Larval stages of the American lobster (Homarus americanus). Photo by Jesica Waller
Lobsters hatch from eggs and develop through these four larval stages before settling on the sea floor.
Background:
The Maine Department of Marine Resources (DMR) began larval lobster surveys in the Midcoast region in 2018. This survey was implemented in collaboration with Dr. Eric Annis (Hood College) after a preliminary survey in 2017. This larval survey provides a point of comparison to historical work done in this area, and provides new biological datasets focused on this important lobster life stage.
Survey Objectives:
- Evaluate the abundance of larval lobsters in the Midcoast region (Zone E)
- Document the seasonal occurrence of larvae each year
For information about DMR’s survey design, results and related research efforts please contact Heather Glon.
A neuston net deployed during the 2019 DMR larval surveys. Photo by Jesica Waller
Neuston nets are used to sample lobster larvae and other organisms found at the surface.
Map of Survey Sites
2021 Expanded Gulf of Maine/Georges Bank Larval Survey Project
Because of the lack of information on large-scale larval distribution, in 2021 an industry-led collaboration with government and academic scientists, including DMR staff, conducted a season-long survey at sites spanning approximately 186 miles of coastline. The survey established seasonal abundance patterns of larvae and their prey in the Gulf of Maine. A report on the study can be found here.