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1.
Riviane R. Hora Claudie Doums Chantal Poteaux Renée Fénéron Jorge Valenzuela Jürgen Heinze Dominique Fresneau 《Behavioral ecology and sociobiology》2005,59(2):285-292
Social parasites exploit the worker force of colonies of other social insects to rear their own young. Social parasitism occurs in several Hymenoptera and is particularly common in several tribes of the ant subfamilies Myrmicinae and Formicinae. Here, we document the occurrence of miniaturized queens (microgynes) in colonies of Ectatomma tuberculatum, an ant belonging to the subfamily Ectatomminae. Behavioral observations and genetic analyses show that microgynes concentrate their reproductive efforts almost exclusively on the production of sexual offspring (microgynes and males), whereas the regular, large queens (macrogynes) produce workers in addition to sexuals. According to mitochondrial and nuclear markers, gene flow between microgynes and macrogynes is extremely limited. Whereas the co-occurrence of microgynes and macrogynes in the related species Ectatomma ruidum constitutes an intraspecific polymorphism associated with alternative dispersal tactics, microgynes found in colonies of E. tuberculatum appear to be a distinct species and to represent the first case of social parasitism in the poneromorph subfamilies of ants. 相似文献
2.
Jürgen Heinze Bernhard Stengl Matthew F. Sledge 《Behavioral ecology and sociobiology》2002,52(1):59-65
Workers in de-queened colonies of the neotropical ant, Pachycondyla cf. inversa, form linear or near-linear dominance hierarchies by violent antennation and biting. In these rank orders, social status and ovarian activity are on average highly correlated. Whereas the presence of a fertile queen appears to be sufficient to prevent workers from laying eggs, fertile workers do not completely control reproduction by their nestmates, suggesting that workers are able to differentiate between an egg-laying queen and an egg-laying worker. Here we show that the composition of cuticular hydrocarbons of egg-laying workers is quantitatively and qualitatively different from that of non-laying workers and resembles the hydrocarbon blend of the queen but does not completely match it. Furthermore, using discriminant analysis, it was possible to distinguish workers with four different classes of ovarian development based only on their cuticular hydrocarbon profiles. Fertility-associated changes in cuticular hydrocarbons may play an important role in the behavioural regulation of reproduction in this ant. 相似文献
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4.
J. Heinze H. Remmert F. L. Boschke D. Reinen L. Jaenicke 《Die Naturwissenschaften》1983,70(11):575-576
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Jürgen Gadau Pia J. Gertsch Jürgen Heinze Pekka Pamilo Bert Hölldobler 《Behavioral ecology and sociobiology》1998,44(1):23-33
Multilocus DNA fingerprinting and microsatellite analysis were used to determine the number of queens and their mating frequencies
in colonies of the carpenter ant, Camponotus ligniperdus (Hymenoptera: Formicidae). Only 1 of 61 analyzed queens was found to be double-mated and the population-wide effective mating
frequency was therefore 1.02. In the studied population, 8 of 21 mature field colonies (38%) contained worker, male, or virgin
queen genotypes which were not compatible with presumed monogyny and therefore suggested oligogyny, i.e., the cooccurrence
of several mutually intolerant queens within one colony. Estimated queen numbers in oligogynous colonies ranged between two
and five. According to the results of the genetic analysis, most of the queens coexisting in oligogynous colonies were not
closely related. Pleometrosis is very rare and queenless colonies adopt mated queens both in the laboratory and field. Therefore,
the most plausible explanation for the origin of oligogynous colonies in C. ligniperdus is the adoption of unrelated queens by orphaned mature colonies. The coexistence of unrelated, but mutually intolerant queens
in C. ligniperdus colonies demonstrates that oligogyny should be considered as a phenomenon distinct from polygyny.
Received: 18 December 1997 / Accepted after revision: 20 June 1998 相似文献
8.
M. Kunter L. Jaenicke J. Heinze W. Jaenicke H. Meinhardt 《Die Naturwissenschaften》1994,81(11):513-517
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Behavioral Ecology and Sociobiology - Predation risk is vital in determining habitat quality. But landscapes of fear are complex and dynamic, such as temperate deciduous forests characterized by... 相似文献
10.
Nathalie Stroeymeyt Elisabeth Brunner Jürgen Heinze 《Behavioral ecology and sociobiology》2007,61(9):1449-1457
Animal societies, including those of humans, are under constant threat by selfish individuals, who attempt to enforce their
own interests at the cost of the group. In the societies of bees, wasps, and ants, such individual selfishness can be prevented
by “policing,” whereby workers or queens impede the reproduction of other individuals by aggression, immobilization, or egg
eating. In this study, we report on a particular kind of reproduction control in the ant Temnothorax unifasciatus, which can be considered as a selfish act itself. We experimentally induced workers to lay eggs by dividing several colonies
into two halves, one with and one without a queen. In queenless colonies, workers established rank orders by aggression and
several top-ranking workers started to reproduce. Upon reunification, egg-laying workers mostly stopped behaving aggressively.
They were neither attacked by the queen nor by random workers, but instead received infrequent, nondestructive, targeted aggression
from a few workers, most of which became fertile when the queen was later removed. The introduction of differentially stained
worker-laid and queen-laid eggs in queenright fragments did not lead to a selective removal of worker-laid eggs. Hence, there
appears to be no collective worker policing in T. unifasciatus. Instead, reproduction appears to be controlled mostly through a few attacks from high-ranking workers, which, in this way,
might attempt to selfishly increase their chances of future reproduction. 相似文献