Vertical distribution of early developmental stages in two coexisting clupeoid species, Sardinella aurita and Engraulis encrasicolus

Patchiness and spatial structure of the early developmental stages of clupeiforms in the NW Mediterranean sea

We analyse the spatial structure of early developmental stages of three ecologically important small pelagic schooling species in the northwestern Mediterranean sea: the anchovy Engraulis encrasicolus, the round sardinella Sardinella aurita, and the sardine Sardina pilchardus. We used data on egg and larval abundance (arranged by development stage), hydrographic data and potential prey biomass ...

Structure and spectral sensitivity of photoreceptors of two anchovy species: Engraulis japonicus and Engraulis encrasicolus

The morphology, fine structure and spectral sensitivity of retinal photoreceptors of two anchovy species were investigated using light and electron microscopy and microspectrophotometry. Distinct regional specialisation of cones was observed. Long and short (bilobed) cones were observed in the horizontal retinal belt, including the nasal and temporal retinal zones. Only triple cones with two lo...

Fluctuating asymmetry and fitness correlations in two Engraulis encrasicolus populations.

Correlations among several measures of fluctuating asymmetry (FA) and fitness-related variables were assessed in two populations of the European anchovy Engraulis encrasicolus with fast growth (Aegean Sea) and slow growth (Ionian Sea), respectively. FA levels were borderline significantly higher in the Ionian than in the Aegean for some variables. Variation in otolith shape (deviation from popu...

Engraulis encrasicolus (Linnaeus, 1758): technical report about extraction and recognition of the digestive tract contents in early stages of the life cycle

comparison of the amount of debris extruded apically in two rotary techniques: flexmaster and m2

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