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
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.
{"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}
Sahya N. Haria, I. Hardy, Stefan Harzen, Barbara J. Brunnick
Atlantic bottlenose dolphins (Tursiops truncatus)are frequently observed in the coastal waters of Palm Beach County, Florida. In this study, mark-recapture surveys using photo-identification techniques were used to estimate population abundance of Atlantic bottlenose dolphins in this area for the first time. Surveys were conducted for 11 years, between 2005 and 2016, during which 384 individuals were identified and catalogued from distinctive nicks and notches on their dorsal fins. Each marked individual was documented an average of 2.4 times (range 1 to 19). Low resighting rates and a constant rate of encounter with previously unmarked individuals suggest that the population is open, comprising both residents and transients. The Jolly-Seber method was used to estimate population abundance. Estimates of abundance varied greatly in time with an overall average of 264 individuals and a 95% confidence interval of 162 to 366 (SE = 51.3), indicating a variable population size. As threats in the region continue to rise, such as overfishing, toxic algae blooms, and environmental pollutants, this understudied population may be vulnerable to decline. A better understanding of the population dynamics could facilitate more effective conservation action.
{"title":"Estimating Population Abundance of Atlantic Bottlenose Dolphins (Tursiops truncatus) in the Coastal Waters of Palm Beach County, Southeastern Florida","authors":"Sahya N. Haria, I. Hardy, Stefan Harzen, Barbara J. Brunnick","doi":"10.1578/am.49.1.2023.19","DOIUrl":"https://doi.org/10.1578/am.49.1.2023.19","url":null,"abstract":"Atlantic bottlenose dolphins (Tursiops truncatus)are frequently observed in the coastal waters of Palm Beach County, Florida. In this study, mark-recapture surveys using photo-identification techniques were used to estimate population abundance of Atlantic bottlenose dolphins in this area for the first time. Surveys were conducted for 11 years, between 2005 and 2016, during which 384 individuals were identified and catalogued from distinctive nicks and notches on their dorsal fins. Each marked individual was documented an average of 2.4 times (range 1 to 19). Low resighting rates and a constant rate of encounter with previously unmarked individuals suggest that the population is open, comprising both residents and transients. The Jolly-Seber method was used to estimate population abundance. Estimates of abundance varied greatly in time with an overall average of 264 individuals and a 95% confidence interval of 162 to 366 (SE = 51.3), indicating a variable population size. As threats in the region continue to rise, such as overfishing, toxic algae blooms, and environmental pollutants, this understudied population may be vulnerable to decline. A better understanding of the population dynamics could facilitate more effective conservation action.","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":"44177259","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}
Pub Date : 2022-11-15DOI: 10.1578/am.48.6.2022.501
Guilherme Maricato, Ana Luiza Pires, R. Tardin, Sérgio C. Moreira, M. A. Alves, Israel S. Maciel
{"title":"Traveling at Night: The First Record of Humpback Whales’ (Megaptera novaeangliae) Wake Riding During the Nighttime","authors":"Guilherme Maricato, Ana Luiza Pires, R. Tardin, Sérgio C. Moreira, M. A. Alves, Israel S. Maciel","doi":"10.1578/am.48.6.2022.501","DOIUrl":"https://doi.org/10.1578/am.48.6.2022.501","url":null,"abstract":"","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46274607","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}
