Between-year differences in the feeding ecology of highland marmosets (Callithrix aurita and Callithrix flaviceps) in south-eastern Brazil

Correa, H. K. M.; Coutinho, Paulo E. G.; Ferrari, Stephen F.

doi:10.1017/s0952836900000170

Cited by 30 publications

(32 citation statements)

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“…Thus, instead of a more typical foraging-dominated activity budget [15,18,28,29], the activity pattern of the study groups had one of the highest percentages of resting ever recorded, even when compared to other callitrichids living in the much more climatically inhospitable Cerrado [25,52] or at high altitudes [23]. This probably resulted from the fact that the gum is easily obtained but very difficult to digest.…”

Section: Discussionmentioning

confidence: 86%

“…In common marmosets the activity budget appears to be dominated by foraging and feeding, with these activities summing up to 55% of the diurnal time budget, although it varies with habitat type, distribution, abundance, seasonality of the feeding resources, and time of the day [21,23,27]. Common marmosets typically have activity patterns with two feeding peaks, one in the early morning and another one at the end of the afternoon, and a peak of resting in the middle of the day [12,15,18,28,29].…”

Section: Introductionmentioning

confidence: 99%

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Home Range, Diet, and Activity Patterns of Common Marmosets (Callithrix jacchus) in Very Small and Isolated Fragments of the Atlantic Forest of Northeastern Brazil

Pinheiro

Pontes

2015

International Journal of Ecology

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We evaluate the impact of very small and isolated forest fragments on the common marmosets home range, diet, and activity patterns, in the northeastern Atlantic Forest of Brazil. Three groups were studied in three forest fragments, from January to October 2010, totaling 360 hours of observations and 1,080 field-hours. Systematic observations were recorded using Instantaneous Scan Sampling, and a checklist of the items exploited was built through ad libitum observations. We recorded location of the groups and calculated home range. We recorded 11,639 scans and 236 ad libitum feeding records. 83.4% ( = 10) of food items were plant species, the only animal protein was from insects ( = 2; 16.6%), and the diet was based almost exclusively on gums. Mean home range was 5.5 ha, mean daily path length was 1,167 meters, and no differences were detected between seasons. Resting dominated their activity budget and varied between seasons. Common marmosets survived in this environment through a remarkable increase in their exploitation of tree gums (up to 98% of their feeding bouts) to compensate for the lack of food, in home ranges slightly larger than in the literature. Thus, they travelled and foraged less than expected and rested more since food was easily obtained.

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Section: Discussionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Home Range, Diet, and Activity Patterns of Common Marmosets (Callithrix jacchus) in Very Small and Isolated Fragments of the Atlantic Forest of Northeastern Brazil

Pinheiro

Pontes

2015

International Journal of Ecology

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“…In the specific case of C. flaviceps, such variability has increased proportionally to the number of field studies, and may reflect distinct ecological factors within the distribution of the species [Ferrari et al, 1996;Corrêa et al, 2000].…”

Section: Discussionmentioning

confidence: 99%

Four Breeding Females in a Free-Ranging Group of Buffy-Headed Marmosets (Callithrix flaviceps)

Hilário

Ferrari²

2010

IJFP

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The reproductive patterns recorded in a free-ranging group of Callithrix flaviceps were unique in a number of ways, including 4 females breeding simultaneously, a non-breeding dominant female, and a well-defined birth season. In addition, all observed copulations involved extragroup individuals. The more socially dominant breeding female had more births and more surviving offspring, on average, than subordinate females, and was implicated in at least 1 infanticide. All 4 females carried their own infants for relatively long periods following the births, apparently as a defence mechanism related to the risk of infanticide. It remains unclear whether the unusual number of breeding females in the group represents a species-specific pattern, or the result of specific local circumstances.

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“…peregrina provê 90% de exsudados consumidos por grupos de Callithrix flaviceps acompanhados na Reserva Biológica de Caratinga, MG, sendo a fonte preferida de goma (CORRÊA et al, 2000), além de ser indicada para recuperação de áreas degradadas por mineração (ARAÚJO et al, 2006). O objetivo deste trabalho foi avaliar o vigor e viabilidade de sementes de A. peregina submetidas ao envelhecimento acelerado e ao osmocondicionamento.…”

Section: Introductionunclassified

Avaliação da viabilidade e vigor de sementes de Anadenanthera peregrina (L.) Speg. submetidas ao envelhecimento acelerado e ao osmocondicionamento

Pinho

Borges

Pontes³

2010

Rev. Árvore

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4RESUMO -O objetivo deste trabalho foi avaliar o vigor e viabilidade de sementes de Anadenanthera peregina submetidas ao envelhecimento acelerado e ao osmocondicionamento. As sementes foram acondicionadas em caixas tipo "gerbox" com uma tela de alumínio separando-as do fundo do gerbox, onde se adicionou água destilada. As caixas foram mantidas em câmara de envelhecimento nas temperaturas de 40, 50 e 60 ºC, durante 24, 48, 72 e 96 h. Para o controle foram utilizadas sementes não submetidas ao envelhecimento. Após cada tempo, as sementes foram submetidas aos seguintes testes: teste de germinação, índice de velocidade de germinação, condutividade elétrica, teste de tetrazólio, osmocondicionamento e avaliação das plântulas. A 40 ºC, a porcentagem de germinação, o Índice de Velocidade de Germinação (IVG) e a porcentagem de sementes viáveis pelo teste de tetrazólio decresceram significativamente. Houve incremento significativo da curva de condutividade elétrica à medida que aumentou a permanência das sementes dentro da câmara de envelhecimento. A partir de 96 h de permanência na câmara de envelhecimento, as sementes perderam toda a viabilidade, assim como aquelas submetidas ao envelhecimento a 50 e 60 ºC. Na avaliação das plântulas, todos os parâmetros analisados decresceram à medida que as sementes permaneceram na câmara de envelhecimento por mais tempo, com exceção da porcentagem de plântulas anormais e do peso fresco da raiz, que tiveram incremento nos seus valores.Palavras-chave: Envelhecimento precoce, Anadenanthera e Viabilidade. VIABILITY AND VIGOUR EVALUATION OF THE Anadenanthera peregrina (L.) Speg. SEEDS SUBMITTED TO THE ACCELERATED AGING AND OSMOPRIMING ABSTRACT -The aim of this experiment was to evaluate the effect of the accelerated aging in the vigor

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Between-year differences in the feeding ecology of highland marmosets (Callithrix aurita and Callithrix flaviceps) in south-eastern Brazil

Cited by 30 publications

References 0 publications

Home Range, Diet, and Activity Patterns of Common Marmosets (Callithrix jacchus) in Very Small and Isolated Fragments of the Atlantic Forest of Northeastern Brazil

Home Range, Diet, and Activity Patterns of Common Marmosets (Callithrix jacchus) in Very Small and Isolated Fragments of the Atlantic Forest of Northeastern Brazil

Four Breeding Females in a Free-Ranging Group of Buffy-Headed Marmosets (Callithrix flaviceps)

Avaliação da viabilidade e vigor de sementes de Anadenanthera peregrina (L.) Speg. submetidas ao envelhecimento acelerado e ao osmocondicionamento

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