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Shen KN, Chang CW. The complete mitogenome of the Greytail angelfish Chaetodontoplus poliourus and its phylogenetic relationships (Perciformes: Pomacanthidae). MITOCHONDRIAL DNA PART B-RESOURCES 2021; 6:3333-3335. [PMID: 34746406 PMCID: PMC8567932 DOI: 10.1080/23802359.2021.1933632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The mitogenome of the Greytail angelfish Chaetodontoplus poliourus (Pomacanthidae) was decoded using next-generation sequencing techniques. The de novo assembled mitogenome consists of 16,961 bp, including 13 protein-coding genes, 2 ribosomal RNAs and 22 transfer RNA genes. The gene arrangement is identical to the other available Pomacanthidae mitogenomes submitted to NCBI. The overall base composition of the C. poliourus mitogenome was estimated to be 28.0% A, 30.9% C, 15.8% G and 25.3% T. The phylogenetic analysis of the C. poliourus mitogenome suggests a closer genetic relationship with Vermiculated angelfish Chaetodontoplus mesoleucus as expected from their similar color patterns. The overall pairwise identity except D-loop is 93.7% for these two sister species. The decoding of the C. poliourus mitogenome has enriched gene database for further evolutionary studies and conservation assessments of this uncommon and newly described marine angelfish.
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Affiliation(s)
- Kang-Ning Shen
- Aquatic Technology Laboratories, Agricultural Technology Research Institute, Hsinchu, Taiwan, R.O.C
| | - Chih-Wei Chang
- Marine Ecology and Conservation Research Center, National Academy of Marine Research, Kaohsiung, Taiwan, R.O.C.,Department of Oceanography, National Sun Yat-sen University, Kaohsiung, Taiwan, R.O.C.,National Museum of Marine Biology and Aquarium, Pingtung, Taiwan, R.O.C
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Glaw F, Köhler J, Hawlitschek O, Ratsoavina FM, Rakotoarison A, Scherz MD, Vences M. Extreme miniaturization of a new amniote vertebrate and insights into the evolution of genital size in chameleons. Sci Rep 2021; 11:2522. [PMID: 33510189 PMCID: PMC7844282 DOI: 10.1038/s41598-020-80955-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 12/29/2020] [Indexed: 01/30/2023] Open
Abstract
Evolutionary reduction of adult body size (miniaturization) has profound consequences for organismal biology and is an important subject of evolutionary research. Based on two individuals we describe a new, extremely miniaturized chameleon, which may be the world's smallest reptile species. The male holotype of Brookesia nana sp. nov. has a snout-vent length of 13.5 mm (total length 21.6 mm) and has large, apparently fully developed hemipenes, making it apparently the smallest mature male amniote ever recorded. The female paratype measures 19.2 mm snout-vent length (total length 28.9 mm) and a micro-CT scan revealed developing eggs in the body cavity, likewise indicating sexual maturity. The new chameleon is only known from a degraded montane rainforest in northern Madagascar and might be threatened by extinction. Molecular phylogenetic analyses place it as sister to B. karchei, the largest species in the clade of miniaturized Brookesia species, for which we resurrect Evoluticauda Angel, 1942 as subgenus name. The genetic divergence of B. nana sp. nov. is rather strong (9.9‒14.9% to all other Evoluticauda species in the 16S rRNA gene). A comparative study of genital length in Malagasy chameleons revealed a tendency for the smallest chameleons to have the relatively largest hemipenes, which might be a consequence of a reversed sexual size dimorphism with males substantially smaller than females in the smallest species. The miniaturized males may need larger hemipenes to enable a better mechanical fit with female genitals during copulation. Comprehensive studies of female genitalia are needed to test this hypothesis and to better understand the evolution of genitalia in reptiles.
