. Desmarchelier, Jamie Ahloy-Dallaire","doi":"10.1578/am.49.1.2023.87","DOIUrl":"https://doi.org/10.1578/am.49.1.2023.87","url":null,"abstract":"","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48097090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Orcas (Orcinus orca) Use Different Strategies to Prey on Rays in the Gulf of California","authors":"Jesús Erick Higuera-Rivas, E. M. Hoyos-Padilla, F. Elorriaga-Verplancken, Hiram Rosales‐Nanduca, Rick Rosenthal, J. Urbán R.","doi":"10.1578/am.49.1.2023.7","DOIUrl":"https://doi.org/10.1578/am.49.1.2023.7","url":null,"abstract":"","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43426720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Records of Postmortem Attentive Behavior on an Irrawaddy Dolphin (Orcaella brevirostris) Calf and Implications for Conservation in Kuching Bay, Sarawak, East Malaysia","authors":"Cindy Peter, G. Minton, Anna Norliza Zulkifli Poh, Ann Jie Goh, A. Tuen, Samuel Kiyui, M. Van Bressem, O. B. Tisen","doi":"10.1578/am.49.1.2023.44","DOIUrl":"https://doi.org/10.1578/am.49.1.2023.44","url":null,"abstract":"","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46132831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Purposeful Porpoise Training at Fjord&Bælt: The First 25 Years","authors":"M. Wahlberg, M. Amundin, Kirstin Anderson Hansen, Søren Hechmann Andersen, Marie-Anne Blanchet, Sabrina Brando, A. Buhl, G. Desportes, Sabina Fobian Hansen, C. Lockyer, Lee A. Miller, Marianne Rasmussen, U. Siebert, Mette Thybo","doi":"10.1578/am.49.1.2023.104","DOIUrl":"https://doi.org/10.1578/am.49.1.2023.104","url":null,"abstract":"During the past 25 years","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49494432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variability of Echolocation Clicks in Beluga Whales (Delphinapterus leucas) Within Shallow Waters","authors":"Zhongchang Song, T. A. Mooney, L. Quakenbush, R. Hobbs, E. Gaglione, C. Goertz, M. Castellote","doi":"10.1578/am.49.1.2023.62","DOIUrl":"https://doi.org/10.1578/am.49.1.2023.62","url":null,"abstract":"While echolocation is vital to the sensory ecology of odontocetes, we have few data characterizing the signals of most species, limiting our understanding of key attributes of these animals, especially for those with a diverse range of habitats. Beluga whales (Delphinapterus leucas) have successfully overcome the pressures of living in both shallow and deep open water habitats. We characterized the echolocation clicks of 13 wild beluga whales during temporary capture-and-release events in Bristol Bay, Alaska (USA). We extracted and examined 556 high-quality clicks from approximately 22 hours of recordings. As a group, the duration (41.1 ± 17.3 µs; mean ± SD), peak frequency (97.9 ± 34.4 kHz), centroid frequency (101.9 ± 23.9 kHz), -3 dB bandwidth (29.1 ± 14.4 kHz), -10 dB bandwidth (67.7 ± 31.8 kHz), and root mean square (RMS) bandwidth (27.8 ± 8.1 kHz) were assessed. These are the first on-axis data from wild belugas in their natural shallow water habitat within 1 m. Beluga whales emit clicks with high frequency and high source level in extremely shallow waters regardless of the potential strong reverberations and clutter. These results provide a foundation for future studies on how this species manipulates its sonar to successfully operate in acoustically challenging shallow waters.","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44757125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the Use of Diazepam in Stranded Dolphins and Porpoises for Husbandry and Veterinary Purposes","authors":"R. Kastelein, Martin J. Bakker, N. Jennings, Jennifer Covi-Dijkhuizen","doi":"10.1578/am.49.1.2023.94","DOIUrl":"https://doi.org/10.1578/am.49.1.2023.94","url":null,"abstract":"We evaluated the use of diazepam (Valium®) during the rehabilitation of odontocetes (dolphins and porpoises) to facilitate husbandry and for veterinary purposes, by analyzing detailed records from a period of 14 years of the treatment of 16 stranded individuals: harbor porpoises (Phocoena phocoena), white-beaked dolphins (Lagenorhynchus albirostris), a common dolphin (Delphinus delphis), and a striped dolphin (Stenella coeruleoalba). Diazepam was used occasionally (once per case or for a few days at a time) to facilitate husbandry, including for managing stressful and transitional circumstances and during transport. It was also used occasionally (once per case) for veterinary purposes, such as to reduce stress or to facilitate x-ray scanning, gastroscopy, blood sampling, or wound treatment. Diazepam was found to be effective as an anti-anxiety drug, to cause drowsiness (i.e., reduce activity levels), as a muscle relaxant, and as an appetite stimulant. The doses used were similar for husbandry and veterinary purposes (0.03 to 0.44 mg/kg body weight), and the drug was administered almost exclusively orally (via fish) or via intramuscular injection.","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44014298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Herd Size Dynamics and Observations on the Natural History of Dugongs (Dugong dugon) in the Andaman Islands, India","authors":"Swapnali Gole, Sumitra Prajapati, Nehru Prabakaran, J. A. Johnson, K. Sivakumar","doi":"10.1578/am.49.1.2023.53","DOIUrl":"https://doi.org/10.1578/am.49.1.2023.53","url":null,"abstract":"In the last four decades, dugong (Dugong dugon) aggregations have been rarely reported from the geographically isolated, vast seascape of the Andaman Islands, India. The Indian Ocean tsunami of 2004, hunting, coastal development, and habitat loss are the major causes of this change in the social system of dugongs in the Andaman Islands. Our long-term monitoring study (2017 to 2022) reveals a changing trend in aggregating behaviour of dugongs. In an inclusive, collaborative effort, we engaged multiple stakeholders using two approaches: (1) creating a spatially spread citizen science network targeting sea-faring agencies—the