The Role of Larval Stages in Systematic Investigations of Marine Teleosts: The Myctophidae, A Case Study

Moser, H. G.; Ahlstrom, Elbert H.

doi:10.1007/978-3-642-65852-5_48

Cited by 46 publications

(71 citation statements)

References 9 publications

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“…3 mm BL) were collected in May/June 1990 and another one in February 1991 (4.4 mm BL). They matched the descriptions given by Moser and Ahlstrom (1974); Pertseva-Ostroumova (1974) and Ozawa (1986).…”

Section: Myctophum Asperum Richardson 1845supporting

confidence: 81%

“…Total larvae examined: 253, 3.0-12.5 mm BL. Identification was based on the descriptions of Moser and Ahlstrom (1974); Pertseva-Ostroumova (1974) and Ozawa (1986).…”

Section: Descriptions Of Larvaementioning

confidence: 99%

“…Photophores larger in B. fibulatum. Order of photophore development differs between the two species (see table 1 of Moser and Ahlstrom 1974). Br 2 , Dn and PO 5 appear earlier in B. fibulatum than in B. pterotum, followed by PVO 1 and Op 2 in B. pterotum and PO 1 and AOa 1 in B. fibulatum.…”

Section: Comparative Remarksmentioning

confidence: 99%

“…They were collected during the October 1990 and February 1991 cruises at stations located along the 500 and 2000 m isobaths. Identification of Agulhas larvae was based on the 9.8 mm larva described by Moser and Ahlstrom (1974). …”

Section: Myctophum Nitidulum Garman 1899mentioning

confidence: 99%

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Lanternfish larvae from the Agulhas current (SW Indian Ocean)

1999

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SUMMARY: This paper is presented as a guide to assist in identifying larval stages of lanternfish (family Myctophidae) of the Agulhas Current region. The work is based on the larvae collected during three cruises conducted off the eastern coast of South Africa from 29°S to 34°S in 1990 and 1991. The larval distributions obtained from these surveys are summarised briefly. Generally, only literature citations are given for species of the region whose larvae have been described previously. Descriptions are limited to those species for which complete larval development have not been published previously and to those species not known to spawn in the region, to compare larval features with those from regions where the species is known to spawn (i.e., Benthosema fibulatum, B. pterotum, Hygophum proximum, Lampadena luminosa, Myctophum selenops, Notoscopelus caudispinosus and Triphoturus nigrescens). Also, diagnostic characters and illustrations are presented for species which may be difficult to identify in some developmental stages, particularly the early larval stages (i.e., Benthosema suborbitale, Bolinichthys spp., Ceratoscopelus townsendi, Diogenichthys panurgus, Myctophum phengodes, Lobianchia dofleini, L. gemellarii and Scopelopsis multipunctatus).

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Section: Myctophum Asperum Richardson 1845supporting

confidence: 81%

“…Total larvae examined: 253, 3.0-12.5 mm BL. Identification was based on the descriptions of Moser and Ahlstrom (1974); Pertseva-Ostroumova (1974) and Ozawa (1986).…”

Section: Descriptions Of Larvaementioning

confidence: 99%

Section: Comparative Remarksmentioning

confidence: 99%

Section: Myctophum Nitidulum Garman 1899mentioning

confidence: 99%

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Lanternfish larvae from the Agulhas current (SW Indian Ocean)

1999

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“…In the laboratory, all fish larvae were removed for counting and identified to the lowest taxonomic level using descriptions by Fisher (1958Fisher ( , 1959, Moser & Ahlstrom (1970, 1974, 1996, Balbontín & Garretón (1977), Brownell (1979), and Orellana & Balbontín (1983). 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).…”

Section: Sampling Design and Collection Of Samplesmentioning

confidence: 99%

Fish larvae retention linked to abrupt bathymetry at Mejillones Bay (northern Chile) during coastal upwelling events

Rojas¹,

Landaeta²

2014

lajar

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ABSTRACT. The influence of oceanic circulation and bathymetry on the fish larvae retention inside Mejillones Bay, northern Chile, was examined. Fish larvae were collected during two coastal upwelling events in November 1999 and January 2000. An elevated fish larvae accumulation was found near an oceanic front and a zone of low-speed currents. Three groups of fish larvae were identified: the coastal species (Engraulis ringens and Sardinops sagax), associated with high chlorophyll-a levels; larvae from the families Phosichthyidae (Vinciguerria lucetia) and Myctophidae (Diogenichthys laternatus and Triphoturus oculeus), associated with the thermocline (12°C), and finally, larvae of the families Myctophidae (Diogenichthys atlanticus) and Bathylagidae (Bathylagus nigrigenys), associated with high values of temperature and salinity. The presence of a seamount and submarine canyon inside Mejillones Bay appears to play an important role in the circulation during seasonal upwelling events. We propose a conceptual model of circulation and particles retention into Mejillones Bay. The assumption is that during strong upwelling conditions the flows that move along the canyon emerge in the centre of Mejillones Bay, producing a fish larvae retention zone. Understanding the biophysical interactions responsible to trap and/or concentrate particles is essential to protect these fragile upwelling ecosystems.

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The eyes of lanternfishes (Myctophidae, Teleostei): Novel ocular specializations for vision in dim light

Busserolles

Marshall

Collin

2014

J of Comparative Neurology

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Lanternfishes are one of the most abundant groups of mesopelagic fishes in the world's oceans and play a critical role in biomass vertical turnover. Despite their importance, very little is known about their physiology or how they use their sensory systems to survive in the extreme conditions of the deep sea. In this study, we provide a comprehensive description of the general morphology of the myctophid eye, based on analysis of 53 different species, to understand better their visual capabilities. Results confirm that myctophids possess several visual adaptations for dim-light conditions, including enlarged eyes, an aphakic gap, a tapetum lucidum, and a pure rod retina with high densities of long photoreceptors. Two novel retinal specializations were also discovered. The first specialization is a fundal pigmentation in adult eyes, found within an isolated retinal region (typically central retina) composed of modified pigment epithelial cells, which we hypothesize to be the remnant of a more pronounced visual specialization important in larval stages. The second specialization is an aggregation of extracellular microtubular-like structures found within the sclerad region of the inner nuclear layer of the retina. We hypothesize that the marked interspecific differences in the hypertrophy of these microtubular-like structures may be related to inherent differences in visual function. A general interspecific variability in other parts of the eye is also revealed and examined in this study. The contribution of both ecology and phylogeny to the evolution of ocular specializations and vision in dim light are discussed.

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The Role of Larval Stages in Systematic Investigations of Marine Teleosts: The Myctophidae, A Case Study

Cited by 46 publications

References 9 publications

Lanternfish larvae from the Agulhas current (SW Indian Ocean)

Lanternfish larvae from the Agulhas current (SW Indian Ocean)

Fish larvae retention linked to abrupt bathymetry at Mejillones Bay (northern Chile) during coastal upwelling events

The eyes of lanternfishes (Myctophidae, Teleostei): Novel ocular specializations for vision in dim light

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