A5069262679- Marine animal studies overview
- Arctic and Antarctic ice dynamics
- Arctic and Russian Policy Studies
- Underwater Acoustics Research
- Ocean Acidification Effects and Responses
- Marine and fisheries research
- Animal Vocal Communication and Behavior
- Avian ecology and behavior
- Aerospace Engineering and Energy Systems
- Cryospheric studies and observations
- Ichthyology and Marine Biology
- Mercury impact and mitigation studies
- Animal Behavior and Welfare Studies
- Marine and coastal plant biology
- Identification and Quantification in Food
New England Aquarium
2015-2025
Cabot (United States)
2017-2025
International Fund for Animal Welfare
2019
Naval Undersea Warfare Center
2008
Seventy mortalities of North Atlantic right whales Eubalaena glacialis (NARW) were documented between 2003 and 2018 from Florida, USA, to the Gulf St. Lawrence, Canada. These included 29 adults, 14 juveniles, 10 calves, 17 unknown age class. Females represented 65.5% (19/29) known-sex adults. Fourteen cases had photos only; 56 carcasses received external examinations, 44 which also necropsied. Cause death was determined in 43 cases, 38 (88.4%) due anthropogenic trauma: 22 (57.9%)...
Although trends in reproduction, mortality, and entanglement events have been analyzed for the endangered North Atlantic right whale (Eubalaena glacialis) population, no method has available to assess individual health. Here, we describe a technique assessing health based on evaluation of selected physical parameters from archived photographs whales. A scoring system was developed body skin condition, blowhole cyamids, rake marks over 200 000 photographs. Comparison condition scores females...
Abstract Evaluations of the conservation status endangered North Atlantic right whale as well many other wildlife species often rely extensively on counts and cause‐of‐death determinations carcasses found accidentally or during dedicated surveys. Even when survey effort to a population is extensive, deaths may go unseen. We used an abundance estimation model derive estimates cryptic mortality for whales that observed accounted only 36% all estimated death 1990–2017. strong evidence total...
Abstract North Atlantic right whales frequently become entangled in fishing gear, which can negatively affect their reproductive output and probability of survival. We estimated individual whale health from a hierarchical Bayesian model fit to photographic indices health. reviewed 696 sighted 1980 2011 assigned 1196 entanglement events 573 individuals six categories increasing injury severity monthly median scores (0–100 scale) for the duration life within study period. then quantified...
Body condition is an indicator of health, and it plays a key role in many vital processes for mammalian species. While evidence individual body can be obtained, these observations provide just brief glimpses into the health state animal. An analytical framework needed understanding how animals changes over space time.Through knowledge we better understand status populations. This particularly important endangered species, where consequences disruption critical biological functions push...
Quantifying the cumulative effects of stressors on individuals and populations can inform development effective management conservation strategies. We developed a Bayesian state–space model to assess multiple individual survival reproduction. In model, stressor vital rates are mediated by changes in underlying health, allowing for comparison effect sizes while accounting intrinsic factors that might affect an individual's vulnerability resilience. applied 50‐year dataset sightings, calving...
Body size is key to many life-history processes, including reproduction. Across species, climate change and other stressors have caused reductions in the body which animals can grow, called asymptotic size, with consequences for demography. A reduction mean length was documented critically endangered North Atlantic right whales, parallel declines health vital rates resulting from human activities environmental changes. Here, we tested whether smaller associated lower reproductive output,...
ABSTRACT Fishing gear entanglements can compromise health and lower survival reproductive output of wildlife, which slow population growth or cause declines. However, may go unobserved, making it difficult to quantify their effects on individuals' vital rates a population's trajectory. are leading death for North Atlantic right whales, Eubalaena glacialis , an endangered species whose has declined substantially over the last decade. Key sources observation error have not been addressed when...
Body growth of North Atlantic right whales (Eubalaena glacialis) was described from measurements known-age live and dead individuals to gain insights into the nutritional needs life-history strategies this endangered species. lengths 154 revealed that calves more than doubled in size attained three-fourths asymptotic adult by time they had weaned at 12 months. Calves gained on average ∼1.7 cm ∼34 kg per day while nursing during extremely rapid phase. Mean predicted body mass were 4.2 m 1.1...
Welfare assessments have been largely successful in improving management and quality of life for animals human care. This has prompted an increased interest their use free-ranging wild to assess health, environment, human-induced impacts that influence policy decisions. The North Atlantic Right Whale (NARW, Eubalaena glacialis) is one the most endangered whale species. NARWs constantly face serious injuries mortalities due activities, which poses both a species conservation individual...