REVIEW OF THE SYSTEMATICS AND ECOLOQY OF OCEANIC SQUIDS
123
squid in the region during some years. At other times these squids are
80 numerous that they are used as fertilizer.
2. Illex coindeti (Verany, 1837)
Loligo coindetii VBrany, 1837
Loligo brogniartii Blainville, 1823
Loligo sugittata (pars) Blainville, 1825
Ommastrephes sagittatus (pars) d'orbigny, 1845
Loligo pillae VBrany, 1851
Todaropsis veranyi Jatta, 1896
Illex illecebrosus coindeti Pfeffer, 1912
? Illex illecebrosus Chun, 1913
?Illex illecebrosus Joubin, 1920
This species has been recorded from Scotland and the North Sea
(Norman, 1890; Grimpe, 1925; Fig. lo), the English Channel (Rees,
1957), the Irish Sea (Chadwick, 1921), the west coast of France (Joubin,
1896a, 1920), Portugal (Girard, 1890a,b; Nobre, 1932), Morocco and
the Canary Islands south t o 26" 3'N, (Chun, 1913; Robson, 1926a),
the west African coast from 9" 14" to 14"s (Desbrosses, 1938; Adam,
1951), the western Mediterranean (V&any, 1851; Jatta, 1896; Morales,
1958; Mangold-Wirz, 1963; etc.); the Adriatic (Kolombatovitsch, 1900;
Pfeffer, 1912; Gamulin-Brida, 1963) and the Red Sea (Adam, 1942a).
Adam (1952) considered that more specimens are needed in order to
find if there is a difference between I . coindeti from the Mediterranean
and West Africa and those from western Europe.
Mangold-Wirz (1963) studied the ecology of the species in the north
west Mediterranean and found that migrations of two groups took
place in each year. I n January a group of sexually advanced squids
lie on the bottom between about 60-150 m and immature squids are
caught on the bottom between 150-400 m. The advanced group move
into shallower water from March until, in about July, they are caught
on the bottom in water of less than 100 m. Then in August this group
migrates back to water of more than 200 m depth. The immature
group follows the more advanced squid inshore where they enter the
littoral zone in August and September and then, they too, migrate
back into deep water. This species has been found on the slope or shelf
at similar depths (40-500 m) in other regions (Jatta, 1896; Joubin,
1896a; Dieuzeide, 1950; Adam, 1952). Morales (1958), however, found
that a t Blanes (which is not far from the area studied by MangoldWirz) the species was fished all the year round from 110-400 m.
Crosnier (1964) noted that off the Cameroun republic this species only
frequents water below the thermocline.
From the state of the adult gonads it appears that the reproductive
123
squid in the region during some years. At other times these squids are
80 numerous that they are used as fertilizer.
2. Illex coindeti (Verany, 1837)
Loligo coindetii VBrany, 1837
Loligo brogniartii Blainville, 1823
Loligo sugittata (pars) Blainville, 1825
Ommastrephes sagittatus (pars) d'orbigny, 1845
Loligo pillae VBrany, 1851
Todaropsis veranyi Jatta, 1896
Illex illecebrosus coindeti Pfeffer, 1912
? Illex illecebrosus Chun, 1913
?Illex illecebrosus Joubin, 1920
This species has been recorded from Scotland and the North Sea
(Norman, 1890; Grimpe, 1925; Fig. lo), the English Channel (Rees,
1957), the Irish Sea (Chadwick, 1921), the west coast of France (Joubin,
1896a, 1920), Portugal (Girard, 1890a,b; Nobre, 1932), Morocco and
the Canary Islands south t o 26" 3'N, (Chun, 1913; Robson, 1926a),
the west African coast from 9" 14" to 14"s (Desbrosses, 1938; Adam,
1951), the western Mediterranean (V&any, 1851; Jatta, 1896; Morales,
1958; Mangold-Wirz, 1963; etc.); the Adriatic (Kolombatovitsch, 1900;
Pfeffer, 1912; Gamulin-Brida, 1963) and the Red Sea (Adam, 1942a).
Adam (1952) considered that more specimens are needed in order to
find if there is a difference between I . coindeti from the Mediterranean
and West Africa and those from western Europe.
Mangold-Wirz (1963) studied the ecology of the species in the north
west Mediterranean and found that migrations of two groups took
place in each year. I n January a group of sexually advanced squids
lie on the bottom between about 60-150 m and immature squids are
caught on the bottom between 150-400 m. The advanced group move
into shallower water from March until, in about July, they are caught
on the bottom in water of less than 100 m. Then in August this group
migrates back to water of more than 200 m depth. The immature
group follows the more advanced squid inshore where they enter the
littoral zone in August and September and then, they too, migrate
back into deep water. This species has been found on the slope or shelf
at similar depths (40-500 m) in other regions (Jatta, 1896; Joubin,
1896a; Dieuzeide, 1950; Adam, 1952). Morales (1958), however, found
that a t Blanes (which is not far from the area studied by MangoldWirz) the species was fished all the year round from 110-400 m.
Crosnier (1964) noted that off the Cameroun republic this species only
frequents water below the thermocline.
From the state of the adult gonads it appears that the reproductive