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  • 1
    Electronic Resource
    Electronic Resource
    Sociobiological studies of the polygynic antLasius sakagamii II. Production of colony members (1982)
    Springer
    Insectes sociaux 29 (1982), S. 164-174 
    Details
    ISSN: 1420-9098
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Resume ChezLasius sakagamii, le taux de reproduction est en relation avec la densité des reines dans chaque nid. Dans les nids à forte densité de reines, le développement des ovaires et le taux de ponte de chaque reine sont plus faibles que dans les autres nids, alors que le nombre des œufs dans chaque nid est plus élevé. En général, dans les nids à très forte densité de reines (plus du 25 reines par mètre carré de nid) ou avec des faibles rapports ouvrières/reine (moins de 5 000 ouvrières pour une reine), aucune reine ailée n'est produite. C'est aussi le cas des nids où les rapports larves/ouvrière sont élevés (plus de 5 larves par ouvrière). D'autre part, la production des ouvrières et des mâles est plus grande dans les nids à forte densité de reines que dans ceux où la densité de celle-ci est faible.
    Notes: Summary The reproduction rate ofL. sakagamii is related to the queen density in each nest. In nests with higher queen densities, the ovarian development and the egg-laying rate of each queen is lower, though the number of eggs produced per nest is larger. In general, in nests with very high queen densities (more than about 25 queens per square meter of nest) or low worker/queen ratios (less than about 5,000 workers per queen), no alate queens are produced. Further, nests with high larva/worker ratios (more than about 5 larvae per worker) also produce no alate queens. On the other hand, the production of workers and males is larger in nests with high queen densities than in those with low queen densities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02228749
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  • 2
    Electronic Resource
    Electronic Resource
    The caste system of the dolichoderine antTechnomyrmex albipes (Hymenoptera: Formicidae): morphological description of queens, workers and reproductively active intercastes (1991)
    Springer
    Insectes sociaux 38 (1991), S. 413-422 
    Details
    ISSN: 1420-9098
    Keywords: Castes ; reproductive intercastes ; supplementary reproductives
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Females ofTechnomyrmex albipes consist of winged queens, intercastes and workers. In established colonies, reproduction is performed by many intercastes (wingless females which have intermediate phenotypes between queen and worker characters). Dissection and morphological examination revealed that intercastes had a spermatheca, but workers did not. Intercastes can be divided into three classes: major intercastes with three ocelli, medium intercastes with one ocellus, and minor intercases without ocelli. Workers have no ocelli. The thoracic structure of intercastes gradually becomes more complex from minors to majors. The body size of intercastes gradually increases from minors to majors, and so does the number of overioles. The body size distributions of minor intercastes and workers overlap considerably, but the distributions of ovariole numbers overlap less. Winged queens had distinctly larger body sizes, more ovarioles and larger spermathecae than intercastes. Most intercastes were inseminated with developed ovaries and appeared to reproduce. The caste system and reproductive division of labour inT. albipes is compared to those of ant species in which permanently wingless females reproduce.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01241875
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  • 3
    Electronic Resource
    Electronic Resource
    Frequent occurrence of gynandromorphs in the natural population of the antVollenhovia emeryi (Hymenoptera: Formicidae) (1994)
    Springer
    Insectes sociaux 41 (1994), S. 273-278 
    Details
    ISSN: 1420-9098
    Keywords: Vollenhovia emeryi ; gynandromorph ; dimorphism ; microgyna ; polygyny
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Many gynandromorphs were obtained from the natural population ofVollenhovia emeryi (microgyna form) in Gifu, Japan. They were primarily male: most had the thorax and gaster of males, and the head contained tissues partially feminized to varying degrees. These gynandromorphs were found in 27 of 45 colonies studied (60.0%). Their proportion to total males in each colony varied from 3.7–47.7%, with a mean of 21.4% (n = 21). The gynandromorphs were found in all study areas and in every study year, suggesting that gynandromorphism in this species is not a rare phenomenon. Moreover, this observation suggests that gynandromorphs may occur more frequently in micraners than in macraners.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01242298
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  • 4
    Electronic Resource
    Electronic Resource
    Dimorphic ergatoid males and their reproductive behavior in the ponerine antHypoponera bondroiti (1996)
    Springer
    Insectes sociaux 43 (1996), S. 119-130 
    Details
    ISSN: 1420-9098
    Keywords: Hypoponera bondroiti ; ergatoid male ; intercaste ; dimorphism ; mating strategy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We studied the reproductive behavior of the ponerine antHypoponera bondroiti from Okinawa, Japan. This species has dimorphic wingless ergatoid males (major and minor), dimorphic reproductive females (alate queens and wingless reproductive intercastes), and workers. Workers have neither ovarioles nor spermatheca. Major ergatoid males are the largest colony members. Two major males fought one another in the nest until one disappeared, leaving the other to occupy the nest chambers where queens emerge and mate. Minor ergatoid males also fought one another, although they seemed to be less pugnacious, resulting in occasional cohabitation of multiple minor males in the same nest chamber. Major males never attacked minor ones, allowing them to coexist in the same nest chamber. Minor males seemed to mimic females. Both major and minor males mated with both alate queens and intercastes within the nest. After mating, some alate queens shed their wings and remained in the nest, while the others left the nest for dispersal in the laboratory. Intercastes remained in the nest.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01242564
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  • 5
    Electronic Resource
    Electronic Resource
    F"0F"1-ATPase of Vibrio parahaemolyticus: Purification using new detergents and characterization
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Bioenergetics 1188 (1994), S. 69-74 
    Details
    ISSN: 0005-2728
    Keywords: (Vibrio parahaemolyticus) ; ATPase, F"0F"1"- ; ATPase, unstable ; Detergent ; Purification
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2728(94)90023-X
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