| Records |
| Author |
Gholib, G.; Heistermann, M.; Agil, M.; Supriatna, I.; Purwantara, B.; Nugraha, T.P.; Engelhardt, A. |
| Title |
Comparison of fecal preservation and extraction methods for steroid hormone metabolite analysis in wild crested macaques |
Type |
Journal Article |
| Year |
2018 |
Publication |
Primates |
Abbreviated Journal |
Primates |
| Volume |
59 |
Issue |
3 |
Pages |
281-292 |
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| Abstract |
Since the non-invasive field endocrinology techniques were developed, several fecal preservation and extraction methods have been established for a variety of species. However, direct adaptation of methods from previous studies for use in crested macaques should be taken with caution. We conducted an experiment to assess the accuracy and stability of fecal estrogen metabolite (E1C) and glucocorticoid metabolite (GCM) concentrations in response to several preservation parameters: (1) time lag between sample collection and fecal preservation; (2) long-term storage of fecal samples in 80% methanol (MeOH) at ambient temperature; (3) different degrees of feces drying temperature using a conventional oven; and (4) different fecal preservation techniques (i.e., freeze-drying, oven-drying, and field-friendly extraction method) and extraction solvents (methanol, ethanol, and commercial alcohol). The study used fecal samples collected from crested macaques (Macaca nigra) living in the Tangkoko Reserve, North Sulawesi, Indonesia. Samples were assayed using validated E1C and GCM enzyme immunoassays. Concentrations of E1C and GCM in unprocessed feces stored at ambient temperature remained stable for up to 8 h of storage after which concentrations of both E1C and GCM changed significantly compared to controls extracted at time 0. Long-term storage in 80% MeOH at ambient temperature affected hormone concentrations significantly with concentrations of both E1C and GCM increasing after 6 and 4 months of storage, respectively. Drying fecal samples using a conventional oven at 50, 70, and 90 °C did not affect the E1C concentrations, but led to a significant decline for GCM concentrations in samples dried at 90 °C. Different fecal preservation techniques and extraction solvents provided similar results for both E1C and GCM concentrations. Our results confirm previous studies that prior to application of fecal hormone analysis in a new species, several preservation parameters should be evaluated for their effects on hormone metabolite stability. The results also provide several options for fecal preservation, extraction, and storage methods that can be selected depending on the condition of the field site and laboratory. |
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1610-7365 |
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Equine Behaviour @ team @ Gholib2018 |
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6521 |
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Gese, E.M.; Ruff, R.L. |
| Title |
Howling by coyotes (Canis latrans): variation among social classes, seasons, and pack sizes |
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| Year |
1998 |
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Can J Zool |
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76 |
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Equine Behaviour @ team @ Gese1998 |
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6462 |
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Genov, P.W.; Kostava, V. |
| Title |
Untersuchungen zur zahlenmäßigen Stärke des Wolfes und seiner Einwirkung auf die Haustierbestände in Bulgarien |
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Journal Article |
| Year |
1993 |
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Zeitschrift für Jagdwissenschaft |
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39 |
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4 |
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217-223 |
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Die Untersuchung wurde in der Zeitspanne von 1984 bis 1988 durchgeführt. Es wurden die Protokolle des Staatlichen Versicherungsinstituts benutzt, die Angaben für Raubüberfälle von Wölfen auf Haustiere beinhalten (Tabelle 1). Außerdem wurden Angaben über die während dieser Zeitspanne erlegten Wölfe zusammengefaßt. Die Abschußzahlen lauten: 1984 – 163, 1985 – 147, 1986 – 179, 1987 – 211 und 1988 – 220 Tiere. Die Anzahl der in den einzelnen Gebirgen lebenden Wölfe wurde nach einer Umfrage festgestellt. Für die in Betracht kommenden Gebirge werden folgende Bestandszahlen angenommen: Rhodopen -- 60-80 Individuen, 189 bis 264 km2 pro Tier, Rila- und Piringebirge -- 60-80 Tiere, 109 bis 145 km2 pro Tier, Ossogowo-Belassiza Gebirgssystem -- 40-50 Individuen, 57-70 km2 pro Tier, West- und Mittelbalkan -- 35-38 Wölfe, 200 km2 pro Tier. Dazu kommen noch 10-15 Wölfe im Flußbecken von Beli Lom und etwa 20 Exemplare in Strandscha- und Sakargebirge. Insgesamt lebten in Bulgarien im Jahre 1988 etwa 260-330 Wölfe (Abb. 1). |
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1439-0574 |
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Equine Behaviour @ team @ Genov1993 |
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6686 |
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Gazzola, A.; Avanzinelli, E.; Mauri, L.; Scandura, M.; Apollonio, M. |
| Title |
Temporal changes of howling in south European wolf packs |
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2002 |
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Ital J Zool |
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69 |
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Equine Behaviour @ team @ Gazzola2002 |
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6495 |
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| Author |
Gardner, E.L.; Engel, D.R. |
| Title |
Imitational and social facilitatory aspects of observational learning in the laboratory rat |
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1971 |
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Psychonomic Science |
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Psychon. Sci. |
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25 |
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1 |
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5-6 |
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Rats acquired a food-motivated leverpressing response by “observational learning” or by trial-and-error learning under conditions of social facilitation or isolation. Both the observational learning and social facilitation Ss learned faster than did the isolated trial-and-error Ss. There was no difference in speed of learning between the observational learning and social facilitation groups. It is suggested that some previous studies purporting to demonstrate observational learning may have demonstrated socially facilitated trial-and-error learning instead. |
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0033-3131 |
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Equine Behaviour @ team @ Gardner1971 |
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6421 |
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Galaverni, M.; Palumbo, D.; Fabbri, E.; Caniglia, R.; Greco, C.; Randi, E. |
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Monitoring wolves (Canis lupus) by non-invasive genetics and camera trapping: A small-scale pilot study |
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Journal Article |
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2012 |
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Eur J Wildl Res |
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58 |
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Equine Behaviour @ team @ Galaverni2012 |
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6479 |
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Fuller, T.K.; Sampson, B.A. |
| Title |
Evaluation of a simulated howling survey for wolves |
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1988 |
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J Widl Manag |
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52 |
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Equine Behaviour @ team @ Fuller1988 |
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6458 |
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Fritts, S.H.; Bangs, E.E.; Gore, J.F. |
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The relationship of wolf recovery to habitat conservation and biodiversity in the northwestern United States |
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1994 |
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Landsc Urban Plan |
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28 |
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Equine Behaviour @ team @ Fritts1994 |
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6453 |
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Frank, H.; Frank, M.G. |
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On the effects of domestication on canine social development and behavior |
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1982 |
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Appl Anim Ethol |
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8 |
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Equine Behaviour @ team @ Frank1982 |
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6259 |
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Frank, H. |
| Title |
Evolution of canine information processing under conditions of natural and artificial selection |
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1980 |
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Z Tierpsychol |
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5 |
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Equine Behaviour @ team @ Frank1980 |
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6243 |
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