scholarly journals A ten-year demographic history of a population of howler monkeys (Alouatta palliata) living in a fragmented landscape in Mexico

2015 ◽  
Author(s):  
Jurgi Cristóbal Azkarate ◽  
Jacob Charles Dunn ◽  
Cristina Domingo Balcells ◽  
Joaquim Veà Baró
Keyword(s):  
Demographic History ◽  
Demographic Data ◽  
Resource Scarcity ◽  
Alouatta Palliata ◽  
Howler Monkey ◽  
Fragmented Landscape ◽  
Howler Monkeys ◽  
Mantled Howler ◽  
Mantled Howler Monkey

Long-term field studies of primates are critical for our understanding of life history and the processes driving changes in demography. Here, we present the first long-term demographic data for the northernmost population of the mantled howler monkey (Alouatta palliata). We followed 10 groups of howler monkeys living in a highly fragmented landscape between 2000 and 2011. Forest fragmentation did not seem to play a major role in the dynamics of our population, as the population size remained relatively stable over the 10-year study period, and birth rates and inter-birth intervals were comparable to those of howler monkeys at other sites. Moreover, dispersal events were commonplace, particularly secondary dispersal (individuals emigrating from groups that they had previously immigrated into), which supports the suggestion that this may be an important component of the reproductive strategy of the mantled howler monkey. Finally, we found a marked effect of seasonality on the population dynamics of our study population. In particular, the period of lowest temperatures and resource scarcity between November and March was associated with higher mortality and reproductive inhibition, while the period of resource abundance between April and May was associated with the majority of conceptions and weaning of offspring. This, in turn, could be influencing dispersal patterns in our study area, as male howler monkeys seem to time some of their immigrations into new groups to coincide with the start of the period of higher fertility, while females preferentially joined new groups several months before the onset of this period.

scholarly journals A ten-year demographic history of a population of howler monkeys (Alouatta palliata) living in a fragmented landscape in Mexico

2015 ◽  
Author(s):  
Jurgi Cristóbal Azkarate ◽  
Jacob Charles Dunn ◽  
Cristina Domingo Balcells ◽  
Joaquim Veà Baró
Keyword(s):  
Demographic History ◽  
Demographic Data ◽  
Resource Scarcity ◽  
Alouatta Palliata ◽  
Howler Monkey ◽  
Fragmented Landscape ◽  
Howler Monkeys ◽  
Mantled Howler ◽  
Mantled Howler Monkey

Long-term field studies of primates are critical for our understanding of life history and the processes driving changes in demography. Here, we present the first long-term demographic data for the northernmost population of the mantled howler monkey (Alouatta palliata). We followed 10 groups of howler monkeys living in a highly fragmented landscape between 2000 and 2011. Forest fragmentation did not seem to play a major role in the dynamics of our population, as the population size remained relatively stable over the 10-year study period, and birth rates and inter-birth intervals were comparable to those of howler monkeys at other sites. Moreover, dispersal events were commonplace, particularly secondary dispersal (individuals emigrating from groups that they had previously immigrated into), which supports the suggestion that this may be an important component of the reproductive strategy of the mantled howler monkey. Finally, we found a marked effect of seasonality on the population dynamics of our study population. In particular, the period of lowest temperatures and resource scarcity between November and March was associated with higher mortality and reproductive inhibition, while the period of resource abundance between April and May was associated with the majority of conceptions and weaning of offspring. This, in turn, could be influencing dispersal patterns in our study area, as male howler monkeys seem to time some of their immigrations into new groups to coincide with the start of the period of higher fertility, while females preferentially joined new groups several months before the onset of this period.

scholarly journals A demographic history of a population of howler monkeys (Alouatta palliata) living in a fragmented landscape in Mexico

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3547 ◽  
Author(s):  
Jurgi Cristóbal Azkarate ◽  
Jacob C. Dunn ◽  
Cristina Domingo Balcells ◽  
Joaquim Veà Baró
Keyword(s):  
Demographic History ◽  
Resource Scarcity ◽  
Alouatta Palliata ◽  
Howler Monkey ◽  
Fragmented Landscape ◽  
Howler Monkeys ◽  
Mantled Howler ◽  
Study Population ◽  
Mantled Howler Monkeys

Long-term field studies are critical for our understanding of animal life history and the processes driving changes in demography. Here, we present long-term demographic data for the northernmost population of mantled howler monkeys (Alouatta palliata) residing in a highly anthropogenically fragmented landscape in Los Tuxtlas, Mexico. We carried out 454 monthly group visits to 10 groups of mantled howler monkeys between 2000 and 2011. The population remained relatively stable over the 11-year study period, with an overall increase in the total number of individuals. Birth rates and inter-birth intervals were comparable to those of howler monkeys at non-fragmented sites, suggesting that living in a fragmented landscape did not affect the reproductive output of our study population. Moreover, despite the landscape, dispersal events were commonplace, including many secondary dispersals (individuals emigrating from groups that they had previously immigrated into). Finally, we found a marked effect of seasonality on the dynamics of our study population. In particular, the period of lowest temperatures and resource scarcity between November and March was associated with higher mortality and reproductive inhibition, while the period of resource abundance between April and May was associated with the majority of conceptions and weaning of offspring. This, in turn, could be influencing dispersal patterns in our study area, as male howler monkeys seem to time some of their immigrations into new groups to coincide with the start of the period of higher fertility, while females preferentially joined new groups several months before the onset of this period. These data have important implications for the conservation and management of howler monkeys in fragmented landscapes, as well as for our understanding of the effect of seasonality over howler monkey dispersal, reproduction and survival.

