Dynamics of a brachiating siamang [Hylobates (Symphalangus) syndactylus]

Nature ◽  
1974 ◽  
Vol 248 (5445) ◽  
pp. 259-260 ◽  
Author(s):  
JOHN FLEAGLE
Keyword(s):  
Symphalangus Syndactylus

Hybrid ape offspring of a mating of gibbon and siamang

Science ◽  
1979 ◽  
Vol 205 (4403) ◽  
pp. 308-310 ◽  
Author(s):  
RH Myers ◽  
DA Shafer
Keyword(s):  
Parental Species ◽  
Organizer Region ◽  
Nucleolus Organizer Region ◽  
Structural Rearrangement ◽  
Female Offspring ◽  
Nucleolus Organizer ◽  
Single Chromosome ◽  
Symphalangus Syndactylus ◽  
Hylobates Moloch ◽  
Lesser Apes

The serendipitous mating of a male gibbon, Hylobates moloch, and a female siamang, Symphalangus syndactylus, has produced two female offspring born 1 year apart. The hybrid karyotype of 47 chromosomes comprises the haploid complements of the parental species, 22 for the gibbon and 25 for the siamang. Chromosomal G and C banding comparisons revealed no clear homologies between the parental karyotypes except for the single chromosome in each species containing the nucleolus organizer region. The lack of homology suggests that the structural rearrangement of chromosomes has played a major role in the process of speciation for these lesser apes.

scholarly journals The myoglobin of primates: Symphalangus syndactylus (SIAMANG)

FEBS Letters ◽  
1977 ◽  
Vol 78 (1) ◽  
pp. 113-118 ◽  
Author(s):  
E.J. Bruce ◽  
O. Castillo ◽  
H. Lehmann
Keyword(s):  
Symphalangus Syndactylus

scholarly journals HABITAT SIAMANG (Symphalangus syndactylus, Raffles 1821) DI KAWASAN TERDEGRADASI TAMAN NASIONAL KERINCI SEBLAT, KABUPATEN PESISIR SELATAN

2019 ◽  
Vol 16 (2) ◽  
pp. 133-145
Author(s):  
M Bismark ◽  
Sofian Iskandar ◽  
Reny Sawitri ◽  
N. M. Heriyanto ◽  
Yulaeka Yulaeka
Keyword(s):  
Symphalangus Syndactylus

scholarly journals Total Eclipse of the Zoo: Animal Behavior during a Total Solar Eclipse

Animals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 587
Author(s):  
Adam Hartstone-Rose ◽  
Edwin Dickinson ◽  
Lisa M. Paciulli ◽  
Ashley R. Deutsch ◽  
Leon Tran ◽  
...  
Keyword(s):  
South Carolina ◽  
Solar Eclipse ◽  
Behavioral Responses ◽  
Gorilla Gorilla ◽  
Total Solar Eclipse ◽  
Papio Hamadryas ◽  
Symphalangus Syndactylus ◽  
The Hours ◽  
Phoenicopterus Ruber ◽  
Observation Times

The infrequency of a total solar eclipse renders the event novel to those animals that experience its effects and, consequently, may induce anomalous behavioral responses. However, historical information on the responses of animals to eclipses is scant and often conflicting. In this study, we qualitatively document the responses of 17 vertebrate taxa (including mammals, birds, and reptiles) to the 2017 total solar eclipse as it passed over Riverbanks Zoo and Garden in Columbia, South Carolina. In the days leading up to the eclipse, several focal teams, each consisting of researchers, animal keepers, and student/zoo volunteers conducted baseline observations using a combination of continuous ad libitum and scan sampling of each animal during closely matched seasonal conditions. These same focal teams used the same protocol to observe the animals in the hours preceding, during, and immediately following the eclipse. Additionally, for one species—siamangs (Symphalangus syndactylus)—live video/audio capture was also employed throughout observations to capture behavior during vocalizations for subsequent quantitative analysis. Behavioral responses were classified into one or more of four overarching behavioral categories: normal (baseline), evening, apparent anxiety, and novel. Thirteen of seventeen observed taxa exhibited behaviors during the eclipse that differed from all other observation times, with the majority (8) of these animals engaging in behaviors associated with their evening or nighttime routines. The second predominant behavior was apparent anxiety, documented in five genera: baboons (Papio hamadryas), gorillas (Gorilla gorilla gorilla), giraffes (Giraffa cf. camelopardalis), flamingos (Phoenicopterus ruber), and lorikeets (Trichoglossus moluccanus and Trichoglossus haematodus). Novel behaviors characterized by an increase in otherwise nearly sedentary activity were observed only in the reptiles, the Galapagos tortoise (Chelonoidis nigra) and the Komodo dragon (Varanus komodoensis). While the anthropogenic influences on animal behaviors—particularly those relating to anxiety—cannot be discounted, these observations provide novel insight into the observed responses of a diverse vertebrate sample during a unique meteorological stimulus, insights that supplement the rare observations of behavior during this phenomenon for contextualizing future studies.

