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Author Clutton-Brock, T.H.; Green, D.; Hiraiwa-Hasegawa, M.; Albon, S.D. url  doi
openurl 
  Title (up) Passing the buck: resource defence, lek breeding and mate choice in fallow deer Type Journal Article
  Year 1988 Publication Behav. Ecol. Sociobiol. Abbreviated Journal  
  Volume 23 Issue Pages 281-296  
  Keywords  
  Abstract lsquoLekrsquo breeding systems, where males defend small, clustered mating territories, are thought to occur where the distribution of females is heavily clumped but males are unable to defend resources used by females. In this paper, we describe a breeding system in fallow deer where males are able to defend resources used by females but the most successful bucks instead defend small territories on a traditional mating ground; where the lek is sited in an area not heavily used by females at other times of year and is visited primarily by females in or close to oestrus; and where mating success on the lek is related to territory position and to male phenotype but not to the resources available on different lek territories. Comparisons with other ungulates suggest that lek breeding species fall into two groups: those where leks are regularly visited by herds of females many of which are not in oestrus and those, like fallow deer, where leks are visited primarily by oestrous females. In the latter species, it is unlikely that females visit the lek for ecological reasons.  
  Address  
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  Series Editor Series Title Abbreviated Series Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes 10.1007/Bf00300575 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4882  
Permanent link to this record
 

 
Author Holzapfel, W.H.; Botha, S.J. openurl 
  Title (up) Physiology of Sporolactobacillus strains isolated from different habitats and the indication of in vitro antagonism against Bacillus species Type Journal Article
  Year 1988 Publication International Journal of Food Microbiology Abbreviated Journal Int J Food Microbiol  
  Volume 7 Issue 2 Pages 161-168  
  Keywords Animals; Bacillaceae/isolation & purification/*physiology; Bacillus/*physiology; Cattle; *Ecology; Feces/*microbiology; Food Microbiology; Horses; Sewage; Sheep; Water Microbiology  
  Abstract In an ecological study only low numbers of Sporolactobacillus were found in habitats such as the faeces of herbivores, the rumen of cattle and the final waste water of an abattoir. Their presence in the final waste water of an abattoir indicates their possible association with food, and, more specifically, with meat. Differences were found in some physiological characteristics. One isolate (L2404) differed from the authentic Sporolactobacillus ATCC 15538 by its inability to ferment inulin, its growth in presence of 6.5% NaCl and in 0.2% tellurite, by the isomer(s) of lactic acid produced and the mol% G + G in the DNA. One Sporolactobacillus isolate (L2407) showed antagonism against Bacillus cereus, Bacillus cereus var, mycoides, Bacillus megaterium and Bacillus subtilis.  
  Address Department of Microbiology and Plant Pathology, University of Pretoria, Republic of South Africa  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0168-1605 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:3275317 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2675  
Permanent link to this record
 

 
Author Black, J.M. url  doi
openurl 
  Title (up) Preflight Signalling in Swans: A Mechanism for Group Cohesion and Flock Formation Type Journal Article
  Year 1988 Publication Ethology Abbreviated Journal Ethology  
  Volume 79 Issue 2 Pages 143-157  
  Keywords  
  Abstract Abstract The preflight behaviour of whooper swans Cygnus cygnus and Bewick's swans Cygnus columbianus bewickii was examined to determine the adaptive significance of the ritual. Analysis of the preflight sequence revealed that the rate of signalling became significantly faster as the time of takeoff approached. This provides the first quantitative evidence that a threshold of excitability is responsible for triggering synchronised flight in social units. Two ultimate and two proximate factors that affect this threshold were uncovered. They are: 1) Maintaining proximity to partners—flight was delayed by birds with non-attentive mates and signalling lasted on average four times longer than those whose mates showed more interest. 2) Maintaining flock cohesiveness—birds which performed signals for longer periods while swimming among uninterested birds were successful in attracting followers 61% of the time. 3) The bird's feeding performance related to dominance status—less successful feeders (potentially hungry birds), flew after little time and few signals. 4) The type of feeding opportunity at the eventual destination—birds which flew to provided feeds (nutritious barley) spent less time performing preflight signals than when they flew to forage on grass fields.  
  Address  
  Corporate Author Thesis  
  Publisher Blackwell Publishing Ltd Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1439-0310 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5315  
Permanent link to this record
 

