Timing of Mineral Sequestration in Leg Bones of White-tailed Ptarmigan

Larison, James R.; Crock, J.G.; Snow, Christine M.

doi:10.1642/0004-8038(2001)118[1057:tomsil]2.0.co;2

Cited by 13 publications

(7 citation statements)

References 17 publications

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“…2005). Many essential minerals can also be stored for later use (Klasing 1998) and female white‐tailed ptarmigans Lagopus leucurus accumulate extra calcium in their leg bones several weeks prior to breeding, most likely as a response to the elevated calcium demand associated with egg formation (Larison, Crock & Snow 2001).…”

Section: Non‐energetic Mediators Of Carry‐over Effectsmentioning

confidence: 99%

“…This causes several downstream effects including reduced male fertility, reduced hatching success (Dauwe et al 2004) and reduced immunocompetence in females (Snoeijs et al 2005). Many essential minerals can also be stored for later use (Klasing 1998) and female white-tailed ptarmigans Lagopus leucurus accumulate extra calcium in their leg bones several weeks prior to breeding, most likely as a response to the elevated calcium demand associated with egg formation (Larison, Crock & Snow 2001).…”

Section: I N E R a L Smentioning

confidence: 99%

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Carry-over effects as drivers of fitness differences in animals

Harrison

Blount

Inger

et al. 2010

Journal of Animal Ecology

715

785

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Summary1. Carry-over effects occur when processes in one season influence the success of an individual in the following season. This phenomenon has the potential to explain a large amount of variation in individual fitness, but so far has only been described in a limited number of species. This is largely due to difficulties associated with tracking individuals between periods of the annual cycle, but also because of a lack of research specifically designed to examine hypotheses related to carry-over effects. 2. We review the known mechanisms that drive carry-over effects, most notably macronutrient supply, and highlight the types of life histories and ecological situations where we would expect them to most often occur. We also identify a number of other potential mechanisms that require investigation, including micronutrients such as antioxidants. 3. We propose a series of experiments designed to estimate the relative contributions of extrinsic and intrinsic quality effects in the pre-breeding season, which in turn will allow an accurate estimation of the magnitude of carry-over effects. To date this has proven immensely difficult, and we hope that the experimental frameworks described here will stimulate new avenues of research vital to advancing our understanding of how carry-over effects can shape animal life histories. 4. We also explore the potential of state-dependent modelling as a tool for investigating carry-over effects, most notably for its ability to calculate optimal rates of acquisition of a multitude of resources over the course of the annual cycle, and also because it allows us to vary the strength of density-dependent relationships which can alter the magnitude of carry-over effects in either a synergistic or agonistic fashion. 5. In conclusion carry-over effects are likely to be far more widespread than currently indicated, and they are likely to be driven by a multitude of factors including both macro-and micronutrients. For this reason they could feasibly be responsible for a large amount of the observed variation in performance among individuals, and consequently warrant a wealth of new research designed specifically to decompose components of variation in fitness attributes related to processes across and within seasons.

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Section: Non‐energetic Mediators Of Carry‐over Effectsmentioning

confidence: 99%

Section: I N E R a L Smentioning

confidence: 99%

Carry-over effects as drivers of fitness differences in animals

Harrison

Blount

Inger

et al. 2010

Journal of Animal Ecology

715

785

View full text Add to dashboard Cite

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“…Cyclic osteoporosis can also occur in female birds prior to egg production, to provide a calcium source for the eggshell (e.g. Raveling et al 1978;Larison et al 2001). Waterfowl undergo an annual simultaneous flight feather moult, which renders them flightless for approximately 3-4 weeks (Owen and Ogilvie 1979).…”

Section: Introductionmentioning

confidence: 99%

Indications of phenotypic plasticity in moulting birds: captive geese reveal adaptive changes in mineralisation of their long bones during wing moult

et al. 2011

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Bone is continually undergoing cycles of apposition and resorption referred to as adaptive remodelling. We tested the hypothesis that captive moulting Barnacle Geese (Branta leucopsis) would show adaptive bone mineralisation during the flightless period of their annual flight feather moult, despite having never flown. The three leg bones showed selective changes in mineralisation in terms of mass and mineral content, while the wing bones did not change in mass or mineral content. The tibia/fibula was the only bone to also undergo significant changes in mass, increasing as moult progressed then decreasing significantly towards the end of moult. This was not a response to changing body mass. Instead, we propose that this is a response to the requirement for increased strength brought about by the significant increase in the force producing muscles that attach to the tibia. The femur and tarsometarsus showed the opposite trend, with mineral content decreasing significantly during mid-moult before increasing again at the end. These changes were also independent of changing body mass, suggesting instead that the calcium, or rather calcium derivatives, were mobilised for feather regrowth. This study demonstrates significant and selective adaptive natural changes in bone mass and mineralization that have not been previously demonstrated. That they should also occur in captive birds which show a decrease in locomotion during the wing moult period, suggests a high endogenous capacity for these changes. ZusammenfassungKnochengewebe macht fortwäh-rende Zyklen von Aufbau und Abbau durch, die als adaptive Remodellierung bezeichnet werden. Wir haben die Hypothese getestet, dass in Gefangenschaft gehaltene mausernde Weißwangengänse (Branta leucopsis) während der flugunfähigen Phase ihrer jährlichen Flugfedermauser adaptive Knochenmineralisation zeigen, obwohl sie niemals geflogen sind. Die drei Beinknochen zeigten selektive Veränderungen der Mineralisation bezüglich Masse und Mineralgehalt, während sich Masse und Mineralgehalt der Flügelknochen nicht änderten. Der Unterschenkelknochen war der einzige Knochen, der auch eine signifikante Ä nderung seiner Gesamtmasse erfuhr, die im Verlauf der Mauser zunächst anstieg und dann zum Ende der Mauser hin abnahm. Dies war nicht auf Veränderungen der Kör-permasse zurückzuführen. Stattdessen schlagen wir vor, dass es damit zusammenhängt, dass dieser Knochen stabiler werden muss, da sich die am Schienbein ansetzenden Kraft produzierenden Muskeln vergrößern. Oberschenkel

