| 1. |
- Fox, Graeme, et al.
(author)
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Bespoke markers for ex-situ conservation : application, analysis and challenges in the assessment of a population of endangered undulate rays
- 2018
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In: Journal of Zoo and Aquarium Research. - 2214-7594. ; 6:2, s. 50-56
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Journal article (peer-reviewed)abstract
- Genetic data are important and informative in the management of ex-situ populations. Where the risk of inbreeding is particularly great, it is critical that tools are employed that allow for the quantification of genetic variation and to identify potential breeding pairs. This study demonstrates the rapid application of laboratory and bioinformatics techniques to develop a novel microsatellite marker panel for use with a population of the endangered undulate ray (Raja undulata) and shows how a minimally invasive sampling method can be used with aquarium-dwelling individuals. The study assesses the population and investigates how informative a small microsatellite marker panel is to the conservation of a restricted ex-situ group. It was found that after a single captive generation of R. undulata there is no detectable evidence of reduced heterozygosity and no observable aquaria effects or differences between the generations. In conclusion, the study demonstrates that it is practical, quick and informative to develop a bespoke panel of markers to aid ex-situ conservation efforts of non-model species and make recommendations that these processes should constitute the minimum effort required in managing such a population.
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| 2. |
- Hottges, Nina, et al.
(author)
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How does feeding regime affect behaviour and activity in captive African lions (Panthera leo)?
- 2019
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In: JOURNAL OF ZOO AND AQUARIUM RESEARCH. - : EUROPEAN ASSOC ZOOS & AQUARIA. - 2214-7594. ; 7:3, s. 117-125
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Journal article (peer-reviewed)abstract
- Lions (Panthera leo) are popular zoo animals and obligate carnivores. In the past, zoos focused on the nutritional aspect of feeding, whereas today they also aim to encourage naturalistic feeding opportunities. AZAs Lion Care Manual recommends a frequent feeding schedule, while other sources highlight the benefits of unpredictable, infrequent feeding schedules. Further, the husbandry guidelines for lions by EAZA propose to feed lions separately. To assess how lions are affected by feeding frequency, we collected data on five event behaviour categories (social affiliative, agonistic, exploratory, marking, maintenance) and four state behaviour categories (inactive, active, feed, pace) of four captive lion prides held on either high frequency (HF: feeding pieces of meat on four to five occasions per week) or low frequency feeding (LF: feeding a whole carcass on one occasion per week). We found that some event behaviour categories (agonistic, exploratory and marking) and one state behaviour (feeding) were more frequent for lions on HF feeding. Lions on both feeding regimes engaged more often in agonistic behaviour and were more inactive on feeding days than fasting days. On fasting days, activity and pacing, as well as exploratory, maintenance, marking and social behaviour, were more frequent than on feeding days. During the consecutive fasting days, the lions on LF feeding were increasingly active in terms of walking, trotting and running. The results show that LF feeding with whole carcasses allowed the prides to resolve social discrepancies during feeding, which reduced aggression between feedings. LF feeding resulted in satiety of the lions to the extent of altered behaviour during feeding day and the first fasting day, whereas lions on HF feeding showed unvarying behaviour during feeding and fasting days suggesting a lack of satiety.
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