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ACBA Mussels

Page history last edited by Mary.Ellsworth 3 months, 1 week ago

AWS Freshwater Mussel Culture at Anacostia Community Boathouse

Project Leader: Kyle Spears

Mussel baskets deployment April 13, 2023 - 4 baskets, 1,000 mussels

First Measuring Session, noon, July 16, 2023

Second Measuring Session, October 2023

Third Measuring Session, January 2023

Data: Measurements for 25% of each basket

Date

4/23

Basket 1		Basket 2		Basket 3		Basket 4
mm	gram	mm	gram	mm	gram	mm	gram

32.4

2.7

32.6

2.8

31.3

2.4

31.6

2.7

Overall basket
Ave length		Ave wt
32.0	mm	2.7	gm

NOTES:_______

No dead mussels

7/16

Basket 1		Basket 2		Basket 3		Basket 4
mm	gram	mm	gram	mm	gram	mm	gram

41.7

6.7

38.0

5.0

43.5

7.9

41.2

7.0

Overall
Ave length		Ave wt
41.1	mm	6.7	gm
3-mos basket growth
9.1	mm	4.0	gm
22.2%		59.8%

No dead mussels.

Dragonfly
nymph and tiny amphipoda
(shrimp) in the baskets

_________________

10/

01/

Ongoing Basket Monitoring - interim checks and observations April - January

How to do a measuring session

The Anacostia's Freshwater Mussels - important for filtering water

From an AWS mussel presentation: The two tanks started out w the same amount of dirty haze. The mussels in the left hand tank have filtered out all the haze in less than an hour's time. An adult mussel can filter 10-20 gal of water a day. This activity is a key strategy in cleaning up the Anacostia River.