Academic literature on the topic 'Atlantic spotted dolphin'

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Journal articles on the topic "Atlantic spotted dolphin"

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Estep, J. S., R. E. Baumgartner, F. Townsend, D. A. Pabst, W. A. Mclellan, A. Friedlaender, D. G. Dunn, and T. P. Lipscomb. "Malignant Seminoma with Metastasis, Sertoli Cell Tumor, and Pheochromocytoma in a Spotted Dolphin (Stenella frontalis) and Malignant Seminoma with Metastasis in a Bottlenose Dolphin (Tursiops truncatus)." Veterinary Pathology 42, no. 3 (May 2005): 357–59. http://dx.doi.org/10.1354/vp.42-3-357.

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Seminoma with metastasis was diagnosed in a spotted dolphin ( Stenella frontalis) and an Atlantic bottlenose dolphin ( Tursiops truncatus). Sertoli cell tumor and pheochromocytoma were also diagnosed in the spotted dolphin. The spotted and bottlenose dolphins were adult males that stranded and died on the coasts of northwest Florida and southeast North carolina, respectively. Neoplasia is infrequently reported in cetaceans. This is the first report of seminoma, Sertoli cell tumor, and pheochromocytoma in a dolphin, the first report of three distinct neoplasms in a dolphin, and one of the few reports of malignant neoplasia in dolphins.
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Leslie, Matthew S., and Phillip A. Morin. "Structure and phylogeography of two tropical predators, spinner ( Stenella longirostris ) and pantropical spotted ( S. attenuata ) dolphins, from SNP data." Royal Society Open Science 5, no. 4 (April 2018): 171615. http://dx.doi.org/10.1098/rsos.171615.

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Little is known about global patterns of genetic connectivity in pelagic dolphins, including how circumtropical pelagic dolphins spread globally following the rapid and recent radiation of the subfamily delphininae. In this study, we tested phylogeographic hypotheses for two circumtropical species, the spinner dolphin ( Stenella longirostris ) and the pantropical spotted dolphin ( Stenella attenuata ), using more than 3000 nuclear DNA single nucleotide polymorphisms (SNPs) in each species. Analyses for population structure indicated significant genetic differentiation between almost all subspecies and populations in both species. Bayesian phylogeographic analyses of spinner dolphins showed deep divergence between Indo-Pacific, Atlantic and eastern tropical Pacific Ocean (ETP) lineages. Despite high morphological variation, our results show very close relationships between endemic ETP spinner subspecies in relation to global diversity. The dwarf spinner dolphin is a monophyletic subspecies nested within a major clade of pantropical spinner dolphins from the Indian and western Pacific Ocean populations. Population-level division among the dwarf spinner dolphins was detected—with the northern Australia population being very different from that in Indonesia. In contrast to spinner dolphins, the major boundary for spotted dolphins is between offshore and coastal habitats in the ETP, supporting the current subspecies-level taxonomy. Comparing these species underscores the different scale at which population structure can arise, even in species that are similar in habitat (i.e. pelagic) and distribution.
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Au, Whitlow W. L., and Denise L. Herzing. "Echolocation signals of wild Atlantic spotted dolphin (Stenella frontalis)." Journal of the Acoustical Society of America 113, no. 1 (January 2003): 598–604. http://dx.doi.org/10.1121/1.1518980.

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De Boer, Marijke Nita. "Cetaceans observed in Suriname and adjacent waters." Latin American Journal of Aquatic Mammals 10, no. 1 (August 24, 2015): 2–19. http://dx.doi.org/10.5597/lajam00189.

