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Ontogenetic variation in skull shape of Thrichomys apereoides (Rodentia : Echimyidae)
(Amer Soc Mammalogists, 1999-02-01)
The pattern of change in shape during postnatal development in skulls of punare (Thrichomys apereoides) skulls, was studied by geometric morphometric techniques. Skull shape observed in T. apereoides varied both with size ...
The Ontogenetic Development Of Study Activity: A Literature Review
(Cdid-centro Documentacion, Investigacion & Difusion, 2021-01-01)
The present article, based on Historical-Cultural Psychology, aims to clarify the ontogenetic development of the study activity, the guiding activity of the school age, covering its transition period, content, structure ...
Differential Bone Survivorship and Ontogenetic Development in Guanaco (Lama guanicoe)
(John Wiley & Sons Ltd, 2012-11)
This paper presents the results of a taphonomic research program conducted during the last five years. The main objective of this program was to investigate differential survivorship in guanaco (Lama guanicoe) ...
Ontogenetic variability in the limb bones histology of plains vizcacha (Lagostomus maximus, Chinchillidae, Rodentia): implications for life history reconstruction of fossil representatives
(Taylor & Francis Ltd, 2019-08-01)
Osteohistological studies provide information on the life history of extant and extinct vertebrates, such as growth dynamics, age, body size, sexual maturity, sexual dimorphism, soft tissues, among others aspects. In this ...
Ontogenetic dietary changes in male South American fur seals Arctocephalus australis in Patagonia
(Inter-Research, 2015-04-09)
This study assessed ontogenetic dietary changes in male South American fur sealsArctocephalus australis in northern and central Patagonia (Argentina) using stable isotope ratios (δ15N and δ13C) in vibrissae and bones. ...
Morphological trends in main stem of Pinus radiata D. Don: Transition between vegetative and reproductive phase
(TAYLOR & FRANCIS AS, 2007)
Developmental patterns of structural units of the main tree axis of Pinus radiata were investigated in two plantations in Chile growing under different ecological conditions. Environmental characteristics of sites were ...
Ontogenetic changes in feeding habits of northern elephant seals revealed by δ15N and δ13C analysis of growth layers in teeth
(Marine Ecology Progress Series, 2012)
Stable isotope analysis is useful for examining the feeding strategies of mammals. Isotopes in the annual deposition growth layers of dentine in teeth permit assessment of ontogenetic dietary shifts in individuals, because ...
Geographical and intrapopulation variation in the diet of a threatened marine predator, Pontoporia blainvillei (Cetacea)
(Wiley-Blackwell, 2018-01-01)
Understanding diet variation is a major concern when developing conservation guidelines for threatened species, especially for marine predators whose prey availability can be reduced by commercial fisheries. Diet can vary ...
Ontogenetic asynchrony in fish migrations may lead to disparate parasite assemblages: Implications for its use as biological tags
(Elsevier Science, 2021-07)
Several species of marine fishes perform seasonal migrations alternating foraging and spawning habitats during their life cycles. The knowledge of these movements is essential to define their population structure which is, ...
Comparative morphology of Liolaemus lizards precloacal glands
(Firenze University Press, 2014)
© Firenze University Press. Liolaemid lizards and amphisbaenids have precloacal pores in the anterior border of the cloaca, where epidermal glands drain and expel pheromonal secretions. Precloacal glands occur usually only ...