Article
Marine & Freshwater Biology
Katie R. Pugliares-Bonner, Kate LaSpina, Kathryn S. Rose, Steven E. Travis, Kristina M. Cammen
Summary: The study of mass stranding events of Atlantic white-sided dolphins between 1999 and 2009 on Cape Cod, Massachusetts, revealed variations in social ecology across different times of the year. It was found that a greater number of mass stranding events occurred outside of the breeding season and there was evidence of age structuring during the breeding season. Despite their tendency to mass strand, stable, kin-based associations are not a defining feature of social group structure in this species.
MARINE MAMMAL SCIENCE
(2021)
Article
Neurosciences
George Andrew Reid, Sultan Darvesh
Summary: The study on the Atlantic white-sided dolphin's hippocampal formation revealed similarities and differences compared to terrestrial mammals, particularly in terms of acetylcholinesterase distribution, indicating possible alterations in connectivity. Overall, the cholinergic innervation and function of the hippocampal formation in the dolphin appears to be conserved like in other mammals.
JOURNAL OF COMPARATIVE NEUROLOGY
(2021)
Article
Fisheries
M-A Gose, E. Humble, A. Brownlow, B. Mikkelsen, C. Loftus, D. Wall, E. Rogan, M. ten Doeschate, N. Davison, R. Ogden
Summary: Understanding population genetic connectivity is crucial in managing highly mobile marine species, but obtaining genetic samples is challenging for species in inaccessible waters. This study uses samples from strandings and free-ranging individuals to assess genetic diversity and population structure of the Atlantic white-sided dolphin (AWSD). Results show a lack of population differentiation and species-wide genetic mixing in AWSD, highlighting the value of long-term stranding collections for cetacean research and conservation management.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Lisa K. K. Lauderdale, Michael T. T. Walsh, Kevin A. A. Mitchell, Douglas A. A. Granger, Jill D. D. Mellen, Lance J. J. Miller
Summary: This study provides comprehensive clinical pathology data for various species of dolphins kept in zoos and aquariums. The data can be used to compare hematological, serum, and plasma biochemical values in captive cetaceans.
Article
Acoustics
Yuka Mishima, Ikuo Matsuo, Yuu Karasawa, Marina Ishii, Tadamichi Morisaka
Summary: The directional properties and gain control of a pulsed call sequence in Pacific white-sided dolphins were investigated. The dolphins were found to adjust the acoustic active space of their pulsed call sequences by controlling the source levels.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Mahdi H. Al-Badrawi, Yue Liang, Kerri D. Seger, Christopher M. Foster, Nicholas J. Kirsch
Summary: Tracking species with expanding ranges is crucial to conservation efforts. This study focuses on the spread of Risso's and Pacific white-sided dolphins into the Arctic Ocean. Their similar sounds pose a challenge for differentiation using human analysts and classification algorithms. The authors propose using automatic detectors and classifiers on large acoustic datasets, particularly utilizing the variational mode decomposition (VMD) method to extract pulsed signal features. The VMD method achieved 81% accuracy, even with low SNR audio files.
SCIENTIFIC REPORTS
(2022)
Article
Marine & Freshwater Biology
Leanne R. Rosser, Tadamichi Morisaka, Yoko Mitani, Takeshi Igarashi
Summary: This study reports the first case of conspecific calf-directed aggression in Pacific white-sided dolphins, suggesting a possible infanticide attempt. The observation reveals a persistent attack on a neonate by 10 attackers, causing visible injuries. After 50 minutes, a change in the attacking group was observed, indicating a distinct group composition change.
Article
Biochemistry & Molecular Biology
Miwa Suzuki, Kaho Ohno, Eitaro Sawayama, Shin-Ichi Morinaga, Takushi Kishida, Teruyo Matsumoto, Haruhiko Kato
Summary: The study investigated the population structure of Pacific white-sided dolphins using genome-wide population genetic data and found two genetically distinct populations with limited interpopulation gene flow. The genotypic differences were also reflected in external morphology. Additionally, the analysis suggested that sea-level changes during the Last Glacial Period led to the allopatric divergence of this species in a limited area of the Sea of Japan.
