Infant hybrids in a newly formed mixed-species group of howler monkeys (Alouatta guariba clamitans and Alouatta caraya) in northeastern Argentina

Primates ◽  
2008 ◽  
Vol 49 (4) ◽  
pp. 304-307 ◽  
Author(s):  
Ilaria Agostini ◽  
Ingrid Holzmann ◽  
Mario S. Di Bitetti
Keyword(s):  
Species Group ◽  
Alouatta Caraya ◽  
Howler Monkeys ◽  
Mixed Species ◽  
Alouatta Guariba Clamitans ◽  
Northeastern Argentina

Southern extension of the geographic range of black-and-gold howler monkeys (Alouatta caraya)

Mammalia ◽  
2019 ◽  
Vol 84 (1) ◽  
pp. 102-106 ◽  
Author(s):  
Márcia M.A. Jardim ◽  
Diego Queirolo ◽  
Felipe B. Peters ◽  
Fábio D. Mazim ◽  
Marina O. Favarini ◽  
...  
Keyword(s):  
Wide Distribution ◽  
Geographic Range ◽  
Howler Monkey ◽  
Forest Loss ◽  
Southern Brazil ◽  
Alouatta Caraya ◽  
Howler Monkeys ◽  
Pampa Biome ◽  
New Localities ◽  
Northeastern Argentina

Abstract The black-and-gold howler monkey (Alouatta caraya) is widely distributed in Brazil, Bolivia, Paraguay, and northeastern Argentina. Despite this wide distribution, it is locally threatened in some parts of its southern range by forest loss and fragmentation, and yellow fever outbreaks. We present 14 new localities of A. caraya occurrence in the Pampa biome of southern Brazil, extending its range southwards by approximately 100 km.

Determinants of daily path length in black and gold howler monkeys (Alouatta caraya) in northeastern Argentina

2016 ◽  
Vol 78 (8) ◽  
pp. 825-837 ◽  
Author(s):  
Mariana Raño ◽  
Martin M. Kowalewski ◽  
Alexis M. Cerezo ◽  
Paul A. Garber
Keyword(s):  
Path Length ◽  
Alouatta Caraya ◽  
Howler Monkeys ◽  
Daily Path Length ◽  
Northeastern Argentina

Molecular identification of Leishmania in free-ranging black and gold howler monkeys (Alouatta caraya) in northeastern Argentina

Acta Tropica ◽  
2020 ◽  
Vol 210 ◽  
pp. 105534
Author(s):  
Mariela Florencia Martínez ◽  
Martín M. Kowalewski ◽  
Magalí Gabriela Giuliani ◽  
Soraya Alejandra Acardi ◽  
Oscar Daniel Salomón
Keyword(s):  
Molecular Identification ◽  
Alouatta Caraya ◽  
Howler Monkeys ◽  
Free Ranging ◽  
Northeastern Argentina

Use of genetic tools to assess predation on reintroduced howler monkeys (Alouatta caraya) in Northeastern Argentina

Primates ◽  
2021 ◽  
Author(s):  
Luciana Inés Oklander ◽  
Mariela Caputo ◽  
Martin Kowalewski ◽  
Jorge Anfuso ◽  
Daniel Corach
Keyword(s):  
Alouatta Caraya ◽  
Howler Monkeys ◽  
Genetic Tools ◽  
Northeastern Argentina

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

2016 ◽  
Vol 5 (2) ◽  
pp. 198-206 ◽  
Author(s):  
Mariela Florencia Martínez ◽  
Martín Miguel Kowalewski ◽  
Oscar Daniel Salomón ◽  
Alejandro Gabriel Schijman
Keyword(s):  
Molecular Characterization ◽  
Alouatta Caraya ◽  
Howler Monkeys ◽  
Northeastern Argentina

Germination of native and exotic seeds dispersed by wild black-and-gold howler monkeys (Alouatta caraya): assessing deinhibition and scarification effects

Primates ◽  
2020 ◽  
Vol 61 (3) ◽  
pp. 519-527
Author(s):  
Darío M. Fergnani ◽  
Martín M. Kowalewski ◽  
Vanina A. Fernández
Keyword(s):  
Alouatta Caraya ◽  
Howler Monkeys ◽  
Exotic Seeds

Isolation, characterization and evaluation of 11 autosomal STRs suitable for population studies in black and gold howler monkeys Alouatta caraya

