186
winter, indicating low energy reserves during that season (Beltran-Lugo et al. 2006).
Seasonal changes in proximate and fatty acid composition have also been reported
for Flexopecten glaber from Ionian Sea (Prato et al. 2019). Protein and lipid contents of Flexopecten glaber showed were the highest during spring-summer and the
lowest in the autumn-winter months. This has been reported to result from the accumulation of substitutes to be used during gamet maturation or from further muscle
growth. The proximate compositions of some scallop species reported by some
researchers are shown in Table 3.6.
In terms of nutrients, gonads of scallops are richer than muscles. It has been
reported that the commercial scallop (Pecten fumatus) is a better source of long
chain n-3 PUFA than muscle (Su and Dinh 2003) (Table 3.7). In the gonads of
Flexopecten glaber, higher protein, fat, ash (Berik and Çankiriligil 2013) EPA and
DHA contents (Telahiguea et al. 2010; Prato et al. 2018) were determined than
those of muscles. On contrary, in a study investigating the composition of fatty acids
in different body parts (adductor muscle, digestive gland, gonad, gill and mantle) of
scallop (Argopecten purpulatus), EPA and DHA levels were highest in adductor
muscle compared to other organs (Caers et al. 1999).
The reproductive cycles of the scallops also affect their nutrient storage levels.
Gametogenesis requires energy, and there are different ways of obtaining energy
among species. Some species store energy in different organs and tissues through
feeding before gametogenesis. The onset of the oocyte development phase depends
on the accumulation of nutrient reserves and transfer from digestive gland to gonads.
Table 3.6 Proximate composition of scallop adductor muscle (g/100 g)
Species
Moisture Protein Fat
Ash
Carbohydrate Reference
Pecten maximus
74.6–78.2 18.0–
20.0
0.4–
1.3
1.4–
1.5
2.7–6.8
Manthey-Karl et al.
(2015)
Argopecten
irradians
74.15–
83.6
13.4–
21.5
0.2–
0.9
0.2–
8.7
0.1–3.8
Webb et al. (1969)
79.8
15.9
0.6
1.23 –
Silva and Chamul
(2000)
Argopecten gibbus 76.1–81.8 13.3–
17.5
0.2–
1.1
1.2–
1.8
0.3–3.7
Webb et al. (1969)
Nodipecten
subnodosus
75.1
17.8
0.11 1.4
7.08
Jiménez-Ruiz et al.
(2012)
72.5–80.7 15.1–
17.3
0.3–
0.6
1.3–
1.5
1.8–10.5
Beltran-Lugo et al.
(2006)
Flexopecten
glaber
82.1–84.8 8.2–11.9 0.7–
1.2
2.2–
2.8
1.2–3.3
Prato et al. (2019)
79.3
12.39
1.9
1.30 –
Berik and Çankiriligil
(2013)
79.3–82.8 12.0–
13.7
1.1–
1.9
1.3–
2.0
1.07–5.06
Berik et al. (2017)
Pecten irridans
80.70
15.4
0.50 1.4
1.70
Silva and Chamul
(2000)
3 Molluscan Shellfish
winter, indicating low energy reserves during that season (Beltran-Lugo et al. 2006).
Seasonal changes in proximate and fatty acid composition have also been reported
for Flexopecten glaber from Ionian Sea (Prato et al. 2019). Protein and lipid contents of Flexopecten glaber showed were the highest during spring-summer and the
lowest in the autumn-winter months. This has been reported to result from the accumulation of substitutes to be used during gamet maturation or from further muscle
growth. The proximate compositions of some scallop species reported by some
researchers are shown in Table 3.6.
In terms of nutrients, gonads of scallops are richer than muscles. It has been
reported that the commercial scallop (Pecten fumatus) is a better source of long
chain n-3 PUFA than muscle (Su and Dinh 2003) (Table 3.7). In the gonads of
Flexopecten glaber, higher protein, fat, ash (Berik and Çankiriligil 2013) EPA and
DHA contents (Telahiguea et al. 2010; Prato et al. 2018) were determined than
those of muscles. On contrary, in a study investigating the composition of fatty acids
in different body parts (adductor muscle, digestive gland, gonad, gill and mantle) of
scallop (Argopecten purpulatus), EPA and DHA levels were highest in adductor
muscle compared to other organs (Caers et al. 1999).
The reproductive cycles of the scallops also affect their nutrient storage levels.
Gametogenesis requires energy, and there are different ways of obtaining energy
among species. Some species store energy in different organs and tissues through
feeding before gametogenesis. The onset of the oocyte development phase depends
on the accumulation of nutrient reserves and transfer from digestive gland to gonads.
Table 3.6 Proximate composition of scallop adductor muscle (g/100 g)
Species
Moisture Protein Fat
Ash
Carbohydrate Reference
Pecten maximus
74.6–78.2 18.0–
20.0
0.4–
1.3
1.4–
1.5
2.7–6.8
Manthey-Karl et al.
(2015)
Argopecten
irradians
74.15–
83.6
13.4–
21.5
0.2–
0.9
0.2–
8.7
0.1–3.8
Webb et al. (1969)
79.8
15.9
0.6
1.23 –
Silva and Chamul
(2000)
Argopecten gibbus 76.1–81.8 13.3–
17.5
0.2–
1.1
1.2–
1.8
0.3–3.7
Webb et al. (1969)
Nodipecten
subnodosus
75.1
17.8
0.11 1.4
7.08
Jiménez-Ruiz et al.
(2012)
72.5–80.7 15.1–
17.3
0.3–
0.6
1.3–
1.5
1.8–10.5
Beltran-Lugo et al.
(2006)
Flexopecten
glaber
82.1–84.8 8.2–11.9 0.7–
1.2
2.2–
2.8
1.2–3.3
Prato et al. (2019)
79.3
12.39
1.9
1.30 –
Berik and Çankiriligil
(2013)
79.3–82.8 12.0–
13.7
1.1–
1.9
1.3–
2.0
1.07–5.06
Berik et al. (2017)
Pecten irridans
80.70
15.4
0.50 1.4
1.70
Silva and Chamul
(2000)
3 Molluscan Shellfish