Article
Marine & Freshwater Biology
Marin Matsushiro, Misato Nakamura, Yuko Chayahara, Takanori Kooriyama
Summary: Pacific white-sided dolphins migrate along the coast of Japan and rarely emit whistles, preferring to use pulses instead. This study aimed to clarify the acoustic characteristics and repertoire of PWSD whistles, which have not been reported before. The dolphins in Shakotan rarely emitted whistles, with vocalization rates higher during traveling than during foraging, and their whistle contours were classified into seven types.
MARINE MAMMAL SCIENCE
(2022)
Article
Multidisciplinary Sciences
Lisa K. Lauderdale, Michael T. Walsh, Kevin A. Mitchell, Douglas A. Granger, Jill D. Mellen, Lance J. Miller
Summary: This study provides comprehensive clinical pathology data on hematological, serum, and plasma biochemistry reference intervals for various marine mammals in zoos and aquariums, including common bottlenose dolphins, Indo-Pacific bottlenose dolphins, beluga whales, and Pacific white-sided dolphins. The research revealed statistically significant differences in several variables based on age, gender, and month, and generated reference intervals and values for a wide range of hematologic, serum, and plasma biochemical variables. Additionally, a mobile software application called ZooPhysioTrak was developed to provide species-specific reference intervals and values for cetacean management.
Article
Anatomy & Morphology
Shin-ichi Sekiya, Keiko Nishimaniwa, Yuko Tajima, Tadasu K. Yamada
Summary: Most intrinsic muscles of the forelimb in dolphins are degenerated or lost, except for the muscles around the shoulder joint. Dissecting the forelimbs of Pacific white-sided dolphins, we constructed a full-scale flipper model to study their movements. The neutral position of the flipper is maintained by the orientation of the humerus. The flipper movement is controlled by the insertion of muscles into the common tubercle of the humerus.
ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
(2023)
Article
Biodiversity Conservation
A. A. San Martin, M. N. Paso Viola, M. B. Tartaglia Gamarra, C. Ordonez, N. Asplanato, M. Torres, A. Dellabianca, Y. A. Becker, L. Bergagna, N. A. Dellabianca, L. Riccialdelli
Summary: This article reports the first sighting of a mixed pod of false killer whales and common bottlenose dolphins in Tierra del Fuego. The pod consisted of about 50 false killer whales and 4 common bottlenose dolphins, but only the false killer whales were involved in a mass-stranding event near urban settings. The reasons for the pod's presence in the channel are still unknown, and a better marine mammal-stranding network response program is needed in this region.
Article
Marine & Freshwater Biology
Ronald A. Kastelein, Nancy Jennings, Leonie A. E. Huijser
Summary: Observations at an odontocete rehabilitation center in the Netherlands revealed instances of interspecific cooperative behavior, including mutually beneficial cooperation and altruism, initiated by white-beaked dolphins towards humans and harbor porpoises. These observations provide valuable insights into the motivation and fitness benefits of such behavior.
Article
Chemistry, Multidisciplinary
Vincent Moxley-Paquette, Bing Wu, Daniel Lane, Monica Bastawrous, Paris Ning, Ronald Soong, Peter De Castro, Ivan Kovacevic, Thomas Frei, Juerg Stuessi, Danijela Al Adwan-Stojilkovic, Stephan Graf, Franck Vincent, Daniel Schmidig, Till Kuehn, Rainer Kuemmerle, Armin Beck, Michael Fey, Wolfgang Bermel, Falko Busse, Marcel Gundy, Holger Boenisch, Hermann Heumann, Ben Nashman, Rudraksha Dutta Majumdar, Andressa Lacerda, Andre J. Simpson
Summary: Microcoils offer a cost-effective method to improve detection limits for mass-limited samples, with single-sided planar microcoils allowing samples to be simply placed on top. However, the RF field decreases with distance from the coil surface, potentially limiting complex NMR pulse sequences. Double-tuned single-sided microcoils have not been used for 2D analysis of intact C-13 enriched samples.
MAGNETIC RESONANCE IN CHEMISTRY
(2022)
