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Amblyrhynchus - Species in
Iguanidae - - Classification -
- Iguanidae
- Squamata
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Amblyrhynchus cristatus Bell, 1825
Marine iguana| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Amblyrhynchus cristatus AquaMaps Data sources: GBIF OBIS |
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS
Reptilia | Squamata | Iguanidae
Environment: milieu / climate zone / depth range / distribution range Ecology
Reef-associated; depth range 0 - 12 m (Ref. 2658). Tropical; 10°C - 36°C (Ref. 2620); 1°N - 2°S, 92°W - 89°W
Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions
Southeast Pacific: Galapagos Islands. IUCN: Amblyrhynchus cristatus albemarlensis, Vu B2ab(iii)c(iv); Amblyrhynchus cristatus hassi, Vu B2ac(iv); Amblyrhynchus cristatus mertensi, En A2ce; C2b; Amblyrhynchus cristatus nanus, En A2b; Amblyrhynchus cristatus sielmanni, Vu B2ac(iv); and Amblyrhynchus cristatus venustissimus, Vu B2ac(iv) (Ref. 89710).
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm Max length : 130 cm TL male/unsexed; (Ref. 2621); 60 cm TL (female); max. published weight: 1.5 kg (Ref. 2621)
Weight ranges from 500 to 1,500 g (Ref. 2621). Ectothermic (Ref. 2648). Prefers temperatures between 35° to 37°C (Ref. 2659). Lives in colonies where shallow reefs occur with extensive intertidal zone and rocky coastline with 2 to 5 m above sea level. Lays eggs in softer substrates (Ref. 2623). Sleeps on the coastline or up on mangrove trees. Exhibits subtidal and intertidal feeding (Ref. 2650). Naturally dives at depths 1.5 to 5 m for 5 to 10 minutes (Ref. 2656) but can descend to 12 m for about 30 minutes (Ref. 2658).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Exhibits lekking during mating season (Ref. 2652). Nesting season is from January to February. Males defend mating territories for 3 months during annual breeding season. Females lay up to 6 eggs in burrows 30 to 80 cm deep in sand or volcanic ash (Ref. 2661). Embryo development takes place at temperatures from 28° to 30°C (Ref. 2659).
Main reference
References | Coordinator | Collaborators
Roy, K. 2000. (Ref. 2618)
IUCN Red List Status
(Ref. 130435: Version 2024-2)
Vulnerable (VU) (A2abce+4abce); Date assessed: 01 December 2019
CITES status (Ref. 108899)
Appendix II: International trade monitored
CMS (Ref. 116361)
Not Evaluated
Threat to humans
Human uses
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More information
Trophic Ecology
Ecology
Population dynamics
Growth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Distribution
Human Related
Aquaculture profiles
Stamps, coins, misc.
Stamps, coins, misc.
Outreach
Taxonomy
References
Internet sources
BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record
Estimates based on models
Preferred temperature
(Ref. 115969): 23.5 - 24.6, mean 23.7 (based on 16 cells).
Resilience
(Ref. 69278):
High, minimum population doubling time less than 15 months (K=0.74-1.52; tm=5.5).
Price category
(Ref. 80766):
Unknown.