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  • cockroach  (4)
  • German cockroach  (2)
  • Brain disinhibition  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Juvenile hormone regulation of the left colleterial gland in intact and ovariectomized Blattella germanica (L.) (Dictyoptera: Blattellidae)
    Amsterdam : Elsevier
    Journal of Insect Physiology 37 (1991), S. 401-405 
    Details
    ISSN: 0022-1910
    Keywords: Blattella germanica ; Colleterial gland ; cockroach ; corpora allata ; juvenile hormone ; ovariectomy
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-1910(91)90049-6
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Neural and hormonal regulation of calling behavior in Blattella germanica females
    Amsterdam : Elsevier
    Journal of Insect Physiology 40 (1994), S. 251-258 
    Details
    ISSN: 0022-1910
    Keywords: Calling behavior ; German cockroach ; Juvenile hormone ; Mating ; Neural inhibition
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-1910(94)90048-5
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Role of the brain in juvenile hormone synthesis and oocyte development: Effects of dietary protein in the cockroach Blattella germanica (L.)
    Amsterdam : Elsevier
    Journal of Insect Physiology 39 (1993), S. 303-313 
    Details
    ISSN: 0022-1910
    Keywords: Blattella germanica ; Brain disinhibition ; Cockroach ; Corpora allata ; Juvenile hormone ; Nutrition ; Protein
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-1910(93)90061-U
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of protein type and concentration on development and reproduction of the German cockroach, Blattella germanica (1992)
    Springer
    Entomologia experimentalis et applicata 63 (1992), S. 123-134 
    Details
    ISSN: 1570-7458
    Keywords: Protein ; diet ; nutrition ; Blattellidae ; cockroach ; development ; reproduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Nymphal development and adult female reproduction were examined in the German cockroach, Blattella germanica, using a defined artificial diet in which the type of protein was varied. Milk proteins, including casein, supported development poorly compared to meat and plant proteins. Soybean protein supported development better than all other highly purified proteins including vitamin-free casein which is commonly used in artificial diets. Last instar females fed the soybean-based diet eclosed earlier at higher eclosion weights, developed their oocytes at a faster rate and experienced higher fecundity than females fed a vitamin-free casein-based diet. Last instar females exhibited different dose-response patterns on diets containing soybean isolate or vitamin-free casein. However, at all concentrations soybean protein was superior to casein in supporting development. The results of a food utilization study during the last instar revealed that consumption rates varied between females fed the soybean and casein based diets. However, approximate digestibility, efficiency of conversion of digested food and the efficiency of conversion of ingested food did not vary significantly between the two dietary treatments. Differential development of females fed the two diets was attributed to differences in stage-specific consumption rates and the poorer quality of casein as a source of protein for development in this species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00343572
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Sexual differentiation of nymphal corpora allata and the effects of ovariectomy on adult gland morphometrics inBlattella germanica (1991)
    Springer
    Cellular and molecular life sciences 47 (1991), S. 81-83 
    Details
    ISSN: 1420-9071
    Keywords: Cell number ; corpora allata ; juvenile hormone ; cockroach ; ovary ; sexual dimorphism ; Blattella germanica
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Changes in the number of corpus allatum (CA) cells were investigated in nymphs and in intact and ovariectomized adult femaleBlattella germanica. The CA of intact adult females exhibit cyclic changes in volume in relation to juvenile hormone (JH) synthesis, while the CA of ovariectomized females become significantly hypertrophied as a result of a gradual and continuous increase in volume that is independent of JH biosynthesis. In both intact and ovariectomized females changes in JH synthesis and CA volume are not related to total cell number which remains relatively constant. However, adult females have twice as many CA cells as do adult males as a result of a female-specific increase in total cell number late in the last nymphal instar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02041260
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Volatile sex pheromone in the female German cockroach (1993)
    Springer
    Cellular and molecular life sciences 49 (1993), S. 324-328 
    Details
    ISSN: 1420-9071
    Keywords: Sex pheromone ; German cockroach ; sexual behavior ; pheromone gland ; attractant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Virgin German cockroach adult females release an attractant that can be extracted with organic solvents and trapped from air blown over sexually receptive females. Behavioral assays with an olfactometer showed that the attractant was produced exclusively by adult females and it elicited behavioral responses in adult males, confirming its function as a female sex pheromone. Using behavioral and electrophysiological assays, we localized the site of pheromone production on the tenth abdominal tergite where an adult female-specific gland is found. Females whose glands were ablated were significantly less attractive to males than sham-operated control females.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01923412
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Hormonal control of sexual receptivity in cockroaches (1995)
    Springer
    Cellular and molecular life sciences 51 (1995), S. 994-998 
    Details
    ISSN: 1420-9071
    Keywords: Sexual receptivity ; sexual behavior ; juvenile hormone ; cockroach
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Many animals exhibit specific behaviors associated with sexual receptivity only when they are reproductively competent. In insects with gonadal maturation cycles, these behaviors usually coincide with ovarian matruation. In the cockroachBlattella germanica, juvenile hormone (JH), produced by the corpora allata (CA), regulates female reproductive physiology. Various experimental manipulations, including ablation of the CA, therapy with JH analogs, CA denervation, ovariectomy, and changing nutrient quality, coupled with time-lapse video recording, support the hypothesis that JH also controls female sexual receptivity. A re-examination of the role of the CA in the maturation of male sexual readiness shows that, while sexual behavior develops in the absence of JH in bothB. germanica andSupella longipalpa, JH accelerates the expression of sexual readiness.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01921755
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    Paper (German National Licenses)
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