Mark Nelissen

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Evolutionary theory suggests that maternal grandparents will invest more in their grandchildren than paternal grandparents, due to the difference between the certainty of maternity and the uncertainty of paternity. Most tests of this prediction have tended to use retrospective ratings by grandchildren rather than examining grandparental behaviour. Using a(More)
In a mixed-sex, captive group of hamadryas baboons (Papio hamadryas hamadryas) we investigated whether female grooming relationships are affected by their dominance ranks. Seyfarth's [1977] grooming for support model and Barrett et al.'s [1999] biological market model both predict that in primate groups where competition for monopolizable resources is high,(More)
  • M Nelissen
  • Acta zoologica et pathologica Antverpiensia
  • 1975
The behaviour of Simochromis diagramma, a cichlid fish of Lake Tanganyika, is studied. Seven colour patterns were distinguished, corresponding to well-defined behaviour displays or moods. A description of the aggressive behaviour is given for threatening, fighting and feigned attacking. Two forms of aggression inhibiting displays are described. Further, we(More)
Anthropometric measurements of the breasts and their relevant position taken from fixed skeletal points provide a useful tool in the accurate evaluation of patients preoperatively and the assessment of surgical results. This paper presents the clinical correlation obtained by statistical analysis of the results of measurements of 973 women.
In this paper we present two compatible hypotheses to explain interest in celebrity gossip. The Learning Hypothesis explains interest in celebrity gossip as a by-product of an evolved mechanism useful for acquiring fitness-relevant survival information. The Parasocial Hypothesis sees celebrity gossip as a diversion of this mechanism, which leads individuals(More)
Before the widespread clinical acceptance of mesh skin grafting, expansion of full thickness skin had already been reported. The senior authors, who performed the first mesh skingrafts, have tried several variations of instruments starting with a flat block, later using a roller device with staggered cuts (Mesh Dermatome type I), and further a roller with(More)
Iconic representations (i.e., figurative imagery and realistic art) only started to appear consistently some 45,000 years ago, although humans have been anatomically modern since 200,000–160,000 years ago. What explains this? Some authors have suggested a neurocognitive change took place, leading to a creative explosion, although this has been contested.(More)
  • M Nelissen
  • Acta zoologica et pathologica Antverpiensia
  • 1975
Two types of sounds produced by the cichlid fish Simochromis diagramma, are recorded and analysed. A br-r-r sound, with a main frequency of 200 Hz and a chewing sound with a main frequency of 6,000-10,000 Hz are produced during threatening; the former sound can also be heard during quivering. No sound was recorded with fighting or anxious fishes.
The diurnal rhythm of activity of Meriones unguiculatus (Milne-Edwards, 1867) is examined under natural and artificial light. The activity of 2 animals in captivity was registered actographically. Meriones unguiculatus seems to be more active during the night than during the day and showsed activity in the forenoon was registered.
Skin defects on the nasal dorsum remain a challenge for the plastic surgeon. Because the skin of the glabella and nasion is rather loose, it can be advanced or rotated into the defect at the dorsum of the nose in a one-stage repair. This article reports on an arterialized fronto-nasal island flap of the upper nose, based on only one dorsal nasal artery.