A REAPPRAISAL OF THE AQUATIC SPECIALIZATIONS OF THE GALAPAGOS MARINE IGUANA (
            <i>AMBLYRHYNCHUS CRISTATUS</i>
            )

Dawson, William R.; Bartholomew, George A.; Bennett, Albert A.

doi:10.1111/j.1558-5646.1977.tb01083.x

Cited by 29 publications

(15 citation statements)

References 22 publications

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“…Moreover, some workers voiced concerns about specific adaptive interpretations of characters shared more widely in their clades (e.g. Dawson and Schmidt-Nielsen, 1964;Dawson et al, 1977). What those earlier studies lacked was not necessarily a general perspective on the importance of phylogeny, but rather a formal logical and statistical methodology for incorporating detailed phylogenetic information.…”

Section: Phylogeny and Modern (Statistical) Comparative Methodsmentioning

confidence: 99%

Phylogenetic approaches in comparative physiology

Garland

Bennett

Rezende

2005

Journal of Experimental Biology

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608

569

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SUMMARY Over the past two decades, comparative biological analyses have undergone profound changes with the incorporation of rigorous evolutionary perspectives and phylogenetic information. This change followed in large part from the realization that traditional methods of statistical analysis tacitly assumed independence of all observations, when in fact biological groups such as species are differentially related to each other according to their evolutionary history. New phylogenetically based analytical methods were then rapidly developed, incorporated into `the comparative method', and applied to many physiological, biochemical, morphological and behavioral investigations. We now review the rationale for including phylogenetic information in comparative studies and briefly discuss three methods for doing this(independent contrasts, generalized least-squares models, and Monte Carlo computer simulations). We discuss when and how to use phylogenetic information in comparative studies and provide several examples in which it has been helpful, or even crucial, to a comparative analysis. We also consider some difficulties with phylogenetically based statistical methods, and of comparative approaches in general, both practical and theoretical. It is our personal opinion that the incorporation of phylogeny information into comparative studies has been highly beneficial, not only because it can improve the reliability of statistical inferences, but also because it continually emphasizes the potential importance of past evolutionary history in determining current form and function.

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Section: Phylogeny and Modern (Statistical) Comparative Methodsmentioning

confidence: 99%

Phylogenetic approaches in comparative physiology

Garland

Bennett

Rezende

2005

Journal of Experimental Biology

Self Cite

608

569

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“…It therefore seems logical that most of their adaptations are for a terrestrial way of life. However, Dawson et al (1977) suggest that marine iguanas' most strenuous activities occur in water at body temperatures around 25 ~ C, and are surprised to find no clear signs of adaptation to hard exercise at this body temperature. But male and female activities on land during the reproductive season appear far more strenuous (Boersma 1984;Eibl-Eibesfeldt 1966;Trillmich 1983;Rauch, personal communication).…”

Section: Why Have Marine Iguanas Not Adapted To Low Operating Temperamentioning

confidence: 99%

“…Only SFs are truly amphibious and derive the full benefits of reptilian pre-adaptations to this mode of life (Dawson et al 1977). An estimated 50% of the Fernandina study colony and more than 80% of the Caamafio population were IFs.…”

Section: Why Have Marine Iguanas Not Adapted To Low Operating Temperamentioning

confidence: 99%

“…Swimming and diving abilities and cardiovascular mechanisms for heat retention resemble those of typical terrestrial reptiles (Bartholomew and Lasiewski 1965;Bartholomew et al 1976;Bennett et al 1975;Dawson et al 1977). Thus behavioral mechanisms must be vital in allowing them to use their exceptional food resource efficiently enough to sustain their very large colonies.…”

Section: Introductionmentioning

confidence: 99%

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Foraging strategies of the marine iguana, Amblyrhynchus cristatus

Trillmich

1986

Behav Ecol Sociobiol

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“…Dawson et al, 1977; Dejours et alDecomposition of interspecific variation in thermal performance curves for running and swimming speed into three major directions (see text for details) using Eq. (1).…”

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confidence: 99%