Species composition and distributions of mesopelagic fishes over the slope of the north-central Gulf of Mexico

Ross, Steve W.; Quattrini, Andrea M.; Roa‐Varón, Adela; McClain, Jennifer P.

doi:10.1016/j.dsr2.2010.05.008

Cited by 50 publications

(53 citation statements)

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“…Both values were similar to those reported for the contribution of the top seven species off Hawaii (75.5%; Clarke, 1973) and eastern GOM (74.7%; Gartner et al, 1987), and of the top six species off north-central GOM (75.1%; Ross et al, 2010). Diaphus is the most species among myctophid genera (60 species; Nafpaktitis et al, 1977) and 19 species are reported for Brazil (Santos & Figueiredo, 2008).…”

Section: Discussionsupporting

confidence: 74%

“…Regarding the four genera exclusive within each area, broad or tropical genera (Centrobranchus, Diogenichthys, Lampadena, Notolychnus) occur between 11-22ºS, while coldwater genera associated with the STC (Electrona, Gymnoscopelus, Lampichthys, Scopelopsis) occur between 22-34ºS. The diversity within each area (11-22ºS: 39 species, 16 genera; 22-34ºS: 41 species, 16 genera) is comparable to that reported for Hawaii (47 species, 18 genera; Clarke, 1973), eastern Gulf of Mexico, GOM (49 species, 17 genera; Gartner et al, 1987) and north-central GOM (38 species, 17 genera; Ross et al, 2010). Collectively, Brazilian waters have a high diversity of myctophids (79 species, 23 genera: Menezes et al, 2003) comparable to that registered in the North Atlantic (82 species, 20 genera: Nafpaktitis et al, 1977).…”

Section: Discussionsupporting

confidence: 64%

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Lanternfish (Myctophidae) from eastern Brazil, southwest Atlantic Ocean

Braga¹,

Costa²,

Martins³

et al. 2014

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ABSTRACT. Twenty-nine species from 11 genera of Myctophidae were taken in daytime midwater and bottom trawl hauls off eastern Brazil (11 o -22 o S). Trawls were performed aboard the French R/V Thalassa to depths from 19 to 2271 m, including samples from shelf, slope and in the vicinity of oceanic banks and seamounts. Diaphus garmani was the most abundant species, accounting for 84% of all identified individuals and with four other species (D. dumerilii, D. brachycephalus, D. perspicillatus and Myctophum obtusirostre) accounted for >95% of all myctophids caught. Regarding longitudinal distribution patterns, 16 species are broadly tropical, seven tropical, three subtropical, two temperate and one amphi-Atlantic. For the most abundant and frequent species, highest abundances were associated mainly with cold waters, either South Atlantic Central Water or Antarctic Intermediate Water. Non-metric multidimensional scaling based on species presence-absence in the samples and oceanographic conditions was used to identify spatial distribution of myctophid assemblages. Three assemblages were identified in the studied area: north of Abrolhos Bank, south of Abrolhos Bank, and seamounts. Keywords: Myctophidae, fish assemblages, seamounts, southwest Atlantic.Peces linterna (Myctophidae) de la costa oriental de Brasil, Atlántico suroeste RESUMEN. Veintenueve especies de 11 géneros pertenecientes a la familia Myctophidae fueron recolectados mediante faenas diurnas de arrastre de fondo y arrastre de mediagua en la costa oriental brasileña (11 o -22 o S). Las faenas fueron realizadas con el buque oceanográfico Thalassa entre 19-2271 m de profundidad, cubriendo las regiones de la plataforma continental, talud, bancos oceánicos y montes submarinos. Diaphus garmani fue la especie más abundante (84%) y en conjunto con otras cuatro especies (D. dumerilii, D. brachycephalus, D. perspicillatus, Myctophum obtusirostre) representaron más del >95% de los mictófidos capturados. De acuerdo a los patrones de distribución longitudinal, 16 especies son de distribución tropical, siete tropical, tres son subtropicales, dos de zonas templadas y una anfi-Atlántica. Para las especies más abundantes y frecuentes, sus mayores abundancias estuvieron asociadas principalmente con aguas frías, especificamente con el Agua Central del Atlántico Sur y con el Agua Intermedia Antártica. Para definir la distribución espacial de las asociaciones de mictófidos basadas en la presencia y ausencia de las especies y su relación con las condiciones oceanográficas imperantes, se aplicó el análisis de ordenación MDS. Los resultados obtenidos indican la presencia de tres ensambles en el área de estudio: norte del Banco Abrolhos, sur del Banco Abrolhos y montes submarinos.

