Marine Iguana

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Marine Iguana

 

(Amblyrhynchus cristatus) a reptile of the family Iguanidae. The body length of the male measures up to 140 cm; the females are much smaller. The head is rounded, and the trunk massive. The tail is laterally compressed and resembles an oar. The digits are joined by a short web. There is a crest of elongated, sharp scales along the back and tail. The color of the male is usually dark brown, gray, or brown-red on top and yellowish brown below; the females are lighter. The marine iguana, along with the Galapagos land iguana, the great land tortoise, and some other reptiles, is indigenous to the Galapagos Islands. It inhabits the rocky (basaltic) shores close to the tide line. The reptile spends a considerable time in the water, since it swims easily and rapidly. Its food consists of marine algae. The marine iguana is the only extant lizard that obtains its food in the sea. The female deposits one to three eggs in a burrow. Polygamy is characteristic of marine iguanas. During the reproductive period, which is in January, the animals settle in convenient areas of the shore in small groups of two to ten adult females, a number of young individuals, and one male, who does not allow the intrusion of other males into his area.

I. S. DAREVSKII

References in periodicals archive ?
Aufwand, Kosten und Nutzen der Fortpflanzung bei Meerechsen, Amblyrhynchus cristatus Bell 1825.
Competition of marine iguana females Amblyrhynchus cristatus for egg-laying sites.
We evaluate 16 Eigenmannia virescens with sizes ranging from 12 to 19 cm standard length, 15 Iheringichthys labrosus ranging from 5 to 14 cm standard length, and 13 Leporinus amblyrhynchus ranging from 14 to 20 cm standard length.
Leporinus amblyrhynchus had the greatest mean dispersion of all (Table 5).
amblyrhynchus, especially, showed significantly higher dispersion values than the other fish species and consequently added one taxa absent from the sediment and from the other fish species studied (Philopotamidae).
Chironomidae as a food resource for Leporinus amblyrhynchus (Teleostei: Characiformes) and Pimelodus maculatus (Teleostei: Siluriformes) in a Brazilian reservoir.
Field energetics and food consumption of the Galapagos marine iguana, Amblyrhynchus cristatus.
The Galapagoan lizards of the genus Tropidurus with notes on the iguanas of the genera Conolophus and Amblyrhynchus.
ruber, Coryphaena hippurus, Chaetodipterus faber, Decapterus macarellus, Elagatis bipinnulata, Elops saurus, Hemicaranx amblyrhynchus, Istiophorus albicans, Lobote surinamensis, Pomatomus saltatrix, Rachycentron canadum, Scomberomorus brasiliensis, Scomberomorus cavalla, Scomberomorus regalis, Selar crumenophthalmus, Selene setapinnis, Selene vomer, Sphyraena barracuda, Sphyraena guachancho, Tarpon atlanticus, Trachinotus falcatus, Trachinotus goodei, Trachurus lathami, Tylosurus spp.
Morfologia externa del desarrollo larvario de Hemicaranx amblyrhynchus (Pisces: Carangidae) del Sur del Golfo de Mexico.