Showing papers in "Animal Behaviour in 1970"

TL;DR: In this paper, the properties of various functions which have been used for assessing roles of mother and infant in maintaining mutual proximity, and in particular their dependence on absolute activity levels, are examined.

TL;DR: As young males from litters born in the enclosure became mature they established their own territories without the intervention of the artificial barrier, related to the establishment of a social order: dominant mice became territory holders.

TL;DR: The relations between dominance status, affiliative and kinship relations, social subterfuge and competition-contingent cooperation are discussed in an attempt to outline the dynamics of social change within relatively stable group structures.

TL;DR: The validity of the Skinner box was assessed as a means of obtaining detailed records of feeding behaviour and a brief hypothesis concerning the control of food intake in the fowl was formulated.

TL;DR: Observations were made on the Macaca mulatta colony on the island of Cayo Santiago over a period that included two reproductive cycles, and the frequency of aggressive behaviour was found to fluctuate cyclically as a function of the colony's reproductive state.

TL;DR: In this paper, the role of the vibrissae in visual cliff performance of rats was investigated and it was shown that tactual cues are prepotent over visual ones for the rat when conflicting information from both sensory modalities is present.

TL;DR: Morphological adaptations for either herbivorous or carnivorous feeding can be advantageous for mouthbreeding, and apparently no special adaptations have evolved in the mouth for this behaviour.

TL;DR: It is proposed as a hypothesis that the time spent by a bee at a food source or at the hive in each foraging cycle results from the balance between two tendencies: to stay and to go.

TL;DR: The regularisation of the discharge activity is thought to be involved in the fish's electrolocating system whereas frequency variations are considered as being involved in both the locating system and as communication signals among weakly electric fish.

TL;DR: It was found that in the majority of cases a very similar pattern of behaviour was established, however, wide variations were found to occur in the times to first suckling in those calves which were observed to suckle during the observation period.

TL;DR: Using a dual-chambered maternity cage the time that a lactating rat spent with its litter was recorded continuously from birth of the litter until weaning, there was a precise 24-hr rhythm in maternal behaviour under a 12-hr light-dark regimen.

TL;DR: The authors found that guinea-pigs showed a preference for the rearing odour at 16 or 23 days of age when presented with a 5hr choice of N, Eb or Ac stimulus animals.

TL;DR: Behavioural experiments were performed on the butterfly, Heliconius charltonius Linn, to determine the spontaneous feeding preference for variously coloured model flowers and the ability of these animals to learn to modify such preference through conditioning through conditioning.

TL;DR: The authors found that males of D. melanogaster that were confined with a female touched and oriented toward other flies more frequently than did males not exposed to a female and that the odour of males caused some increase in the frequency of touching and orientation behavior among exposed males.

TL;DR: The Mongolian gerbil regularly marks objects in an open field by rubbing them with a midventral sebaceous scent gland as discussed by the authors, which is positively correlated with urination and defecation, and suggested that all three of these activities may in some situations be territorial scent marking responses.

TL;DR: It was concluded that spontaneous alternation may be related to orientation but not to exploratory behaviour in naive goldfish, and the effects of time on these parameters in other species are assessed.

TL;DR: Investigations on a population of the Sergant Major, Abudefduf saxatilis (Pomacentridae), performed along the coral reef of Eilat, Gulf of Aqaba, placed emphasis on the schooling behaviour and reproduction, especially on the analysis of the male's action inventory, their frequencies and signicance.

TL;DR: The feeding of the young by all the members of the Mexican jay flock was studied in the field under natural conditions by colour banding the flock members as mentioned in this paper, with 38 to 53 percent of the feeding visits by the parents and the remainder by altruistic jays who were not parents of the nestlings they were feeding.

TL;DR: Cross-fostered animals were profoundly influenced in their open field performances, social preferences and social behaviours as a result of being cross- fostered to a different species at birth.

TL;DR: Experiments suggest that the male pheromone is acting as an aphrodisiac, and may also in some species have a species isolating function.

TL;DR: The auditory capacities of two species of characid fish, Astyanax mexicanus and A. jordani, were determined using avoidance conditioning techniques and substantiate earlier findings that they can hear a wider range of sounds and lower intensities than non-ostario-physines.

TL;DR: A film loop apparatus was devised to test a possible social function of the display of Anolis nebulosus; an increasing proportion of females approached the ‘normal’ displaying image as the film loops of altered displays contained a greater number of changes.

TL;DR: In this paper, the development and maintenance of nest soliciting was studied in Barbary dove males and groups of males were castrated and treated intramuscularly with testosterone propionate or oestradiol monobenzoate (300 ug per day in saline) for 16 successive days with females.

TL;DR: The overall viewpoint generated by this study is that laughing gulls first space their nests because adults orient to precise features of the environment; then, further spacing may depend upon a bird's response to its neighbours.

TL;DR: Females are able to detect and parasitize dead hosts in logs, demonstrating that sound is not a necessary stimulus for drilling, and is not essential for host detection.

TL;DR: The same visual orientational systems which allow these bats to return rapidly during homing experiments may also facilitate flights to and from feeding areas and aid in the search for new sources of food as discussed by the authors.

TL;DR: In the long run, the empty and emetic seeds were more effective in eliciting stable avoidance than was the salted mealworm seed, which will determine the degree of protection from predation enjoyed by that prey.

TL;DR: Surgical removal of the crop does not prevent the maintenance of normal body weight nor reduce food intake in the chicken when food is continuously available, however, when feeding time is restricted cropectomized birds eat less than normal.

TL;DR: The causal and functional aspects of a display known as dorsal pricking performed during the courtship of the three-spined stickleback (Gasterosteus aculeatus) were examined in this article.

TL;DR: Interactions at the individual level, involving aggressive encounters and possibly other factors, form the basis of the interactions which have been demonstrated at the population level in the wild.