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Very little information exists about the cetaceans in the Guianas: Suriname and its neighboring countries Guyana and French Guiana. During a dedicated cetacean survey carried out from a geophysical seismic survey vessel in the offshore waters of Suriname (May-September 2012), the occurrence of 13 cetacean species was documented and of those, 11 were newly documented for this area. The species observed by the author included sperm whale (Physeter macrocephalus), Bryde’s whale (Balaenoptera edeni), false killer whale (Pseudorca crassidens), melon-headed whale (Peponocephala electra), roughtoothed dolphin (Steno bredanensis), long-beaked common dolphin (Delphinus capensis), Fraser’s dolphin (Lagenodelphis hosei), pantropical spotted dolphin (Stenella attenuata) and spinner dolphin (Stenella longirostris). During transit to the survey area (Trinidad to Suriname) incidental sightings were recorded which included common bottlenose dolphin (Tursiops truncatus) off Trinidad, Stenella sp. off Guyana and Guiana dolphin (Sotalia guianensis) at the entrance of the Suriname River. Opportunistic records originating from the periods December 2008-March 2009 and August-October 2012 were forwarded to the author. These records included common bottlenose dolphin, Atlantic spotted dolphin (Stenella frontalis) and short-finned pilot whale (Globicephala macrorhynchus). There is a growing need to identify critical areas for marine biodiversity conservation, both locally and regionally. This paper describes the general occurrence of the cetacean community encountered in Suriname waters in summer. The study revealed that the offshore cetacean community in Suriname is best described as primarily a tropical community, dominated by odontocetes (dolphins and sperm whales). Although the species diversity was relatively high, the overall cetacean relative abundance index (number of animals per 100km effort) was low, which is consistent for tropical equatorial offshore waters. Apart from the sperm whale and the Guiana dolphin, all the other species recorded represent new species records for Suriname. It is recommended that more continuous monitoring in different seasons be carried out in order to gain a better understanding of the occurrence, distribution and status of the different cetacean species within the region.
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Sierra, Eva, Antonio Fernández, Carolina Fernández-Maldonado, Simona Sacchini, Idaira Felipe-Jiménez, Simone Segura-Göthlin, Ana Colom-Rivero, et al. "Molecular Characterization of Herpesviral Encephalitis in Cetaceans: Correlation with Histopathological and Immunohistochemical Findings." Animals 12, no. 9 (April 29, 2022): 1149. http://dx.doi.org/10.3390/ani12091149.

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Herpesviruses are causative agents of meningitis and encephalitis in cetaceans, which are among the main leading known natural causes of death in these species. Brain samples from 103 stranded cetaceans were retrospectively screened for the presence of herpesvirus DNA in the brain. Molecular detection of Cetacean Morbillivirus was performed in HV positive brain cases. Histopathologic evaluation of brain samples included the presence or absence of the following findings (n = 7): meningitis, perivascular cuffings, microgliosis, intranuclear inclusion bodies, malacia, neuronal necrosis and neurophagic nodules, and haemorrhages. Histological evidence of the involvement of other etiological agents led to complementary analysis. We detected the presence of alpha and gamma-HVs in 12 out of 103 (11.6%) brain samples from stranded cetaceans of five different species: one bottlenose dolphin, six striped dolphins, three Atlantic spotted dolphins, one Cuvier’s beaked whale, and one common dolphin. Pathogenic factors such as viral strain, age, sex, and the presence of co-infections were analysed and correlated with the brain histopathological findings in each case. Herpesvirus was more prevalent in males, juveniles, and calves and a 41.6% incidence of co-infections in the brain was detected in our study: three with Dolphin Morbillivirus, one with Staphilococcus aureus septicaemia and one with Brucella spp.
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Siciliano, Salvatore, Renata Maria A. Ramos, Ana Paula M. Di Beneditto, Marcos César O. Santos, Ana Bernadete Fragoso, José Lailson Brito, Alexandre F. Azevedo, et al. "Age and growth of some delphinids in south-eastern Brazil." Journal of the Marine Biological Association of the United Kingdom 87, no. 1 (February 2007): 293–303. http://dx.doi.org/10.1017/s0025315407053398.

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This study provides the first compilation on age and growth of some delphinids in south-eastern Brazil (18°25′S–25°45′S). A total of 154 delphinids were reported: 44 Atlantic spotted dolphin Stenella frontalis; 36 bottlenose dolphin Tursiops truncatus; 26 ‘Brazilian’ common dolphin Delphinus sp.; 20 rough-toothed dolphin Steno bredanensis; 16 Fraser's dolphin Lagenodelphis hosei; 3 false killer whale Pseudorca crassidens; 3 unidentified Stenella sp.; 2 pantropical spotted dolphin Stenella attenuata; 2 short-finned pilot whale Globicephala macrorhynchus; 1 spinner dolphin Stenella longirostris; and 1 striped dolphin Stenella coeruleoalba. Age was estimated by counting the number of growth layer groups present in the dentine in 74.5% of the sample. The growth of 92 individuals of the first five species was determined by the Gompertz model to length-at-age data. Stenella frontalis—the oldest specimen was 23 y and the asymptotic length of 224.4 cm predicted by growth curve occurred at about 20 y; T. truncatus—the oldest specimen was 26 y and the asymptotic length of 301.3 cm predicted by growth curve occurred at about 20 y; Delphinus sp.—the oldest dolphin was 18 y and the asymptotic length of 215.9 cm predicted by growth curve occurred at about 5–6 y; S. bredanensis—the oldest specimen was 24 y and the asymptotic length of 258.1 cm predicted by growth curve occurred at about 10 y; L. hosei—the oldest specimen was 19 y and the asymptotic length of 231.2 cm predicted by growth curve occurred at about 7–8 y. Only age was estimated for the other species. The age-at-length data for S. frontalis, Delphinus sp., S. bredanensis and L. hosei were consistent, suggesting a good agreement with previous work on these species. For T. truncatus, the age at asymptotic length obtained in this study might be confirmed by increasing the sample size. The information currently presented will contribute to further life history research of delphinids on the western south Atlantic coast.
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Luksenburg, Jolanda A. "The cetaceans of Aruba, southern Caribbean." Journal of the Marine Biological Association of the United Kingdom 94, no. 6 (April 29, 2013): 1161–74. http://dx.doi.org/10.1017/s0025315413000337.