Pub Date : 2022-11-15DOI: 10.1578/am.48.6.2022.737
Camila Lazcano‐Pacheco, Mario A. Onofre-Díaz, Raziel Meza-Yáñez, Myriam Llamas-González, Luis M. Bautista-Moreno, A. Olivos-Ortiz, Christian D. Ortega‐Ortiz
{"title":"Cetacean Mortality Related to Ship Traffic in the Mexican Central Pacific","authors":"Camila Lazcano‐Pacheco, Mario A. Onofre-Díaz, Raziel Meza-Yáñez, Myriam Llamas-González, Luis M. Bautista-Moreno, A. Olivos-Ortiz, Christian D. Ortega‐Ortiz","doi":"10.1578/am.48.6.2022.737","DOIUrl":"https://doi.org/10.1578/am.48.6.2022.737","url":null,"abstract":"","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47820279","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}
Pub Date : 2022-11-15DOI: 10.1578/am.48.6.2022.520
Jorge Alberto Martínez-Fernández, Aurora Paniagua-Mendoza, F. Elorriaga-Verplancken, Hiram Rosales‐Nanduca, A. Blanco-Jarvio, R. Robles-Hernández, Claudia Ballínez, Wojtek Bachara
{"title":"First Record of a Blainville’s Beaked Whale (Mesoplodon densirostris) in Cuba","authors":"Jorge Alberto Martínez-Fernández, Aurora Paniagua-Mendoza, F. Elorriaga-Verplancken, Hiram Rosales‐Nanduca, A. Blanco-Jarvio, R. Robles-Hernández, Claudia Ballínez, Wojtek Bachara","doi":"10.1578/am.48.6.2022.520","DOIUrl":"https://doi.org/10.1578/am.48.6.2022.520","url":null,"abstract":"","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42545227","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}
Pub Date : 2022-11-15DOI: 10.1578/am.48.6.2022.671
Marjorie A. Cox, Sarah A. Codde, Matthew J. Lau
{"title":"Juvenile Northern Elephant Seal (Mirounga angustirostris) Onshore with Prey at Point Reyes National Seashore","authors":"Marjorie A. Cox, Sarah A. Codde, Matthew J. Lau","doi":"10.1578/am.48.6.2022.671","DOIUrl":"https://doi.org/10.1578/am.48.6.2022.671","url":null,"abstract":"","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42313338","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}
Pub Date : 2022-11-15DOI: 10.1578/am.48.6.2022.578
A. Bisther, D. Vongraven
{"title":"Killer Whale (Orcinus orca) Male Carrying a Dead Calf","authors":"A. Bisther, D. Vongraven","doi":"10.1578/am.48.6.2022.578","DOIUrl":"https://doi.org/10.1578/am.48.6.2022.578","url":null,"abstract":"","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43861788","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}
Pub Date : 2022-11-15DOI: 10.1578/am.48.6.2022.674
A. Read, Danielle M. Waples, Heather J. Foley, Z. Swaim, J. Calambokidis, Alex Vanderzee, D. Nowacek, B. Southall
{"title":"A Stampede of Risso’s Dolphins (Grampus griseus) Following Playbacks of the Calls of Mammal-Eating Killer Whales","authors":"A. Read, Danielle M. Waples, Heather J. Foley, Z. Swaim, J. Calambokidis, Alex Vanderzee, D. Nowacek, B. Southall","doi":"10.1578/am.48.6.2022.674","DOIUrl":"https://doi.org/10.1578/am.48.6.2022.674","url":null,"abstract":"","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47143184","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}
Pub Date : 2022-11-15DOI: 10.1578/am.48.6.2022.478
F. Elorriaga-Verplancken, Jorge E. Morales-Vázquez, Christian D. Ortega‐Ortiz, Myriam Llamas-González, Raziel Meza-Yáñez, D. Páez-Rosas
{"title":"Northernmost Record of the Galapagos Sea Lion (Zalophus wollebaeki): Sightings Along the Mexican Central Pacific and the Gulf of California During La Niña Conditions","authors":"F. Elorriaga-Verplancken, Jorge E. Morales-Vázquez, Christian D. Ortega‐Ortiz, Myriam Llamas-González, Raziel Meza-Yáñez, D. Páez-Rosas","doi":"10.1578/am.48.6.2022.478","DOIUrl":"https://doi.org/10.1578/am.48.6.2022.478","url":null,"abstract":"","PeriodicalId":8219,"journal":{"name":"Aquatic Mammals","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45934477","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：