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Section: Discussionsupporting

confidence: 74%

Section: Discussionsupporting

confidence: 64%

Lanternfish (Myctophidae) from eastern Brazil, southwest Atlantic Ocean

Braga¹,

Costa²,

Martins³

et al. 2014

lajar

View full text Add to dashboard Cite

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“…Our sample sizes were also relatively small for most species examined (only Polypinus clarus and Polymetme corythaeola had n > 50); therefore, we elected to pool parasitological data for species across the nGOM rather than comparing infections by locations. Ross et al (2010) found a homogenous mesopelagic fish assemblage across the nGOM that would support our consideration. However, based on diet data for some sternoptychid species in the eGOM, the species composition of available prey at lower taxonomic levels spatially varies slightly (e.g., Hopkins and Baird 1985).…”

Section: Hostsupporting

confidence: 64%

Endohelminth parasites of some midwater and benthopelagic stomiiform fishes from the northern Gulf of Mexico

Andres

Peterson

Overstreet

2016

GCR

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Mesopelagic fishes represent significant ecological links between mesozooplankton and the larger pelagic squids, fishes, and marine mammals. As such, these fishes also play a significant role as intermediate or paratenic hosts for parasites that require a crustacean intermediate host and mature in marine mammals or pelagic fishes. We examined a total of 208 individuals representing 5 species of Sternoptychidae and 88 individuals representing 2 species of Phosichthyidae from 20 locations in the northern Gulf of Mexico (nGOM). Six of the 7 species we examined are mesopelagic and one species was benthopelagic. We found the larval stages of Anisakis brevispiculata, Anisakis typica, Hysterothylacium fortalezae (all Nematoda: Ascaridoidea); Bolbosoma sp. (Acanthocephala: Polymorphidae); and Tetraphyllidea (Cestoda) plus an immature specimen of Brachyphallus sp. (Digenea). Molecular sequencing was used to identify the ascaridoids and Bolbosoma sp. and to confirm the identification of 3 host sternoptychid species. The mesopelagic fishes hosted Anisakis brevispiculata (that matures in pygmy and dwarf sperm whales) and Hysterothylacium fortalezae (that matures in pelagic fishes, primarily mackerels), whereas the benthopelagic species was parasitized by Anisakis typica (that matures in dolphins). We suggest this pattern of infection indicates a pelagic life-cycle for Anisakis brevispiculata and Hysterothylacium fortalezae and a demersal life-cycle for Anisakis typica. Our study represents the first published sequences from the nGOM for the fishes Argyropelecus aculeatus, Maurolicus weitzmani, and Polyipnus clarus and the first molecular identification of larval ascaridoids from mesopelagic fishes in the nGOM.

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“…This pattern has been described for zooplankton (Enright and Hammer, 1967;Båmstedt, 2003), macrocrustaceans (Frank and Widder, 1996) and mesopelagic fish species (Gartner et al, 1987;Sutton, 2013). The vertical migration of pelagic species has been well documented both globally and within the Gulf of Mexico, the major groups constituting the scattering layers include the Myctophidae, Gonostomatidae, Sternoptychidae, Phosichthyidae, Stomiidae (Hopkins andBaird, 1985a, 1985b;Gartner et al, 1987;Lancraft et al, 1988;Sutton and Hopkins, 1996a;Ross et al, 2010), Crustaceans (Moore, 1950;Heffernan and Hopkins, 1981;Flock and Hopkins,1992), and Cephalopoda (Passarella and Hopkins, 1991).…”

Section: Introductionmentioning

confidence: 95%