Do Ants Have Teeth?

Ants are fantastic little creatures, and we often stumble upon them crawling around us. But have you ever thought, do ants have teeth in their mouths? The answer may come as a surprise! In this article, we will explore the ant’s mouth and see whether they have any teeth.

What Are Ant Mouths Like?

The mouth of the ant is so intricate and entirely specialized to fit the insect’s lifestyle. Unlike humans, who have teeth for biting and chewing, ants’ mouths consist of several parts that play different roles in helping them eat well.

The Ant's Mouthparts

The main parts of an ant’s mouth include:

• Mandibles: These are the formidable pair of mandibles commonly used for biting, cutting, and when carrying food or items. They are the only means for the ants to cut the food into smaller pieces.

• Maxillae: These are the secondary jaw-like structures that aid in holding and maneuvering food.

• Labium: This is the lower lip-like part that holds the food and moves it forward into the mouth.

• Hypopharynx: It is a forked structure that functions similarly to the human tongue, helping ants ingest liquids.

Are There Any Teeth in the Ant’s Mouth?

A Bull Ant’s Head
A Bull Ant’s Head Showing Its Mandibles, Credit; Wikimedia/fir0002

Ants, as a species, do not have teeth precisely in the same manner as humans do. Their mandibles, their closest teeth structures, are made of hardened chitinous material (similar to our fingernails). The ants’ jaws are powerful and sharp enough to bite, cut, and rip off most materials.

The power of an ant’s mandibles varies according to the species itself. Some ants, for example, leafcutter ants, with their powerful mandibles, can effortlessly cut through leaves with their powerful jaws. Other ants, such as fire ants, have this defence reaction that allows them to bite with their sharp mandibles and deliver a sting-like pain.

Ant Mandible Adaptations

Mandibles of the ant species have developed into different shapes that correspond to these ants’ distinct tasks and lifestyles. Worker ants often have saw-like mandibles that are jagged or toothed to enable them to hold their food and objects in place. The soldier ants’ mandibles may be bigger and stronger to make them capable of effectively defending the colony. Some ants are gifted enough with mandibular agility to open their mandibles wide enough to capture and snatch their prey several times bigger than their size.

In addition, ants do not use their mouths for just eating. Their mandibles are the primary tools for carrying things, digging tunnels, and fighting off intruders in their colony.

Measuring Ant Mouth Power

Leaf Cutter Ants Carrying a Leaf
Leaf Cutter Ants Carrying a Leaf, Credit; Wikimedia/Pjt56

The power of the ant’s mandibles is impressive. A typical ant’s mandibles can have an average length of 0.14 inches (3.75 mm). However, some species can inflict a bite force up to 970 millinewtons which is about 20 times their body weight! Leafcutter ants are a marvellous example of strength, capable of carrying leaf fragments weighing up to 50 times their body mass just by using their mandibles.

Though ants might not have teeth that we recognize, their powerful mandibles and unified mouth parts are excellently designed for their distinct existence. Their mouths are versatile and appear in multiple forms as they bite and cut, and they also carry their loads and defend their community. So, next time you spot an ant, remember the secrets in its tiny mouth!

References

Richter, A., & Economo, E. P. (2023, October 16). The feeding apparatus of ants: an overview of structure and function. Philosophical Transactions of the Royal Society B: Biological Sciences, 378(1891). https://doi.org/10.1098/rstb.2022.0556

LibGuides: Leafcutter Ant (Atta cephalotes) Fact Sheet: Diet & Feeding. (n.d.). https://ielc.libguides.com/sdzg/factsheets/leafcutter-ant/diet

Fire Ant Bites. (n.d.). AMERICAN OSTEOPATHIC COLLEGE OF DERMATOLOGY. Retrieved April 14, 2024, from https://www.aocd.org/page/FireAntBites

2001, April 3). Mandible movements in ants. antwiki.org. Retrieved April 14, 2024, from https://antwiki.org/wiki/images/4/40/Paul%2C_J._2001._Mandible_movements_in_ants_%2810.1016%40S1095-6433%2801%2900458-5%29.pdf

Zhang, W., Li, M., Zheng, G., Guan, Z., Wu, J., & Wu, Z. (2020, January 1). Multifunctional mandibles of ants: Variation in gripping behavior facilitated by specific microstructures and kinematics. Journal of Insect Physiology. https://doi.org/10.1016/j.jinsphys.2019.103993

Europe PMC. (n.d.). https://europepmc.org/article/ppr/ppr552692

Leafcutter ant | London Zoo. (n.d.). London Zoo. https://www.londonzoo.org/whats-here/animals/leafcutter-ant

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