Point-of-care blood analyzers measure the nutritional state of eighteen free-living bird species

Morales, Ana; Frei, Barbara; Leung, Casey; Titman, Rodger D.; Whelan, Shannon; Benowitz-Fredericks, Z Morgan; Elliott, Kyle H.

doi:10.1016/j.cbpa.2019.110594

Cited by 21 publications

(23 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Plasma glucose measures are higher in birds in good body condition (as measured by mass) (Remage‐Healey & Romero, 2001; Lill, 2011). For example, black‐legged kittiwakes ( Rissa tridactyla ) that were given additional food supplementing their natural diet had higher glucose levels than those just foraging naturally (Morales et al, 2020). Plasma glucose measures may offer additional insight into the body condition of seabirds, but they are not a reliable indicator on their own as they may be influenced rapidly by acute stressors (Mondal et al, 2011).…”

Section: Plumagementioning

confidence: 99%

“…non‐esterified fatty acids), which can also be monitored in plasma samples, and at a critical state (near starvation) will rapidly decrease as triglycerides are exhausted (Robin et al, 1988; Castellini & Rea, 1992; Cherel et al, 1994). β‐Hydroxybutyrate levels in supplementarily fed black‐legged kittiwakes were lower than those in naturally foraging birds (Morales et al, 2020). In gull‐billed tern ( Gelochelidon nilotica ) chicks, measures of plasma triglycerides had a strong correlation with growth rates and enabled accurate predictive modelling of growth from a single sample (Albano et al, 2011b).…”

Section: Plumagementioning

confidence: 99%

See 1 more Smart Citation

Accessible ecophysiological tools for seabird conservation

Whitehead

Dunphy

2022

Aquatic Conservation

View full text Add to dashboard Cite

1. Seabirds are the most endangered avian taxa on Earth, with over a third of species globally threatened. To help slow their decline, conservation physiology seeks to determine how seabird responses to climatic and anthropogenic threats influence demographic processes, but it is not widely utilized in monitoring.2. A wide variety of metrics and methods are available to the conservation practitioner; thus, the correct method selection is paramount. This is a review of physiological tools to assess both individual and population health in seabirds, outlining which tools could be accessible enough to incorporate into conservation management strategies to increase the efficacy and range of population monitoring.3. Ultimately, the cost and expertise required limits the use of some tools in a community-based management context, but they are useful in academic research in collaboration with conservation projects to generate data to inform management strategies for threatened species.4. The value of the data available from particular tools is weighed against the invasiveness of the methodology to assess the practicality of incorporating physiological tools into routine seabird monitoring programmes. 5. A broader application of conservation physiology tools in a monitoring context could help manage threatened species; this paper summarizes a set of physiological variables from minimally invasive samples that have potential to assist in monitoring population health for seabird conservation. The full potential of these physiological tools is yet to be realized in seabirds.

show abstract

Section: Plumagementioning

confidence: 99%

Section: Plumagementioning

confidence: 99%

Accessible ecophysiological tools for seabird conservation

Whitehead

Dunphy

2022

Aquatic Conservation

View full text Add to dashboard Cite

show abstract

“…The authors find an ingested plastic link with growth, calcium, uric acid, and cholesterol chemistry, interpreting presence of any ingested plastic to elicit varied toxicological/pathological effects, but does not fully consider alternative explanations. Reduced growth, reduced calcium, increased uric acid, , and increased cholesterol are normal biochemical responses indicating nutritional state and/or fasting phases in birds (see Alonso-Alvarez and Ferrer (2001) and Morales et al (2020)). , The pattern of clinical chemistry and pathology described by Lavers et al (2019) is highly compatible with malnutrition, and not necessarily due to a toxicological effect of ingested plastic. While fasting is discussed, it is not properly considered, both because mean total protein concentration was higher than a starvation indicator for parrots and because total protein was not correlated with plastic.…”

