22 research outputs found
AnalĂ˝za faktorĹŻ urÄŤujĂcĂch lidskĂ© preference a tĂm i ĂşsilĂ vkládanĂ© do ochrany ĹľivoÄŤišnĂ˝ch druhĹŻ
Recently, it was reported that humans treat animals that they perceive as aesthetically attractive unequally to the "ugly" ones, turning more attention to them and setting more conservation programs for their protection. The aim of this thesis was to investigate the issue focusing around animal beauty in more detail by examining human preferences towards one of the most popular animal taxon, the birds. In three subsequent studies, we assessed human preferences towards selected bird species: all members of the order of parrots, randomly selected representatives of all non- passerine bird families, and all members of the vividly colored passerine family Pittidae. The first study revealed that the preferred parrots were kept in zoos in higher numbers, regardless of their conservation priority (IUCN status). We discussed possible consequences of this finding and the benefits that may arise in the light of animal conservation if this bias in species preferences was to be considered by conservation specialists. We also found that people preferred long-tailed parrots possessing blue and yellow colors over green ones, which were probably perceived as dull and uninteresting as the majority of the parrots are fully or partially green. In the next two studies, we found that shape, pattern, and overall...V poslednĂch letech se ukazuje, Ĺľe lidĂ© na zvĂĹ™ata, která povaĹľujĂ za atraktivnĂ, pohlĂžà ponÄ›kud odlišnÄ›, neĹľ na zvĂĹ™ata "ošklivá". Ta krásná se těšà vÄ›tšà pozornosti a vyššĂm poÄŤtem ochranářsky zaměřenĂ˝ch projektĹŻ. CĂlem tĂ©to studie proto bylo prozkoumat fenomĂ©n zvĂĹ™ecĂ krásy do detailĹŻ, a to na pĹ™Ăkladu populárnĂho zvĂĹ™ecĂho taxonu - ptákĹŻ. Ve tĹ™ech po sobÄ› jdoucĂch studiĂch jsme změřili lidskĂ© preference vĹŻÄŤi rĹŻznĂ˝m skupinám ptákĹŻ: prvnÄ› to byli všichni zástupci papouškĹŻ, dále náhodnÄ› vybranĂ reprezentanti ze všech nepÄ›vÄŤĂch ÄŤeledĂ, a nakonec pity, pestrobarevná skupina pÄ›vcĹŻ ÄŤeledi Pittidae. PrvnĂ studie ukázala, Ĺľe papoušci, kterĂ© lidĂ© povaĹľujĂ za krásnĂ©, jsou v zoologickĂ˝ch zahradách chováni ve vyššĂch poÄŤtech, nezávisle na statutu jejich ohroĹľenĂ (status IUCN). V ÄŤlánku diskutujeme moĹľnĂ© následky tĂ©to skuteÄŤnosti a takĂ© vĂ˝hody, kterĂ˝ch je moĹľno dosáhnout, pokud budou ochranáři brát v potaz dĹŻleĹľitost krásy jakoĹľto faktoru zasahujĂcĂho do problematiky ochrany zvĂĹ™at. Dále jsme zjistili, Ĺľe lidĂ© preferujĂ zejmĂ©na dlouhoocasĂ© papoušky, kteřà jsou modĹ™e ÄŤi ĹľlutÄ› zbarvenĂ. Zelená barva naopak papouškĹŻm na kráse ubĂrala, coĹľ vysvÄ›tlujeme tĂm, Ĺľe vÄ›tšina papouškĹŻ je zelená a tudĂĹľ mĹŻĹľe respondentĹŻm pĹ™ipadat nezajĂmavá. V následujĂcĂch dvou studiĂch se ukázalo, Ĺľe lidskĂ© preference ptákĹŻ jsou...Department of ZoologyKatedra zoologieFaculty of SciencePĹ™ĂrodovÄ›decká fakult
Being Attractive Brings Advantages: The Case of Parrot Species in Captivity
Background: Parrots are one of the most frequently kept and bred bird orders in captivity. This increases poaching and thus the potential importance of captive populations for rescue programmes managed by zoos and related institutions. Both captive breeding and poaching are selective and may be influenced by the attractiveness of particular species to humans. In this paper, we tested the hypothesis that the size of zoo populations is not only determined by conservation needs, but also by the perceived beauty of individual parrot species assessed by human observers. Methodology/Principal Findings: For the purpose of data collection, we defined four sets of species (40 parrots, 367 parrots, 34 amazons, 17 macaws). Then, we asked 776 human respondents to evaluate parrot pictures of the selected species according to perceived beauty and we analyzed its association with color and morphological characters. Irrespective of the species set, we found a good agreement among the respondents. The preferred species tended to be large, colorful, and long-tailed. Conclusions/Significance: We repeatedly confirmed significant, positive association between the perceived beauty and the size of worldwide zoo population. Moreover, the range size and body size appeared to be significant predictors of zoo population size. In contrast, the effects of other explanatory variables, including the IUCN (International Union for Conservation of Nature) listing, appeared insignificant. Our results may suggest that zoos preferentially keep beautifu
Analysis of factors affecting human preferences and thus effort given to the conservation of animal species
Recently, it was reported that humans treat animals that they perceive as aesthetically attractive unequally to the "ugly" ones, turning more attention to them and setting more conservation programs for their protection. The aim of this thesis was to investigate the issue focusing around animal beauty in more detail by examining human preferences towards one of the most popular animal taxon, the birds. In three subsequent studies, we assessed human preferences towards selected bird species: all members of the order of parrots, randomly selected representatives of all non- passerine bird families, and all members of the vividly colored passerine family Pittidae. The first study revealed that the preferred parrots were kept in zoos in higher numbers, regardless of their conservation priority (IUCN status). We discussed possible consequences of this finding and the benefits that may arise in the light of animal conservation if this bias in species preferences was to be considered by conservation specialists. We also found that people preferred long-tailed parrots possessing blue and yellow colors over green ones, which were probably perceived as dull and uninteresting as the majority of the parrots are fully or partially green. In the next two studies, we found that shape, pattern, and overall..