 
Author Kirkpatrick, J. F.; Kasman, L. H.; Lasley,; B. L.; Turner, J. W. Jr. doi  openurl
  Title (up) Pregnancy Determination in Uncaptured Feral Horses Type Journal Article
  Year 1988 Publication Journal of Wildlife Management Abbreviated Journal J Wildl Manag  
  Volume 52 Issue 2 Pages 305-308  
  Keywords  
  Abstract The urinary excretion of estrone sulfate ($\text{E}{1}\text{S}$) by 25 free-roaming feral horses (Equus caballus) was measured by radioimmunoassay applied to extracts of urine-soaked soil. Twelve of 15 mares having $\text{E}{1}\text{S}$ concentrations >1.0 mg/mg creatinine (x = 2.64 +- 1.02 [SD]) produced foals. All 10 mares with $\text{E}{1}\text{S}$ concentrations <1.0 mg/mg creatinine (x = 0.44 +- 0.26) did not foal. Extracting urine from soil and measuring $\text{E}{1}\text{S}$ and creatinine can be used to determine pregnancy in free-roaming feral horses without the stress of capture or immobilization.  
  Address  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2290  
Permanent link to this record
 

 
Author KIRKPATRICK JF et al, openurl 
  Title (up) Pregnancy determination in uncaptured feral Horses based on steroid metabolites in urine – soaked snow and free steroids in feces Type Journal Article
  Year 1988 Publication Abbreviated Journal  
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  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1272  
Permanent link to this record
 

 
Author Houpt, K.A.; Fraser, A.F. url  doi
openurl 
  Title (up) Przewalski horses Type Journal Article
  Year 1988 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.  
  Volume 21 Issue 1-2 Pages 1-3  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2302  
Permanent link to this record
 

 
Author Ryder, O.A. url  openurl
  Title (up) Przewalski's horse – putting the wild horse back in the wild Type Journal Article
  Year 1988 Publication Oryx Abbreviated Journal Oryx  
  Volume 22 Issue Pages 154-157  
  Keywords Equidae genetics.  
  Abstract The Asian wild horse, or Przewalski's horse (Equus przewalskii), is believed to currently survive only in captivity. There are more than 660 individuals in over 70 zoological collections, and animals are available for reintroduction. The Przewalski's horse had been bred in captivity for 12 generations, and inbreeding has occurred. Genetic variability has been lost, and released animals will require acclimatization on or near release sites. In China, a program is under way for acclimatization, breeding, and release of wild horses, and plans are being made for a similar program in Mongolia. (LCA)  
  Address  
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  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved yes  
  Call Number Serial 1537  
Permanent link to this record
 

 
Author Westlin-van Aarde, L.M.; van Aarde, R. J.; Skinner, J. D. doi  openurl
  Title (up) Reproduction in female Hartmann's zebra Type Journal Article
  Year 1988 Publication Journal of Reproduction and Fertility Abbreviated Journal J Reprod Fert  
  Volume 84 Issue Pages 505-511  
  Keywords zebra; reproduction; ovaries; seasonality; progesterone  
  Abstract Ovaries, fetuses and plasma were collected from zebra mares shot in the Etosha National Park in Namibia between 15 and 25 August 1983. Ovarian weight was affected by reproductive status and most of the non-pregnant mares were anoestrous. The number of follicles varied between individuals and only pro-oestrous/oestrous mares had follicles larger than 20 mm in diameter. The largest follicle in pregnant mares was only 9 mm in diameter. Corpora lutea and corpora albicantia were found in non-pregnant as well as pregnant mares: 4 pregnant mares had only corpora albicantia. The presence of secondary corpora lutea could not be confirmed in any of the pregnant mares. Implantation was estimated to occur at around 73 days of gestation, and most mares (84%) had conceived between November and April. Peripheral concentrations of plasma progesterone during pregnancy varied from 0·5 to 2·4 ng/ml.  
  Address  
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  Language Summary Language Original Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved yes  
  Call Number Serial 1705  
Permanent link to this record
 

 
Author Fielding D, openurl 
  Title (up) Reproductive characteristics of the Jenny donkey – Equus Asinus: a review Type Journal Article
  Year 1988 Publication Abbreviated Journal Trop Anim Hlth Prod  
  Volume 20 Issue Pages 161-166  
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  Area Expedition Conference  
  Notes from Professor Hans Klingels Equine Reference List Approved no  
  Call Number Serial 1086  
Permanent link to this record
 

 
Author Huff, A.N. url  doi
openurl 
  Title (up) Safety Type Journal Article
  Year 1988 Publication Journal of Equine Veterinary Science Abbreviated Journal  
  Volume 8 Issue 1 Pages 81-81  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 4669  
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