Results 81 to 90 of about 384 (109)

Inter-population variation of carotenoids in Galápagos land iguanas (Conolophus subcristatus)

Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 2005
Carotenoids have received much attention from biologists because of their ecological and evolutionary implications in vertebrate biology. We sampled Galápagos land iguanas (Conolophus subcristatus) to investigate the types and levels of blood carotenoids and the possible factors affecting inter-population variation.
Costantini D, Dell'Omo G, Casagrande S, Fabiani A, CAROSI, MONICA, Bertacche V, Marquez C, Snell H, Snell H, Tapia W, Gentile G.   +10 more
openaire   +4 more sources

Temporal and Spatial Covariation of Gender and Oxidative Stress in the Galápagos Land IguanaConolophus subcristatus

Physiological and Biochemical Zoology, 2009
Abstract Physiological responses to organismal stress can have direct impacts on individual fitness. While responses to stressors mediated by glucocorticoid hormones are well studied, the regulation of the redox system via pro-oxidant and antioxidant balance as well as the natural causes of oxidative stress in nature remain poorly known, especially for
Costantini, D, Dell'Omo, G, De Filippis, SP, Marquez, C, Snell, HL, Snell, HM, Tapia, W, Brambilla, G, GENTILE, GABRIELE   +8 more
openaire   +4 more sources

Plasma concentrations of progesterone and estradiol and the relation to reproduction in Galápagos land iguanas, Conolophus marthae and C. subcristatus (Squamata, Iguanidae)

Animal Reproduction Science, 2016
In a combined approach, endocrine and ultrasonic analyses were performed to assess reproduction of two syntopic populations of terrestrial Galápagos iguanas the Conolophus marthae (the Galápagos Pink Land Iguana) and C. subcristatus on the Volcán Wolf (Isabela Island).
Michela Onorati, Giulia Sancesario, Donatella Pastore, Sergio Bernardini, Jorge E. Carrión, Monica Carosi, Leonardo Vignoli, Davide Lauro, Gabriele Gentile   +8 more
openaire   +4 more sources

Hybridization between the Galápagos land and marine iguana (Canolophus subcristatusandAmblyrhynchus cristatus) on Plaza Sur

Journal of Zoology, 1997
Hybridization plays an important role in the evolution of some of the vertebrate taxa on the Galápagos Islands, such as the Darwin finches. Conversely, only a single possible hybrid between the Galápagos marine iguana (Amblyrhynchus) and the land iguana (Conolophus) has been reported from the island Plaza Sur.
Rassmann, K, Trillmich, Fritz, Tautz, D
openaire   +3 more sources

Reproduction in the Iguana Conolophus subcristatus on Fernandina Island, Galapagos: Clutch Size and Migration Costs

The American Naturalist, 1983
Adult land iguanas (Conolophus subcristatus) on Fernandina Island, Galapagos, live in an unpredictable, predator-free environment. They lack resource competitors. The population structure allows direct comparison of adaptations to varying environments because the entire population can be assumed to share the same genetic background. Reproductive effort
openaire   +1 more source

Galápagos Land-Iguana (Conolophus subcristatus)

This is the species account about the Galápagos Land-Iguana (Conolophus subcristatus), a chapter in the Reptiles of Ecuador book. This account summarizes novel as well as historical information (recognition, natural history, distribution, conservation, etymology, and relevant literature) about the species and provides maps and images to facilitate ...
Alejandro Arteaga, Juan Manuel Guayasamin   +1 more
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Carotenoidi e stress ossidativo nelle iguane terrestri delle Galápagos (Conolophus subcristatus).

2005
I carotenoidi sono un gruppo di pigmenti sintetizzati esclusivamente da organismi fotosintetici che gli animali possono acquisire esclusivamente attraverso la dieta. I radicali liberi sono invece prodotti metabolici altamente reattivi ritenuti essere la principale causa prossima dell'accumulo di danni ossidativi e dell'invecchiamento nei vertebrati ...
Dell'Omo, G, Costantini, D, GENTILE, GABRIELE   +2 more
openaire   +1 more source

Estado poblacional de las iguanas terrestres (Conolophus subcristatus, C. pallidus y C. marthae: Squamata, Iguanidae), Islas Galápagos.

2010
Three species of land iguanas exist in Galápagos, all belonging to the same genus Conolophus. Of these, C. pallidus (Heller 1903) is endemic to Santa Fe Island; C. subcristatus (Gray 1831) occurs in 11 sites in four islands, whereas C. marthae (Gentile and Snell, 2009) inhabits the northern-western slopes of volcan Wolf (Isabela, island), above 500 m ...
Márquez, CM, Muñoz, EA, GENTILE, GABRIELE, Tapia, W, Zabala, FJ, Naranjo, S, Llerena, AJ   +6 more
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Antibiotico resistenza in batteri commensali delle iguane terrestri (Conolophus pallidus e C. subcristatus) delle Galápagos: studio del livello zero e della dinamica di disseminazione.

2007
Per valutare la dinamica e l’ecologia di disseminazione dell’antibiotico-resistenza acquisita è stato studiato il microbiota commensale delle iguane terrestri dell’Arcipelago delle Galápagos, provenienti da aree differentemente esposte sia alla pressione selettiva dell’uso degli agenti antibatterici sia a interazioni con l’uomo e altre specie animali.
THALLER, MARIA CRISTINA, MIGLIORE, LUCIANA, Torrente, M, Tapia, W, Cedeño, V, Rossolini, GM, GENTILE, GABRIELE   +6 more
openaire   +1 more source

Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
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