Health and Environmental Risk Assessment Project for bottlenose dolphins Tursiops truncatus from the southeastern USA. I. Infectious diseases

Bossart, Gregory D.; Fair, Patricia A.; Schaefer, Adam M.; Reif, John S.

doi:10.3354/dao03142

Cited by 29 publications

(39 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The most common fungi associated with mucormycosis are Mucor spp., Rhizopus spp., Rhizomucor spp., Absidia spp., Aphophysomyces spp., and Saksenaea spp. (Abdo et al, 2012;Bossart et al, 2017;Higgins, 2000). All are distributed worldwide and typically associated with soil and detritus.…”

Section: Fungimentioning

confidence: 99%

Cetacea

Leger

Raverty

Mena

2018

Pathology of Wildlife and Zoo Animals

View full text Add to dashboard Cite

Section: Fungimentioning

confidence: 99%

Cetacea

Leger

Raverty

Mena

2018

Pathology of Wildlife and Zoo Animals

View full text Add to dashboard Cite

“…Mercury concentrations in the blood and skin of IRL dolphins were extremely high, approximately five times higher than those in CHS dolphins. Higher exposure to many pathogens (e.g., morbillivirus and lobomycosis) was also observed for the IRL dolphins (34).…”

Section: Historical Perspectivementioning

confidence: 71%

“…In 2003, the Health and Environmental Risk Assessment (HERA) population monitoring project was initiated for bottlenose dolphins in the Indian River Lagoon, Florida (IRL), and waters surrounding Charleston, South Carolina (CHS) (42). For both the IRL and CHS field sites, health assessments were conducted to establish baseline data and to compare morbidity temporally and across two geographic sites (34,43). Higher concentrations of persistent organic pollutants (POPs) including legacy [e.g., dichlorodiphenyltrichloroethanes (DDTs), polychlorinated biphenyls (PCBs)] as well as "emerging" contaminants [polybrominated diphenyl ethers (PBDEs) and perfluorooctane sulfonate (PFOS) compounds] were detected in CHS dolphins as compared to IRL dolphins (43,44).…”

Section: Historical Perspectivementioning

confidence: 99%

Health Assessments of Common Bottlenose Dolphins (Tursiops truncatus): Past, Present, and Potential Conservation Applications

et al. 2019

View full text Add to dashboard Cite

The common bottlenose dolphin (Tursiops truncatus) is a global marine mammal species for which some populations, due to their coastal accessibility, have been monitored diligently by scientists for decades. Health assessment examinations have developed a comprehensive knowledge base of dolphin biology, population structure, and environmental or anthropogenic stressors affecting their dynamics. Bottlenose dolphin health assessments initially started as stock assessments prior to acquisition. Over the last four decades, health assessments have evolved into essential conservation management tools of free-ranging dolphin populations. Baseline data enable comparison of stressors between geographic locations and associated changes in individual and population health status. In addition, long-term monitoring provides opportunities for insights into population shifts over time, with retrospective application of novel diagnostic tests on archived samples. Expanding scientific knowledge enables effective long-term conservation management strategies by facilitating informed decision making and improving social understanding of the anthropogenic effects. The ability to use bottlenose dolphins as a model for studying marine mammal health has been pivotal in our understanding of anthropogenic effects on multiple marine mammal species. Future studies aim to build on current knowledge to influence management decisions and species conservation. This paper reviews the historical approaches to dolphin health assessments, present day achievements, and development of future conservation goals.

show abstract

“…Dolphins in the southern lagoon have the highest prevalence of boat-injuries, which results in dorsal fin disfigurement, disproportional to other sub-basins [101] and may account for some of the variability between sub-basins. On the contrary, much of the northern Banana River prohibits motorized vessels and is also further restricted to limited authorized personnel (no public usage) [102], thereby excluding anthropogenic activities (entanglement, vessel strikes and capture-release activities for dolphin health assessment) that may influence dorsal fin marking [8, 101, 103]. Detection probability ranged from 0.20 to 0.42 between secondary sessions which fell within recommended bounds of effective capture-recapture survey designs (0.2 - 0.3) [48].…”

Section: Discussionmentioning

confidence: 99%

Robust design capture-recapture analysis of abundance and demographic parameters of Indian River Lagoon common bottlenose dolphins (Tursiops truncatus truncatus)

Durden

Stolen

Moreland

et al. 2020

Preprint

View full text Add to dashboard Cite

Accurate estimates of abundance are critical to species management and conservation. Common bottlenose dolphins (Tursiops truncatus truncatus) inhabiting the Indian River Lagoon (IRL) estuarine system along the east coast of Florida are impacted by anthropogenic activities and have had multiple unexplained mortality events, necessitating precise estimates of demographic and abundance parameters to implement management strategies. Mark-recapture methodology following a Robust Design survey was used to estimate abundance, adult survival, and temporary emigration for the IRL estuarine system stock of bottlenose dolphins. Models included a parameter (time since first capture) to assess evidence for transient individuals. Boat-based photo-identification surveys (n = 135) were conducted along predetermined contour and transect lines throughout the entire IRL (2016-2017). The best fitting model included the “transient” parameter to survival, allowed survival to vary by primary period, detection to vary by secondary session, and did not allow temporary emigration. Dolphin abundance ranged from 981 (95% CI: 882-1,090) in winter to 1,078 (95% CI: 968-1,201) in summer with a mean of 1,032 (95% CI: 969 -1,098). Model averaged seasonal survival rate for marked residents ranged from 0.85-1.00. Capture probability ranged from 0.20 to 0.42 during secondary sessions and transient rate from 0.06 to 0.07. This study represents the first Robust design mark-recapture survey effort to estimate abundance for IRL dolphins and provides parameter estimates to optimize sampling design of future studies. Transients included individuals with home ranges extending north of the IRL requiring further assessment of stock delineation. Results were remarkably similar to prior abundance estimates resulting from line-transect aerial surveys and were consistent with a stable population. Data will enable managers to evaluate the impact of fisheries-related takes as well as enable future comparisons of demographic parameters for a dolphin population that continues to sustain large scale mortality events and anthropogenic impacts.

show abstract

Health and Environmental Risk Assessment Project for bottlenose dolphins Tursiops truncatus from the southeastern USA. I. Infectious diseases

Cited by 29 publications

References 53 publications

Cetacea

Cetacea

Health Assessments of Common Bottlenose Dolphins (Tursiops truncatus): Past, Present, and Potential Conservation Applications

Robust design capture-recapture analysis of abundance and demographic parameters of Indian River Lagoon common bottlenose dolphins (Tursiops truncatus truncatus)

Contact Info

Product

Resources

About