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  • 1
    Electronic Resource
    Electronic Resource
    Suitable characters for selective breeding in Eisenia fetida (Oligochaeta) (1995)
    Springer
    Biology and fertility of soils 20 (1995), S. 53-56 
    Details
    ISSN: 1432-0789
    Keywords: Eisenia fetida breeding ; Selection ; Growth rate ; Maturation ; Reproduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Selective breeding of invertebrates has been suggested by many but studied by few. The possibilities of improving characters like biomass, maturation time, coccoon production rate, and hatching success of cocoons for the earthworm Eisenia fetida were examined in the present study. The results showed that biomass, maturation time, and number of hatchlings could be successfully improved by selective breeding, although a concomitant tendency to a lower reproductive rate, as found in vertebrates, was observed. Other characters like cocoon production rate, hatching success, and number of hatchlings per cocoon also showed promising results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307841
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Cystic neoplasms of the pancreas – cystadenomas and cystadenocarcinomas (1999)
    Springer
    Langenbeck's archives of surgery 384 (1999), S. 44-49 
    Details
    ISSN: 1435-2451
    Keywords: Key words Cystic pancreatic tumors ; Cystadenoma ; Cystadenocarcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Introduction: Among the rare cystic pancreatic tumors, serous and mucinous cystadenoma and mucinous cystadenocarcinoma are most often diagnosed. Case: We report on a total of 21 patients with cystic neoplasms who underwent surgery, 11 of whom had mucinous cystadenocarcinoma. Of the 10 remaining patients, serous and mucinous cystadenoma were diagnosed in two groups of five. A common feature of all cystic neoplasms is slow growth, leading to clinical symptoms at an advanced stage, with tumors frequently becoming enormous. Results: In approximately half of the cases, diagnosis was possible by means of ultrasound, computed tomography and, in three instances, by preoperative percutaneous aspiration. Differential diagnosis of pseudocysts proved to be most difficult. Conclusion: Given the low operative risk, resection should always be performed in instances where findings cannot be clearly identified. Moreover, compared with ductal pancreatic carcinomas, the prognosis of a cystadenocarcinoma after early resection is extremely favorable, so that postponing resection might reduce the patient's prospects of being cured.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004230050172
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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