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Aruba is one of the most densely populated islands in the Caribbean. However, very little is known about its cetaceans. In 2010 and 2011, a total of 19721 km (1686 h) boat-based surveys over nearshore transects resulted in 117 positively-identified sightings comprising eight species. New records are also added for one of three previously-documented species. Five additional species were documented from strandings or reports by others. This brings the total number of cetacean species identified in Aruban waters to 16, of which nine are authenticated here for the first time. Atlantic spotted dolphin (Stenella frontalis (N = 59) and bottlenose dolphin (Tursiops truncatus) (N = 33) were the most frequently observed species, with sightings of both year-round, followed by spinner dolphin (S. longirostris) and false killer whale (Pseudorca crassidens). Additional species recorded are pantropical spotted dolphin (S. attenuata), striped dolphin (S. coeruleoalba), common dolphin (Delphinus capensis), rough-toothed dolphin (Steno bredanensis), short-finned pilot whale (Globicephala macrorhynchus), killer whale (Orcinus orca), Risso's dolphin (Grampus griseus), humpback whale (Megaptera novaeangliae), Bryde's/Eden's whale (Balaenoptera brydei/edeni), sperm whale (Physeter macrocephalus) and an unidentified beaked whale (Mesoplodon sp.). All cetaceans were sighted within 22 km of the coast in relatively shallow waters. Sighting rate was low (0.69 cetacean sightings per 100 km). Sightings of calves and neonates indicate that Aruba may be a nursing or breeding area for some species. The presence of several species of cetaceans in Aruba's coastal waters year-round indicates that status and threat assessments are needed to protect them.
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Bittencourt, Lis, Mariana Barbosa, Elitieri B. Santos-Neto, Tatiana L. Bisi, José Lailson-Brito, and Alexandre F. Azevedo. "Whistles of Atlantic spotted dolphin from a coastal area in the southwestern Atlantic Ocean." Journal of the Acoustical Society of America 148, no. 5 (November 2020): EL420—EL426. http://dx.doi.org/10.1121/10.0002637.

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Weir, Caroline R., Colin D. MacLeod, and Graham J. Pierce. "Habitat preferences and evidence for niche partitioning amongst cetaceans in the waters between Gabon and Angola, eastern tropical Atlantic." Journal of the Marine Biological Association of the United Kingdom 92, no. 8 (April 3, 2012): 1735–49. http://dx.doi.org/10.1017/s0025315412000148.

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The habitat preferences and niches of eight cetacean species inhabiting eastern tropical Atlantic waters between Angola and Gabon (1°N–11°S latitude) were examined. A total of 2873 cetacean sightings, recorded between January 2004 and June 2009, was assigned to 10 × 10 km grid cells and linked to four ecogeographical variables (EGVs): water depth, seabed slope, sea surface temperature (SST) and relative frontal strength. Classification trees revealed that the habitat preferences (in terms of the habitats sampled) of most species were primarily determined by SST (for Bryde's whale, sperm whale, short-finned pilot whale and common dolphin) and water depth (for Risso's dolphin, bottlenose dolphin and Atlantic spotted dolphin). Seabed slope was the most important EGV describing the presence of the striped dolphin. A principal component analysis was used to compare the niches of the species with respect to the four EGVs. Nineteen species pairs (68%) differed significantly in median principal component (PC) score for the first PC axis, suggesting differences in their niche centres for that axis. Sixteen species pairs (57%) differed significantly in PC score variance suggesting differences in the niche widths along the first PC axis. Water depth and SST were the most important variables for the first PC axis. Together, these results suggest that cetacean species inhabiting the eastern tropical Atlantic exhibit interspecific variation in their habitat preferences, and so differ in the niches that they occupy. These differences are most likely related to variation in prey species and foraging strategy.
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Santos, Marcos Cesar de Oliveira, Giovanna Corrêa e. Figueiredo, and Marie-Francoise Van Bressem. "Cetaceans using the marine protected area of "Parque Estadual Marinho da Laje de Santos", Southeastern Brazil." Brazilian Journal of Oceanography 65, no. 4 (December 2017): 605–13. http://dx.doi.org/10.1590/s1679-87592017130606504.

