|
White-nosed Saki
The white-nosed saki (''Chiropotes albinasus'') is a species of bearded saki, a type of New World monkey, endemic to the south-central Amazon rainforest in Brazil. Both its scientific and common name were caused by the authors working from dead specimens, where the skin on and around the nose fades to a whitish color.. In living individuals, the nose is actually bright pink (though with fine barely visible white hairs). Pelage on the body tends to be black in males and brown to brownish-grey in females. No other species of the genus ''Chiropotes'' have a brightly coloured nose. This species is considered to be "medium-sized". They are a primary consumer that eats seeds, fruit, flowers, bark, insects and leaves.Ayres 1989. They are also a social species that arrange themselves into large groups for many reasons such as sleeping, food gathering and travel arrangements. These social groups are important in situations where they are under attack by a predator as they decide on their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isidore Geoffroy Saint-Hilaire
Isidore Geoffroy Saint-Hilaire (16 December 1805 – 10 November 1861) was a French zoologist and an authority on deviation from normal structure. In 1854 he coined the term ''éthologie'' (ethology). Biography He was born in Paris, the son of Étienne Geoffroy Saint-Hilaire. In his earlier years he showed an aptitude for mathematics, but eventually he devoted himself to the study of natural history and of medicine, and in 1824 he was appointed assistant naturalist to his father. In 1829 he delivered for his father the second part of a course of lectures on ornithology, and during the following three years he taught zoology at the ''Athénée'', and teratology at the ''École pratique''. He was elected a member of the French Academy of Sciences in 1833, was in 1837 appointed to act as deputy for his father at the faculty of sciences in Paris. During the following year he was sent to Bordeaux to organize a similar faculty there. He became successively; inspector of the aca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uta Hick's Bearded Saki
Uta Hick's bearded saki (''Chiropotes utahicki'') is an endangered species of bearded saki, a type of New World monkey. It is endemic to Brazil, where restricted to the Amazon between the Xingu and Tocantins Rivers. It was formerly treated as a subspecies of the more easterly '' C. satanas'', but its back is pale brownish.Silva Jr., J. S. and Figueiredo, W. M. B. (2002). ''Revisão sistemática dos cuxiús, gênero Chiropotes Lesson, 1840 (Primates Pithecidae).'' Livro de Resumos do XO. Congresso da Sociedade Brasileira de Primatologia, Amazônia – A Última Fronteira: 21. Belém, Brazil.Bonvicino, C. R., Boubli, J. P., Otazú, I. B., Almeida, F. C., Nascimento, F. F., Coura, J. R. and Seuánez, H. N. (2003). ''Morphologic, karyotypic, and molecular evidence of a new form of Chiropotes (primates, pitheciinae).'' American Journal of Primatology 61(3): 123-133. Etymology It was named in honor of Uta Hick, a German primatologist who cared for bearded sakis at the Cologne Zoo. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crypsis
In ecology, crypsis is the ability of an animal or a plant to avoid observation or detection by other animals. It may be a predation strategy or an antipredator adaptation. Methods include camouflage, nocturnality, subterranean lifestyle and mimicry. Crypsis can involve visual, olfactory (with pheromones) or auditory concealment. When it is visual, the term cryptic coloration, effectively a synonym for animal camouflage, is sometimes used, but many different methods of camouflage are employed by animals or plants. Overview There is a strong evolutionary pressure for animals to blend into their environment or conceal their shape, for prey animals to avoid predators and for predators to be able to avoid detection by prey. Exceptions include large herbivores without natural enemies, brilliantly colored birds that rely on flight to escape predators, and venomous or otherwise powerfully armed animals with warning coloration. Cryptic animals include the tawny frogmouth (feather pat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Hawk-eagle
The black hawk-eagle (), also known as the tyrant hawk-eagle, is a species of eagle found from central Mexico through Central America into the south of Brazil to Colombia, eastern Peru, and as far as northern Argentina. There are two known subspecies, , which is found in Southeastern Brazil and Northeastern Argentina, and the slightly smaller , which can be found elsewhere throughout the species' range. Its preferred habitats include humid and moist forests close to rivers, and several types of woodland. It is uncommon to fairly common throughout most of its range. Its closest relative is the ornate hawk-eagle, which is similar in size, appearance and behavior but lives at lower elevations. Description The black hawk-eagle is 58–70 cm (23–28 in) long and weighs about 900–1,300 grams (2-2.9 lbs). It has black plumage with varying patterns on its wings and body, and white speckling in places. It has barred wings, slightly elliptical in shape, and a long, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fission–fusion Society
In ethology, a fission–fusion society is one in which the size and composition of the social group change as time passes and animals move throughout the environment; animals merge into a group (fusion)—e.g. sleeping in one place—or split (fission)—e.g. foraging in small groups during the day. For species that live in fission–fusion societies, group composition is a dynamic property. The change in composition, subgroup size, and dispersion of different groups are 3 main elements of a fission-fusion society. This social organization is found in several primates, elephants, cetaceans, ungulates, social carnivores, some birds and some fish. Species Fission-fusion societies occur among many different species of primates (e.g. chimpanzees, orangutans, and humans), elephants (e.g. forest elephants, African elephants), and bats (e.g. northern long-eared bats). The change in composition, subgroup size, and dispersion of different groups are 3 main elements of a fission-fusion s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diurnality
