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SPATIAL AND SEASONAL PATTERNS IN SPECIES COMPOSITION AND OCCURRENCE OF FISH LARVAE IN THE AREA OF THE CANARY ISLANDS, EASTERN CENTRAL ATLANTIC

-- Morphology: The larvae hatch at a size of 1.9 – 2.6 mm and are moderately deep bodied, but deepen more with development. Prominent is the spongy tissue, which develops anteriorly in the dorsal finfold during preflexion stage and persists almost throughout the whole larval period. Spines are lacking on the second infraorbital bone and on the cleithrum.

-- Pigmentation: Pigments are present on the dorsolateral surface of the gut, above the brain, on the lower jaw, along the ventral margin of the caudal peduncle and on the pectoral fin.

-- Reference: HARDY (2006a); WASHINGTON, ESCHMEYER and HOWE (1984); WASHINGTON et al. (1984);

-- Reference material: 2 specimens; 04/99: S5 (P791441); S14 (P791442);

-- Distribution: In spring a juvenile was caught southeast of Fuerteventura at a mesopelagic station at a depth of 382 – 511 m in daytime and a larval specimen was caught south of Gran Canaria in a depth range from 480 – 694 m during the day.

Scorpaeninae •  Scorpaena sp. The suborbital stay is present and may be spinated in some species, but not so in the studied specimens (Figure 55). Also, preopercle spines are present, the first being the longest. The second and third are developed in the entire genus, but the fourth and fifth spine can be absent. Spines are usually present at the posttemporal, preoperculum and at supra- and cleithral too. Further spines are present on the head.The dorsal fin consists of 12 spines and 7 – 10 rays.The anal fin has 3 spines and 5 rays and the pectoral fin ray number ranges from 16 – 21, where some rays may be branched.

-- Reference: HUREAU and LITVINENKO (1986);

-- Reference material: 5 specimens; 11/97: S10 (P791444-445); S16 (P791447); 04/99: S22 (P791443); 11/00: S1 (P791446);

-- Distribution: In autumn some specimens were caught at neritic stations during the night, so northeast of Lanzarote at a depth of 20 – 64 m and west of Gran Canaria at 42 – 66 m depth. Also at one epipelagic station north of Gran Canaria at a depth of 55 – 90 m during the night some larvae were found. Only one specimen caught at a neritic station west of La Gomera in a depth range from 25 – 70 m also during night, but in spring.

Inf. Téc. Inst. Canario Cienc. Mar. n°13

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Spatial and seasonal patterns in species composition of fish larvae in the Canary Islands  

Technical report consisting on a comprehensive annotated larvae taxa list with the most important taxonomic characters of this region

Spatial and seasonal patterns in species composition of fish larvae in the Canary Islands  

Technical report consisting on a comprehensive annotated larvae taxa list with the most important taxonomic characters of this region

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