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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

•  Benthodesmus elongates Meristics: Dorsal spines + rays:

XLIV – XLVI + 104 – 109

Anal spines + rays:

II + 93 – 102

Pelvic spine + ray

I+1

Pectoral rays:

12

-- Morphology: The body is very elongate and laterally compressed. The pelvic fins are reduced and they are positioned below the origin of the pectoral fin. The fin spines are serrated.

-- Pigmentation: The pigmentation is the same as in Lepidopus caudatus with melanophores occurring along the gut, on the snout and on the top of the head. Especially on the dorsal region of the trunk pigmentation develops. When the dorsal rays form out, the pigments start to spread backwards to the caudal region.

-- Remark: Identification was done by family features and by meristics characters. The head was small with a protruding tooth on the tip of lower jaw. In the studied specimen the first dorsal spine was slightly longer and serrated only on the posterior edge.

-- Reference: OLIVAR and FORTUÑO (1991); PARIN (1986b);

-- Reference material: 1 specimen; 03/02: S16 (P73363);

-- Distribution: The only specimen was found in late winter during the day at an epipelagic station southeast of Fuerteventura at a depth of 185 – 211 m.

•  Lepidopus caudatus Meristics: Dorsal spines + rays:

IX + 90 – 107

Anal spines + rays:

II + 60 – 65

Pelvic spine + rays:

Adults: I + 1 Juveniles: I + 2

Pectoral rays:

12

-- Morphology: The number of myomeres is 113 in specimens of 10 mm in SL and the flexion takes place at a SL of 12 mm at least in Mediterranean species. The body is very elongate with a body depth of about 10 % of NL in preflexion larvae and increases during flexion to about 14 % of SL, but decreases again to about 8 % of SL in larvae longer than 30 mm. The snout is small in early larvae becoming more acute with further development. The gut is very short throughout the whole larvae stages with a length of 1/4 – 1/2 of the SL. The first spine of the dorsal fin is elongated with an appendix, which is variable in length

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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