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Author |
McComb, K.; Clutton-Brock, T. |
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Title |
Is mate choice copying or aggregation responsible for skewed distributions of females on leks? |
Type |
Journal Article |
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Year |
1994 |
Publication |
Proceedings. Biological sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
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Volume |
255 |
Issue |
1342 |
Pages |
13-19 |
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Keywords |
Animals; Deer/*physiology; Estrus/physiology; Female; Male; Phenotype; Sexual Behavior, Animal/*physiology; Territoriality |
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Abstract |
In several lek-breeding populations of birds and mammals, females arriving on leks tend to join males that already have females in their territories. This might occur either because females have an evolved preference for mating with males that are attractive to other females, or because they join groups of other females to obtain greater safety from predation or dangerous harassment by males. We have previously used controlled experiments to show that oestrous fallow deer females join males with established harems because they are attracted to female groups rather than to the males themselves. Here we demonstrate that the preference for males with females over males without females is specific to oestrous females and weak or absent in anoestrous ones, and that it is not associated with a preference for mating with males that have previously been seen to mate with other females. Furthermore, oestrous females given the choice between males that do not already have females with them show no significant preference for antlered over deantlered males or for older males over younger ones. We conclude that female attraction to other females on the lek is likely to be an adaptation to avoiding harassment in mixed-sex herds. In this situation, a male's ability to maintain the cohesion of his harem may be the principal cause of variation in mating success between males. |
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Department of Zoology, University of Cambridge, U.K |
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0962-8452 |
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PMID:8153135 |
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no |
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Serial |
1823 |
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Author |
Hill, S.E.; Ryan, M.J. |
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Title |
The role of model female quality in the mate choice copying behaviour of sailfin mollies |
Type |
Journal Article |
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Year |
2006 |
Publication |
Biology letters |
Abbreviated Journal |
Biol Lett |
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Volume |
2 |
Issue |
2 |
Pages |
203-205 |
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Keywords |
Animals; *Choice Behavior; Female; Male; *Mating Preference, Animal; Poecilia/*physiology |
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Abstract |
Female mate choice copying is a socially mediated mate choice behaviour, in which a male's attractiveness to females increases if he was previously chosen by another female as a mate. Although copying has been demonstrated in numerous species, little is known about the specific benefits it confers to copying females. Here we demonstrate that the mate choice behaviour of female sailfin mollies (Poecilia latipinna) is influenced by the phenotypic quality of model females with whom males are observed consorting. Test females choosing between two males of similar body length were found to significantly increase time spent with previously non-preferred males after having observed them with a relatively high-quality female. Conversely, females were found to significantly decrease time spent with previously preferred males after having observed them with a relatively low-quality female. Female mate choice copying might be maintained by selection based on the heuristic value it provides females choosing between males whose quality differences are not easily distinguishable. |
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University of Texas at Austin, Department of Psychology, 1 University Station A8000, Austin, TX 78712, USA. sehill@mail.utexas.edu |
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1744-9561 |
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PMID:17148362 |
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1820 |
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Author |
Uehara, T.; Yokomizo, H.; Iwasa, Y. |
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Title |
Mate-choice copying as Bayesian decision making |
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Journal Article |
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Year |
2005 |
Publication |
The American naturalist |
Abbreviated Journal |
Am Nat |
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Volume |
165 |
Issue |
3 |
Pages |
403-410 |
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Keywords |
Animals; *Bayes Theorem; *Choice Behavior; Female; Male; *Models, Biological; *Sexual Behavior, Animal |
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Abstract |
Mate-choice copying by females has been reported in fishes (e.g., guppies) and lekking birds. Presumably, females assess males' quality using both information from direct observation of males and information acquired by observing other females' choices. Here, we study mathematically the conditions under which mate-choice copying is advantageous on the basis of Bayesian decision theory. A female may observe the mate choice of another female, called the model female, who has performed an optimal choice based on her own judgment. The conditions required for the focal female to choose the same mate as that chosen by the model female should depend on the male's appearance to her, the reliability of her own judgment of male quality, and the reliability of the model females. When three or more females are involved, the optimal mate choice critically depends on whether multiple model females make decisions independently or they themselves copy the choices of others. If two equally reliable females choose different males, the choice of the second female, made knowing the choice of the first, should have a stronger effect on the choice of the third (focal) female. This “last-choice precedence” should be tested experimentally. |