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“…The same elemental constitution and content of the eggshell may show the nutritional condition of the female pheasants, and also show the quality index of the surrounding environment (Li et al, 1990;Chang et al, 2001;Larison et al, 2001). There are 21 elements in the eggshell of the Reeve's pheasant.…”

Section: Discussionmentioning

confidence: 99%

“…Chemical components in eggshells, especially some essential elements, are not only closely connected with the development of the embryo, but also reflect the status of female nutrition and environmental contamination. Since some heavy metal elements in eggshells can indirectly reflect the habitat quality of birds, detecting and analyzing the chemical components of eggshells has become one of the focuses for scientists in recent years (Li et al, 1990;Chang et al, 2001;Larison et al, 2001;Tilgar et al, 2002;Cusack et al, 2003 Conservation of Nature and Natural Resources) vulnerable species and CITES (Convention on International Trade in Endangered Species) appendix I species, due to their small population in the wild. It has been recommended to be added to the China National Class I protected animal list in the China Red Data Book of Endangered Animals (Aves) (Zheng and Wang, 1997), in consideration of its decreasing range and population in the country compared with other animals in the list of Class I (Zheng and Wang, 1997).…”

Section: Introductionmentioning

confidence: 99%

Ultrastructure and elemental composition of the eggshell of Reeve’s pheasant (Syrmaticus reevesii)

et al. 2007

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The eggshell of Reeve's pheasant (Syrmaticus reevesii) collected from the Dongzhai National Nature Reserve in Henan Province, China was studied. By using scanning electron microscopy and inductively coupled plasma (ICP) spectrometry, the ultrastructure and elemental composition of the eggshell was determined. The study showed that the average thickness of the surface layer of crystals, the palisade and cone layer, and the eggshell membrane were 20.8, 220.8 and 62.5 μm, respectively, accounting for 6.8%, 72.6% and 20.6% of the total thickness of the eggshell. There were many vesicular holes in the palisade layer with an average diameter of 0.32P0.08 μm (n = 30). The function of these holes might be significant to air exchange. The shape of the eggshell pore on the surface layer of crystals is round or elliptical. The fracture surface of the pore is funnel-shaped. Some granules filled the upper part of the eggshell pores. The content of 21 elements in the eggshell of wild and captive Reeve's pheasants was compared and presented. It indicated that among the elements that made up the eggshell of the wild pheasant, the content of Ca, Mg, P and S was much higher, ω>1 mg/g, with ω (Ca) being higher than 40% of the eggshell. The contents of Na, Si, Sr, K and Al were ω=0.1-1 mg/g, while Fe, Zn, Pb, Mn, Cu, V and Ti had lower concentrations (ω = 1-100 μg/g). The ω of Ni, Cr, Co, Se, Cd were lower than 1 μg/g. The elemental composition in the eggshell of the captive Reeve's pheasant kept in the Dongzhai National Natural Reserve was significantly different from that of the wild species, with a difference of over 20% on S, Cu, Fe, Al, Mn, Si, Sr, Se and Cr. The lower intake of Fe, Mn, Si and Sr on the one hand and the higher intake of S, Cu, Al and Cr on the other hand might be responsible for the low fertility of captive Reeve's pheasants in the Dongzhai National Nature Reserve. In order to ensure that the pheasants are receiving the proper amount of nutrition and to improve their breeding success, the amount of certain elements in the food should be adjusted.

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Timing of Mineral Sequestration in Leg Bones of White-tailed Ptarmigan

Cited by 13 publications

References 17 publications

Carry-over effects as drivers of fitness differences in animals

Carry-over effects as drivers of fitness differences in animals

Indications of phenotypic plasticity in moulting birds: captive geese reveal adaptive changes in mineralisation of their long bones during wing moult

Ultrastructure and elemental composition of the eggshell of Reeve’s pheasant (Syrmaticus reevesii)

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