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Abstract The aim of this study was to evaluate the presence of cetaceans in the waters surrounding the Marine Protected Area (MPA) known as “Parque Estadual Marinho da Laje de Santos (PEMLS)”, placed in coastal waters at the southeastern coast of Brazil. Boat-based surveys were conducted once a month from June 2013 to June 2015. A specific transect was followed to cover the area of the quoted MPA, as well as its borders. A total of 24 boat-surveys rendered 18 sightings of cetacean groups of the following species: Atlantic spotted dolphin (Stenella frontalis) (12), rough-toothed dolphin (Steno bredanensis) (2), common dolphin (Delphinus delphis) (1), Bryde’s whale (Balaenoptera edeni) (2) and common minke whale (Balaenoptera acutorostrata) (1). Sightings of S. frontalis, the commonest sighted species, was positively correlated with water depth (Mantel test; r = 0.8072; p < 0.05). Photoidentified individuals moved back and forth to inner and outer areas of the MPA, remaining in the area throughout the 2-year survey. “Paisley” cutaneous marks of unknown origin were reported in two common dolphins for the first time in local waters. As the PEMLS has been used as an important spot for SCUBA divers, it is recommended that cetacean sightings could still be gathered in a future partnership, as well as using the acoustics tool to detect their presence when researchers are not in the field.
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Dissertations / Theses on the topic "Atlantic spotted dolphin"

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Zaretsky, Susan C. "A Comparison of Bottlenose Dolphin (Tursiops Truncatus), Atlantic Spotted Dolphin (Stenella frontalis), and Pilot Whale (Globicephala Sp.) Vocalizations in the Western North Atlantic and Northern Gulf of Mexico." NSUWorks, 2005. http://nsuworks.nova.edu/occ_stuetd/249.

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Differences in whistle types between species and populations of dolphins may arise from differences in body size, environmental conditions, geographic separation, and vocal learning between animals. Assessing vocalization differences between populations of delphinids, as well as the mechanism of divergence, has become a subject of interest since acoustic differences may help to distinguish between populations at sea. In this study, bottlenose dolphin (Tursiops truncatus), Atlantic spotted dolphin (Stenella frontalis), and pilot whale (Globicephala sp.) populations in U.S. waters were quantitatively compared to determine if differences in whistle structure exist between both neighboring and geographically separated populations. Comparisons were made for nine whistle characteristics between northern Gulf of Mexico and western North Atlantic populations of bottlenose dolphins and pilot whales and between continental shelf and offshore populations of Atlantic spotted dolphins in the western North Atlantic. Whistle characteristics were measured for 3,836 pilot whale whistles, 1,703 Atlantic spotted dolphin whistles, and 2,715 bottlenose dolphin whistles recorded between 2002 and 2004. Differences between groups were evaluated using principal components analysis and discriminant analysis. Bottlenose dolphin whistles in the Atlantic were significantly different (Hotelling's T-squared, p < 0.0001) from those in the Gulf of Mexico, differing chiefly in the whistle characteristics of end frequency, duration, and the number of inflection points. Offshore Atlantic spotted dolphin whistles were significantly different (Hotelling's T-squared, p < 0.0003) from those of the continental shelf population, differing principally in high frequency, central frequency, and bandwidth. No significant difference was found between pilot whale whistles in the two ocean basins. The whistle differences demonstrated in this study indicate that acoustic divergence exists between distinct populations and may arise from geographic isolation or due to habitat separation between neighboring but genetically distinct groups. This study suggests that acoustic studies are an excellent and costefficient method to assess population structure.
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Wang, Amy (Hui-Shan). "The Effects Of Mercuric Chloride On Cultured Atlantic Spotted Dolphin (Stenella Plagiodon) Renal Cells And The Role Of Selenium In Protection." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/9777.

