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Date: 2010-06-16 22:20:01 UTC
Subject: [ferrethealth] new abstracts
To: fhl <ferrethealth@yahoogroups.com>
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From: Sukie Crandall <sukie@mac.com>
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> Zoology (Jena). 2010 May 21. [Epub ahead of print]
Later:
> 2010 May;113(3):189-97. PubMed PMID: 20545058.
> A comparison of epigean and subterranean locomotion in the domestic=20
> ferret
> (Mustela putorius furo: Mustelidae: Carnivora).
> Horner AM, Biknevicius AR.
> Department of Biological Sciences, Ohio University, Irvine Hall,=20
> Athens, OH 45701, USA.
> Burrows are used by many mammals to escape predation, cache food and=20
> for parturition. Although the construction of burrows has been=20
> studied in some taxa, the locomotion while inside of them has=20
> received scant attention. In this study we collected simultaneous=20
> video and force data to characterize gaits, kinematics, peak ground=20
> reaction forces (GRFs) and external mechanical energy profiles in=20
> the domestic ferret, an animal that displays the typical morphology=20
> and behaviors associated with subterranean adaptations in=20
> mustelines. We compared kinematics and kinetics between locomotion=20
> in two experimental conditions: subterranean, simulated by a=20
> Plexiglass tunnel designed such that the ferrets' peak back height=20
> was reduced by 40% and hip height by 25%, and epigean, or=20
> unconstrained overground. Despite the large change in posture, a=20
> striking number of gait and force variables were not statistically=20
> different between experimental conditions. In both subterranean and=20
> epigean conditions, the ferrets in our study traveled at similar=20
> average velocities ( approximately 0.8ms(-1)), preferred to use a=20
> lateral-sequence diagonal-couplet gait, and were more likely to=20
> demonstrate the in-phase fluctuations of external mechanical energy=20
> indicative of running mechanics (68% of all trials). The ferrets=20
> conformed to gait and mechanical patterns seen in a variety of other=20
> small (<1kg) mammals rather than being unique, despite the divergent=20
> morphology of mustelines. Our results demonstrated biodynamically=20
> similar locomotion in both epigean and subterranean conditions and=20
> support the hypothesis that ferrets possess adaptations for tunnel=20
> locomotion. Copyright =A9 2010 Elsevier GmbH. All rights reserved.=20
> PMID: 20547045 [PubMed - as supplied by publisher]
> Arch Microbiol. 2010 Jun 15. [Epub ahead of print]
> Physiological responses of Escherichia coli exposed to different=20
> heat-stress kinetics.
> Guyot S, Pottier L, Ferret E, Gal L, Gervais P.
> Laboratoire de G=E9nie des Proc=E9d=E9s Microbiologiques et Alimentaires-=
> AgroSup Dijon, Universit=E9 de Bourgogne, 1, Esplanade Erasme, 21000, =
> Dijon, France.
> The effects of heat-stress kinetics on the viability of Escherichia=20
> coli were investigated. Cells were exposed to heat-stress treatments=20
> extending from 30 to 50 degrees C, with either a slope (40 min) or a=20
> shock (10 s), both followed by a 1-h plateau at 50 degrees C in=20
> nutritive medium. A higher survival rate was observed after the=20
> slope than after the shock, when both were followed by a plateau, so=20
> the heat slope induced a certain degree of thermotolerance. This=20
> tolerance was partly (i) linked to de novo protein synthesis during=20
> the subsequent plateau phase, and (ii) abolished after rapid cooling=20
> from 50 to 30 degrees C, which means that cellular components with=20
> rapidly reversible thermal properties are involved in this type of=20
> thermotolerance. The heat-slope-induced thermotolerance was chiefly=20
> linked to the maintenance of the plasma membrane integrity=20
> (preservation of structure, fluidity, and permeability), and not to=20
> GroEL or DnaK overexpression. Moreover, the high level of cell=20
> mortality induced by the heat shock could be related to changes in=20
> the membrane integrity. PMID: 20549191 [PubMed - as supplied by=20
> publisher]
The above came up with a search for ferret topics, but since this is
a disease which ferrets also get I included it.
Sukie (not a vet)
Recommended ferret health links:
http://pets.groups.yahoo.com/group/ferrethealth/
http://ferrethealth.org/archive/
http://www.afip.org/ferrets/index.html
http://www.miamiferret.org/
http://www.ferrethealth.msu.edu/
http://www.ferretcongress.org/
http://www.trifl.org/index.shtml
http://homepage.mac.com/sukie/sukiesferretlinks.html
all ferret topics:
http://listserv.ferretmailinglist.org/archives/ferret-search.html
"All hail the procrastinators for they shall rule the world tomorrow."
(2010, Steve Crandall)
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