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Biomedical subjects

G Bräuer

Publications and source records attributed to G Bräuer.

14 recordsLinked to original sources
PubMed2006

Occurrence of Atractolytocestus huronensis (Cestoda, Caryophyllaeidae) in German pond-farmed common carp Cyprinus carpio.

Up to now, the caryophyllid cestode Atractolytocestus huronensis Anthony, 1958, a parasite of common carp, has attracted little attention in Germany. Based on recent publications from the Czech Republic and Hungary, it appears probable that this cestode may be increasingly common in Germany. There is a strong connection between the occurrence of A. huronensis and imports of common carp from the Czech Republic and southern Germany. Although in most cases no clinical alterations in parasitized carp have been observed, care should be taken to avoid further dissemination and to prevent possible losses in commercial pond farming.

Age Factors↗
PubMed1993

Morphological comparison of archaic Homo sapiens crania from China and Africa.

Regional features play a great role in the analysis of the differentiations of Homo erectus and Homo sapiens. However, this poses the question how widespread and variable these features are. In order to examine this with regard to the features commonly seen in China their occurrence and variability were determined in Chinese as well as in African crania of archaic and late Pleistocene/Holocene modern Homo sapiens. Furthermore, some features known from Africa were examined with regard to their occurrence and variability in China. Although the variability might change due to new finds, the present results for some features point to larger morphological spectra in the African than in the Chinese archaic Homo sapiens. It is furthermore remarkable that the early modern Chinese in many features show deviations from the pattern of archaic Homo sapiens of this region and exhibit broader spectra similar to those seen in African archaic and early modern Homo sapiens.

Africa↗
PubMed1988

Hominid molars from a Middle Stone Age level at the Mumba Rock Shelter, Tanzania.

Three hominid molars were recovered from a depth of 7.0-7.1 meters in the Mumba Shelter at Lake Eyasi, northern Tanzania. Geological context of the finds and archaeological data indicate that people with a Middle Stone Age technology were using the Mumba locality intermittently whenever retreat of lake waters allowed access to the site. Uranium series dates suggest an age on the order of 130,000 years bp for the teeth and stone tools. Based on morphological analyses, the dental remains probably belonged to one individual and appear to be the crowns of two upper permanent M2s and one lower permanent M2. Crown areas are very small, even in comparison to the variation exhibited by recent African populations. Crown patterns have no archaic features. These teeth are smaller than any verifiable archaic Homo sapiens examples; thus, they may represent early anatomically modern Homo sapiens.

Animals↗
PubMed1978

[Estimation of the heritability of hair and eye color].

In the present study the colours of hair are regarded as quantitative genetic characters. The genetic and environmental components of the total variance of the characters are determined by analysis of correlation between parents and children as well as full sibs. An analysis of correlation coefficients makes it possible to further examine whether autosomal dominance or X-linked factors play a role in the inheritance. The correlations between the parents make the genetical analysis more complicated as they raise the correlation coefficients between relatives. The estimates of heritability are 0.61 (hair-colour) and 0.80 (eye-colour). These estimates may serve as preliminary values of orientation. Only further studies will show whether the relative large part of the variance caused by the environment can be confirmed. Dominance may play a small role in the case of hair colour, while it seems to be absent in eye-colour. There are no sufficient indications of X-linked factors for both characters.

Adult↗