2006 ◽  
Vol 7 (1) ◽  
pp. 117-120 ◽  
Author(s):  
LUCIANA I. OKLANDER ◽  
GABRIEL E. ZUNINO ◽  
ANTHONY DI FIORE ◽  
DANIEL CORACH
Keyword(s):  
Population Studies ◽  
Alouatta Caraya ◽  
Autosomal Strs ◽  
Howler Monkeys

scholarly journals Individuals from different-looking animal species may group together to confuse shared predators: simulations with artificial neural networks

2006 ◽  
Vol 274 (1611) ◽  
pp. 827-832 ◽  
Author(s):  
Colin R Tosh ◽  
Andrew L Jackson ◽  
Graeme D Ruxton
Keyword(s):  
Animal Species ◽  
Empirical Work ◽  
Species Group ◽  
Mixed Species ◽  
Retinotopic Maps ◽  
Species Groups ◽  
Artificial Neural ◽  
Mixed Species Groups ◽  
Species Grouping ◽  
Prey Items

Individuals of many quite distantly related animal species find each other attractive and stay together for long periods in groups. We present a mechanism for mixed-species grouping in which individuals from different-looking prey species come together because the appearance of the mixed-species group is visually confusing to shared predators. Using an artificial neural network model of retinotopic mapping in predators, we train networks on random projections of single- and mixed-species prey groups and then test the ability of networks to reconstruct individual prey items from mixed-species groups in a retinotopic map. Over the majority of parameter space, cryptic prey items benefit from association with conspicuous prey because this particular visual combination worsens predator targeting of cryptic individuals. However, this benefit is not mutual as conspicuous prey tends to be targeted most poorly when in same-species groups. Many real mixed-species groups show the asymmetry in willingness to initiate and maintain the relationship predicted by our study. The agreement of model predictions with published empirical work, the efficacy of our modelling approach in previous studies, and the taxonomic ubiquity of retinotopic maps indicate that we may have uncovered an important, generic selective agent in the evolution of mixed-species grouping.

scholarly journals Identification and Evolutionary Characterization of Papillomavirus Sequences in New World Monkeys (Genera Sapajus and Alouatta) from Argentina

2021 ◽  
Author(s):  
Candelaria Sanchez Fernandez ◽  
Elisa M Bolatti ◽  
Andres C.A. Culasso ◽  
Diego Chouhy ◽  
Martin M Kowalewski ◽  
...  
Keyword(s):  
Pcr Amplification ◽  
Pcr Primers ◽  
Host Tree ◽  
New World Monkeys ◽  
Alouatta Caraya ◽  
Captive Populations ◽  
L1 Protein ◽  
Viral Sequences ◽  
Northeastern Argentina

Abstract Objective: In this study, we investigated the occurrence of papillomavirus (PV) infection in non-human primates (NHP, Platyrrhine) of northeastern Argentina by using broad-spectrum PCR primers at the L1 gene. In addition, we conducted a phylogenetic and coalescence analysis of viral sequences to explore their evolutionary history and evaluate the co-speciation hypothesis in the context of primate evolution. Methods: We obtained samples of 57 individuals from wild and captive populations of Alouatta caraya, Sapajus nigritus and Sapajus cay. We assessed PV infection by PCR amplification with the CUT primer system and sequencing of 337 bp (112 amino acids) of the L1 protein. The viral sequences were analyzed by phylogenetic and Bayesian coalescence methods to estimate the age of the most common recent ancestor (tMCRA) with BEAST, v1.4.8 software. We evaluated viral/host tree congruence with TreeMap v3.0. Results: We identified two novel putative PV sequences of the genus Gamma- PV in Sapajus sp and Alouatta caraya (SPV1 and AcPV1, respectively). The tMRCA of SPV1 was estimated at 11,941,682 years before present (ybp) and that of AcPV1 at 46,638,071 ybp, both predating the coalescence times of their hosts: 6.4 million years (MYA) and 6.8 MYA, respectively. Based on the comparison of primate and viral phylogenies, we could not reject the null hypothesis that the PV tree is no more congruent with the host tree than a random tree would be (P>0.05). Thus, a model of virus-host coevolution was rejected. Conclusion: This study presents the first report of PV infection in Platyrrhine species from Argentina, expands the range of described hosts for these viruses, and proposes new scenarios for their origin and dispersal.

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