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  • 1
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    Marine vertebrate zoonoses : an overview of the DAO Special Issue (2011)
    Inter-Research
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    Publication Date: 2022-05-25
    Description: Author Posting. © Inter-Research, 2008. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Diseases of Aquatic Organisms 81 (2008): 1-3, doi:10.3354/dao01940.
    Description: The role of marine birds, mammals, turtles and fish as vectors of infectious agents of potential risk to humans can be examined from a variety of perspectives. The studies in this DAO Special include a broad survey of multiple agents and species, a sequencing study of Giardia intestinalis haplotypes known to be pathogenic to humans, an assessment of risks to humans working with marine mammals, a source tracking study using E. coli ribotypes, studies of regional Salmonella and Brucella epizootiology, a serology survey and a case report of a herpes simplex infection in a dolphin. Additionally, a recently published study (Venn-Watson et al. 2008; Dis Aquat Org 79:87–93) classifying pure cultures of bacteria from a captive dolphin colony also pertains to this theme. These studies raise the following questions: whether the presence of zoonotic agents in marine vertebrates represents a risk to other marine vertebrates, humans, or both; what are the routes by which these marine vertebrate zoonotic infections are acquired and circulated in the marine ecosystem; to what degree are such agents subclinical versus causes of overt disease in marine vertebrates; what are the subsets of the human population most likely to be affected by such infections; and which human health preventive measures would seem reasonable?
    Keywords: Zoonosis ; Marine ; Vertebrate
    Repository Name: Woods Hole Open Access Server
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  • 2
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    Toxics source reduction and sewage upgrades eliminated winter flounder liver neoplasia (1984-2017) from Boston Harbor, MA, USA (2018)
    Inter-Research
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    Publication Date: 2022-05-25
    Description: © The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Diseases of Aquatic Organisms 131 (2018) 239-243, doi:10.3354/dao03299.
    Description: Chemical carcinogen biomarkers can validate public investment in environmental remediation. A major factor driving the clean-up of Boston Harbor, MA, USA, induced by the federal Clean Water Act legislation of 1972, was the high prevalence of petroleum and halogenated aromatic hydrocarbon contaminant-associated liver neoplasia in winter flounder Pseudopleuronectes americanus in the harbor in the 1980s. In the present study, we examined the spatial and temporal relationships between the suspended solids and contaminants in the municipal sewage discharge, and liver neoplasia and histopathology in flounder, from 1987 to 2017. Toxics source reduction, sewage treatment, and sludge removal in the 1990s and outfall relocation offshore in 2000 enabled a decreasing prevalence of persistent toxic chemicals in flounder, effluent, and sediment, and consequent disappearance of liver neoplasia and reduction of neoplasm-associated, hydropically vacuolated biliary epithelial cells to background levels. This supports long-term investment in elimination and treatment of anthropogenic waste streams and the value of federal regulatory mandates to maintain and improve regional environmental quality.
    Description: This work was supported by the Massachusetts Water Resources Authority, Woods Hole Oceanographic Institution, and US Public Health Service (USPHS) grant CA/ES44306.
    Keywords: Boston ; Sewage ; Solids ; Flounder ; Neoplasia ; Health
    Repository Name: Woods Hole Open Access Server
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  • 3
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    Criteria and case definitions for serious injury and death of pinnipeds and cetaceans caused by anthropogenic trauma (2013)
    Inter-Research
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    Publication Date: 2022-05-25
    Description: Author Posting. © Inter-Research, 2013. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Diseases of Aquatic Organisms 103 (2013): 229-264, doi:10.3354/dao02566.