Phylogeography of the Mantled Howler Monkey (Alouatta palliata; Atelidae, Primates) across Its Geographical Range by Means of Mitochondrial Genetic Analyses and New Insights about the Phylogeny of Alouatta

2017 ◽  
Vol 88 (5) ◽  
pp. 421-454 ◽  
Author(s):  
Manuel Ruiz-García ◽  
Ángela Cerón ◽  
Sebastián Sánchez-Castillo ◽  
Pilar Rueda-Zozaya ◽  
Myreya Pinedo-Castro ◽  
...  
Keyword(s):  
Alouatta Palliata ◽  
Geographical Range ◽  
Howler Monkey ◽  
Genetic Analyses ◽  
Mantled Howler ◽  
Mantled Howler Monkey

scholarly journals Abnormal pelage color in mantled howler monkey (Alouatta palliata mexicana) in Veracruz, México

2021 ◽  
Vol 2 (1) ◽  
pp. 26-28
Keyword(s):  
Alouatta Palliata ◽  
Howler Monkey ◽  
Mantled Howler ◽  
Pelage Color ◽  
Ad Libitum ◽  
Mantled Howler Monkey ◽  
Alouatta Palliata Mexicana

El leucismo es una despigmentación total o parcial del pelaje, mientras que el albinismo es la pérdida total de pigmentos en el cuerpo entero; las condiciones anormales de la carencia del pigmento se deben a la expresión de genes recesivos.  Se realizó una expedición ad libitum en el Ejido Álvaro Obregón, al suroeste de Nuevo Cantón, municipio de Uxpanapa, Veracruz en diciembre de 2019.  Presentamos el primer registro de un individuo de mono aullador de manto (Alouatta palliata mexicana) con coloración no convencional (probablemente leucismo o albinismo), observado en una tropa silvestre en la región del Valle de Uxpanapa, Veracruz, México.  La coloración de la mucosa oral y palpebral no muestran pigmentación y pueden ser resultado de la expresión de genes recesivos en el individuo, por lo que realizar estudios más profundos sobre la expresión de genes recesivos ampliaría la comprensión del fenómeno.

Howling on the edge: Mantled howler monkey (Alouatta palliata) howling behaviour and anthropogenic edge effects in a fragmented tropical rainforest in Costa Rica

Ethology ◽  
2019 ◽  
Vol 125 (9) ◽  
pp. 593-602 ◽  
Author(s):  
Laura M. Bolt ◽  
Amy L. Schreier ◽  
Dorian G. Russell ◽  
Zachary S. Jacobson ◽  
Carrie Merrigan‐Johnson ◽  
...  
Keyword(s):  
Costa Rica ◽  
Edge Effects ◽  
Tropical Rainforest ◽  
Alouatta Palliata ◽  
Howler Monkey ◽  
Mantled Howler ◽  
Mantled Howler Monkey

scholarly journals Co-structure analysis and genetic associations reveal insights into pinworms (Trypanoxyuris) and primates (Alouatta palliata) microevolutionary dynamics

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Brenda Solórzano-García ◽  
Ella Vázquez-Domínguez ◽  
Gerardo Pérez-Ponce de León ◽  
Daniel Piñero
Keyword(s):  
Mitochondrial Dna ◽  
Host Specificity ◽  
Dna Sequences ◽  
Evolutionary History ◽  
Alouatta Palliata ◽  
Howler Monkey ◽  
Genetic Associations ◽  
Howler Monkeys ◽  
Mantled Howler ◽  
Species Specific

Abstract Background In parasitism arm race processes and red queen dynamics between host and parasites reciprocally mold many aspects of their genetics and evolution. We performed a parallel assessment of population genetics and demography of two species of pinworms with different degrees of host specificity (Trypanoxyuris multilabiatus, species-specific; and T. minutus, genus-specific) and their host, the mantled howler monkey (Alouatta palliata), based on mitochondrial DNA sequences and microsatellite loci (these only for the host). Given that pinworms and primates have a close co-evolutionary history, covariation in several genetic aspects of their populations is expected. Results Mitochondrial DNA revealed two genetic clusters (West and East) in both pinworm species and howler monkeys, although population structure and genetic differentiation were stronger in the host, while genetic diversity was higher in pinworms than howler populations. Co-divergence tests showed no congruence between host and parasite phylogenies; nonetheless, a significant correlation was found between both pinworms and A. palliata genetic pairwise distances suggesting that the parasites’ gene flow is mediated by the host dispersal. Moreover, the parasite most infective and the host most susceptible haplotypes were also the most frequent, whereas the less divergent haplotypes tended to be either more infective (for pinworms) or more susceptible (for howlers). Finally, a positive correlation was found between pairwise p-distance of host haplotypes and that of their associated pinworm haplotypes. Conclusion The genetic configuration of pinworm populations appears to be molded by their own demography and life history traits in conjunction with the biology and evolutionary history of their hosts, including host genetic variation, social interactions, dispersal and biogeography. Similarity in patterns of genetic structure, differentiation and diversity is higher between howler monkeys and T. multilabiatus in comparison with T. minutus, highlighting the role of host-specificity in coevolving processes. Trypanoxyuris minutus exhibits genetic specificity towards the most frequent host haplotype as well as geographic specificity. Results suggest signals of potential local adaptation in pinworms and further support the notion of correlated evolution between pinworms and their primate hosts.

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