ArticleBMC evolutionary biology2015
Molecular phylogeny of Squaliformes and first occurrence of bioluminescence in sharks.
Article in BMC evolutionary biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 85 citations in OpenAlex.
- Article
- Article
- Bioluminescence and repeated deep-sea colonization shaped the diversification and body size evolution of squaliform sharks.Proceedings. Biological sciences · 2025Article
- Maternal risk-management elucidates the evolution of reproductive adaptations in sharks by means of natural selection.Scientific reports · 2024Article
- Systematic Distribution of Bioluminescence in Marine Animals: A Species-Level Inventory.Life (Basel, Switzerland) · 2024Review
- Shark mandible evolution reveals patterns of trophic and habitat-mediated diversification.Communications biology · 2023Article
- Grouping behaviour impacts on the parasitic pressure and squamation of sharks.Proceedings. Biological sciences · 2022Article
- Global shifts in species richness have shaped carpet shark evolution.BMC ecology and evolution · 2021Article
- Histological evidence for secretory bioluminescence from pectoral pockets of the American Pocket Shark (Mollisquama mississippiensis).Scientific reports · 2020Article
- From extraocular photoreception to pigment movement regulation: a new control mechanism of the lanternshark luminescence.Scientific reports · 2020Article
- Article
- Etmopteridae bioluminescence: dorsal pattern specificity and aposematic use.Zoological letters · 2019Article
- Cranial morphology in Mollisquama sp. (Squaliformes; Dalatiidae) and patterns of cranial evolution in dalatiid sharks.Journal of anatomy · 2018Article
- Eocene squalomorph sharks (Chondrichthyes, Elasmobranchii) from Antarctica.Journal of South American earth sciences · 2017Article
- Cutting blade dentitions in squaliform sharks form by modification of inherited alternate tooth ordering patterns.Royal Society open science · 2016Article
- Article
- Molecular phylogeny of Squaliformes and first occurrence of bioluminescence in sharks.BMC evolutionary biology · 2015Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 4 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSqualiform sharks represent approximately 27 % of extant shark diversity, comprising more than 130 species with a predominantly deep-dwelling lifestyle. Many Squaliform species are highly specialized, including some that are bioluminescent, a character that is reported exclusively from Squaliform sharks within Chondrichthyes. The interfamiliar relationships within the order are still not satisfactorily resolved. Herein we estimate the phylogenetic interrelationships of a generic level sampling of "squaloid" sharks and closely related taxa using aligned sequences derived from a targeted gene capture approach. The resulting phylogenetic estimate is further used to evaluate the age of first occurrence of bioluminescence in Squaliformes.
resultsOur dataset comprised 172 putative ortholog exon sequences. Phylogenetic estimates result in a fully resolved tree supporting a monophyletic lineage of Squaliformes excluding Echinorhinus. Non-luminous Squalidae are inferred to be the sister to a clade comprising all remaining Squaliform families. Our results suggest that the origin of photophores is coincident with an elevated diversification rate and the splitting of families Dalatiidae, Etmopteridae, Oxynotidae and Somniosidae at the transition of the Lower to the Upper Cretaceous. The presence of luminous organs was confirmed for the Sleeper shark genus Zameus. These results indicate that bioluminescence in sharks is not restricted solely to the families Etmopteridae and Dalatiidae as previously believed.
conclusionsThe sister-clade to non-luminous Squalidae comprises five families. The presence of photophores is reported for extant members of three out of these five families based on results of this study, i.e. Lantern sharks (Etmopteridae), Kitefin sharks (Dalatiidae) and Sleeper sharks (Somniosidae). Our results suggest that the origin of luminous organs arose during the rapid diversification event that gave rise to the extant Squaliform families. These inferences are consistent with the idea of diversification of Squaliform sharks being associated with the emergence of new deep-sea habitats in the Lower Cretaceous, which may have been facilitated by the evolution of bioluminescence.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.