Diurnality is a form of plant and ethology, animal behavior characterized by activity during daytime, with a period of sleeping or other inactivity at night. The common adjective used for daytime activity is "diurnal". The timing of activity by an animal depends on a variety of environmental factors such as the temperature, the ability to gather food by sight, the risk of predation, and the time of year. Diurnality is a cycle of activity within a 24-hour period; cyclic activities called circadian rhythms are endogenous cycles not dependent on external cues or environmental factors except for a zeitgeber. Animals active during twilight are crepuscular, those active during the night are nocturnal and animals active at sporadic times during both night and day are cathemerality, cathemeral. Plants that open their flowers during the daytime are described as diurnal, while those that bloom during nighttime are nocturnal. The timing of flower opening is often related to the time at which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diet Of The White-nosed Saki (Pie Chart)
Diet may refer to: Food * Diet (nutrition), the sum of the food consumed by an organism or group * Dieting, the deliberate selection of food to control body weight or nutrient intake ** Diet food, foods that aid in creating a diet for weight loss or gain * Healthy diet, the process of helping to maintain or improve overall health Politics *Diet (assembly), a formal deliberative assembly Current * National Diet, Japan's bicameral legislature, in its current form since 1947, composed of the House of Representatives and the House of Councillors * Landtag, a diet of states and provinces in Germany, Austria, South Tyrol in Italy, and the national parliament of Liechtenstein * Bundestag (''Deutscher Bundestag''), the lower house of Germany's Parliament, established in West Germany in 1949, and all of Germany in 1990 Historical * Diet of Finland, the legislative assembly of the Grand Duchy of Finland from 1809 to 1906 * Diet of Hungary, the legislative assembly of the Kingdom of Hungar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
José Márcio Ayres
José Márcio Corrêa Ayres (February 21, 1954 – March 7, 2003) was a Brazilian primatologist and conservationist who founded the Mamirauá Sustainable Development Reserve in 1996, followed by the Amanã Sustainable Development Reserve in 1998. The two reserves are located in the central region of the Brazilian state of Amazonas, and are joined to adjacent Jaú National Park to form a corridor spanning over of protected rainforest. Ayres devoted his life to the preservation of the unique biota and ecosystems of the Amazon, as well as to developing a method by which rural dwellers would benefit from the conservation of natural resources. He realized that the uakari monkeys he had been studying for his doctoral thesis would stand no chance of survival unless new community-based models of natural resource management were applied to the much exploited Amazon river basin. Ayres' doctorate in primatology at Sidney Sussex College, Cambridge in 1986 was for his thesis ''Uakaris a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suspensory Behaviour
Suspensory behaviour is a form of arboreal locomotion or a feeding behavior that involves hanging or suspension of the body below or among tree branches. This behavior enables faster travel while reducing path lengths to cover more ground when travelling, searching for food and avoiding predators. Different types of suspensory behaviour include brachiation, climbing, and bridging. These mechanisms allow larger species to distribute their weight among smaller branches rather than balancing above these weak supports. Primates and sloths are most commonly seen using these behaviours, however, other animals such as bats may be seen hanging below surfaces to obtain food or when resting. Biomechanics In primates and sloths Animals who exhibit suspensory behaviour have similar mechanisms to perform this action and often involve many different parts of their body like the trunk, shoulders and many other features of their upper body. Typically, these animals have an overall dorso-ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehensile Tail
A prehensile tail is the tail of an animal that has adapted to grasp or hold objects. Fully prehensile tails can be used to hold and manipulate objects, and in particular to aid arboreal creatures in finding and eating food in the trees. If the tail cannot be used for this it is considered only partially prehensile - such tails are often used to anchor an animal's body to dangle from a branch, or as an aid for climbing. The term ''prehensile'' means "able to grasp" (from the Latin ''prehendere'', to take hold of, to grasp). Evolution One point of interest is the distribution of animals with prehensile tails. The prehensile tail is predominantly a New World adaptation, especially among mammals. Many more animals in South America have prehensile tails than in Africa and Southeast Asia. It has been argued that animals with prehensile tails are more common in South America because the forest there is denser than in Africa or Southeast Asia. In contrast, less dense forests such as in S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savanna
A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses. According to '' Britannica'', there exists four savanna forms; ''savanna woodland'' where trees and shrubs form a light canopy, ''tree savanna'' with scattered trees and shrubs, ''shrub savanna'' with distributed shrubs, and ''grass savanna'' where trees and shrubs are mostly nonexistent.Smith, Jeremy M.B.. "savanna". Encyclopedia Britannica, 5 Sep. 2016, https://www.britannica.com/science/savanna/Environment. Accessed 17 September 2022. Savannas maintain an open canopy despite a high tree density. It is often believed that savannas feature widely spaced, scattered trees. However, in many savannas, tree densities are higher and trees are more regularly spaced than in for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foraging
Foraging is searching for wild food resources. It affects an animal's Fitness (biology), fitness because it plays an important role in an animal's ability to survive and reproduce. Optimal foraging theory, Foraging theory is a branch of behavioral ecology that studies the foraging behavior of animals in response to the environment where the animal lives. Behavioral ecologists use economic models and categories to understand foraging; many of these models are a type of optimal model. Thus foraging theory is discussed in terms of optimizing a payoff from a foraging decision. The payoff for many of these models is the amount of energy an animal receives per unit time, more specifically, the highest ratio of energetic gain to cost while foraging. Foraging theory predicts that the decisions that maximize energy per unit time and thus deliver the highest payoff will be selected for and persist. Key words used to describe foraging behavior include ''resources'', the elements necessary fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Fission–fusion Society")
.png "Click for more on -> Prehensile Tail")
