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Aalborg, Denmark

Moghadam N.N.,University of Aarhus | Holmstrup M.,University of Aarhus | Manenti T.,University of Aarhus | Mouridsen M.B.,University of Aarhus | And 3 more authors.

The contribution of insect fat body to multiple processes, such as development, metamorphosis, activity, and reproduction results in trade-offs between life history traits. In the present study, age-induced modulation of storage lipid composition in Drosophila melanogaster longevity-selected (L) and non-selected control (C) lines was studied and the correlation between total body fat mass and lifespan assessed. The trade-offs between fecundity, locomotor activity, and lifespan were re-evaluated from a lipid-related metabolic perspective. Fewer storage lipids in the L lines compared to the C lines supports the impact of body fat mass on extended lifespan. The higher rate of fecundity and locomotor activity in the L lines may increase the lipid metabolism and enhance the lipolysis of storage lipids, reducing fat reserves. The correlation between neutral lipid fatty acids and fecundity, as well as locomotor activity, varied across age groups and between the L and C lines. The fatty acids that correlated with egg production were different from the fatty acids that correlated with locomotor activity. The present study suggests that fecundity and locomotor activity may positively affect the lifespan of D. melanogaster through the inhibition of fat accumulation. © 2015 Nasiri Moghadam et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Source

Kokshenev V.B.,Federal University of Minas Gerais | Christiansen P.E.R.,Aalborg Zoo
Biological Journal of the Linnean Society

The standard differential scaling of proportions in limb long bones (length against circumference) was applied to a phylogenetically wide sample of the Proboscidea, Elephantidae and the Asian (Elephas maximus) and African (Loxodonta africana) elephants. In order to investigate allometric patterns in proboscideans and terrestrial mammals with parasagittal limb kinematics, the computed slopes between long bone lengths and circumferences (slenderness exponents) were compared with published values for mammals, and studied within a framework of the theoretical models of long bone scaling under gravity and muscle forces. Limb bone allometry in E. maximus and the Elephantidae is congruent with adaptation to bending and/or torsion induced by muscular forces during fast locomotion, as in other mammals, whereas the limb bones in L. africana appear to be adapted for coping with the compressive forces of gravity. Hindlimb bones are therefore more compliant than forelimb bones, and the resultant limb compliance gradient in extinct and extant elephants, contrasting in sign to that of other mammals, is shown to be a new important locomotory constraint preventing elephants from achieving a full-body aerial phase during fast locomotion. Moreover, the limb bone pattern of African elephants, indicating a noncritical bone stress not increasing with increments in body weight, explains why their mean and maximal body masses are usually above those for Asian elephants. Differences in ecology may be responsible for the subtle differences observed in vivo between African and Asian elephants, but they appear to be more pronounced when revealed via mechanical patterns dictated by limb bone allometry. © 2010 The Linnean Society of London. Source

Christiansen P.,Aalborg Zoo | Kitchener A.C.,National Museums Scotland
Mammalian Biology

Recent research has recognised that the clouded leopard (Neofelis nebulosa) is, in fact, two separate species, which differ markedly with respect to craniodental and pelage morphology and genomic characters. There is confusion about the origin and inaccuracies in the description of the nominal specimen, and the undisputed lack of a type specimen prompts designation of a neotype of Neofelis nebulosa. In this paper a neotype specimen consisting of a skin, a skull, and a mandible (BM1955.1644) is designated, which is housed at the Natural History Museum (NHM) in London. The type locality of Neofelis nebulosa is fixed as Chumphon, Peninsular Thailand, under Article 76 of the International Code of Zoological Nomenclature, rather than the original and dubious locality of Canton, China by Edward Griffith. Descriptive data of the neotype specimen are accompanied by comparisons with other specimens of both species of Neofelis, N. nebulosa and N. diardi. © 2010 Gesellschaft für Säugetierkunde. Source

Baratti M.,National Research Council Italy | Cattonaro F.,IGA Technology Services Srl | Di Lorenzo T.,National Research Council Italy | Galassi D.M.P.,University of LAquila | And 16 more authors.
Molecular Ecology Resources

This article documents the public availability of (i) RAD sequencing data and validated SNPs for the American mink Neovison vison and (ii) Transcriptome resources for two nonmodel freshwater crustacean species, the copepod Eucyclops serrulatus and the amphipod Echinogammarus veneris. © 2015 John Wiley & Sons Ltd. Source

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