    Description: Post-mortem examination of dead and live stranded beach-cast pinnipeds and cetaceans for determination of a cause of death provides valuable information for the management, mitigation and prosecution of unintentional and sometimes malicious human impacts, such as vessel collision, fishing gear entanglement and gunshot. Delayed discovery, inaccessibility, logistics, human safety concerns, and weather make these events challenging. Over the past 3 decades, in response to public concern and federal and state or provincial regulations mandating such investigations to inform mitigation efforts, there has been an increasing effort to objectively and systematically investigate these strandings from a diagnostic and forensic perspective. This Theme Section provides basic investigative methods, and case definitions for each of the more commonly recognized case presentations of human interactions in pinnipeds and cetaceans. Wild animals are often adversely affected by factors such as parasitism, anthropogenic contaminants, biotoxins, subclinical microbial infections and competing habitat uses, such as prey depletion and elevated background and episodic noise. Understanding the potential contribution of these subclinical factors in predisposing or contributing to a particular case of trauma of human origin is hampered, especially where putrefaction is significant and resources as well as expertise are limited. These case criteria descriptions attempt to acknowledge those confounding factors to enable an appreciation of the significance of the observed human-derived trauma in that broader context where possible.
    Description: Funded by NOAA Cooperative Agreement NA09OAR4320129.
    Keywords: Seal ; Dolphin ; Whale ; Marine mammal ; Entrapment ; Entanglement ; Vessel strike ; Gunshot
    Repository Name: Woods Hole Open Access Server
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  • 4
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    Mortality trends of stranded marine mammals on Cape Cod and southeastern Massachusetts, USA, 2000 to 2006 (2011)
    Inter-Research
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    Publication Date: 2022-05-25
    Description: Author Posting. © Inter-Research, 2010. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Diseases of Aquatic Organisms 88 (2010): 143-155, doi:10.3354/dao02146.
    Description: To understand the cause of death of 405 marine mammals stranded on Cape Cod and southeastern Massachusetts between 2000 and 2006, a system for coding final diagnosis was developed and categorized as (1) disease, (2) human interaction, (3) mass-stranded with no significant findings, (4) single-stranded with no significant findings, (5) rock and/or sand ingestion, (6) predatory attack, (7) failure to thrive or dependent calf or pup, or (8) other. The cause of death for 91 animals could not be determined. For the 314 animals that could be assigned a cause of death, gross and histological pathology results and ancillary testing indicated that disease was the leading cause of mortality in the region, affecting 116/314 (37%) of cases. Human interaction, including harassment, entanglement, and vessel collision, fatally affected 31/314 (10%) of all animals. Human interaction accounted for 13/29 (45%) of all determined gray seal Halichoerus grypus mortalities. Mass strandings were most likely to occur in northeastern Cape Cod Bay; 97/106 (92%) of mass stranded animals necropsied presented with no significant pathological findings. Mass strandings were the leading cause of death in 3 of the 4 small cetacean species: 46/67 (69%) of Atlantic white-sided dolphin Lagenorhynchus acutus, 15/21 (71%) of long-finned pilot whale Globicephala melas, and 33/54 (61%) of short-beaked common dolphin Delphinus delphis. These baseline data are critical for understanding marine mammal population health and mortality trends, which in turn have significant conservation and management implications. They not only afford a better retrospective analysis of strandings, but ultimately have application for improving current and future response to live animal stranding.
    Description: This work was supported by the National Oceanic and Atmospheric Administration (NOAA) John H. Prescott Program (NA03NMF4390046, NA05NMF4391165, NAO6NMF 4390130, NA17FX2054, NA16FX2053, NA03NMF4390479, NA04NMF4390044, NA05NMF4391157, and NA06NMF4390 164), the NOAA Coastal Ocean Program under award NA05NOS4781247, and the International Fund for Animal Welfare.
    Keywords: Disease ; Mass strandings ; Necropsy ; Cetaceans ; Pinnipeds
    Repository Name: Woods Hole Open Access Server
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  • 5
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    Lethal entanglement in baleen whales (2011)
    Inter-Research
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    Publication Date: 2022-05-25
    Description: Author Posting. © Inter-Research, 2011. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Diseases of Aquatic Organisms 96 (2011): 175-185, doi:10.3354/dao02385.
    Description: Understanding the scenarios whereby fishing gear entanglement of large whales induces mortality is important for the development of mitigation strategies. Here we present a series of 21 cases involving 4 species of baleen whales in the NW Atlantic, describing the available sighting history, necropsy observations, and subsequent data analyses that enabled the compilation of the manners in which entanglement can be lethal. The single acute cause of entanglement mortality identified was drowning from entanglement involving multiple body parts, with the animal’s inability to surface. More protracted causes of death included impaired foraging during entanglement, resulting in starvation after many months; systemic infection arising from open, unresolved entanglement wounds; and hemorrhage or debilitation due to severe gear-related damage to tissues. Serious gear-induced injury can include laceration of large vessels, occlusion of the nares, embedding of line in growing bone, and massive periosteal proliferation of new bone in an attempt to wall off constricting, encircling lines. These data show that baleen whale entanglement is not only a major issue for the conservation of some baleen whale populations, but is also a major concern for the welfare of each affected individual.