fishers, forest department, SCUBA divers, and defence bodies (Indian Navy and Indian Coast Guard); and (2) conducting standardized questionnaire surveys (UNEP/CMS) with fishers. Our approach yielded reports of 63 herd sightings of dugongs from the Andaman archipelago. The fishers reported 73.01% of the sightings, followed by the defence bodies (20.63%), forest department (3.18%), and SCUBA divers (3.18%). Smaller herds in our study comprised three to six individuals, with a social structure of “adults only” and “adult–calf.” The larger herds of seven to 13 individuals included an “adult–calf” combination with a greater number of adults accompanying two to three calves. More than 95% of these herd occurrences were reported from sheltered, coastal waters with resource concentrations (large seagrass meadows). Further, we present novel dugong occurrence reports from data-deficient regions like the Jarawa Tribal Reserve and the North Sentinel Island, along with dugong occurrences from Little Andaman, where the population was speculated to be locally extinct after the 2004 tsunami. These findings strongly advocate the involvement of multiple stakeholders as a cost-effective approach to monitoring the distribution and population of dugongs in larger seascapes like the Andaman and Nicobar Islands. Moreover, such an approach would be critical for sensitizing the local stakeholders regarding the conservation and management of large marine mammals such as dugongs.","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49246220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First Observations of Cooperative Circle Feeding in Southern Right Whales (Eubalaena australis)","authors":"María Belén Argüelles, C. Fiorito, M. Coscarella, A. Fazio, M. Bertellotti","doi":"10.1578/am.49.1.2023.1","DOIUrl":"https://doi.org/10.1578/am.49.1.2023.1","url":null,"abstract":"","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49358706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Introduction of a Novel Computerized Apparatus to California Sea Lions (Zalophus californianus)","authors":"Kelley A. Winship, Amber Ramos, Mark J. Xitco, Jr.","doi":"10.1578/am.49.1.2023.73","DOIUrl":"https://doi.org/10.1578/am.49.1.2023.73","url":null,"abstract":"The use of technology in laboratory and zoological settings has provided opportunities for advancement of cognition research as well as cognitive enrichment in a variety of species. Such systems have been successfully created for nonhuman primates and introduced to other anatomically and physiologically diverse species such as bears and tortoises. However, such systems have yet to be used with frequency in aquatic species given the challenge of incorporating accessible technology in such a setting. Herein, we report the successful creation and implementation of a novel manipulatable computerized system with California sea lions (Zalophus californianus) housed in outdoor sea pens. The Enclosure Video Enrichment (EVE) system was created and provided to three adult male sea lions living at the U.S. Navy’s Marine Mammal Program. The interface was modified from those used with other species to accommodate the anatomical and physiological differences of the study subjects. Training procedures were adapted from those successfully used with nonhuman primates to emphasize successive learning approximations. Each of the sea lions introduced to EVE successfully learned to engage with the system at differing rates over the course of a year and a half. While each showed significant differences in interaction style (e.g., number of button presses), all were able to achieve the same criterion for acquisition. This system is the first recorded success in providing a technological means to test cognition in California sea lions through an animal-manipulated interface and has the potential to function as a form of cognitive enrichment in this species.","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48374000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Northern Range Expansion of California Coastal Bottlenose Dolphins (Tursiops truncatus)","authors":"W. Keener, Marc A. Webber, T. Markowitz, Mark P. Cotter, Daniela Maldini, R. H. Defran, M. Rice, Amanda J. Debich, A. Lang, D. L. Kelly, Alex G. Kesaris, M. Bearzi, K. Causey, David Anderson, Laurie Shuster, D. Weller","doi":"10.1578/am.49.1.2023.29","DOIUrl":"https://doi.org/10.1578/am.49.1.2023.29","url":null,"abstract":"The California coastal stock of bottlenose dolphins (Tursiops truncatus) expanded its range north from the Southern California Bight, its historical range, into Central California coincident with the 1982-1983 El Niño event. Since the late 1980s, bottlenose dolphin sightings north of Central California have been increasingly reported. To determine the present-day northern range limit for these dolphins, photo-identification efforts were carried out from 2007 to 2018 in San Francisco Bay and nearby coastal waters during which 84 individuals were identified. The results demonstrate a significant range expansion along the Northern California coast at least as far as Sonoma County (38.7º N). Comparisons with photo-identification catalogs compiled south of San Francisco from 1981 to 2015 revealed that 92% of the 84 dolphins were matched to Monterey Bay (n = 77), Santa Barbara (n = 27), Santa Monica Bay (n = 29), Orange County (n = 9), Corona Del Mar (n = 2), San Diego (n = 31), and Ensenada, Mexico (n = 1). Many of the 84 dolphins (54%) showed long-range movements across the stock’s range between the Southern California Bight and the San Francisco Bay Area. The greatest movement distance recorded was by two individuals first observed in San Diego, California, in the 1980s and subsequently in Puget Sound, Washington (47º N), in 2017, setting a coastal bottlenose dolphin long-distance movement record of at least 2,500 km.","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45541041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}