Barbara Brown's titi monkey (''Callicebus barbarabrownae''), also popularly known as the blond titi monkey or northern Bahian blond titi,
is a species of
titi
The titis, or titi monkeys, are New World monkeys of the subfamily Callicebinae, which contains three extant genera: ''Cheracebus'', ''Callicebus'', and ''Plecturocebus.'' This subfamily also contains the extinct genera '' Miocallicebus, Homuncu ...
, a type of
New World monkey
New World monkeys are the five families of primates that are found in the tropical regions of Mexico, Central and South America: Callitrichidae, Cebidae, Aotidae, Pitheciidae, and Atelidae. The five families are ranked together as the Ceboi ...
. This
critically endangered
An IUCN Red List critically endangered (CR or sometimes CE) species is one that has been categorized by the International Union for Conservation of Nature as facing an extremely high risk of extinction in the wild. As of December 2023, of t ...
species is
endemic
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...
to the
Caatinga
Caatinga () is a type of semi-arid tropical vegetation, and an ecoregion characterized by this vegetation in interior northeastern Brazil. The name "Caatinga" comes from the Tupi word '' ka'atinga'', meaning "white forest" or "white vegetat ...
in northeastern
Brazil
Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...
, and it is estimated that less than 250 mature individuals remain.
It is named after the zoologist
Barbara Elaine Russell Brown.
Home range
The blonde titi monkey is listed as Critically Endangered due to small population size.
The blond titi monkey is endemic to the Atlantic forests of eastern Brazil, where it is found in the coastal highlands of
Bahia
Bahia () is one of the 26 Federative units of Brazil, states of Brazil, located in the Northeast Region, Brazil, Northeast Region of the country. It is the fourth-largest Brazilian state by population (after São Paulo (state), São Paulo, Mina ...
and
Sergipe
Sergipe (), officially State of Sergipe, is a States of Brazil, state of Brazil. Located in the Northeast Region, Brazil, Northeast Region along the Atlantic Ocean, Atlantic coast of the country, Sergipe is the smallest state in Brazil by geogra ...
States. Most of their population is found between the
Paraguaçu River (north) and Salvador (south), and west towards Mirorós. The estimated population is 260 individuals and is decreasing.
''C. barbarabrownae'' has been listed among the World's 25 Most Endangered Primates in 2012.
Habitat and ecology
The blond titi prefers habitats in caatinga a dry scrubland with preferences for dense arboreal
caatinga
Caatinga () is a type of semi-arid tropical vegetation, and an ecoregion characterized by this vegetation in interior northeastern Brazil. The name "Caatinga" comes from the Tupi word '' ka'atinga'', meaning "white forest" or "white vegetat ...
. They do tend to be largely arboreal forest dwellers, and the blond titi monkey probably rarely descends to the ground. They are small in size and are agile primates, they are good climbers through the branches on all four limbs, using their rear limbs to jump long distances, grasping onto branches with leading forehands. While resting, they hunch their body, hanging the tail over a branch.
Biology
The titi monkeys are most active at dawn and dusk foraging for fruits, leaves and insects, and rest at midday. The males will lead the group while foraging, communicating to the rest of the group with a wide array of vocalizations and visual signals. Titi monkeys are monogamous, with groups consisting of strongly-bonded parents and their offspring. Partners often reinforce the pair bond by perching side by side and entwining their tails.
Females give birth annually, during the wet season, to a litter of just one, after a gestation period of five to six months. Juveniles grow rapidly to reach adult size within ten months.
Major threat(s)
Since the titi monkey inhabits a region of Brazil they are subjected to a widespread of
deforestation
Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. Ab ...
and
habitat fragmentation
Habitat fragmentation describes the emergence of discontinuities (fragmentation) in an organism's preferred environment (habitat), causing population fragmentation and ecosystem decay. Causes of habitat fragmentation include geological proces ...
. Cattle ranching, agriculture and continuing urbanization are the main threats. The area is in rapid development facilitated by an extensive network of highways. Other threats include potential dangers from roads and power-lines and predation by domestic pets. This species occurs in small fragmented populations that are exposed to synergistic genetic and demographic risks. Hunting pressure needs to be ascertained, but it is probably moderate due to the small body size. During surveys, a few individuals were found being kept as pets. The species is not found in any officially protected area.
Conservation
Despite being home to numerous species found nowhere else in the world, only one percent of the forests of Bahia, home to the blond titi monkey, are under any form of protection and as a number of destructive activities continue to degrade the area, action is required to protect the blond titi monkey's habitat.
[(March, 2010) http://www.panda.org/about_our_earth/ecoregions/atlantic_forests.cfm ] Several organizations, including the Brazilian Institute for the Environment, are working to promote the study and protection of Brazil's threatened primates.
[(March, 2010)] Conservation International is also helping to establish a Central Biodiversity Corridor that aims to connect fragmented forests, while
WWF is developing an overall conservation strategy for Brazil's Atlantic forests. Further research is needed into the ecology and status of this enigmatic species if it is to be pulled back from the brink of extinction.
References
{{Taxonbar, from=Q1350660
Barbara Brown's titi
Primates of Brazil
Endemic mammals of Brazil
Barbara Brown's titi
Taxa named by Philip Hershkovitz