LECTURE 2

Question 1

What are some current problems of oyster habitat destruction?

Answer 1

over fishing
pollution
disease
poor food supply

Question 2

what is an oyster?

Answer 2

bivalve Mollusk

Question 3

member of the family?

Answer 3

ostreidae

Question 4

phylum

Answer 4

mollusca

Question 5

latin name?

Answer 5

Crassostrea virginica

Question 6

which valve is cemented at the bottom?

Answer 6

left valve

Question 7

oyster optimum range of salinity ?

Answer 7

10-20

Question 8

<5 salinity?

Answer 8

feeding impaired and gametogenesis

Question 9

<2 ?

Answer 9

lethal

Question 10

<10?

Answer 10

limited larvae growith

Question 11

> 20?

Answer 11

predators like the blue crab

and diseases and parasites

Question 12

when an oyster is larger that means its ?

Answer 12

female

Question 13

it is cheaper to be__than __ when smaller because?

Answer 13

male than female

bc eggs are expensive because of its nutrients

Question 14

t/f sex reversal is possible?

Answer 14

true

Question 15

where does fertilization occur ?

Answer 15

in the water column

Question 16

How do they know
who is an oyster
gamete?

Answer 16

Gamete
recognition proteins
in sperm head - lysins

Question 17

how long do larvae stay up in the water column for?

Answer 17

2 weeks

Question 18

how do the larvae swim?

Answer 18

with velum

Question 19

how do the larvae take advantage of estuarine circulation?

Answer 19

they will rise with the high tide and and fall with the low tide
they also take advantage of the salinity gradient

Question 20

Oyster feeding?

Answer 20

help of cilia
go through gills, palp, digestive tract
the gills are able to sort out what is bad and what is not

Question 21

Ecosystem Effects of Oysters

and Oyster Reefs

Answer 21

Feeding – clearing of water column
Removal of nitrogen from water column
Oyster reefs provide habitat for other
species – sessile invertebrates, crabs,
fishes