The use of the Gompertz curve in an analysis of the dynamics of lizard tail regeneration

Baranowitz, Steven; Salthe, Stanley N.; Maderson, P. F. A.

doi:10.1016/0022-5193(77)90325-3

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…Growth of the regenerating tail has also been explored (Cox, 1969;Baranowitz et al, 1977), but little attention has been paid to the growth of the intact original tail, although its morphology has been documented in a general way in various anatomical descriptions, and in a more specific way in more focused investigations (Etheridge, 1967;Mufti & Hafiz, 1972;Barbadillo & Martínez-Solano, 2002). Growth of the entire original tail has been addressed by some authors (Garland, 1985;Bates, 1989), but only recently (Bergmann & Russell, 2001) have patterns of growth within this segmentally arranged appendage been quantified.…”

Section: Introductionmentioning

confidence: 99%

“…Caudal autotomy in lizards has been the focus of many studies (reviewed by Bellairs & Bryant, 1985), with aspects of morphology (Bryant & Bellairs, 1967;Cox, 1969;Baranowitz, 1977;Salthe & Maderson, 1977;Russell & Bauer, 1992;Arnold, 1994) and ecology (Vitt, Congdon & Dickson, 1977;Arnold, 1984;Dial & Fitzpatrick, 1984;Jaksic & Greene, 1984;Zani, 1996) constituting the majority. Growth of the regenerating tail has also been explored (Cox, 1969;Baranowitz et al, 1977), but little attention has been paid to the growth of the intact original tail, although its morphology has been documented in a general way in various anatomical descriptions, and in a more specific way in more focused investigations (Etheridge, 1967;Mufti & Hafiz, 1972;Barbadillo & Martínez-Solano, 2002). Growth of the entire original tail has been addressed by some authors (Garland, 1985;Bates, 1989), but only recently (Bergmann & Russell, 2001) have patterns of growth within this segmentally arranged appendage been quantified.…”

Section: Introductionmentioning

confidence: 99%

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Tail growth in Chamaeleo dilepis (Sauria: Chamaeleonidae): functional implications of segmental patterns

2003

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Patterns of growth of caudal vertebrae in the chameleon Chamaeleo dilepis were determined using principal component analysis, and compared to growth of the entire tail relative to snout-vent length. Despite significant positive allometry of the whole tail, growth rates of vertebrae differed along the length of the tail. Specifically, there was a proximal region that grew positively allometrically, and an extensive distal portion that grew with negative allometry. Intervening, was a short transitional region of approximate isometry. Positive allometry of the entire tail resulted from the extensive proximal region that grew in this manner. Although the region of positive allometry extended further caudad than the m. caudofemoralis longus, m. retractor penis magnus, and m. ischiocaudalis, its extent correlated more closely with the presence of neural spines (which are used as a proxy for the extent of the m. transversospinalis) and with tail coiling in this species. The positively allometric region housed the non-segmental musculature of the tail and did not bend, and the negatively allometric region identified the portion of the tail that was prehensile.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tail growth in Chamaeleo dilepis (Sauria: Chamaeleonidae): functional implications of segmental patterns

2003

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Lizard and newt tail regeneration: A quantitative study

1979

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Almost perfect fits of the Gompertz equation to the growth in length of tail regenerates in the lizard, Lacerta lepida, and the newt, Notophthalmus viridescens, were obtained. Comparison of certain parameters of the equation with published mitotic index data suggests that the Gompertz equation characterizes each system at least from the time that significant mitotic activity is first observed histologically. An objective method for comparing the regeneration periods of the two species is described and applied. A unified hypothesis derived from consideration of properties of the Gompertz equation successfully accounts for the following phenomena reported, but previously unexplained, in the literature: (1) proximal amputations result in longer regenerates than do distal amputations; (2) proximal amputations elicit greater absolute rates of elongation (in mm/day) than do distal amputations; (3) the percent replaced of the length removed is rather constant, regardless of the absolute length regenerated; and (4) one of the parameters of the Gompertz equation appears to be lognormally distributed in a regenerating population. (See text for references.) A computerized interactive graphical system for normalizing growth equations of individual regenerates and integrating the mathematical model with potential candidates for biological control factors is briefly described.

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Regeneration, neural crest derivatives and retinoids: A new synthesis

Baranowitz¹

1989

Journal of Theoretical Biology

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The use of the Gompertz curve in an analysis of the dynamics of lizard tail regeneration

Cited by 5 publications

References 7 publications

Tail growth in Chamaeleo dilepis (Sauria: Chamaeleonidae): functional implications of segmental patterns

Tail growth in Chamaeleo dilepis (Sauria: Chamaeleonidae): functional implications of segmental patterns

Lizard and newt tail regeneration: A quantitative study

Regeneration, neural crest derivatives and retinoids: A new synthesis

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