mesopelagic


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mes·o·pe·lag·ic

 (mĕz′ə-pə-lăj′ĭk, mĕs′-)
adj.
Relating to or inhabiting the layer of the water column in the open ocean that lies between the epipelagic and bathypelagic layers at depths of about 200 to 1,000 meters (656-3,280 feet).

mesopelagic

(ˌmɛsəʊpəˈlædʒɪk)
adj
(Biology) of, relating to, or inhabiting the intermediate depths of the ocean between approximately 100 and 1000 metres
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References in periodicals archive ?
In situ video observations of two manefishes (Perciformes: Caristiidae) in the mesopelagic zone of the northern Gulf of Mexico.
Larvae were separated into three ontogenetic groups according to the notochord flexion state (preflexion, flexion and postflexion) and classified as coastal or oceanic (coastal, epipelagic, mesopelagic, epi-mesopelagic and demersal) according to the adult fish habitat following the classification given by Moser & Ahlstrom (1996).
By contrast, three dimensions will be required to describe the extended vertical habitat of the species that we classified as mesopelagic I (blue sharks, shortfin makos) and mesopelagic II (bigeye threshers).
Chaetopterus pugaporcinus is neutrally buoyant, and when encountered in situ, each specimen was fully inflated, floating in the lower mesopelagic portion of the water column.
Without this exception, the rest of the IMA fish larvae species were of neritic affinity (different to fish larvae typically observed at offshore regions of the mouth of the Gulf of California) numerically dominated by the tropical mesopelagic, like Benthosema panamense (Aceves-Medina et al., 2004; Gonzalez-Armas et al., 2008; Leon-Chavez et al, 2010).
Indicators of ecosystem status often consist of species with common properties such as foraging guild membership, spatial distribution, ecotype, or some combination of these (e.g., small planktivorous fish, migratory mesopelagic fish, all sharks) (Fulton et al., 2005).
Many animals living at mesopelagic depths (200-1000 m) have eyes efficient at capturing both the dim downwelling light and luminescence from other organisms (reviewed in Warrant and Locket, 2004).
Overall, pelagic species such as mackerel (11.01 ton [km.sup.-2]), jack mackerel (15.4 ton [km.sup.-2]), sardine (26.9 ton [km.sup.-2]), anchovy (39.1 ton [km.sup.-2]), and mesopelagic fish (67.3 ton [km.sup.-2]) dominated the system (Table 2), representing 26% of [B.sub.T], while the combined biomass of demersal fish represented 0.1% of Bt.
Sebastes flavidus, shelf rockfish feeding on mesopelagic fauna, with consideration of the ecological implications.
Indeed, this solution is nearly ubiquitous in nontransparent mesopelagic species, particularly in crustaceans, fish, and squid (Young and Roper, 1976; Herring, 1977, 1985; Widder, 1999).
The ichthyoplanktonic taxocenosis found off Punta Angamos (Peninsula de Mejillones) showed a mixture of coastal and oceanic species (epipelagic, epimesopelagic and mesopelagic).
Sickle pomfret and escolar are mesopelagic species whose predators that include deep-foraging bigeye and albacore tunas, swordfish, and large sharks (Ward and Myers, 2005b).