Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Insect Seasonality: Why? (1988)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Ecology, Evolution, and Systematics 19 (1988), S. 1-18 
    Details
    ISSN: 0066-4162
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.es.19.110188.000245
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Seasonal changes in the photoperiodic response regulating diapause in a tropical beetle, Stenotarsus rotundus
    Amsterdam : Elsevier
    Journal of Insect Physiology 34 (1988), S. 1135-1142 
    Details
    ISSN: 0022-1910
    Keywords: Endomychidae ; Stenotarus rotundus ; flight muscles ; gonad development ; imaginal diapause ; photoperiod
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-1910(88)90216-8
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Aggregation promotes water conservation during diapause in the tropical fungus beetle, Stenotarsus rotundus (1992)
    Springer
    Entomologia experimentalis et applicata 63 (1992), S. 203-205 
    Details
    ISSN: 1570-7458
    Keywords: Diapause ; aggregation ; tropics ; net transpiration rate ; fungus beetle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00343579
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Seasonal wing length dimorphism in a tropical seed bug: ecological significance of the short-winged form (1987)
    Springer
    Oecologia 73 (1987), S. 559-565 
    Details
    ISSN: 1432-1939
    Keywords: Rhopalidae ; Wing length dimorphism ; Diapause ; Egg size variation ; Dry season
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Short-winged forms of the bug, Jadera aeola, were discovered during the late dry season at a study site on Barro Colorado Island, Panama. They were smaller than long-winged adults not only in elytron and hindwing sizes but also in head, thorax, rostrum and hind femur dimentions. When newly emerged adults were kept under natural photothermal conditions, short-winged females started ovipositing earlier, produced more eggs, and died earlier than did long-winged females. This was partly due to the fact that long-winged adults usually enter diapause after adult energence (Tanaka et al. 1987b). Egg size was another factor contributing to the high egg production in the short-winged form; it was significantly smaller in the short-winged form than that in the long-winged form. Wing form was apparently environmentally induced because all off-spring of short-winged adults became long-winged. No short-winged form was obtained in the laboratory when nymphs were reared on different species of seeds at different photoperiods. Although the factor(s) responsible for determination of the wing form remains unknown, the ecological significance of this short-winged form seems clear, i.e. exploitation of the food resource left in the late dry season. Wing length dimorphism in J. aeola could be a response to unpredictable availability of the food resource determined by seed production of the host plants (Sapindaceae) and by the timing of the onset of a wet season.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00379416
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    The role of food in the dynamics of populations of the landsnail Cepaea nemoralis (1971)
    Springer
    Oecologia 7 (1971), S. 361-381 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The food of the landsnail Cepaea nemoralis has been studied in natural environments. The diet of Cepaea in nature consists predominantly of senescent or dead plant material. Green material of some species, especially Urtica dioica, is also eaten in large quantities and algae, animal remains, fungi and, possibly, living aphids and thripses are included in the diet. The place where a snail is found during the day usually has a great predictive value for the food it ate during the preceding night. There are, however, exceptions. Species such as Aegopodium podagraria, Calystegia sepium and Phragmites communis are used very often to sit on but are hardly ever eaten. On the other hand species such as Urtica dioica and Ranunculus repens were very much favoured as foodplants but much less favoured as resting places. The distribution of the snails over the various components of the vegetation is not random and neither is the selection of food. The snail distribution does not explain the food selection or vice versa. Quantity of food probably is hardly ever limiting for the distribution and abundance of Cepaea. Some essential components may, however, very well be in short supply and thus be limiting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00345860
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Genetics of polymorphism in the land snail,Cepaea nemoralis (1969)
    Springer
    Genetica 40 (1969), S. 475-502 
    Details
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The results of 40 single-pair matings of the landsnailCepaea nemoralis, mostly concerning the rarer banding patterns are presented. A total of 3678 F1 individuals were obtained, 2315 of which were scored when adult, the remainder as juveniles. The presence or absence of band 3 in banded snails does not seem to be genetically determined. It is shown that several banding patterns (e.g. 12300, 02300, 00340, 003300, 00305) should be classified as 00300. The presence or absence of extra (satellite-) bands seems to be multifactorially controlled. It is suggested that pattern 10345 is dominant over 12345 and that it is determined either by an allele of the “threebanded” locus, recessive to pattern-allele 00345, or by a different locus but then epistatically suppressed by the gene for 00345. Pattern 02345 in some cases is genetically 00345 and in other cases 12345. Fusion of bands 4 and 5 is multifactorially controlled, and is perhaps influenced by, or linked to, the loci for colour and three-bandedness. Fusion of bands 1 and 2 seems to be also multifactorially controlled. This fusion is strongly correlated with fusion (45), and is independent of colour. Pale is recessive to dark body colour. The latter occurs in several shades which are multifactorially controlled. Reddish body colour is recessive to yellowish, and the gene concerned is linked with that for shell colour. Variation in the expression of dominance was found at the loci for 00300, 00345, 10345, reddish body colour and pale body colour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01787373
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...