Fire, demography and the persistence of siamang (Symphalangus syndactylus: Hylobatidae) in a Sumatran rainforest

2003 ◽  
Vol 6 (2) ◽  
pp. 115-121 ◽  
Author(s):  
Timothy G. O'Brien ◽  
Margaret F. Kinnaird ◽  
Anton Nurcahyo ◽  
Maya Prasetyaningrum ◽  
Muhammad Iqbal
Keyword(s):  
Symphalangus Syndactylus

scholarly journals The Discovery of Chromosome Trisomy 22: A Novel Chromosomal Feature of Siamang (Symphalangus syndactylus)

CYTOLOGIA ◽  
2008 ◽  
Vol 73 (2) ◽  
pp. 145-149
Author(s):  
Sitthisak Jantarat ◽  
Alongkoad Tanomtong ◽  
Praween Supanuam ◽  
Sarawut Kaewsri ◽  
Worapon Aengwanich
Keyword(s):  
Symphalangus Syndactylus

scholarly journals Relationships between the hard and soft dimensions of the nose in Pan troglodytes and Homo sapiens reveal the nasal protrusions of Plio-Pleistocene hominids

2021 ◽  
Author(s):  
Ryan M. Campbell ◽  
Gabriel Vinas ◽  
Maciej Henneberg
Keyword(s):  
Pan Troglodytes ◽  
Pan Paniscus ◽  
Homo Sapiens ◽  
Training Sample ◽  
Papio Hamadryas ◽  
Modern Humans ◽  
Symphalangus Syndactylus ◽  
Facial Approximation ◽  
Angular Measurements ◽  
Joint Prediction

By identifying similarity in bone and soft tissue covariation patterns in hominids, it is possible to produce facial approximation methods that are compatible with more than one species of primate. In this study, we conducted an interspecific comparison of the nasomaxillary region in chimpanzees and modern humans with the aim of producing a method for predicting the nasal protrusions of ancient Plio-Pleistocene hominids. We addressed this aim by first collecting and performing regression analyses of linear and angular measurements of nasal cavity length and inclination in modern humans ( Homo  sapiens; n = 72) and chimpanzees ( Pan troglodytes ;  n  = 19), and then by performing a set of out-of-group tests. The first test was performed on two subjects that belonged to the same genus as the training sample, i.e.,  Homo  ( n  = 1) and  Pan  ( n  = 1), and the second test, which functioned as an interspecies compatibility test, was performed on  Pan paniscus  ( n  = 1),  Gorilla gorilla  ( n  = 3),  Pongo pygmaeus  ( n  = 1),  Pongo abelli  ( n  = 1),  Symphalangus syndactylus  ( n  = 3), and  Papio hamadryas  ( n  = 3). We identified statistically significant correlations in both humans and chimpanzees with slopes that displayed homogeneity of covariation. Joint prediction formulae were found to be compatible with humans and chimpanzees as well as all other African great apes, i.e., bonobos and gorillas. The main conclusion that can be drawn from this study is that regression models for approximating nasal projection are homogenous among humans and African apes and can thus be reasonably extended to ancestors leading to these clades.

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