Polyembryonic development in Tatusia novemcincta

Patterson, J. T.

doi:10.1002/jmor.1050240405

Cited by 93 publications

(22 citation statements)

References 17 publications

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“…Delayed implantation has not been proved in humans but seems to be the cause of monozygous multiple births in the Armadillo. Patterson (1913) showed that in this animal it is normal for the blastocyst to remain free in the uterus for 3 weeks before implantation. This usually results in monozygous quads in the Texas species and octuplets in the South American species.…”

Section: Journal Of Obstetrics and Gynaecologymentioning

confidence: 79%

Incidence and Aetiology of Multiple Births in Nigeria

Cox¹

1963

BJOG

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Section: Journal Of Obstetrics and Gynaecologymentioning

confidence: 79%

Incidence and Aetiology of Multiple Births in Nigeria

Cox¹

1963

BJOG

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“…First, as mentioned above, the rapid range expansion of this species in the United States in the last 150 years (Humphrey 1974, Taulman and Robbins 1996, Freeman and Genoways 1998 suggests considerable movement of individuals out of extant populations, perhaps leading to little stability (ie few long-term residents) in armadillo populations. Second, nine-banded armadillos exhibit obligate polyembryony, whereby a single fertilized egg subsequently divides into multiple, genetically identical embryos (Newman and Patterson 1910, Patterson 1913, Hamlett 1932, Storrs and Williams 1968, Prodöhl et al 1996. In D. novemcinctus, this results in females giving birth to a single litter of genetically identical quadruplets each year.…”

Section: Introductionmentioning

confidence: 99%

Natal recruitment and adult retention in a population of nine-banded armadillos

Loughry

McDonough

2001

Acta Theriol

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2001. Natal recruitment and adult retention in a population of nine-banded armadillos. Acta Theriologica 46: 393-406.Nine-banded armadillos Dasypus novemcinctus Linnaeus, 1758 are interesting in part because (a) they give birth to litters of genetically identical quadruplets, and (b) the species' range has expanded rapidly throughout the southern United States during the last 150 years, suggesting substantial dispersal of individuals. Using data from 7 field seasons between 1992 and 1999, we examined the extent of juvenile recruitment and retention of adults in a population of armadillos from northern Florida. There were no sex differences in the likelihood of recruitment or most attributes of male and female recruits at any age. In the few cases where more than one littermate was recruited into the population, siblings were significantly more widely dispersed as adults than they were as juveniles, thus limiting opportunities for interaction among clonal siblings. There was some evidence that recruits ranged more widely than other individuals, suggesting recruits may have been searching for suitable sites to establish themselves. Recruits were heavier than non-recruits as both juveniles and yearlings, which may have aided in establishing a home range, but recruits were lighter than other animals as adults. Overall, slightly less than 50% of armadillos first captured as adults were never seen in a subsequent year, suggesting these individuals may have been transients. However, some adults remained in the population for multiple years, moving very little from the area where they were first sighted. As with recruits, there were no sex differences in the likelihood of adults being retained in the population nor in the attributes of retained males and females. Retained animals exhibited more extensive anatomical damage and moved farther between successive sightings within years than did non-residents. Adults were more likely to be retained in the population than juveniles were to be recruited, and retained adults were older, heavier, and exhibited more extensive anatomical damage than did recruits. Our data seem to indicate a population characterized by limited recruitment of juveniles (particularly of clonemates) and an adult population exhibiting considerable turnover from year to year, but with a core of individuals who are long-term residents.

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“…The deer breeds in the summer or early fall, but implantation does not occur until December. Patterson, in 1913, pointed out the existence of a pause of unknown length in the development of the Texas armadillo, Tatusia novemcincta. As in the badger, this pause seemed to result from the blastocyst failing to implant.…”

Section: Discussionmentioning

confidence: 99%

Observations on the embryology of the badger

Hamlett

1932

Anat. Rec.

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Polyembryonic development in Tatusia novemcincta

Cited by 93 publications

References 17 publications

Incidence and Aetiology of Multiple Births in Nigeria

Incidence and Aetiology of Multiple Births in Nigeria

Natal recruitment and adult retention in a population of nine-banded armadillos

Observations on the embryology of the badger

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