Foraging strategies of the marine iguana, Amblyrhynchus cristatus
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چکیده
منابع مشابه
Algal Food Preferences and Seasonal Foraging Strategy of the Marine Iguana, Amblyrhynchus Cristatus, on Santa Cruz, Galápagos
The abundance of intertidal algae, algal food preferences, and foraging behavior of the marine iguana, Amblyrhynchus cristatus Bell, were studied at two sites on Santa Cruz Island, Galápagos, over a tropical cool and hot season. At both sites iguanas had a consistent, seasonally changing hierarchy of preferred algal species, selected according to their availability. During high low tides, Ulva ...
متن کاملA Reappraisal of the Aquatic Specializations of the Galapagos Marine Iguana (amblyrhynchus Cristatus).
I t is tautological to say that an organism is adapted to its environment. I t is even tautological to say that an organism is physiologically adapted to its environment. However, just as in the case of many morphological characters, i t is unwarranted to conclude that all aspects of the physiology of an organism have evolved in reference to a specific milieu. I t is equally gratuitous to assum...
متن کاملHuman disturbance alters endocrine and immune responses in the Galapagos marine iguana (Amblyrhynchus cristatus).
Anthropogenic disturbance is a relevant and widespread facilitator of environmental change and there is clear evidence that it impacts natural populations. While population-level responses to major anthropogenic changes have been well studied, individual physiological responses to mild disturbance can be equally critical to the long-term survival of a species, yet they remain largely unexamined...
متن کاملUneven frequency of Vibrio alginolyticus-group isolates among different populations of Galápagos marine iguana (Amblyrhynchus cristatus).
The presence of Vibrio isolates was investigated in cloacal swabs from the Galápagos marine iguana (Amblyrhyncus cristatus). Such unique iguana is endemic to the Galápagos Archipelago, it is listed as vulnerable in the IUCN Red List (2009), and is strictly protected by CITES and Ecuador laws. Our results revealed an uneven isolation frequency of vibrios from animals living in different settings...
متن کاملCharacterization of a Nonclassical Class I MHC Gene in a Reptile, the Galápagos Marine Iguana (Amblyrhynchus cristatus)
Squamates are a diverse order of vertebrates, representing more than 7,000 species. Yet, descriptions of full-length major histocompatibility complex (MHC) genes in this group are nearly absent from the literature, while the number of MHC studies continues to rise in other vertebrate taxa. The lack of basic information about MHC organization in squamates inhibits investigation into the relation...
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ژورنال
عنوان ژورنال: Behavioral Ecology and Sociobiology
سال: 1986
ISSN: 0340-5443,1432-0762
DOI: 10.1007/bf00300002