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Table 2 Reproductive biology of B. undatum from present and previous studies

From: Nurse egg consumption and intracapsular development in the common whelk Buccinum undatum (Linnaeus 1758)

Study

Location

Development temperature (°C)

Time to hatching (months)

Capsule size (length mm)

No. of eggs per capsule

Egg diameter (μm)

% of eggs that develop

No. of veligers per capsule

No. hatching juveniles per capsule

Length of shell at hatching (mm)

Portmann (1925)

Roscoff, France

5–9

n/a

n/a

50–>2,000

n/a

n/a

av. 30

av. 10

n/a

Hancock (1967)

Burnham on Crouch, UK

n/a

3–4

n/a

≤3,000

n/a

n/a

13–14

n/a

n/a

Fretter and Graham (1985)

n/a

n/a

3–9

6–12

500–3,000

200–300

n/a

av. 30

3–10

1–1.4

Martel et al. (1986a)

Gulf of St Lawrence, Canada

2–3

5–8

n/a

2,700

n/a

1.10

av. 30

av. 30

3

Kideys et al. (1993)

Douglas, Isle of Man

n/a

3–5

n/a

n/a

n/a

n/a

n/a

n/a

n/a

Valentinsson (2002)

Skagerrak, Sweden

4–8

3–4

7–9.5

700–2,300

245–285

0.20–1.20

n/a

2–16

1.9–2.8

Nasution (2003)

Irish Sea, Northern Ireland

8–11

2.5–3

n/a

av. 2,360a

340

0.47–1.65

n/a

n/a

Nearly 2b

Nasution et al. (2010)

Irish Sea, Northern Ireland

10

3

n/a

558–4,196

n/a

0.47–1.65

n/a

n/a

2.1–3.1

Present study

Southampton Water, UK

6

4.5–5

5–10.5

475–2,639

200–260

1.01

av. 9–11

av. 9

1.70–3.45

Author, personal observations

Breidafjordur, Iceland

Approx. 3

n/a

7–10

804–1,441

n/a

1.48

av. 17

n/a

n/a

  1. n/a not available in study, av. average, no. number
  2. aRange stated in journal was not possible
  3. bNo accurate value was stated in publication