Mico nigriceps

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	MAMMALIA	PRIMATES	CALLITRICHIDAE

Scientific Name:

Mico nigriceps

Species Authority

(Ferrari & Lopes, 1992)

Common Name/s:

English	–	Black-headed Marmoset
Spanish	–	Sagüi

Synonym/s:

Callithrix nigriceps

Assessment Information [top]

Red List Category & Criteria:

Data Deficient ver 3.1

Year Assessed:

2008

Assessor/s

Rylands, A.B, Ferrari, S.F. & de Oliveira, M.M.

Evaluator/s:

Mittermeier, R.A. & Rylands, A.B. (Primate Red List Authority)

Justification:
Listed as Data Deficient as there is no information on the threats to this species, nor on the precise limits of the distribution range.

History:

2003	–	Data Deficient (IUCN 2003)
2000	–	Vulnerable (Hilton-Taylor 2000)
1996	–	Vulnerable (Baillie and Groombridge 1996)
1994	–	Vulnerable (Groombridge 1994)

Geographic Range [top]

Range Description:	This marmoset is believed to occur between the Rio dos Marmelos in the north and east, the Rio Madeira in the west and the Rio Jiparaná in the south, in the state of Rondônia, Brazil. Ferrari (1993) reported on the capture of two adult male M. nigriceps at the Tenharin Indian settlement, on the west bank of the Rio dos Marmelos (07º57’S, 62º03’W). (The location of Tenharin on the map, Figure 1, in Ferrari [1993] was incorrect. The correct location was shown in Ferrari [1994].) Ferrari and Lopes (1992) and Ferrari (1993) argued that it is unlikely to extend further west than the Rios Madeira and Jiparaná, nor east to the Rios Aripuanã and Roosevelt, and the south-eastern limits are defined by an area of savanna/cerrado vegetation at the headwaters of the Rio dos Marmelos and along the middle Rio Jiparaná.
Countries:	Native: Brazil (Amazonas)
Range Map:	(click map to view full version)

Population [top]

Population:	Nothing is known of population size and densities in the wild.
Population Trend:	Unknown

Habitat and Ecology [top]

Habitat and Ecology:	Inhabits humid tropical rain forest, with a preference for secondary growth and edge habitat. Marmosets and tamarins are distinguished from the other monkeys of the New World by their small size, modified claws rather than nails on all digits except the big toe, the presence of two as opposed to three molar teeth in either side of each jaw, and by the occurrence of twin births. They eat fruits, flowers, nectar, plant exudates (gums, saps, latex) and animal prey (including frogs, snails, lizards, spiders and insects). Marmosets have morphological and behavioural adaptations for gouging trees trunks, branches and vines of certain species to stimulate the flow of gum, which they eat, and in some species form a notable component of the diet (Coimgra-Filho and Mittermeier 1976; Rylands 1984). They live in extended family groups of between four and 15 individuals. Generally, only one female per group breeds during a particular breeding season. The groups defend home ranges 10-40 ha, the size depending on availability and distribution of foods and second-growth patches. Information on the gut morphology of M. nigriceps and its relation to gum feeding is provided in Ferrari et al. (1993). Size: H&B 21.1 cm. TL 33.2 cm (n = 6) (Ferrari 2008) Male weight 380 g (n=3) (Ferrari 1993).
Systems:	Terrestrial

Habitat and Ecology:

Inhabits humid tropical rain forest, with a preference for secondary growth and edge habitat.

Marmosets and tamarins are distinguished from the other monkeys of the New World by their small size, modified claws rather than nails on all digits except the big toe, the presence of two as opposed to three molar teeth in either side of each jaw, and by the occurrence of twin births. They eat fruits, flowers, nectar, plant exudates (gums, saps, latex) and animal prey (including frogs, snails, lizards, spiders and insects). Marmosets have morphological and behavioural adaptations for gouging trees trunks, branches and vines of certain species to stimulate the flow of gum, which they eat, and in some species form a notable component of the diet (Coimgra-Filho and Mittermeier 1976; Rylands 1984). They live in extended family groups of between four and 15 individuals. Generally, only one female per group breeds during a particular breeding season. The groups defend home ranges 10-40 ha, the size depending on availability and distribution of foods and second-growth patches.

Information on the gut morphology of M. nigriceps and its relation to gum feeding is provided in Ferrari et al. (1993).

Size:
H&B 21.1 cm. TL 33.2 cm (n = 6) (Ferrari 2008)
Male weight 380 g (n=3) (Ferrari 1993).

Systems:

Terrestrial

Threats [top]

Major Threat(s):	Major threats to this species are generally not understood. The area can be reached by paved road from Rondônia and is traversed by the Transamazon highway where cattle-ranching and logging are underway (Ferrari and Lopes 1992). It is not hunted, but there is some use as pets.

Major Threat(s):

Major threats to this species are generally not understood. The area can be reached by paved road from Rondônia and is traversed by the Transamazon highway where cattle-ranching and logging are underway (Ferrari and Lopes 1992). It is not hunted, but there is some use as pets.

Conservation Actions [top]

Conservation Actions:	This species is not recorded from any protected areas. Further research is needed to better determine the geographic range, demography, and ecology of this species. Also surveys are needed to evaluate threats with increasing development in the region.

Conservation Actions:

This species is not recorded from any protected areas. Further research is needed to better determine the geographic range, demography, and ecology of this species. Also surveys are needed to evaluate threats with increasing development in the region.

Citation:	Rylands, A.B, Ferrari, S.F. & de Oliveira, M.M. 2008. Mico nigriceps. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 23 November 2008.
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