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Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka 812-8581, Japan. uehara@bio-math.biology.kyushu-u.ac.jp |
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1537-5323 |
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Notes |
PMID:15729669 |
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no |
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Call Number |
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Serial |
1821 |
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Author |
Dugatkin, L.A.; Godin, J.G. |
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Title |
Reversal of female mate choice by copying in the guppy (Poecilia reticulata) |
Type |
Journal Article |
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Year |
1992 |
Publication |
Proceedings. Biological sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
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Volume |
249 |
Issue |
1325 |
Pages |
179-184 |
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Keywords |
Acclimatization; Animals; *Choice Behavior; Female; Male; Poecilia; *Sexual Behavior, Animal |
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Abstract |
Ever since Fisher (1958) formalized models of sexual selection, female mate choice has been assumed to be a genetically determined trait. Females, however, may also use social cues to select mates. One such cue might be the mate choice of conspecifics. Here we report the first direct evidence that a female's preference for a particular male can in fact be reversed by social cues. In our experiments using the Trinidadian guppy (Poecilia reticulata), this reversal was mediated by mate-copying opportunities, such that a female (the 'focal' female) is given the opportunity to choose between two males, followed by a period in which she observes a second female (the 'model' female) displaying a preference for the male she herself did not prefer initially. When allowed to choose between the same males a second time, compared with control tests, a significant proportion of focal females reversed their mate choice and copied the preference of the model female. These results provide strong evidence for the role of non-genetic factors in sexual selection and underlie the need for new models of sexual selection that explicitly incorporate both genetic and cultural aspects of mate choice. |
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Department of Biology, Mount Allison University, Sackville, New Brunswick, Canada |
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0962-8452 |
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Notes |
PMID:1360679 |
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no |
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Call Number |
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Serial |
1824 |
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Author |
Larose, C.; Richard-Yris, M.-A.; Hausberger, M.; Rogers, L.J. |
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Title |
Laterality of horses associated with emotionality in novel situations |
Type |
Journal Article |
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Year |
2006 |
Publication |
Laterality |
Abbreviated Journal |
Laterality |
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Volume |
11 |
Issue |
4 |
Pages |
355-367 |
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Keywords |
Affect/*physiology; Animals; Brain/*physiology; Female; Functional Laterality/*physiology; Horses; Male; *Social Behavior; *Social Environment |
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Abstract |
We have established that lateral biases are characteristic of visual behaviour in 65 horses. Two breeds, Trotters and French Saddlebreds aged 2 to 3, were tested on a novel object test. The main finding was a significant correlation between emotionality index and the eye preferred to view the novel stimulus: the higher the emotionality, the more likely that the horse looked with its left eye. The less emotive French Saddlebreds, however, tended to glance at the object using the right eye, a tendency that was not found in the Trotters, although the emotive index was the same for both breeds. The youngest French Saddlebreds did not show this trend. These results are discussed in relation to the different training practices for the breeds and broader findings on lateralisation in different species. |
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Universite de Rennes 1, France |
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1357-650X |
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Notes |
PMID:16754236 |
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no |
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Equine Behaviour @ team @ room B 3.029 |
Serial |
1826 |
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Author |
Ulloa, A.; Gonzalez-Ceron, L.; Rodriguez, M.H. |
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Title |
Host selection and gonotrophic cycle length of Anopheles punctimacula in southern Mexico |
Type |
Journal Article |
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Year |
2006 |
Publication |
Journal of the American Mosquito Control Association |
Abbreviated Journal |
J Am Mosq Control Assoc |
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Volume |
22 |
Issue |
4 |
Pages |
648-653 |
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Keywords |
Animals; Anopheles/*physiology; Appetitive Behavior/*physiology; Cattle; Female; Horses; Humans; Insect Vectors/*physiology; Malaria/transmission; Mexico; Oviparity/*physiology; Seasons; Time Factors; Vitellogenesis/physiology |
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Abstract |
