Light in the darkness: New perspective on lanternfish relationships and classification using genomic and morphological data

Martin, Rene P.; Olson, Emily E.; Girard, Matthew G.; Smíth, W. W.; Davis, Matthew P.

doi:10.1016/j.ympev.2017.12.029

Cited by 31 publications

(61 citation statements)

References 53 publications

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“…The dataset for the total‐data hypothesis of relationships including ultraconserved elements (451 UCEs, 357,878 base pairs), additional gene‐fragment sequence data (10 nuclear and mitochondrial gene fragments, 8,226 base pairs), and morphological data (63 characters, Table S2; Yamaguchi, 2000) from Martin et al (2018) was used in this study to infer the phylogenetic relationships of lanternfishes. The UCE data was partitioned to find the best model of molecular evolution using an entropy‐based method (Sliding‐Window Site Characteristics—Entropy Method, SWSC‐EN; Tagliacollo & Lanfear, 2018).…”

Section: Methodsmentioning

confidence: 99%

“…The UCE data was partitioned to find the best model of molecular evolution using an entropy‐based method (Sliding‐Window Site Characteristics—Entropy Method, SWSC‐EN; Tagliacollo & Lanfear, 2018). The additional gene fragments from Martin et al (2018) were partitioned by gene and codon position. Following the identification of UCE and gene‐fragment partitions, PartitionFinder v2.1.1 (Lanfear, Calcott, Kainer, Mayer, & Stamatakis, 2014; Lanfear, Frandsen, Wright, Senfeld, & Calcott, 2017) was used to identify the best‐fitting models of molecular evolution for the concatenated UCE and gene‐fragment dataset from Martin et al (2018).…”

Section: Methodsmentioning

confidence: 99%

“…The additional gene fragments from Martin et al (2018) were partitioned by gene and codon position. Following the identification of UCE and gene‐fragment partitions, PartitionFinder v2.1.1 (Lanfear, Calcott, Kainer, Mayer, & Stamatakis, 2014; Lanfear, Frandsen, Wright, Senfeld, & Calcott, 2017) was used to identify the best‐fitting models of molecular evolution for the concatenated UCE and gene‐fragment dataset from Martin et al (2018). PartitionFinder2 identified 542 subsets for the genetic data in the total dataset (UCEs, gene fragments) with associated models.…”

Section: Methodsmentioning

confidence: 99%

“…We follow the description of heterodont and homodont conditions from Liem, Bemis, Walker, and Grande (2001), who characterized teeth of similar morphology but different in size as homodont. Next, we investigate the evolution of heterodonty across lanternfishes using a recently published and taxonomically comprehensive hypothesis of evolutionary relationships of the Myctophiformes that includes both genomic and morphological data (Martin, Olson, Girard, Smith, & Davis, 2018). Finally, we discuss the potential adaptive importance of heterodont dentition in regard to feeding, niche differentiation, and diversification of lanternfishes.…”

Section: Introductionmentioning

confidence: 99%

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The evolution of specialized dentition in the deep‐sea lanternfishes (Myctophiformes)

Martin

Davis

2020

Journal of Morphology

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The evolution of specialized dentition in the deep‐sea lanternfishes (Myctophiformes)

Martin

Davis

2020

Journal of Morphology

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“…A number of molecular studies and revisions in recent years have assessed the diversity of Myctophidae, but there is yet no consensus about the number of species ( c . 250), genera (33–39) and subfamilies (2–5) contained in this group (Denton, ; Fricke et al ., ; Martin et al ., ; Mirande, ). Most of the species inhabit the mesopelagic (200–1000 m depth) and bathypelagic (1000–4000 m) zones, where no downwelling sunlight penetrates.…”

Section: Introductionmentioning

confidence: 99%

Niche partitioning and morphospace in early stages of two sympatric Diogenichthys species (Myctophidae)

Zavala-Muñoz

Vera‐Duarte

Bustos

et al. 2019

Journal of Fish Biology

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Diet and morphospace of larval stages of two sympatric lanternfish Diogenichthys atlanticus and D. laternatus from the south‐east Pacific Ocean were compared and the covariance between both variables was assessed for each species. Diogenichthys atlanticus stomach contents consisted mainly of copepod nauplii and digested remains and this species had a broader niche than D. laternatus, in which stomach contents were highly digested. No dietary overlap was found between both species. The covariance between skull shape and diet for D. atlanticus was given by a wider mouth gape related to the presence of copepod nauplii, whilst for D. laternatus, a shorter snout and posteriorly displaced eye were related to the presence of highly digested stomach contents. Interspecific differences between diets and skull shapes suggest that both species may have undergone morphological or niche divergence to avoid competition, such as feeding at different hours or depth stratification.

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Composition and diversity of larval fish in the Indian Ocean using morphological and molecular methods

et al. 2021

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Although vital in fisheries management, no comprehensive studies on ichthyoplankton have been conducted in Sri Lankan waters in the north central Indian Ocean hitherto. Hence, this study is the first detailed account of diversity and species composition of larval fish based on samples collected during the southwest monsoon in 2018. In total, 80 species belonging to 69 families were identified using morphological and molecular methods targeting the COI gene. The larval fish diversity varied significantly between regions: east (North East, Central East, and South East) and west (North West, South West, and South). In their larval stages, mesopelagic families were associated with the offshore waters whereas demersal and pelagic families were related with shelf regions in the South, South East, and Central East. The larvae of pelagic families are likely dispersed by the South Monsoon Current from the west to the east regions, while demersal fish seem to be confined to the same area as conspecific adults. The most abundant larval species observed were Selar crumenophthalmus, Cubiceps pauciradiatus, and Dipterygonotus balteatus. High abundances of several commercially important larval tuna species were found in the South East, Central East, and South regions indicating that these waters could be important nursery grounds. Furthermore, Callionymus simplicicornis was recorded for the first time in the Indian Ocean, and seven additional species were found new to Sri Lankan waters. The results from this study also highlight the importance of using combined morphological and molecular methods and the need for strengthening fish nucleotide databases in poorly studied areas of the Indian Ocean.

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Light in the darkness: New perspective on lanternfish relationships and classification using genomic and morphological data

Cited by 31 publications

References 53 publications

The evolution of specialized dentition in the deep‐sea lanternfishes (Myctophiformes)

The evolution of specialized dentition in the deep‐sea lanternfishes (Myctophiformes)

Niche partitioning and morphospace in early stages of two sympatric Diogenichthys species (Myctophidae)

Composition and diversity of larval fish in the Indian Ocean using morphological and molecular methods

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