How evolution of coloration in parrots (Psittaciformes) affects species conservation through human preferences
Each year, several new species are recognized as threatened or endangered. Today's worldwide zoos and aquariums are highly concerned in their conservation and the species kept in large numbers have high chances for possible future reintroduction. However, the selection of the species kept is decided by men and as such can be affected by human aesthetic preferences. The aim of this thesis was to test the hypothesis that zoos preferentially keep species that are attractive rather than endangered, using the parrot family (Psittaciformes) as an example. We collected data from 460 human respondents who evaluated the attractiveness of parrots presented on painted illustrations. After analyzing which traits affect the perceived beauty we found that humans prefer parrots that are big, long-tailed and colourful (blue, orange and yellow). There was a considerable agreement among the respondents. We repeatedly confirmed significant positive association between the perceived beauty and the size of worldwide zoo population. In addition of perceived beauty, area of distribution and body size appeared significant predictors of zoo population size. In contrast, the effects of conservation status and taxonomic uniqueness appeared insignificant. Our results suggest that zoos preferentially keep beautiful parrots and pay less..
Evolution of avian coloration: phylogenetic analysis in selected taxa of parrots
Department of ZoologyKatedra zoologieFaculty of SciencePĹ™ĂrodovÄ›decká fakult
Evolution of avian coloration: phylogenetic analysis in selected taxa of parrots
Department of ZoologyKatedra zoologieFaculty of SciencePĹ™ĂrodovÄ›decká fakult
AnalĂ˝za faktorĹŻ urÄŤujĂcĂch lidskĂ© preference a tĂm i ĂşsilĂ vkládanĂ© do ochrany ĹľivoÄŤišnĂ˝ch druhĹŻ
Recently, it was reported that humans treat animals that they perceive as aesthetically attractive unequally to the "ugly" ones, turning more attention to them and setting more conservation programs for their protection. The aim of this thesis was to investigate the issue focusing around animal beauty in more detail by examining human preferences towards one of the most popular animal taxon, the birds. In three subsequent studies, we assessed human preferences towards selected bird species: all members of the order of parrots, randomly selected representatives of all non- passerine bird families, and all members of the vividly colored passerine family Pittidae. The first study revealed that the preferred parrots were kept in zoos in higher numbers, regardless of their conservation priority (IUCN status). We discussed possible consequences of this finding and the benefits that may arise in the light of animal conservation if this bias in species preferences was to be considered by conservation specialists. We also found that people preferred long-tailed parrots possessing blue and yellow colors over green ones, which were probably perceived as dull and uninteresting as the majority of the parrots are fully or partially green. In the next two studies, we found that shape, pattern, and overall...V poslednĂch letech se ukazuje, Ĺľe lidĂ© na zvĂĹ™ata, která povaĹľujĂ za atraktivnĂ, pohlĂžà ponÄ›kud odlišnÄ›, neĹľ na zvĂĹ™ata "ošklivá". Ta krásná se těšà vÄ›tšà pozornosti a vyššĂm poÄŤtem ochranářsky zaměřenĂ˝ch projektĹŻ. CĂlem tĂ©to studie proto bylo prozkoumat fenomĂ©n zvĂĹ™ecĂ krásy do detailĹŻ, a to na pĹ™Ăkladu populárnĂho zvĂĹ™ecĂho taxonu - ptákĹŻ. Ve tĹ™ech po sobÄ› jdoucĂch studiĂch jsme změřili lidskĂ© preference vĹŻÄŤi rĹŻznĂ˝m skupinám ptákĹŻ: prvnÄ› to byli všichni zástupci papouškĹŻ, dále náhodnÄ› vybranĂ reprezentanti ze všech nepÄ›vÄŤĂch ÄŤeledĂ, a nakonec pity, pestrobarevná skupina pÄ›vcĹŻ ÄŤeledi Pittidae. PrvnĂ studie ukázala, Ĺľe papoušci, kterĂ© lidĂ© povaĹľujĂ za krásnĂ©, jsou v zoologickĂ˝ch zahradách chováni ve vyššĂch poÄŤtech, nezávisle na statutu jejich ohroĹľenĂ (status IUCN). V ÄŤlánku diskutujeme moĹľnĂ© následky tĂ©to skuteÄŤnosti a takĂ© vĂ˝hody, kterĂ˝ch je moĹľno dosáhnout, pokud budou ochranáři brát v potaz dĹŻleĹľitost krásy jakoĹľto faktoru zasahujĂcĂho do problematiky ochrany zvĂĹ™at. Dále jsme zjistili, Ĺľe lidĂ© preferujĂ zejmĂ©na dlouhoocasĂ© papoušky, kteřà jsou modĹ™e ÄŤi ĹľlutÄ› zbarvenĂ. Zelená barva naopak papouškĹŻm na kráse ubĂrala, coĹľ vysvÄ›tlujeme tĂm, Ĺľe vÄ›tšina papouškĹŻ je zelená a tudĂĹľ mĹŻĹľe respondentĹŻm pĹ™ipadat nezajĂmavá. V následujĂcĂch dvou studiĂch se ukázalo, Ĺľe lidskĂ© preference ptákĹŻ jsou...Department of ZoologyKatedra zoologieFaculty of SciencePĹ™ĂrodovÄ›decká fakult