The host preference, survival rates, and length of the gonotrophic cycle of Anopheles punctimacula was investigated in southern Mexico. Mosquitoes were collected in 15-day separate experiments during the rainy and dry seasons. Daily changes in the parous-nulliparous ratio were recorded and the gonotrophic cycle length was estimated by a time series analysis. Anopheles punctimacula was most abundant during the dry season and preferred animals to humans. The daily survival rate in mosquitoes collected in animal traps was 0.96 (parity rate = 0.86; gonotrophic cycle = 4 days). The length of gonotrophic cycle of 4 days was estimated on the base of a high correlation coefficient value appearing every 4 days. The minimum time estimated for developing mature eggs after blood feeding was 72 h. The proportion of mosquitoes living enough to transmit Plasmodium vivax malaria during the dry season was 0.35. |
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Centro de Investigacion de Paludismo, Instituto Nacional de Salud Publica, Apartado Postal 537, Tapachula, Chiapas 30700, Mexico |
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8756-971X |
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Notes |
PMID:17304932 |
Approved |
no |
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Call Number |
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Serial |
1830 |
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Author |
Elhay, M.; Newbold, A.; Britton, A.; Turley, P.; Dowsett, K.; Walker, J. |
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Title |
Suppression of behavioural and physiological oestrus in the mare by vaccination against GnRH |
Type |
Journal Article |
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Year |
2007 |
Publication |
Australian Veterinary Journal |
Abbreviated Journal |
Aust Vet J |
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Volume |
85 |
Issue |
1-2 |
Pages |
39-45 |
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Keywords |
Animals; Antibodies/blood; Estradiol/blood; *Estrus/drug effects/physiology; Female; Gonadotropin-Releasing Hormone/*immunology/*pharmacology; Horses/*physiology; Luteinizing Hormone/blood; Ovulation/*drug effects/physiology; Progesterone/blood; Safety; Sexual Behavior, Animal/drug effects/physiology; Time Factors; Vaccination/veterinary |
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Abstract |
OBJECTIVE: To examine the immunogenicity of an equine immunocontraceptive vaccine and its efficacy in controlling hormone-related behaviour. DESIGN: A total of 24 mares at two sites in Australia were vaccinated with an immunocontraceptive vaccine comprising gonadotrophin releasing hormone (GnRH) conjugated to a carrier protein in immunostimulating complex as an adjuvant. Twelve animals at each site received a placebo of adjuvant alone and served as controls for seasonal oestrus, hormonal and behaviour patterns. Animals were observed for injection site reactions, ovarian and follicular activity, and serum levels of antibody, 17beta-oestradiol and progesterone in the weeks following vaccination. Mares were also examined for oestrous behaviour by teasing with a stallion. RESULTS: All mares responded to vaccination. Two weeks following the second vaccination there was a peak in antibody response to GnRH that declined gradually over the following weeks. Commensurate with the elevated anti-GnRH antibody there was a marked effect on ovarian activity with a reduction in 17beta-oestradiol and progesterone levels in the 24 vaccinated mares. There was also a reduction of oestrus-related behaviour as determined by a teaser stallion. This effect lasted a minimum of 3 months and correlated with the initial level of antibody response. CONCLUSION: Following a conventional two-dose immunisation regime this commercially available equine immunocontraceptive vaccine was effective at inhibiting oestrous behaviour for at least 3 months. This vaccine has a high level of safety since there were no significant local reactions nor were there any adverse systemic responses to vaccination. |
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Address |
Veterinary Medicines Research and Development, Pfizer Animal Health, Parkville, VIC 3052. Martin.Elhay@pfizer.com |
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English |
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ISSN |
0005-0423 |
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Notes |
PMID:17300452 |
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no |
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Serial |
1831 |
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Author |
Meral, Y.; Cakiroglu, D.; Sancak, A.A.; Cyftcy, G.; Karabacak, A. |
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Title |
Relationships between serum serotonin and serum lipid levels, and aggression in horses |
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Journal Article |
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Year |
2007 |
Publication |
DTW. Deutsche Tierarztliche Wochenschrift |
Abbreviated Journal |
Dtsch Tierarztl Wochenschr |
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Volume |
114 |
Issue |
1 |
Pages |
30-32 |
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Keywords |
*Aggression; Animals; Behavior, Animal/*physiology; Case-Control Studies; Female; Horses/*blood; Lipids/*blood; Male; Serotonin/*blood |
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Abstract |
Levels of serum serotonin and serum lipids--triglyceride, total cholesterol, low-density lipoprotein, high-density lipoprotein and very low-density lipoprotein, were determined in normal horses and horses diagnosed with aggression on the basis of a questionnaire survey. Blood serotonin levels in aggressive horses were found to be significantly lower than in non-aggressive horses (P < 0.01), but no association was found with respect to blood lipids. |
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Address |
Department of Internal Diseases, Faculty of Veterinary Medicine, University of Ondokuz Mayis, Samsun, Turkey. ymeral@omu.edu.t |
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English |
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0341-6593 |
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Notes |
PMID:17252934 |
