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3 RESULTS

while the anal fin has one single spine with 7 – 10 rays. The pelvic fins form already in preflexion stage and have one weak spine with 6 – 9 rays, which are long, fragile and pigmented.The origin of the pelvic fin is close anteriorly or posteriorly to the pectoral fin level, but migrates more posteriorly with development. The number of pectoral fin rays varies from 14 – 17. The principal caudal ray number is 10 + 9 and the procurrent spines have a number of 3 – 4. The number of vertebrae ranges from 24 – 31. The pattern of pigmentation varies strongly among species. Prominent are the spots at the posterior end of the dorsal and anal fin, which spread out with development. If a more intense pigmentation appears then it does so on the cranium, peritoneum and on the caudal peduncle.

-- Reference: FAHAY (1983); FRIAS-TORRES (2006a);

•  Melamphaes sp. The myomere counts ranges from 25 – 31 and the dorsal fin ray counts from 10 – 14. At the dorsal margin of the head and the eyes a bulge is formed out. In very early larvae two spots are present at the anlagen of the dorsal and anal fin, which grow with further development to a line along the dorsal and ventral margin, some larvae form a band between these pigmentation areas at the level of dorsal and anal fin in late stages. Additionally pigments appear on the cranium, peritoneum and at the posterior region of the caudal peduncle.

-- Reference: FAHAY (1983); KEENE and TIGHE (1984);

-- Reference material: 2 specimens; 04/99: S14 (P412418); 05/99: S6 (P412419);

-- Distribution: Larvae were only caught in spring southwest of Gran Canaria at a depth of 480 – 694 m in day and epipelagic north of La Gomera and Tenerife at 48 – 66 m depth during the night.

¬ BERYCIFORMES The high number of pelvic and caudal fin rays is prominent for this order. Dorsal, anal and pelvic fin spines develop as well as spinous procurrent caudal fin rays. The body is slender in early larvae, but deepens with development. The pelvic fins with its long pigmented rays form rapidly anterior on body, but move more posteriorly with development. In many families the second or third ray of the dorsal fin is elongate. The development is gradual and direct.

-- Reference: KEENE and TIGHE (1984); RICHARDS, LYCZKOWSKI-SHULTZ and KONIECZENA (2006a); WATSON (1996b);

TRACHICHTHYOIDEI > Diretmidae The early larvae are slender, but getting deeper with development. A short spine develops on the frontal bone above each eye and a longer parietal spine on each side, which is directed backwards. This spination is typical for that family (Figure 51). Further on each side a preopercular spine develops, which is depending on the species postero- or anteroventrally orientated. The ridge of the opercle is not serrated.

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

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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