Related Experiment Video
Updated: Jul 12, 2026
05:19
Isolation and Identification of Bacterial Strains from Skin of Terrestrial Amphibians
Published on: June 17, 2025
Transfer of fermentative microbes between generations in a herbivorous lizard
Science (New York, N.Y.)
|April 30, 1982
Summary
Young iguanas need direct contact with adults to acquire essential gut microbes for digestion. This microbial transfer allows captive hatchlings to grow as rapidly as their wild counterparts.
Area of Science:
- Herpetology
- Microbiology
- Animal Ecology
Background:
- Iguana iguana are herbivorous, relying on hindgut microbial fermentation for plant cell wall breakdown.
- Captive-reared iguanas exhibit slower growth and less complex gut microbial populations compared to wild iguanas.
Purpose of the Study:
- To investigate the mechanism of microbial gut flora acquisition in juvenile Iguana iguana.
- To determine the role of social contact in establishing a functional digestive microbiome in young iguanas.
Main Methods:
- Comparison of growth rates and gut microbial diversity between captive and wild juvenile iguanas.
- Experimental feeding of fecal material from adult iguanas to captive hatchlings.
- Observational study of social interactions between juvenile and adult iguanas in the field.
Main Results:
- Captive hatchlings fed adult iguana feces successfully acquired complex microflora.
- These supplemented captive hatchlings exhibited growth rates comparable to wild hatchlings.
- Wild hatchlings naturally acquire complex microflora through early-life association with adults.
Conclusions:
- Direct fecal-oral contact with adults is crucial for neonatal Iguana iguana to acquire essential fermentative microflora.
- This microbial acquisition is vital for achieving optimal growth rates in juvenile iguanas.
- Social behavior in the wild facilitates the transfer of necessary gut symbionts.
Related Concept Videos
02:18Types of Genetic Transfer Between Organisms
Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.
02:18Types of Genetic Transfer Between Organisms
Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.
01:27Microbes in the Production of Fermented Foods
Lactic acid bacteria (LAB) and molds are instrumental in fermenting plant-based foods to enhance preservation and ensure year-round availability. These microbial processes convert plant carbohydrates into organic acids and other metabolites that inhibit spoilage organisms and contribute to the sensory qualities of the final product.In sauerkraut production, cabbage goes through a microbial succession that starts with cocci such as Leuconostoc mesenteroides. These microbes begin fermentation by...
01:24Evolution of New Traits in Microbes
Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
01:26Evolutionary Processes in Microbes
Microbial evolution occurs rapidly due to short generation times and a variety of genetic processes, including horizontal gene transfer, mutation, recombination, and genetic drift. These mechanisms collectively enable microbes to adapt swiftly to changing environments.Horizontal gene transfer (HGT) allows genes to move between different species and occurs through three main mechanisms: conjugation, transformation, and transduction. Conjugation involves direct cell-to-cell contact for DNA...
01:23Microbial Fermentation
Fermentation is a crucial anaerobic metabolic process that enables microbes to derive energy from sugar without relying on oxygen or an electron transport chain. This process is fundamental to various biological and industrial applications and is classified based on the metabolic products generated.Role of Pyruvate in FermentationPyruvate and its derivatives serve as key electron acceptors in fermentative pathways. The oxidation of NADH to regenerate NAD+ is essential for the continuation of...