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no |
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Call Number |
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Serial |
1835 |
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Author |
Krcmar, S.; Mikuska, A.; Merdic, E. |
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Title |
Response of Tabanidae (Diptera) to different natural attractants |
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Journal Article |
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Year |
2006 |
Publication |
Journal of Vector Ecology : Journal of the Society for Vector Ecology |
Abbreviated Journal |
J Vector Ecol |
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Volume |
31 |
Issue |
2 |
Pages |
262-265 |
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Keywords |
Animals; Appetitive Behavior/*physiology; Cattle/urine; Diptera/*physiology; Female; Horses/urine; Insect Control/methods; Sheep/urine; Swine/urine; Urine/*physiology |
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Abstract |
The response of female tabanids to natural attractants was studied in the Monjoros Forest along the Nature Park Kopacki rit in eastern Croatia. Tabanids were caught in canopy traps baited with either aged cow, horse, sheep, or pig urine and also in unbaited traps. Tabanids were collected in a significantly higher numbers in traps baited with natural attractants compared to unbaited traps. The number of females of Tabanus bromius, Tabanus maculicornis, Tabanus tergestinus, and Hybomitra bimaculata collected from canopy traps baited with cow urine and traps baited with other natural attractants differed significantly. Females of Haematopota pluvialis were also collected more frequently in canopy traps baited with aged cow urine than in those with aged horse urine, but this difference was not significant. However, the number of females of Haematopota pluvialis collected from canopy traps baited with other natural attractants (sheep and pig urine) differed significantly when compared with aged cow urine baited traps. Canopy traps baited with aged cow urine collected significantly more Tabanus sudeticus than did traps baited with aged pig urine. Finally, the aged cow urine baited canopy traps collected 51 times more tabanids than unbaited traps, while aged horse, aged sheep, and aged pig urine baited traps collected 36, 30, and 22 times as many tabanids, respectively, than unbaited traps. |
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Address |
Department of Biology, JJ Strossmayer University, Lj. Gaja 6, HR-31000 Osijek, Croatia |
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English |
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ISSN |
1081-1710 |
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Notes |
PMID:17249343 |
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no |
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Call Number |
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Serial |
1836 |
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Author |
Bentley, T.; Macky, K.; Edwards, J. |
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Title |
Injuries to New Zealanders participating in adventure tourism and adventure sports: an analysis of Accident Compensation Corporation (ACC) claims |
Type |
Journal Article |
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Year |
2006 |
Publication |
The New Zealand Medical Journal |
Abbreviated Journal |
N Z Med J |
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Volume |
119 |
Issue |
1247 |
Pages |
U2359 |
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Keywords |
Adolescent; Adult; Aged; Athletic Injuries/*economics/*epidemiology; Back Injuries/epidemiology; Bicycling/economics/injuries; Female; Humans; Insurance Claim Reporting/*statistics & numerical data; Insurance, Liability/*utilization; Male; Middle Aged; Mountaineering/economics/injuries; New Zealand/epidemiology; *Risk-Taking; Skiing/economics/injuries; Sprains and Strains/epidemiology |
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Abstract |
AIMS: The aim of this study was to examine the involvement of adventure tourism and adventure sports activity in injury claims made to the Accident Compensation Corporation (ACC). METHODS: Epidemiological analysis of ACC claims for the period, July 2004 to June 2005, where adventure activities were involved in the injury. RESULTS: 18,697 adventure tourism and adventure sports injury claims were identified from the data, representing 28 activity sectors. Injuries were most common during the summer months, and were most frequently located in the major population centres. The majority of injuries were incurred by claimants in the 20-50 years age groups, although claimants over 50 years of age had highest claims costs. Males incurred 60% of all claims. Four activities (horse riding, mountain biking, tramping/hiking, and surfing) were responsible for approximately 60% of all adventure tourism and adventure sports-related injuries. Slips, trips, and falls were the most common injury initiating events, and injuries were most often to the back/spine, shoulder, and knee. CONCLUSIONS: These findings suggest the need to investigate whether regulatory intervention in the form of codes of practice for high injury count activities such as horse riding and mountain biking may be necessary. Health promotion messages and education programs should focus on these and other high-injury risk areas. Improved risk management practices are required for commercial adventure tourism and adventure sports operators in New Zealand if safety is to be improved across this sector. |
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Address |
Department of Management and International Business Massey University, Auckland. T.A.Bentley@massey.ac.nz |
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English |
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1175-8716 |
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Notes |
PMID:17195852 |
Approved |
no |
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Call Number |
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Serial |
1843 |
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