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Keywords: Lipid
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Journal Articles
J Exp Biol (2021) 224 (3): jeb230615.
Published: 08 February 2021
... amino acids and lipids (lecithin), we show that adult worker honeybees actively regulate their intake of lipids around optimal values relative to the amount of protein in their diet. We found that broodless, nurse-age worker honeybees consume foods to achieve a ratio between 1:2 and 1:3 for essential...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (8): jeb216135.
Published: 16 April 2020
...-induced hormone that mediates invertebrate physiology and behavior, influences the health of young nurse-aged bees. Specifically, we asked whether octopamine induces abdominal lipid and hypopharyngeal gland (HG) degradation, two physiological traits of stressed nurse bees. Nurse-aged workers were treated...
Journal Articles
J Exp Biol (2018) 221 (Suppl_1): jeb161521.
Published: 07 March 2018
... - 225 . New York : Springer . Bell , G. , Raynard , R. S. and Sargent , J. R. ( 1991a ). The effect of dietary linoleic acid on the fatty acid composition of individual phospholipid and lipoxygenase products from gills and leucocytes of Atlantic salmon (Salmo salar) . Lipids 26...
Journal Articles
J Exp Biol (2018) 221 (Suppl_1): jeb161836.
Published: 07 March 2018
...; together with low temperatures, this means that lipid stores are likely to be consumed predominantly in the autumn and spring, when temperatures are higher but insects remain dormant. Although there is ample evidence for a shift towards less-saturated lipids in overwintering insects, switches between...
Journal Articles
J Exp Biol (2016) 219 (16): 2458–2468.
Published: 15 August 2016
...Patrick Miller; Tomoko Narazaki; Saana Isojunno; Kagari Aoki; Sophie Smout; Katsufumi Sato ABSTRACT Diving lung volume and tissue density, reflecting lipid store volume, are important physiological parameters that have only been estimated for a few breath-hold diving species. We fitted 12 northern...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (7): 949–959.
Published: 01 April 2016
... (either <24 h or 7 days old), then flash-frozen in liquid nitrogen. The tissue was used for measuring glycogen and triglycerides. Glycogen is the major carbohydrate reserve and triglycerides constitute the primary (∼90%) form of stored lipids in the fat body ( Arrese and Wells, 1997 ). Glycogen...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (3): 419–430.
Published: 01 February 2016
...Adrian A. Smith; Jocelyn G. Millar; Andrew V. Suarez ABSTRACT The lipid mixture that coats the insect cuticle contains a number of chemical signals. Mate choice in solitary insects is mediated by sexually dimorphic cuticular chemistry, whereas in eusocial insects, these profiles provide information...
Includes: Supplementary data
Journal Articles
J Exp Biol (2014) 217 (9): 1580–1587.
Published: 01 May 2014
..., but are not accumulated, likely because they have lower energy density than lcTAGs. Here we report that acTAGs comprise 36% of the neutral lipid pool of overwintering prepupae of the goldenrod gall fly, Eurosta solidaginis , while only 17% of the neutral lipid pool is made up of typical lcTAGs. These high concentrations...
Includes: Supplementary data
Journal Articles
J Exp Biol (2012) 215 (16): 2920–2930.
Published: 15 August 2012
... 2012 © 2012. 2012 chronic stress food variability predictability curve-billed thrasher corticosterone energy reserve vasotocin fault bar gluconeogenesis lipid protein glucose The amount of available energy (i.e. food quantity and quality) is a primary limiting factor...
Journal Articles
J Exp Biol (2012) 215 (5): 806–813.
Published: 01 March 2012
...Michael A. De Miranda, Jr; Amber E. Schlater; Todd L. Green; Shane B. Kanatous SUMMARY A key cellular adaptation to diving in Weddell seals is enhanced myoglobin concentrations in their skeletal muscles, which serve to store oxygen to sustain a lipid-based aerobic metabolism. The aim of this study...
Journal Articles
J Exp Biol (2011) 214 (22): 3790–3800.
Published: 15 November 2011
... arising from diet, rather than mobilization from adipose tissue. Discrimination factors were used in combination with a mixing model incorporating FA and lipid concentrations to estimate the diet of eiders fed a binary mixture with contrasting isotopic signatures. Diet estimates varied with FA but mean...
Journal Articles
J Exp Biol (2011) 214 (2): 286–294.
Published: 15 January 2011
... of disadvantages. All exercising mammals share a general pattern of fuel selection: at the same they oxidize the same ratio of lipids to carbohydrates. However, highly aerobic species rely more on intramuscular fuels because energy supply from the circulation is constrained by trans-sarcolemmal transfer. Fuel...
Journal Articles
J Exp Biol (2009) 212 (18): 2934–2940.
Published: 15 September 2009
... 2009 bird lipid exercise migration oxidative enzymes metabolism Migratory flight in birds is an impressive feat of endurance exercise in nature. Recent evidence demonstrates that species such as the bar-tailed godwit ( Limosa lapponica Linnaeus) and probably other shorebirds, can fly...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (12): 1921–1929.
Published: 15 June 2009
... of what appears to be triglyceride droplets. Neutral lipids are often used in facultative waterproofing strategies of amphibians( Lillywhite, 2006 ) and are present as the normal barrier lipids of avian and mammalian stratum corneum( Menon and Menon, 2000 ; Gu et al., 2008 ; Haugen et al., 2003...
Journal Articles
J Exp Biol (2008) 211 (18): 2901–2908.
Published: 15 September 2008
.... There were no changes in annulation spacing, followed in individual nematodes by confocal microscopy, that would account for the permeability slump. Nile Red staining reveals that the surface of the nematode is coated with an extracuticular layer of lipid. This material can be seen in unstained desiccated...
Journal Articles
J Exp Biol (2007) 210 (19): 3440–3450.
Published: 01 October 2007
... for correspondence (e-mail: pelse@uow.edu.au ) 24 7 2007 © The Company of Biologists Limited 2007 2007 fatty acid metabolism lipid mass spectrometry glycerophospholipid reptile mammal endothermy ectothermy The resting metabolic rates of endothermic vertebrates, such as mammals...
Journal Articles
J Exp Biol (2007) 210 (17): 2999–3014.
Published: 01 September 2007
...Fabrice Pernet; Réjean Tremblay; Luc Comeau; Helga Guderley SUMMARY We compared lipid dynamics and the physiological responses of blue mussels Mytilus edulis , a cold-adapted species, and oysters Crassostrea virginica , a warmer-water species, during simulated overwintering and passage to spring...
Journal Articles
J Exp Biol (2006) 209 (14): 2726–2733.
Published: 15 July 2006
... on the surface of the forehead of two harbor porpoises ( Phocoena phocoena ). It has long been hypothesized that the special lipids found in the melon of odontocetes, and not in any other mammals, focus sounds produced in the nasal region that then propagate through the melon, producing a beam...
Journal Articles
J Exp Biol (2006) 209 (13): 2495–2508.
Published: 01 July 2006
...B. Speers-Roesch; Y. K. Ip; J. S. Ballantyne SUMMARY To test the hypothesis that the preference for ketone bodies rather than lipids as oxidative fuel in elasmobranchs evolved in response to the appearance of urea-based osmoregulation, we measured total non-esterified fatty acids (NEFA) in plasma...
Journal Articles
J Exp Biol (2005) 208 (24): 4641–4649.
Published: 15 December 2005
...Amy L. Toth; Sara Kantarovich; Adam F. Meisel; Gene E. Robinson SUMMARY In many social insects, including honey bees, worker energy reserve levels are correlated with task performance in the colony. Honey bee nest workers have abundant stored lipid and protein while foragers are depleted...