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Affiliation(s)
- Frank Glaw
- grid.452282.b0000 0001 1013 3702Zoologische Staatssammlung München (ZSM-SNSB), Münchhausenstr. 21, 81247 München, Germany
| | - Jörn Köhler
- grid.462257.00000 0004 0493 4732Hessisches Landesmuseum Darmstadt, Friedensplatz 1, 64283 Darmstadt, Germany
| | - Oliver Hawlitschek
- grid.9026.d0000 0001 2287 2617Centrum für Naturkunde, Universität Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
| | - Fanomezana M. Ratsoavina
- grid.440419.c0000 0001 2165 5629Mention Zoologie et Biodiversité Animale, Université d’Antananarivo, BP 906, 101 Antananarivo, Madagascar
| | - Andolalao Rakotoarison
- grid.440419.c0000 0001 2165 5629Mention Zoologie et Biodiversité Animale, Université d’Antananarivo, BP 906, 101 Antananarivo, Madagascar
| | - Mark D. Scherz
- grid.11348.3f0000 0001 0942 1117Institute of Biochemistry and Biology, Universität Potsdam, Karl-Liebknecht-Str. 24–25, 14476 Potsdam, Germany
| | - Miguel Vences
- grid.6738.a0000 0001 1090 0254Zoologisches Institut, Technische Universität Braunschweig, Mendelssohnstr. 4, 38106 Braunschweig, Germany
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Lejeune B, Bissey L, Didaskalou EA, Sturaro N, Lepoint G, Denoël M. Progenesis as an intrinsic factor of ecological opportunity in a polyphenic amphibian. Funct Ecol 2020. [DOI: 10.1111/1365-2435.13708] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Benjamin Lejeune
- Laboratory of Ecology and Conservation of Amphibians (LECA) Freshwater and OCeanic science Unit of reSearch (FOCUS) University of Liège Liège Belgium
- Laboratory of Oceanology Freshwater and OCeanic science Unit of reSearch (FOCUS) University of Liège Liège Belgium
| | - Lucie Bissey
- Laboratory of Ecology and Conservation of Amphibians (LECA) Freshwater and OCeanic science Unit of reSearch (FOCUS) University of Liège Liège Belgium
| | - Emilie Alexia Didaskalou
- Laboratory of Ecology and Conservation of Amphibians (LECA) Freshwater and OCeanic science Unit of reSearch (FOCUS) University of Liège Liège Belgium
| | - Nicolas Sturaro
- Laboratory of Oceanology Freshwater and OCeanic science Unit of reSearch (FOCUS) University of Liège Liège Belgium
| | - Gilles Lepoint
- Laboratory of Oceanology Freshwater and OCeanic science Unit of reSearch (FOCUS) University of Liège Liège Belgium
| | - Mathieu Denoël
- Laboratory of Ecology and Conservation of Amphibians (LECA) Freshwater and OCeanic science Unit of reSearch (FOCUS) University of Liège Liège Belgium
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Bloom DD, Kolmann M, Foster K, Watrous H. Mode of miniaturisation influences body shape evolution in New World anchovies (Engraulidae). JOURNAL OF FISH BIOLOGY 2020; 96:194-201. [PMID: 31729024 DOI: 10.1111/jfb.14205] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
We explored the macroevolutionary dynamics of miniaturisation in New World anchovies by integrating a time-calibrated phylogeny, geometric morphometrics and phylogenetic comparative methods. We found that the paedomorphic species Amazonsprattus scintilla occupies a novel region of shape space, while the dwarf species Anchoviella manamensis has an overall shape consistent with other anchovies. We found that miniaturisation did not increase overall clade disparity in size or shape beyond the expectations of Brownian motion, nor were there differences in rates of size or shape evolution among clades. Overall, our study shows that while the mode of miniaturisation influences shape evolution, the phenotypic novelty produced by the evolution of miniaturisation did not seem to alter macroevolutionary dynamics.