    Description: This case report analysis was supported in part by NOAA Cooperative Agreement No. NA09OAR4320129. Stranding response was supported by multiple NOAA Prescott awards to UNC Wilmington, Virginia Aquarium & Marine Science Center, the Cape Cod Stranding Network and Woods Hole Oceanographic Institution (WHOI).
    Keywords: Baleen whales ; Entanglement ; Mortality ; Cetacean ; Strandings ; Fishing gear ; Necropsy ; Northwestern Atlantic
    Repository Name: Woods Hole Open Access Server
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  • 6
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    Blubber thickness in right whales Eubalaena glacialis and Eubalaena australis related with reproduction, life history status and prey abundance (2011)
    Inter-Research
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    Publication Date: 2022-05-25
    Description: Author Posting. © Inter-Research, 2011. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 438 (2011): 267-283, doi:10.3354/meps09174.
    Description: The high variability in reproductive performance of North Atlantic right whales Eubalaena glacialis compared to southern right whales Eubalaena australis may reflect differences in lipid reserves. Amplitude-mode ultrasound was used to measure the thickness of right whale integument (epidermis and blubber, herein referred to as blubber thickness) in E. glacialis in the Bay of Fundy, Canada for 5 summer seasons and in E. australis off the South African coast for 2 austral winter seasons. E. glacialis had significantly thinner blubber layers (mean ±1 SD = 12.23 ± 2.16 cm, n = 172) than E. australis (16.13 ± 3.88 cm, n = 117), suggesting differing levels of nutrition between the 2 species. Blubber was thickest in females measured 3 to 6 mo prior to the start of pregnancy (E. glacialis), thinner during ­lactation (E. glacialis, E. australis) and then thicker with time after weaning (E. glacialis). These results suggest that lipids in blubber are used as energetic support for reproduction in female right whales. Blubber thickness increased in calves during suckling (E. glacialis, E. australis) but sub­sequently decreased after weaning (E. glacialis). Juvenile and adult male E. glacialis blubber thicknesses were compared between years of differing prey Calanus finmarchicus abundances (data from Pershing et al. 2005; ICES J Mar Sci 62:1511–1523); during a year of low prey abundance whales had significantly thinner blubber than during years of greater prey abundance. Taken together, these results suggest that blubber thickness is indicative of right whale energy balance and that the marked fluctuations in North Atlantic right whale reproduction have a nutritional component.
    Description: This project was made possible with funds provided by Massachusetts Environmental Trust, Office of Naval Research, National Marine Fisheries Service– National Oceanic and Atmospheric Administration, Northeast Consortium, Hussey Foundation, and National Research Foundation in South Africa.
    Keywords: Right whale ; Eubalaena ; Blubber thickness ; Body condition ; Reproduction ; Physiology ; Energy reserves
    Repository Name: Woods Hole Open Access Server
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  • 7
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    Body shape changes associated with reproductive status, nutritive condition and growth in right whales Eubalaena glacialis and E. australis (2012)
    Inter-Research
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    Publication Date: 2022-05-25
    Description: Author Posting. © Inter-Research, 2012. This article is posted here by permission of Inter-Research. The definitive version was published in Marine Ecology Progress Series 459 (2012): 135-156, doi:10.3354/meps09675.
