caa a22 4500 469097140 CHVBK 20180323133034.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF00317154 doi (NATIONALLICENCE)springer-10.1007/BF00317154 The dispersal behaviour of the phoretic mite Poecilochirus carabi (Mesostigmata, Parasitidae): adaptation to the breeding biology of its carrier Necrophorus vespilloides (Coleoptera, Silphidae) [Elektronische Daten] [Horst Schwarz, Josef Müller] Summary: When the phoretic mite Poecilochirus carabi reproduces in the brood chamber of its carrier Necrophorus vespilloides, a beetle with biparental brood care, the first deuteronymphs of the new mite generation aggregate on the male beetle. They do not use sex-specific traits to discriminate between male and female beetles in the brood chamber, but traits that are related to the beetles' behaviour and may be displayed by both parent beetles. When the male beetle departs, it carries virtually all deuteronymphs then present in the brood chamber. Deuteronymphs that develop later congregate on the female, which leaves the crypt some days after the male. Only those deuteronymphs that miss the female's departure disperse on the beetle larvae, meaning they have to wait in their pupal chambers until the beetles have completed their development. On average, 86% of the deuteronymphs leave the brood chamber on the parent beetles, thereby gaining the advantage of an early departure. As soon as their carrier arrives at one of the beetles' meeting places, the deuteronymphs can transfer between the beetles present. Choice experiments revealed that the deuteronymphs tend to even out density differences between congregating carriers, and prefer sexually mature to immature beetles. Therefore, transferring between beetles results in a dispersion of deuteronymphs on the sexually mature beetles of the population. Springer-Verlag, 1992 Dispersal nationallicence Phoresy nationallicence Sex-preference nationallicence Poecilochirus nationallicence Necrophorus nationallicence Schwarz Horst Lehrstuhl für Evolutionsforschung der Universität, Universitätsstr. 25, W-4800, Bielefeld 1, Federal Republic of Germany aut Müller Josef Lehrstuhl für Evolutionsforschung der Universität, Universitätsstr. 25, W-4800, Bielefeld 1, Federal Republic of Germany aut Oecologia Springer-Verlag 89/4(1992-04-01), 487-493 0029-8549 89:4<487 1992 89 442 https://doi.org/10.1007/BF00317154 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317154 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Schwarz Horst Lehrstuhl für Evolutionsforschung der Universität, Universitätsstr. 25, W-4800, Bielefeld 1, Federal Republic of Germany aut NATIONALLICENCE 700 1- Müller Josef Lehrstuhl für Evolutionsforschung der Universität, Universitätsstr. 25, W-4800, Bielefeld 1, Federal Republic of Germany aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 89/4(1992-04-01), 487-493 0029-8549 89:4<487 1992 89 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer