The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
M. F. Martínez-polanco - One of the best experts on this subject based on the ideXlab platform.
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Ancient DNA of Guinea Pigs ( Cavia spp.) Indicates a Probable New Center of Domestication and Pathways of Global Distribution
Scientific reports, 2020Co-Authors: Edana Lord, Catherine J. Collins, Susan D. Defrance, Michelle J. Lefebvre, Fabienne Pigière, Peter Eeckhout, Céline Erauw, Scott M. Fitzpatrick, P. F. Healy, M. F. Martínez-polancoAbstract:Guinea pigs (Cavia spp.) have a long association with humans. From as early as 10,000 years ago they were a wild food source. Later, domesticated Cavia porcellus were dispersed well beyond their native range through pre-Columbian exchange networks and, more recently, widely across the globe. Here we present 46 complete mitogenomes of archaeological guinea pigs from sites in Peru, Bolivia, Colombia, the Caribbean, Belgium and the United States to elucidate their evolutionary history, origins and paths of dispersal. Our results indicate an independent centre of domestication of Cavia in the eastern Colombian Highlands. We identify a Peruvian origin for the initial introduction of domesticated guinea pigs (Cavia porcellus) beyond South America into the Caribbean. We also demonstrate that Peru was the probable source of the earliest known guinea pigs transported, as part of the exotic pet trade, to both Europe and the southeastern United States. Finally, we identify a modern reintroduction of guinea pigs to Puerto Rico, where local inhabitants use them for food. This research demonstrates that the natural and cultural history of guinea pigs is more complex than previously known and has implications for other studies regarding regional to global-scale studies of mammal domestication, translocation, and distribution.
Norbert Sachser - One of the best experts on this subject based on the ideXlab platform.
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Species-level differentiation of two cryptic species pairs of wild cavies, genera Cavia and Galea, with a discussion of the relationship between social systems and phylogeny in the Caviinae
Canadian Journal of Zoology, 2004Co-Authors: Fritz Trillmich, Cornelia Kraus, Joachim Künkele, Matthias Asher, Mario Clara, Gabriele Dekomien, Jörg T. Epplen, Alvaro Saralegui, Norbert SachserAbstract:Two little-known species of guinea-pig from the genera Cavia and Galea (Cavia magna Ximenez, 1980 and Galea sp. nov.) have recently been studied in more detail with respect to their behavior, socia...
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maturation of epididymal spermatozoa in the nondomesticated guinea pigs Cavia aperea and galea musteloides
Journal of Andrology, 2000Co-Authors: Trevor G Cooper, Christine Kunzl, Susanne Weydert, C. H. Yeung, Norbert SachserAbstract:The physiological changes occurring in spermatozoa in the male reproductive tract of 2 nondomesticated species of South American guinea pigs with different mating systems were studied. Cavia aperea, the wild ancestor of the domesticated guinea pig, has a polygynous mating system, whereas Galea musteloides exhibits promiscuous mating behavior. The epididymis of both species resembled that of the domesticated guinea pig, with a swathe of tubule convolutions (linking the 2 major parts of the organ) that was of smaller size in Cavia but not Galea. Higher relative epididymal weight was demonstrated in the promiscuous species. During their journey through the epididymis, spermatozoa from Galea developed their potential for motility expression more proximally than did those of Cavia, but motility developed into forward progression in the same region in both species. The maximal velocities exhibited by mature Cavia sperm in vitro were greater than those of Galea. Spermatozoa from Cavia were twice the length of those from Galea, they had larger heads, and the acrosomes of single sperm were more sensitive to disruption during morphological preparation. Only in Cavia did agglutination of sperm into rouleaux occur, after the potential for motility had been developed. Migration of the cytoplasmic droplet along the midpiece occurred in the same regions in both species and before agglutination in Cavia. It is suggested that the male's reproductive strategy (polygyny vs promiscuity) dictates the size of the testis and epididymis, whereas the female's reproductive physiology (induced ovulation vs cyclicity) influences the posttesticular development of sperm morphology and motility in the epididymis.
Edana Lord - One of the best experts on this subject based on the ideXlab platform.
