Table 3 Digestion time of some hydroids estimated in experimental conditions

Ectopleura larynx (Ellis & Solander, 1786)

Cumbrae

(SW Scotland)

15 °C

Small

2–3

Gili et al. 1996

Large

5

Ectopleura crocea (Agassiz, 1862)

Mar del Plata

4–5

Obelia dichotoma (Linnaeus, 1758)

Arctic waters

6 °C

A single diatom

20

Orejas et al. 2013

Hydractinia echinata (Fleming, 1828)

Knähaken Reef

(Øresund, NE Atlantic)

4 °C

40

Chistensen 1967

16 °C

5

Silicularia rosea Meyen, 1834

King George Island (Antarctica)

0–2 °C

Diatoms

12

Gili et al. 1996

Campanularia everta (Clark, 1876)

Medes Islands (NW Mediterranean)

18 °C

2

Coma et al. 1995

Clava multicornis (Forsskål, 1775)

Helgoland (North Sea)

12 °C

(32‰ S)

Artemia larvae

8

Kinne and Paffenhöfer 1965

17 °C

(32‰ S)

Artemia larvae

6

22 °C

(32‰ S)

Artemia larvae

4

Garveia franciscana (Torrey, 1902)

Russia

23–26 °C

3–4

Simkina 1980

Eudendrium racemosum (Cavolini, 1785)

Medes Islands (NW Mediterranean)

18 °C

5

Barangé and Gili 1988