Microhabitat variables explain patch switching by wintering Bewick's swans through giving-up net energy intake rates.

08:00 EDT 23rd March 2020 | BioPortfolio

Summary of "Microhabitat variables explain patch switching by wintering Bewick's swans through giving-up net energy intake rates."

Microhabitat variables are determinants for animals to select forage patches and evaluate the cost/benefit tradeoffs of habitat switching. Optimal foragers would weigh habitat quality by giving-up net energy intake rate (GUN), which includes the energy intake rate and cost rate. The GUNs, energy intake rate, and cost rate can be influenced by variations in different microhabitat factors and interactive effects. In this study, we assessed the GUN patterns of wintering Bewick's swans and the effects of microhabitat factors on their foraging strategy in three different habitats: foxnut ponds, paddy fields, and shallow lake. The foraging behaviors and microhabitat variables of the swans were investigated during the winters of 2016-2018 and 2017/2018 at Huangpi and Shengjin Lakes in Anhui Province, southeastern China. The results showed that the percentage of disturbance time and the giving-up food density in shallow water had significant negative effects on GUNs. In contrast, water depth and the giving-up food density in deep water showed positive effects on GUNs. GUNs were significantly different among the three habitats. GUNs also decreased as winter progressed. Swans would decrease their GUNs under unfavorable foraging conditions such as more disturbances; however, GUNs would increase with water depth and food availability in patches with deep water. The swans demonstrated diverse GUN patterns in different foraging habitats, driven by the tradeoffs between energy intake rates and energy cost rates that were influenced by microhabitat variables. It implies that waterbirds exposed to decreasing GUNs may mitigate energy demand and environmental stress by switching foraging habitat while in subprime foraging habitat if alternative habitats that offered higher net rates of energy gain were available.


Journal Details

This article was published in the following journal.

Name: Environmental science and pollution research international
ISSN: 1614-7499


DeepDyve research library

PubMed Articles [5166 Associated PubMed Articles listed on BioPortfolio]

Electrical Switching of Tristate Antiferromagnetic Néel Order in α-Fe_{2}O_{3} Epitaxial Films.

We demonstrate nondecaying, steplike electrical switching of tristate Néel order in Pt/α-Fe_{2}O_{3} bilayers detected by the spin-Hall induced anomalous Hall effect. The as-grown Pt/α-Fe_{2}O_{3} ...

Physicians' perspectives regarding non-medical switching of prescription medications: Results of an internet e-survey.

Physicians are in an ideal position to describe the impact of medication non-medical switching (switching commonly due to formulary changes by insurer for reasons unrelated to patient health) on their...

Prescription switching: rationales and risks.

Therapeutic drug switching is commonplace across a broad range of indications and, within a drug class, is often facilitated by the availability of multiple drugs considered equivalent. Such treatment...

Comparison of a transdermal contraceptive patch with a newly sourced adhesive component versus EVRA patch: A double-blind, randomized, bioequivalence and adhesion study in healthy women.

To evaluate the bioequivalence of norelgestromin and ethinyl estradiol (NGMN-EE) and adhesion of a transdermal contraceptive patch containing a newly sourced adhesive component (test) compared with th...

Mechanism of Néel Order Switching in Antiferromagnetic Thin Films Revealed by Magnetotransport and Direct Imaging.

We probe the current-induced magnetic switching of insulating antiferromagnet-heavy-metal systems, by electrical spin Hall magnetoresistance measurements and direct imaging, identifying a reversal occ...

Clinical Trials [2994 Associated Clinical Trials listed on BioPortfolio]

An Exploratory Study Investigating Adhesive Reaction to Output

The objective is to investigate the impact that faecal output has on adhesives.

Treatment to Quit Smoking

This protocol evaluates the efficacy of combining pharmacologic treatments for smoking cessation, entailing the use of the nicotine skin patch with the nicotinic antagonist mecamylamine, ...

Photoirritation and Photoallergic Potential of a New Nicotine Patch

An evaluation of the effects of UV exposure following the use of a new nicotine patch.

The Role of Nicotine Dose and Route of Delivery in Affecting Adoption of E-cigarettes and Reducing Exposure to Toxic Combustion Products

This study plans to investigate whether using electronic cigarettes (e-cigarettes) or skin patches containing nicotine affects switching from smoking conventional combustible (burning) cig...

Pharmacokinetic Study of Lidocaine Patch 1.8% Lidocaine Patch 5% (Lidoderm®) in Healthy Subjects

The purpose of this study is to characterize the comparative single-dose pharmacokinetics (bioequivalence) of lidocaine patch 1.8% (investigational product) versus Lidoderm® (lidocaine pa...

Medical and Biotech [MESH] Definitions

An electrophysiologic technique for studying cells, cell membranes, and occasionally isolated organelles. All patch-clamp methods rely on a very high-resistance seal between a micropipette and a membrane; the seal is usually attained by gentle suction. The four most common variants include on-cell patch, inside-out patch, outside-out patch, and whole-cell clamp. Patch-clamp methods are commonly used to voltage clamp, that is control the voltage across the membrane and measure current flow, but current-clamp methods, in which the current is controlled and the voltage is measured, are also used.

A medicated adhesive patch placed on the skin to deliver a specific dose of medication into the bloodstream.

Skin tests in which the sensitizer is applied to a patch of cotton cloth or gauze held in place for approximately 48-72 hours. It is used for the elicitation of a contact hypersensitivity reaction.

Gene rearrangement of the B-lymphocyte which results in a substitution in the type of heavy-chain constant region that is expressed. This allows the effector response to change while the antigen binding specificity (variable region) remains the same. The majority of class switching occurs by a DNA recombination event but it also can take place at the level of RNA processing.

Assessment of physiological capacities in relation to job requirements. It is usually done by measuring certain physiological (e.g., circulatory and respiratory) variables during a gradually increasing workload until specific limitations occur with respect to those variables.

Quick Search

DeepDyve research library

Relevant Topics

Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...

Mental Health
Adhd Anorexia Depression Dyslexia Mental Health Psychiatry Schizophrenia Stress Mental health, although not being as obvious as physical health, is very important, causing great unhappiness to those affected, causing add...

Searches Linking to this Article