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| Romanow, Peter; Poduschka, Walter; Deutsch, Werner. |
| The Russian Desman Desmana moschata (Linnaeus, 1758) is a highly endangered semiaquatic mammal, confined to disjunct areas. Between 1983 and 1992 several specimens were kept and investigated, firstly in the zoological garden of Moscow (4 ♀ ♀, 1 ♂), and afterwards in the field station of the former Soviet-Russian Academy of Sciences at Cernogolovka (1 ♀, 4 ♂ ♂). Parallel to this, numerous extended field trips to the huge wetlands of the Oka Reserve allowed the verification of the results obtained in captivity. An unexpectedly rich repertoire of acoustic signals was recorded and transferred to sonagrams in Vienna/Austria. After tentative interpretation, the acoustic signals were correlated with simultaneous behaviour patterns. Not only the essential... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Russian Desman; Desmana moschata; Acoustic communication; Sonagrams; Oka Reserve; Female dominance; Restricted social tolerance. |
| Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/504222 |
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| Poduschka, Walter. |
| Two female Hemiechinus auritus syriacus (litter mates) were kept together for 4 weeks and demonstrated intense homosexual activity and prolonged oestrus during the entire period. This resulted also in an unwillingness to mate for one and a half, and two and a half years, respectively. A comparison of this abnormal behaviour and its results, with the different sexual effects described in laboratory rodents and domestic animals, indicated that these wellknown effects cannot be demonstrated in Erinaceinae, the effect of the stimuli being mostly quite contrary. |
| Tipo: Article / Letter to the editor |
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| Ano: 1981 |
URL: http://www.repository.naturalis.nl/record/504410 |
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| Poduschka, Walter. |
| In a comparison of basic reproductive variables (number of teats, litter size, and duration of pregnancy) in the Madagascan Tenrecinae, some striking features (hyperthelia, litter size) are observed in Tenrec ecaudatus Lacépède, 1799 and the genus Hemicentetes Mivart, 1871. These variations are compared to Setifer setosus Froriep, 1806 and Echinops telfairi Martin, 1838. Tenrec ecaudatus gives birth to litters at intervals shorter than what was once believed to be the duration of pregnancy. This could be due either to superfetation, or to giving birth to one litter in two or more installments. The longitudinal stripe pattern of the genus Hemicentetes is interpreted as a mimicry of the sympatric, equally striped, juvenile Tenrec ecaudatus. The latter... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Insectivora; Tenrecidae; Hyperthelia; Reproduction; Litter size; Pregnancy; Mimicry. |
| Ano: 1996 |
URL: http://www.repository.naturalis.nl/record/504596 |
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