Diets of Howler Monkeys

Dias, Pedro Américo D.; Rangel‐Negrín, Ariadna

doi:10.1007/978-1-4939-1960-4_2

Cited by 68 publications

(60 citation statements)

References 88 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The diet of howler monkeys primarily consists of leaves, fruits and flowers (Fernández, 2014, Dias and Rangel-Negrín, 2015), but they can ingest insects accidentally when eating fruits and leaves or when removing ectoparasites (grooming). More rarely, they might eat ants from old trees (Raño, personal communication).…”

Section: Discussionmentioning

confidence: 99%

Molecular characterization of trypanosomatid infections in wild howler monkeys ( Alouatta caraya ) in northeastern Argentina

Martínez

Kowalewski

Salomón

et al. 2016

International Journal for Parasitology: Parasites and Wildlife

View full text Add to dashboard Cite

The transmission of Trypanosoma cruzi by vectors is confined to the Americas, and the infection circulates in at least two broadly defined transmission cycles occurring in domestic and sylvatic habitats. This study sought to detect and characterize infection by T. cruzi and other trypanosomes using PCR strategies in blood samples from free-ranging howler monkeys, Alouatta caraya, in the northeastern Argentina. Blood samples were collected at four sites with variable levels of habitat modification by human activity. PCR was conducted using primers for kinetoplast DNA, satellite DNA and ribosomal DNA of the trypanosomatid parasites. Ribosomal and satellite DNA fragments were sequenced to identify the trypanosomatid species and to characterize the discrete typing units (DTUs) of T. cruzi. Overall, 46% (50/109) of the howlers were positive according to the kDNA-PCR assay, but only 7 of the howlers were positive according to the SatDNA-PCR protocol. We sequenced the amplicons of the satellite DNA obtained from five specimens, and the sequences were 99% and 100% similar to T. cruzi. A sequence typical of DTU T. cruzi I was found in one howler monkey from the “remote” site, while sequences compatible with DTUs II, V, and VI were found in howlers from the “remote”, “rural” and “village” sites. We detected 96% positive samples for RibDNA-PCR, 9 of which were sequenced and displayed 99% identity with Trypanosoma minasense, while none showed identity with T. cruzi. The results demonstrated the presence of T. cruzi and a species closely related to T. minasense in blood samples from free-ranging A. caraya, belonging to different T. cruzi DTUs circulating in these howler monkey populations. The results obtained in this study could help evaluate the role of A. caraya as a reservoir of T. cruzi in regions where Chagas disease is hyper-endemic and where the human-wildlife interface is increasing.

show abstract

Section: Discussionmentioning

confidence: 99%

Molecular characterization of trypanosomatid infections in wild howler monkeys ( Alouatta caraya ) in northeastern Argentina

Martínez

Kowalewski

Salomón

et al. 2016

International Journal for Parasitology: Parasites and Wildlife

View full text Add to dashboard Cite

show abstract

“…Howlers’ ability to live in the aforementioned wide range of forested habitats has been related to their flexible folivorous‐frugivorous diet, of which the contribution of leaves and fruits varies between seasons and sites (Bicca‐Marques, ; Bonilla‐Sánchez, Serio‐Silva, Pozo‐Montuy, & Chapman, ; Chaves & Bicca‐Marques, ; Dias & Rangel‐Negrín, ; Prates & Bicca‐Marques, ). Howlers are the most folivorous Neotropical primates (Neville et al, ).…”

Section: Responses Of Howler Monkeys To Habitat Spatial Restrictionmentioning

confidence: 99%

Howler monkey tolerance to habitat shrinking: Lifetime warranty or death sentence?

Bicca‐Marques

Chaves

Hass

2020

American J Primatol

View full text Add to dashboard Cite

Habitat loss and fragmentation are major threats to the conservation of nonhuman primates. Given that species differ in their responses to fragmented landscapes, identifying the factors that enable them to cope with altered environments or that cause their extirpation is critical to design conservation management strategies. Howler monkeys (Alouatta spp.) are good models for studying the strategies of tolerant arboreal taxa and how they cope with spatial restriction, because they live in habitats ranging from vast pristine forests to small

show abstract

“…Mantled howler monkeys are classified as nonseasonal breeders (Di Bitetti & Janson, 2000) and births may occur in any month of the year (Estrada, 1982; Jones, 1980). Their diet varies from frugivorous to folivorous depending on seasonality in food item availability (Dias & Rangel‐Negrín, 2015). During gestation and lactation mantled howler monkey females increase the consumption of fats, proteins, and energy (Serio‐Silva, Hernández‐Salazar, & Rico‐Gray, 1999), and have higher glucocorticoid hormone concentrations (independently of psychosocial activation of the stress axis: Dias, Coyohua‐Fuentes, Canales‐Espinosa, Chavira‐Ramírez, & Rangel‐Negrín, 2017) than cycling females.…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Sex differences in leadership during group movement in mantled howler monkeys (Alouatta palliata)

Ceccarelli

Rangel‐Negrín

Coyohua-Fuentes

et al. 2020

American J Primatol

Self Cite

View full text Add to dashboard Cite

Benefits of group life depend in large part on whether animals remain cohesive, which often requires collective decisions about where and when to move. During a group movement, the leader may be considered as the individual occupying the vanguard position of the group progression, when its movement evokes following by other group members. In nondespotic societies, individuals with greater incentives to move frequently are leaders. During 15 months of observations (1,712 contact hours), we investigated two mantled howler monkey (Alouatta palliata) groups at La Flor de Catemaco (Los Tuxtlas, Mexico) to examine whether sex and female reproductive state influenced leadership likelihood in two contexts: movements toward feeding trees; movements associated with loud calls, a group‐defense behavior used by males of this genus. Females led and occupied forward positions during group movements toward feeding trees more often than adult males. Adult females led these movements more frequently when they were gestating than when they were lactating or cycling. There were no differences between sexes in the leadership of group movements associated with loud calls. Leadership by gestating females is perhaps the result of their higher nutritional/energetic needs when compared with cycling females, and of their greater mobility when compared with lactating females carrying dependent offspring. Female leadership during movements toward feeding trees may be a mechanism to optimize access to food resources in mantled howler monkeys.

show abstract

Diets of Howler Monkeys

Cited by 68 publications

References 88 publications

Molecular characterization of trypanosomatid infections in wild howler monkeys ( Alouatta caraya ) in northeastern Argentina

Molecular characterization of trypanosomatid infections in wild howler monkeys ( Alouatta caraya ) in northeastern Argentina

Howler monkey tolerance to habitat shrinking: Lifetime warranty or death sentence?

Sex differences in leadership during group movement in mantled howler monkeys (Alouatta palliata)

Contact Info

Product

Resources

About