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Affiliation(s)
- Devin D Bloom
- Department of Biological Sciences, Western Michigan University, Kalamazoo, Michigan, USA
- Institute of the Environment & Sustainability, Western Michigan University, Kalamazoo, Michigan, USA
| | - Matthew Kolmann
- Department of Biological Sciences, George Washington University, Washington, DC, USA
| | - Kimberly Foster
- Department of Biological Sciences, Western Michigan University, Kalamazoo, Michigan, USA
| | - Helen Watrous
- Department of Biological Sciences, Western Michigan University, Kalamazoo, Michigan, USA
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Baraf LM, Pratchett MS, Cowman PF. Ancestral biogeography and ecology of marine angelfishes (F: Pomacanthidae). Mol Phylogenet Evol 2019; 140:106596. [DOI: 10.1016/j.ympev.2019.106596] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 08/13/2019] [Accepted: 08/13/2019] [Indexed: 12/27/2022]
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Konow N, Price S, Abom R, Bellwood D, Wainwright P. Decoupled diversification dynamics of feeding morphology following a major functional innovation in marine butterflyfishes. Proc Biol Sci 2018; 284:rspb.2017.0906. [PMID: 28768889 DOI: 10.1098/rspb.2017.0906] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 06/26/2017] [Indexed: 11/12/2022] Open
Abstract
The diversity of fishes on coral reefs is influenced by the evolution of feeding innovations. For instance, the evolution of an intramandibular jaw joint has aided shifts to corallivory in Chaetodon butterflyfishes following their Miocene colonization of coral reefs. Today, over half of all Chaetodon species consume coral, easily the largest concentration of corallivores in any reef fish family. In contrast with Chaetodon, other chaetodontids, including the long-jawed bannerfishes, remain less intimately associated with coral and mainly consume other invertebrate prey. Here, we test (i) if intramandibular joint (IMJ) evolution in Chaetodon has accelerated feeding morphological diversification, and (ii) if cranial and post-cranial traits were affected similarly. We measured 19 cranial functional morphological traits, gut length and body elongation for 33 Indo-Pacific species. Comparisons of Brownian motion rate parameters revealed that cranial diversification was about four times slower in Chaetodon butterflyfishes with the IMJ than in other chaetodontids. However, the rate of gut length evolution was significantly faster in Chaetodon, with no group-differences for body elongation. The contrasting patterns of cranial and post-cranial morphological evolution stress the importance of comprehensive datasets in ecomorphology. The IMJ appears to enhance coral feeding ability in Chaetodon and represents a design breakthrough that facilitates this trophic strategy. Meanwhile, variation in gut anatomy probably reflects diversity in how coral tissues are procured and assimilated. Bannerfishes, by contrast, retain a relatively unspecialized gut for processing invertebrate prey, but have evolved some of the most extreme cranial mechanical innovations among bony fishes for procuring elusive prey.
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Affiliation(s)
- Nicolai Konow
- Department of Biological Sciences, University of Massachusetts Lowell, Lowell, MA 01852, USA
| | - Samantha Price
- Department of Evolution and Ecology, UC Davis, Davis, CA 95616, USA.,Department of Biological Sciences, Clemson University, Clemson, SC 29634, USA
| | - Richard Abom
- School of Marine and Tropical Biology, James Cook University, Townsville, Queensland 4811, Australia
| | - David Bellwood
- School of Marine and Tropical Biology, James Cook University, Townsville, Queensland 4811, Australia.,ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland 4811, Australia
| | - Peter Wainwright
- Department of Evolution and Ecology, UC Davis, Davis, CA 95616, USA
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Frédérich B, Santini F, Konow N, Schnitzler J, Lecchini D, Alfaro ME. Body shape convergence driven by small size optimum in marine angelfishes. Biol Lett 2017; 13:20170154. [PMID: 28615351 PMCID: PMC5493737 DOI: 10.1098/rsbl.2017.0154] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 05/22/2017] [Indexed: 11/12/2022] Open
Abstract
Convergent evolution of small body size occurs across many vertebrate clades and may reflect an evolutionary response to shared selective pressures. However it remains unclear if other aspects of phenotype undergo convergent evolution in miniaturized lineages. Here we present a comparative analysis of body size and shape evolution in marine angelfishes (Pomacanthidae), a reef fish family characterized by repeated transitions to small body size. We ask if lineages that evolve small sizes show convergent evolution in body shape. Our results reveal that angelfish lineages evolved three different stable size optima with one corresponding to the group of pygmy angelfishes (Centropyge). Then, we test if the observed shifts in body size are associated with changes to new adaptive peaks in shape. Our data suggest that independent evolution to small size optima have induced repeated convergence upon deeper body and steeper head profile in Centropyge These traits may favour manoeuvrability and visual awareness in these cryptic species living among corals, illustrating that functional demands on small size may be related to habitat specialization and predator avoidance. The absence of shape convergence in large marine angelfishes also suggests that more severe requirements exist for small than for large size optima.
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Affiliation(s)
- Bruno Frédérich
- Laboratoire de Morphologie Fonctionnelle et Evolutive, Université de Liège, Liège, Belgium
| | | | - Nicolai Konow
- Department of Biological Sciences, UMass, Lowell, MA, USA
| | - Joseph Schnitzler
- Institute for Terrestrial and Aquatic Wildlife Research, TiHo Hannover, Büsum, Germany
| | - David Lecchini
- USR 3278, PSL, Labex 'Corail', CRIOBE, Moorea, French Polynesia
| | - Michael E Alfaro
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA, USA
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