    Description: Mammalian reproduction is metabolically regulated; therefore, the endangered status and high variability in reproduction of North Atlantic right whales Eubalaena glacialis necessitate accurate assessments at sea of the nutritional condition of living individuals. Aerial photogrammetry was used to measure dorsal body width at multiple locations along the bodies of free-swimming right whales at different stages of the female reproductive cycle (E. glacialis) and during the initial months of lactation (mother and calf Eubalaena australis) to quantify changes in nutritional condition during energetically demanding events. Principal components analyses indicated that body width was most variable at 60% of the body length from the snout. Thoracic, abdominal and caudal body width of E. australis thinned significantly during the initial months of lactation, especially at 60% of body length from the snout, while their calves’ widths and width-to-length ratios increased. The body shape of E. glacialis that had been lactating for 8 mo was significantly thinner than non-lactating, non-pregnant E. glacialis. Body shape of E. glacialis measured in the eighth month of lactation was significantly thinner than that of E. australis in the first month, but did not differ from that of E. australis in the third and fourth months. Body width was comparable with diameter calculated from girth of carcasses. These results indicate that mother right whales rely on endogenous nutrient reserves to support the considerable energy expenditure during the initial months of lactation; therefore, photogrammetric measurements of body width, particularly at 60% of body length from the snout, are an effective way to quantitatively and remotely assess nutritional condition of living right whales.
    Description: This project was made possible with funds provided by the National Oceanic and Atmospheric Administration (NOAA), National Marine Fisheries Service, the Northeast Consortium, and the Hussey Foundation through the Ocean Life Institute at Woods Hole Oceanographic Institution.
    Keywords: Right whale ; Body shape ; Body condition ; Aerial photogrammetry ; Reproduction ; Energetics ; Eubalaena
    Repository Name: Woods Hole Open Access Server
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  • 8
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    Swimming kinematics and efficiency of entangled North Atlantic right whales (2017)
    Inter-Research
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    Publication Date: 2022-05-25
    Description: © The Author(s), 2017. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Endangered Species Research 32 (2017): 1-17, doi:10.3354/esr00781.
    Description: Marine mammals are streamlined for efficient movement in their relatively viscous fluid environment and are able to alter their kinematics (i.e. fluke stroke frequency, amplitude, or both) in response to changes in force balance. Entanglement in fishing gear adds significant drag and buoyant forces that can impact swimming behaviors across a range of timescales. We deployed biologging tags during the disentanglement of 2 North Atlantic right whales Eubalaena glacialis to (1) examine how their kinematics changed in response to drag and buoyancy from entanglement in fishing gear, and (2) calculate resultant changes in swimming efficiency for one individual. We observed variable responses in dive behavior, but neither whale appeared to exploit added buoyancy to reduce energy expenditure. While some of the observed changes in behavior were individually specific, some swimming kinematics were consistently modulated in response to high drag and buoyancy associated with entangling gear, affecting thrust production. In high drag and buoyancy conditions, fluke strokes were significantly shorter and more variable in shape, and gliding was less frequent. Thrust and efficiency significantly differed among dive phases. Disentanglement reduced thrust coefficients ~4-fold, leading to 1.2 to 1.8-fold lower power (W). Ideal propulsive efficiency was significantly lower when entangled, though we detected no difference in observed propulsive efficiency between the conditions. Similar to carrying heavy objects or changing shoes, we present another condition where animals perceive unique movement constraints over seconds to minutes and develop compensatory strategies, altering their movement accordingly.
    Description: J.M.v.d.H was supported by a postgraduate scholarship from the Natural Sciences and Engineering Research Council of Canada, the MIT Martin Family for Sustainability Fellowship, the Herrington Fitch Family Foundation, a NOAA Award #NA14OAR4320158 to The Cooperative Institute for the North Atlantic Region, and a WHOI-Duke Fellowship through the WHOI Marine Mammal Center.
    Keywords: Gait change ; Compensation ; DTAG ; Buoyancy ; Drag
    Repository Name: Woods Hole Open Access Server
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  • 9
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    Victims or vectors : a survey of marine vertebrate zoonoses from coastal waters of the Northwest Atlantic (2011)
    Inter-Research
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    Publication Date: 2022-05-26
    Description: Author Posting. © Inter-Research, 2008. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Diseases of Aquatic Organisms 81 (2008): 13-38, doi:10.3354/dao01936.