Analysis of factors affecting human preferences and thus effort given to the conservation of animal species
Recently, it was reported that humans treat animals that they perceive as aesthetically attractive unequally to the "ugly" ones, turning more attention to them and setting more conservation programs for their protection. The aim of this thesis was to investigate the issue focusing around animal beauty in more detail by examining human preferences towards one of the most popular animal taxon, the birds. In three subsequent studies, we assessed human preferences towards selected bird species: all members of the order of parrots, randomly selected representatives of all non- passerine bird families, and all members of the vividly colored passerine family Pittidae. The first study revealed that the preferred parrots were kept in zoos in higher numbers, regardless of their conservation priority (IUCN status). We discussed possible consequences of this finding and the benefits that may arise in the light of animal conservation if this bias in species preferences was to be considered by conservation specialists. We also found that people preferred long-tailed parrots possessing blue and yellow colors over green ones, which were probably perceived as dull and uninteresting as the majority of the parrots are fully or partially green. In the next two studies, we found that shape, pattern, and overall..
Human Preferences for Colorful Birds: Vivid Colors or Pattern?
In a previous study, we found that the shape of a bird, rather than its color, plays a major role in the determination of human preferences. Thus, in the present study, we asked whether the preferences of human respondents towards uniformly shaped, colorful birds are determined by pattern rather than color. The experimental stimuli were pictures of small passerine birds of the family Pittidae possessing uniform shape but vivid coloration. We asked 200 participants to rank 43 colored and 43 identical, but grayscaled, pictures of birds. To find the traits determining human preferences, we performed GLM analysis in which we tried to explain the mean preference ranks and PC axes by the following explanatory variables: the overall lightness and saturation, edges (pattern), and the portion of each of the basic color hues. The results showed that the mean preference ranks of the grayscale set is explained mostly by the birds' pattern, whereas the colored set ranking is mostly determined by the overall lightness. The effect of colors was weaker, but still significant, and revealed that people liked blue and green birds. We found no significant role of the color red, the perception of which was acquired relatively recently in evolution
Mammalian Collection on Noah's Ark: The Effects of Beauty, Brain and Body Size
<div><p>The importance of today's zoological gardens as the so-called “Noah's Ark” grows as the natural habitat of many species quickly diminishes. Their potential to shelter a large amount of individuals from many species gives us the opportunity to reintroduce a species that disappeared in nature. However, the selection of animals to be kept in zoos worldwide is highly selective and depends on human decisions driven by both ecological criteria such as population size or vulnerability and audience-driven criteria such as aesthetic preferences. Thus we focused our study on the most commonly kept and bred animal class, the mammals, and we asked which factors affect various aspects of the mammalian collection of zoos. We analyzed the presence/absence, population size, and frequency per species of each of the 123 mammalian families kept in the worldwide zoo collection. Our aim was to explain these data using the human-perceived attractiveness of mammalian families, their body weight, relative brain size and species richness of the family. In agreement with various previous studies, we found that the body size and the attractiveness of mammals significantly affect all studied components of the mammalian collection of zoos. There is a higher probability of the large and attractive families to be kept. Once kept, these animals are presented in larger numbers in more zoos. On the contrary, the relative mean brain size only affects the primary selection whether to keep the family or not. It does not affect the zoo population size or the number of zoos that keep the family.</p></div