Scientists Finally Figured Out What Baby Lobsters Want for Dinner And It’s Surprisingly Important

Did you know a baby lobster starts life floating through the ocean, smaller than your pinky nail and completely at the mercy of whatever food happens to drift past?

Scientists at the University of Maine just figured out that these tiny lobsters aren’t eating randomly.

They have a favorite.

And that preference could tell us something important about the future of one of New England’s most famous animals.

Meet the Baby Lobster’s Favorite Snack

Researchers studying American lobster larvae discovered that they actively seek out a tiny zooplankton called Calanus finmarchicus.

Think microscopic lobster superfood.

Scientists developed a new DNA probe that allowed them to identify what wild lobster larvae had actually eaten. Around 30% of the young lobsters tested contained Calanus DNA, even though the plankton made up only a small percentage of the food available around them.

In other words, baby lobsters weren’t just bumping into it.

They appeared to be choosing it. 

Why This Tiny Plankton Matters

Calanus is loaded with energy-rich fats, making it a particularly valuable meal for a lobster going through one of the most vulnerable periods of its life.

Before lobsters become the bottom-walking animals we’re familiar with, their larvae spend weeks drifting through the water column.

During that period, getting enough high-quality food can make the difference between surviving long enough to reach the seafloor and never making it there at all.

That’s why researchers are paying attention to another trend.

The amount of Calanus available in parts of the Gulf of Maine has been declining. 

A Tiny Clue to a Much Bigger Question

The Gulf of Maine is changing rapidly, and scientists have been trying to understand how those changes could affect lobster populations over the long term.

If baby lobsters depend heavily on one particularly nutritious plankton species, then changes at the very bottom of the food web could eventually ripple all the way up.

Less Calanus could mean young lobsters are forced to eat less nutritious alternatives.

Researchers still have plenty to learn, but now they know one of the foods worth watching.

Why It Matters

Ocean food webs are full of connections that are almost impossible to see from the surface.

A lobster fishery worth hundreds of millions of dollars can ultimately depend, in part, on something so tiny you’d probably never notice it floating past you.

That’s what makes this discovery so interesting.

Sometimes understanding one of the ocean’s most recognizable animals starts with figuring out what it ate for lunch when it was microscopic.

Tiny plankton. Tiny lobsters.

Potentially very big consequences.

Sources: eurekalert.org