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Your search keyword '"Novosolov, Maria"' showing total 3 results
Start Over Author "Novosolov, Maria" Topic allometry
3 results on '"Novosolov, Maria"'

2. Late bloomers and baby boomers: ecological drivers of longevity in squamates and the tuatara.

Author

Scharf, Inon, Feldman, Anat, Novosolov, Maria, Pincheira-Donoso, Daniel, Das, Indraneil, Böhm, Monika, Uetz, Peter, Torres-Carvajal, Omar, Bauer, Aaron, Roll, Uri, and Meiri, Shai

Subjects
BABY boom generation, LONGEVITY, SQUAMATA, TUATARA, LIFE history theory, ALLOMETRY
Abstract

Aim Longevity is an important life-history trait, directly linked to the core attributes of fitness (reproduction and survival), yet large-scale comparative studies quantifying its implications for the ecology and life history of ectotherms are scarce. We tested the allometry of longevity in squamates and the tuatara, and determined how longevity is related to key environmental characteristics and life-history traits. Predictions based on life-history theory are expected to hold true for ectotherms, similarly to mammals and birds. Location World-wide. Methods We assembled from the literature a dataset of the maximum longevities of more than a thousand squamate species, representing c. 10% of their known species diversity, their phylogenetic relationships and multiple life-history and ecological variables. Correcting for phylogeny, we modelled the link between squamate longevity and both key life-history traits, such as body mass and age at first reproduction, and important environmental factors, such as latitude and primary productivity within species distributional ranges. Results Large-bodied species live for longer than small ones, but body size explains far less of the variance in longevity than it does in mammals and birds. Accounting for body size, squamate brood frequency is negatively correlated with longevity, while age at first reproduction is positively correlated with longevity. This points to a continuum of slow-to-fast life-history strategies. Squamates in high latitudes and cold regions live for longer, probably because a shorter season of activity translates to slower development, older age at first reproduction and hence to increased longevity. Individuals live longer in captivity than in the wild. Herbivorous and omnivorous squamates live for longer than carnivorous ones. We postulate that low-quality nutrition reduces growth rates, promotes a relative decline in reproductive rates and thus prolongs life. Main conclusions Our results support key predictions from life-history theory and suggest that reproducing more slowly and at older ages, being herbivorous and, plausibly, lowering metabolism, result in increased longevity. [ABSTRACT FROM AUTHOR]

Published
2015
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3. Cope’s Rule and the Universal Scaling Law of Ornament Complexity

Author

Maria Novosolov, R. Martínez, Pasquale Raia, Luciano Teresi, Shai Meiri, Francesco Carotenuto, Paolo Piras, Federico Passaro, Mattia Antonio Baiano, Leonardo Maiorino, Yuval Itescu, Mikael Fortelius, Raia, Pasquale, Passaro, Federico, Carotenuto, Francesco, Maiorino, Leonardo, Piras, Paolo, Teresi, Luciano, Meiri, Shai, Itescu, Yuval, Novosolov, Maria, Baiano, Mattia Antonio, Martínez, Ricard, Fortelius, Mikael, Maiorino, L., Piras, P., Teresi, L., Meiri, S., Itescu, Y., Novosolov, M., Baiano, M. A., Martínez, R., and Fortelius, M.

Subjects
ORNAMENTAL STRUCTURES, Scaling law, Ecology, Hetero-Chrony, Ornaments, Biology, Body size, SEXUAL SELECTION, Ciencias de la Tierra y relacionadas con el Medio Ambiente, purl.org/becyt/ford/1 [https], purl.org/becyt/ford/1.5 [https], Evolutionary biology, Sexual selection, biological scaling, allometry, sexual selection, hetero- chrony, ornamental structures, BIOLOGICAL SCALING, Ciencias Ambientales y de la Tierra, HETEROCHRONY, Allometry, Meteorología y Ciencias Atmosféricas, Heterochrony, Ecology, Evolution, Behavior and Systematics, Selection (genetic algorithm), Cope's rule, CIENCIAS NATURALES Y EXACTAS, ALLOMETRY
Abstract

Fil: Raia, Pasquale. Università degli Studi di Napoli Federico II; Italia Fil: Passaro, Federico. Università degli Studi di Napoli Federico II; Italia Fil: Carotenuto, Francesco. Università degli Studi di Napoli Federico II; Italia Fil: Maiorino, Leonardo. Università degli Studi Roma Tre; Italia Fil: Piras, Paolo. Università degli Studi Roma Tre; Italia Fil: Teresi, Luciano. Università degli Studi Roma Tre; Italia Fil: Meiri, Shai. Tel Aviv University; Israel Fil: Itescu, Yuval. Tel Aviv University; Israel Fil: Novosolov, Maria. Tel Aviv University; Israel Fil: Baiano, Mattia A. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Baiano, Mattia A. Instituto Catalán de Paleontología Miquel Crusafont; España Fil: Baiano, Mattia A. Universidad Nacional de Río Negro; Argentina Fil: Martínez, Ricard. Universitat Autònoma de Barcelona; España Fil: Fortelius, Mikael. University Of Helsinski; Finlandia Luxuriant, bushy antlers, bizarre crests, and huge, twisting horns and tusks are conventionally understood as products of sexual selection. This view stems from both direct observation and from the empirical finding that the size of these structures grows faster than body size (i.e., ornament size shows positive allometry).We contend that the familiar evolutionary increase in the complexity of ornaments over time in many animal clades is decoupled from ornament size evolution. Increased body size comes with extended growth. Since growth scales to the quarter power of body size, we predicted that ornament complexity should scale according to the quarter power law as well, irrespective of the role of sexual selection in the evolution and function of the ornament. To test this hypothesis, we selected three clades (ammonites, deer, and ceratopsian dinosaurs) whose species bore ornaments that differ in terms of the importance of sexual selection to their evolution.We found that the exponent of the regression of ornament complexity to body size is the same for the three groups and is statistically indistinguishable from0.25.We suggest that the evolution of ornament complexity is a by-product of Cope’s rule. We argue that although sexual selection may control size in most ornaments, it does not influence their shape.

Published
2015

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