Section: Confounding: Are There Hidden Hands Between Plastic and Resp...mentioning

confidence: 99%

“…21 The authors find an ingested plastic link with growth, calcium, uric acid, and cholesterol chemistry, interpreting presence of any ingested plastic to elicit varied toxicological/pathological effects, but does not fully consider alternative explanations. Reduced growth, 22 reduced calcium, 23 increased uric acid, 24,25 and increased cholesterol 26 2020)). 26,27 The pattern of clinical chemistry and pathology described by Lavers et al ( 2019) is highly compatible with malnutrition, and not necessarily due to a toxicological effect of ingested plastic.…”

mentioning

confidence: 99%

“…Reduced growth, 22 reduced calcium, 23 increased uric acid, 24,25 and increased cholesterol 26 2020)). 26,27 The pattern of clinical chemistry and pathology described by Lavers et al ( 2019) is highly compatible with malnutrition, and not necessarily due to a toxicological effect of ingested plastic. While fasting is discussed, it is not properly considered, both because mean total protein concentration was higher than a starvation indicator for parrots and because total protein was not correlated with plastic.…”

mentioning

confidence: 99%

See 1 more Smart Citation

The Need for Attention to Confirmation Bias and Confounding in the Field of Plastic Pollution and Wildlife Impacts: Comment on “Clinical Pathology of Plastic Ingestion in Marine Birds and Relationships with Blood Chemistry”

Roman

Gilardi

Lowenstine

et al. 2020

Environ. Sci. Technol.

View full text Add to dashboard Cite

Lower nutritional state and foraging success in an Arctic seabird despite behaviorally flexible responses to environmental change

Eby

Patterson

Sorenson

et al. 2023

Ecology and Evolution

Self Cite

View full text Add to dashboard Cite

The degree to which individuals adjust foraging behavior in response to environmental variability can impact foraging success, leading to downstream impacts on fitness and population dynamics. We examined the foraging flexibility, average daily energy expenditure, and foraging success of an ice-associated Arctic seabird, the thickbilled murre (Uria lomvia) in response to broad-scale environmental conditions at two different-sized, low Arctic colonies located <300 km apart. First, we compared foraging behavior (measured via GPS units), average daily energy expenditure (estimated from GPS derived activity budgets), and foraging success (nutritional state measured via nutritional biomarkers pre-and post-GPS deployment) of murres at two colonies, which differ greatly in size: 30,000 pairs breed on Coats Island, Nunavut, and 400,000 pairs breed on Digges Island, Nunavut. Second, we tested whether colony size within the same marine ecosystem altered foraging behavior in response to broad-scale environmental variability. Third, we tested whether environmentally induced foraging flexibility influenced the foraging success of murres. Murres at the larger colony foraged farther and longer but made fewer trips, resulting in a lower nutritional state and lower foraging success compared to birds at the smaller colony. Foraging behavior and foraging success varied in response to environmental variation, with murres at both colonies making longer, more distant foraging trips in high ice regimes during incubation, suggesting flexibility in responding to environmental variability. However, only birds at the larger colony showed this same flexibility during chick rearing. Foraging success at both colonies was higher during high ice regimes, suggesting greater prey availability. Overall, murres from the larger colony exhibited lower foraging success, and their foraging behavior showed stronger responses to changes in broad-scale conditions such as sea ice regime. Taken together, this suggests that larger Arctic seabird colonies have higher behavioral and demographic sensitivity to environmental change.

show abstract

Point-of-care blood analyzers measure the nutritional state of eighteen free-living bird species

Cited by 21 publications

References 35 publications

Accessible ecophysiological tools for seabird conservation

Accessible ecophysiological tools for seabird conservation

The Need for Attention to Confirmation Bias and Confounding in the Field of Plastic Pollution and Wildlife Impacts: Comment on “Clinical Pathology of Plastic Ingestion in Marine Birds and Relationships with Blood Chemistry”

Lower nutritional state and foraging success in an Arctic seabird despite behaviorally flexible responses to environmental change

Contact Info

Product

Resources

About