Iguana delicatissima
The Lesser Antillean iguana (Iguana delicatissima) is a large, arboreal lizard native to the Lesser Antilles, distinguished by its blocky face and lack of a striped tail pattern found in its close relative, the green iguana. This herbivorous species is critically endangered, facing severe threats from habitat destruction, introduced predators, hunting, and hybridization. Efforts to breed them in captivity have faced challenges with egg fertility, though some successes have been achieved.
Key Facts
- ›Distinguished from the green iguana by a blocky face and absence of a striped tail.
- ›Primarily herbivorous, feeding on leaves, flowers, seeds, and fruits of over 100 plant species.
- ›Critically endangered, with populations declining due to habitat loss, introduced predators, and hybridization.
- ›Possesses a large, round scale below each ear, unlike the green iguana.
- ›Males have pink jowls and blue scales around the eyes; females do not.
- ›Captive breeding has been challenging due to low egg fertility rates.
Lesser Antillean Green Iguana, West Indian Iguana
Lesser Antilles, Saint Barth, Anguilla, St. Eustatius, Guadeloupe, Dominica, Martinique
Scrub Woodlands, Rainforests, Mangroves
- Large Arboreal Lizard.
- More Blocky, Shortened Face Than the Green Iguana.
- Lacks the Distinctive Stripe Pattern Along the Tail Seen In Green Iguanas.
- Possesses A Large, Round Scale Below Each Ear.
- Base Color Is Typically Gray With Green Splotching On the Underside.
- Large, Pale, Ivory-Colored Scales On the Head.
- Males Have Pink Jowls and Blue Scales Around the Eyes.
- Males Have Femoral Pores Along Each Inner Thigh.
Leaves, Flowers, Seeds, Fruit, Growing Shoots, Manchineel, Barbados Cherry, Chink Bush
- Arboreal
- Primarily Herbivores.
- Males Exhibit Pheromone Excretion During Breeding Season.
- Considered An Ecosystem Engineer Due To Nest Tunnel Creation.
Dogs, Cats, Mongooses
Habitat Destruction, Introduced Feral Predators, Hunting, Hybridization With Green Iguana, Agriculture and Human Development
About Iguana delicatissima
Lesser Antillean Iguana (Iguana delicatissima)
The Lesser Antillean iguana, scientifically known as Iguana delicatissima, is a significant reptile species native to the Lesser Antilles archipelago. This large, arboreal lizard is characterized by a distinctively blocky facial structure and the absence of the tail stripes that mark its close relative, the green iguana (Iguana iguana). A notable feature distinguishing it from the green iguana is a prominent, round scale situated below each ear.
Habitat and Diet
This species thrives in diverse environments across its range, including scrub woodlands, rainforests, and mangrove ecosystems. Its diet is predominantly herbivorous, consisting of leaves, flowers, seeds, and fruits from over 100 plant species. Interestingly, it is known to consume the toxic manchineel tree and shows seasonal dietary shifts, favoring foliage during drier periods and a mix of leaves and fruits when wetter.
Conservation Status and Threats
The Lesser Antillean iguana is currently listed as Critically Endangered. Its populations have suffered severe declines due to a combination of factors. Habitat destruction, driven by agriculture and human development, has significantly reduced its living space. The introduction of feral predators such as dogs, cats, and mongooses poses a direct threat to individuals. Perhaps the most critical threat is hybridization with the introduced green iguana, a process that dilutes the genetic integrity of the Lesser Antillean iguana and has led to its disappearance from several islands or severe population reductions.
Captive Breeding and Conservation Efforts
Conservation efforts include legal protections against hunting, though enforcement can be challenging. Captive breeding programs have been initiated at various zoological institutions, but have faced considerable difficulties, particularly with the low fertility rates of captive-laid eggs. Despite these challenges, limited successes have been recorded, offering a glimmer of hope for the species' survival. The Lesser Antillean iguana's status has been elevated under the SPAW Protocol, strengthening regional protections against its taking, possession, or disturbance.
Source: Wikipedia ↗
Frequently Asked Questions
What are the main differences between the Lesser Antillean iguana and the green iguana?
The Lesser Antillean iguana has a more blocky, shortened face and lacks the distinctive stripe pattern along its tail that the green iguana possesses. Additionally, the Lesser Antillean iguana has a large, round scale below each ear, which is absent in the green iguana.
What does the Lesser Antillean iguana eat?
These iguanas are primarily herbivores, consuming leaves, flowers, seeds, and fruits from a wide variety of plants, including those toxic to other animals. Their diet shifts seasonally, with more foliage consumed during the dry season and a mix of leaves and fruits during the wet season.
Where can the Lesser Antillean iguana be found?
The Lesser Antillean iguana is naturally found in the Lesser Antilles, inhabiting scrub woodlands, rainforests, and mangroves on islands such as Saint Barth, Anguilla, St. Eustatius, Guadeloupe, Dominica, and Martinique. It has disappeared from several other islands since European settlement.
Why is the Lesser Antillean iguana considered critically endangered?
The species is critically endangered due to severe habitat destruction, the introduction of feral predators like dogs and cats, hunting, and significant hybridization with the introduced green iguana. These factors have led to a drastic decline in their populations.
What are the challenges in breeding Lesser Antillean iguanas in captivity?
Captive breeding of this species has proven difficult, primarily because most eggs laid in captivity tend to be infertile. While some successful hatching events have occurred, achieving consistent reproductive success remains a significant hurdle.
What are the physical characteristics of male Lesser Antillean iguanas?
Male Lesser Antillean iguanas are larger than females and can reach up to 43.4 cm in length with an 80 cm tail. They are characterized by pink jowls and blue scales around their eyes, and they possess femoral pores on their inner thighs that exude pheromones during the breeding season.
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