    Description: Surveillance of zoonotic pathogens in marine birds and mammals in the Northwest Atlantic revealed a diversity of zoonotic agents. We found amplicons to sequences from Brucella spp., Leptospira spp., Giardia spp. and Cryptosporidium spp. in both marine mammals and birds. Avian influenza was detected in a harp seal and a herring gull. Routine aerobic and anaerobic culture showed a broad range of bacteria resistant to multiple antibiotics. Of 1460 isolates, 797 were tested for resistance, and 468 were resistant to one or more anti-microbials. 73% (341/468) were resistant to 1–4 drugs and 27% (128/468) resistant to 5–13 drugs. The high prevalence of resistance suggests that many of these isolates could have been acquired from medical and agricultural sources and inter-microbial gene transfer. Combining birds and mammals, 45% (63/141) of stranded and 8% (2/26) of by-caught animals in this study exhibited histopathological and/or gross pathological findings associated with the presence of these pathogens. Our findings indicate that marine mammals and birds in the Northwest Atlantic are reservoirs for potentially zoonotic pathogens, which they may transmit to beachgoers, fishermen and wildlife health personnel. Conversely, zoonotic pathogens found in marine vertebrates may have been acquired via contamination of coastal waters by sewage, run-off and agricultural and medical waste. In either case these animals are not limited by political boundaries and are therefore important indicators of regional and global ocean health.
    Description: This paper is a result of research funded by the National Oceanic and Atmospheric Administration (NOAA) Coastal Ocean Program under award NA05NOS4781247, the NOAA John H. Prescott Program NA05NMF4391165 and NAO6NMF4390130, and the International Fund for Animal Welfare to the Woods Hole Oceanographic Institution. Support was also provided by awards NSF OCE-0430724 and NIEHS P50ES012742 to the Woods Hole Center for Ocean and Human Health.
    Keywords: Zoonosis ; Vertebrate ; Northwest Atlantic ; Pinniped ; Cetacean ; Bird
    Repository Name: Woods Hole Open Access Server
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  • 10
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    Molecular characterization of Giardia intestinalis haplotypes in marine animals : variation and zoonotic potential (2011)
    Inter-Research
    Details
    Publication Date: 2022-05-26
    Description: Author Posting. © Inter-Research, 2008. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Diseases of Aquatic Organisms 81 (2008): 39-51, doi:10.3354/dao01931.
    Description: Giardia intestinalis is a microbial eukaryotic parasite that causes diarrheal disease in humans and other vertebrates worldwide. The negative effect on quality of life and economics caused by G. intestinalis may be increased by its potential status as a zoonosis, or a disease that can be transmitted from animals to humans. The zoonotic potential of G. intestinalis has been implied for over 2 decades, with human-infecting genotypes (belonging to the 2 major subgroups, Assemblages A and B) occurring in wildlife and domesticated animals. There are recent reports of G. intestinalis in shellfish, seals, sea lions and whales, suggesting that marine animals are also potential reservoirs of human disease. However, the prevalence, genetic diversity and effect of G. intestinalis in marine environments and the role that marine animals play in transmission of this parasite to humans are relatively unexplored. Here, we provide the first thorough molecular characterization of G. intestinalis in marine vertebrates. Using a multi-locus sequencing approach, we identify human-infecting G. intestinalis haplotypes of both Assemblages A and B in the fecal material of dolphins, porpoises, seals, herring gulls Larus argentatus, common eiders Somateria mollissima and a thresher shark Alopias vulpinus. Our results indicate that G. intestinalis is prevalent in marine ecosystems, and a wide range of marine hosts capable of harboring zoonotic forms of this parasite exist. The presence of G. intestinalis in marine ecosystems raises concerns about how this disease might be transmitted among different host species.
    Description: This paper is a result of research funded under the following awards: NOAA Coastal Ocean Program award no. NA05NOS4781247, the NOAA Prescott Program award no. NA06NMF4390130, the COHH award no. NIEHS P50ES012742, and the National Science Foundation OCE award no. 0430724 given to Woods Hole Oceanographic Institution, Woods Hole, Massachusetts and the National Institutes of Health award no. AI0580C4 ‘Molecular Evolution of Eukaryotes,’ given to the Marine Biological Laboratory, Woods Hole.
    Keywords: Giardia intestinalis ; Zoonosis ; Marine birds ; Marine mammals ; Thresher shark
    Repository Name: Woods Hole Open Access Server
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