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Marine mammals are known for their low susceptibility to mercury toxicity, and it was hypothesized that selenium may play a role in protection against mercury toxicity. To gain insight into the mechanisms of the low susceptibility of cetaceans, we investigated the in vitro effects (1) of mercuric chloride (HgCl₂) on the ultrastructure and cell death of Atlantic spotted dolphin renal cells (Sp1K cells), (2) of HgCl₂ on the cell proliferation and cell cycle status of Sp1K and Rhesus monkey renal cells (MK2), and (3) of sodium selenite (Na₂SeO₃) on cell proliferation and cell death of control and HgCl₂-treated Sp1K cells. HgCl₂ affected multiple organelles and nuclei in Sp1K cells, and induced apoptosis in a time-and dose-dependent manner. Both ultrastructural changes and induction of apoptosis were milder than seen in other cell types in previous publications. In addition, Sp1K cells were able to proliferate at 25 µM HgCl₂ while MK2 cells were killed at 15 µM HgCl₂. An increase in percentage of cells in the G0/G1 phase in the cell cycle and a decrease in S, and G2/M phase cells were seen in Sp1K cells exposed to more than 10 uM HgCl₂ more than 72 hours. MK2 cells showed cell cycle changes only at 24 hours exposure, and may be due to a sensitive subgroup. These data suggested that Sp1K cells were less susceptible than other cell types in a cell-specific way, which was independent of selenium protection. Concurrent exposure to Na₂SeO₃ provided protection against the HgCl₂-induced decrease in cell proliferation of Sp1K. The protective effects were greater if Na₂SeO₃ and HgCl₂ were premixed, but disappeared if exposures did not overlap. Although pretreatments with Na₂SeO₃ alone did not provide protection, they increased the protection of selenium administered later. Furthermore, Na₂SeO₃ decreased HgCl₂-induced apoptosis. These data demonstrated the Na₂SeO₃ protection against HgCl₂ toxicity in Sp1K cells in terms of cell proliferation and apoptosis. This study is the first report that reveals the existence of mercury-selenium antagonism in cultured cetacean cells. The data supported the hypothesis that selenium protection against mercury toxicity is, at least partially, through competition of binding sites and formation of mercury-selenium complex.
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Books on the topic "Atlantic spotted dolphin"

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Gunderson, Megan M. Spotted dolphins. Edina, Minn: ABDO Pub., 2010.

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Herzing, Denise L. The Wild Dolphin Project: Long-term research of Atlantic spotted dolphins in the Bahamas. Jupiter, FL: Wild Dolphin Project, 2002.

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Timmerman, John R. Seal/dolphin - Phoca/Stenella: A skeletal comparison of two marine mammals. [Durham, NC] (P.O. Box 2777, Durham 27715): North Carolina Fossil Club, 1997.

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Gunderson, Megan M. Spotted Dolphins. ABDO Publishing Company, 2010.

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Dolphin Tales : True Stories of the Atlantic Spotted Dolphins. Wayne Scott Smith, 2000.

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Herzing, Denise L. Dolphin Diaries: My 25 Years with Spotted Dolphins in the Bahamas. St. Martin's Press, 2011.

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Dolphin Diaries. Griffin, 2012.

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Dolphin Diaries. St. Martin's Griffin, 2011.

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publishing, oliver. Atlantic Spotted Dolphins Calendar 2022. Independently Published, 2021.

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publishing, Awesome Calendar 2022. Atlantic Spotted Dolphins Calendar 2022. Independently Published, 2021.

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Book chapters on the topic "Atlantic spotted dolphin"

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Silva, Mónica A., Pablo Chevallard, and Sergi Pérez-Jorge. "Atlantic Spotted Dolphin Stenella frontalis (G. Cuvier, 1829)." In Handbook of the Mammals of Europe, 1–30. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-65038-8_106-1.

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Herzing, Denise L., and William F. Perrin. "Atlantic Spotted Dolphin." In Encyclopedia of Marine Mammals, 40–42. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-12-804327-1.00050-9.

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Perrin, William F. "Atlantic Spotted Dolphin." In Encyclopedia of Marine Mammals, 54–56. Elsevier, 2009. http://dx.doi.org/10.1016/b978-0-12-373553-9.00014-6.

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Reports on the topic "Atlantic spotted dolphin"

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Au, W. W., and D. L. Herzing. Real-Time Acquisition of Echolocation Signals by Wild Atlantic Spotted Dolphin, Stenella frontalis, Utilizing Hydrophone Arrays with Simultaneous Underwater Video. Fort Belvoir, VA: Defense Technical Information Center, November 1997. http://dx.doi.org/10.21236/ada333284.

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Au, W. W., and D. L. Herzing. Real - Time Acquisition of Echolocation Signals by Wild Atlantic Spotted Dolphins. Fort Belvoir, VA: Defense Technical Information Center, November 1997. http://dx.doi.org/10.21236/ada362339.

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