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Ancient DNA of Guinea Pigs ( Cavia spp.) Indicates a Probable New Center of Domestication and Pathways of Global Distribution
Scientific reports, 2020Co-Authors: Edana Lord, Catherine J. Collins, Susan D. Defrance, Michelle J. Lefebvre, Fabienne Pigière, Peter Eeckhout, Céline Erauw, Scott M. Fitzpatrick, P. F. Healy, M. F. Martínez-polancoAbstract:Guinea pigs (Cavia spp.) have a long association with humans. From as early as 10,000 years ago they were a wild food source. Later, domesticated Cavia porcellus were dispersed well beyond their native range through pre-Columbian exchange networks and, more recently, widely across the globe. Here we present 46 complete mitogenomes of archaeological guinea pigs from sites in Peru, Bolivia, Colombia, the Caribbean, Belgium and the United States to elucidate their evolutionary history, origins and paths of dispersal. Our results indicate an independent centre of domestication of Cavia in the eastern Colombian Highlands. We identify a Peruvian origin for the initial introduction of domesticated guinea pigs (Cavia porcellus) beyond South America into the Caribbean. We also demonstrate that Peru was the probable source of the earliest known guinea pigs transported, as part of the exotic pet trade, to both Europe and the southeastern United States. Finally, we identify a modern reintroduction of guinea pigs to Puerto Rico, where local inhabitants use them for food. This research demonstrates that the natural and cultural history of guinea pigs is more complex than previously known and has implications for other studies regarding regional to global-scale studies of mammal domestication, translocation, and distribution.
Céline Erauw - One of the best experts on this subject based on the ideXlab platform.
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Ancient DNA of Guinea Pigs ( Cavia spp.) Indicates a Probable New Center of Domestication and Pathways of Global Distribution
Scientific reports, 2020Co-Authors: Edana Lord, Catherine J. Collins, Susan D. Defrance, Michelle J. Lefebvre, Fabienne Pigière, Peter Eeckhout, Céline Erauw, Scott M. Fitzpatrick, P. F. Healy, M. F. Martínez-polancoAbstract:Guinea pigs (Cavia spp.) have a long association with humans. From as early as 10,000 years ago they were a wild food source. Later, domesticated Cavia porcellus were dispersed well beyond their native range through pre-Columbian exchange networks and, more recently, widely across the globe. Here we present 46 complete mitogenomes of archaeological guinea pigs from sites in Peru, Bolivia, Colombia, the Caribbean, Belgium and the United States to elucidate their evolutionary history, origins and paths of dispersal. Our results indicate an independent centre of domestication of Cavia in the eastern Colombian Highlands. We identify a Peruvian origin for the initial introduction of domesticated guinea pigs (Cavia porcellus) beyond South America into the Caribbean. We also demonstrate that Peru was the probable source of the earliest known guinea pigs transported, as part of the exotic pet trade, to both Europe and the southeastern United States. Finally, we identify a modern reintroduction of guinea pigs to Puerto Rico, where local inhabitants use them for food. This research demonstrates that the natural and cultural history of guinea pigs is more complex than previously known and has implications for other studies regarding regional to global-scale studies of mammal domestication, translocation, and distribution.
Peter Eeckhout - One of the best experts on this subject based on the ideXlab platform.
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Ancient DNA of Guinea Pigs ( Cavia spp.) Indicates a Probable New Center of Domestication and Pathways of Global Distribution
Scientific reports, 2020Co-Authors: Edana Lord, Catherine J. Collins, Susan D. Defrance, Michelle J. Lefebvre, Fabienne Pigière, Peter Eeckhout, Céline Erauw, Scott M. Fitzpatrick, P. F. Healy, M. F. Martínez-polancoAbstract:Guinea pigs (Cavia spp.) have a long association with humans. From as early as 10,000 years ago they were a wild food source. Later, domesticated Cavia porcellus were dispersed well beyond their native range through pre-Columbian exchange networks and, more recently, widely across the globe. Here we present 46 complete mitogenomes of archaeological guinea pigs from sites in Peru, Bolivia, Colombia, the Caribbean, Belgium and the United States to elucidate their evolutionary history, origins and paths of dispersal. Our results indicate an independent centre of domestication of Cavia in the eastern Colombian Highlands. We identify a Peruvian origin for the initial introduction of domesticated guinea pigs (Cavia porcellus) beyond South America into the Caribbean. We also demonstrate that Peru was the probable source of the earliest known guinea pigs transported, as part of the exotic pet trade, to both Europe and the southeastern United States. Finally, we identify a modern reintroduction of guinea pigs to Puerto Rico, where local inhabitants use them for food. This research demonstrates that the natural and cultural history of guinea pigs is more complex than previously known and has implications for other studies regarding regional to global-scale studies of mammal domestication, translocation, and distribution.