151
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Evolutionary and Ecological Considerations on Nectar-Mediated Tripartite Interactions in Angiosperms and Their Relevance in the Mediterranean Basin. PLANTS 2021; 10:plants10030507. [PMID: 33803275 PMCID: PMC7999006 DOI: 10.3390/plants10030507] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/22/2021] [Accepted: 03/03/2021] [Indexed: 11/16/2022]
Abstract
The Mediterranean basin hosts a high diversity of plants and bees, and it is considered one of the world's biodiversity hotspots. Insect pollination, i.e., pollen transfer from male reproductive structures to conspecific female ones, was classically thought to be a mutualistic relationship that links these two groups of organisms, giving rise to an admirable and complex network of interactions. Although nectar is often involved in mediating these interactions, relatively little is known about modifications in its chemical traits during the evolution of plants. Here, we examine how the current sucrose-dominated floral nectar of most Mediterranean plants could have arisen in the course of evolution of angiosperms. The transition from hexose-rich to sucrose-rich nectar secretion was probably triggered by increasing temperature and aridity during the Cretaceous period, when most angiosperms were radiating. This transition may have opened new ecological niches for new groups of insects that were co-diversifying with angiosperms and for specific nectar-dwelling yeasts that originated later (i.e., Metschnikowiaceae). Our hypothesis embeds recent discoveries in nectar biology, such as the involvement of nectar microbiota and nectar secondary metabolites in shaping interactions with pollinators, and it suggests a complex, multifaceted ecological and evolutionary scenario that we are just beginning to discover.
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152
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Chen XH, Tan SL, Liang YL, Huang L, Xiao HW, Luo HL, Xiong DJ, Yang BY, Ren ZX. The pollination of Habenaria rhodocheila (Orchidaceae) in South China: When butterflies take sides. Ecol Evol 2021; 11:2849-2861. [PMID: 33767841 PMCID: PMC7981216 DOI: 10.1002/ece3.7242] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/06/2021] [Accepted: 01/13/2021] [Indexed: 11/10/2022] Open
Abstract
Habenaria is one of the largest terrestrial genera in the family Orchidaceae. Most field studies on Habenaria species with greenish-white and nocturnal scented flowers are pollinated by nocturnal hawkmoths and settling moths. However, H. rhodocheila presents reddish flowers lacking a detectable scent and fails to fit the moth pollination syndrome. We investigated the pollinators, breeding system, and functional traits of H. rhodocheila in South China and found that two diurnal swallowtail butterflies Papilio helenus and Papilio nephelus (Papilionidae) were the effective pollinators. When butterflies foraged for nectar in the spur, the pollinia became attached between the palpi. A triangular projected median rostellar lobe was found at the entrance (sinus) of the spur of H. rhodocheila. This lobe divided the spur opening into two entrances forcing butterflies to enter their proboscides through the left or right side. When the projection of median rostellar lobe was removed, the site of pollinium attachment changed to the eyes of the butterflies, leading to a higher rate of pollinium removal but lower rate of pollinium deposition. Our quartz glass cylinder choice experiment suggested that visual rather than olfactory cues provided the major stimuli for butterflies to locate these flowers. Hand pollination experiments suggested this species was self-compatible but pollinator-dependent. However, the proportion of seeds with large embryos produced in self-pollinated fruits was significantly lower than in cross-pollinated fruits, indicating a significant inbreeding depression. Unlike many other orchid species, fruit set was higher than rates of pollinium removal, indicating a high level of pollination efficiency in a species with friable pollinia. Shifts from moth to butterfly pollination in the genus Habenaria parallel other orchid lineages providing insights into the potential for pollinator-mediated floral trait selection.
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Affiliation(s)
- Xing-Hui Chen
- Jiangxi Key Laboratory of Plant Resources School of Life Sciences Nanchang University Nanchang China
| | - Shao-Lin Tan
- Jiangxi Key Laboratory of Plant Resources School of Life Sciences Nanchang University Nanchang China
| | - Yue-Long Liang
- Jiulianshan National Natural Reserve Administration Bureau Ganzhou China
| | - Lang Huang
- Jiangxi Key Laboratory of Plant Resources School of Life Sciences Nanchang University Nanchang China
| | - Han-Wen Xiao
- Jiangxi Key Laboratory of Plant Resources School of Life Sciences Nanchang University Nanchang China
| | - Huo-Lin Luo
- Jiangxi Key Laboratory of Plant Resources School of Life Sciences Nanchang University Nanchang China
| | - Dong-Jin Xiong
- Jiangxi Key Laboratory of Plant Resources School of Life Sciences Nanchang University Nanchang China
| | - Bo-Yun Yang
- Jiangxi Key Laboratory of Plant Resources School of Life Sciences Nanchang University Nanchang China
| | - Zong-Xin Ren
- CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of Botany Chinese Academy of Sciences Kunming China
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153
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Andrade Justi S, Soghigian J, Pecor DB, Caicedo-Quiroga L, Rutvisuttinunt W, Li T, Stevens L, Dorn PL, Wiegmann B, Linton YM. From e-voucher to genomic data: Preserving archive specimens as demonstrated with medically important mosquitoes (Diptera: Culicidae) and kissing bugs (Hemiptera: Reduviidae). PLoS One 2021; 16:e0247068. [PMID: 33630885 PMCID: PMC7906454 DOI: 10.1371/journal.pone.0247068] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/29/2021] [Indexed: 12/26/2022] Open
Abstract
Scientific collections such as the U.S. National Museum (USNM) are critical to filling knowledge gaps in molecular systematics studies. The global taxonomic impediment has resulted in a reduction of expert taxonomists generating new collections of rare or understudied taxa and these large historic collections may be the only reliable source of material for some taxa. Integrated systematics studies using both morphological examinations and DNA sequencing are often required for resolving many taxonomic issues but as DNA methods often require partial or complete destruction of a sample, there are many factors to consider before implementing destructive sampling of specimens within scientific collections. We present a methodology for the use of archive specimens that includes two crucial phases: 1) thoroughly documenting specimens destined for destructive sampling—a process called electronic vouchering, and 2) the pipeline used for whole genome sequencing of archived specimens, from extraction of genomic DNA to assembly of putative genomes with basic annotation. The process is presented for eleven specimens from two different insect subfamilies of medical importance to humans: Anophelinae (Diptera: Culicidae)—mosquitoes and Triatominae (Hemiptera: Reduviidae)—kissing bugs. Assembly of whole mitochondrial genome sequences of all 11 specimens along with the results of an ortholog search and BLAST against the NCBI nucleotide database are also presented.
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Affiliation(s)
- Silvia Andrade Justi
- Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, Suitland, MD, United States of America
- Entomology Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
- Department of Entomology, Smithsonian Institution National Museum of Natural History, Washington, DC, United States of America
- * E-mail:
| | - John Soghigian
- Department of Entomology, North Carolina State University, Raleigh, NC, United States of America
| | - David B. Pecor
- Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, Suitland, MD, United States of America
- Entomology Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
- Department of Entomology, Smithsonian Institution National Museum of Natural History, Washington, DC, United States of America
| | - Laura Caicedo-Quiroga
- Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, Suitland, MD, United States of America
- Entomology Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
- Department of Entomology, Smithsonian Institution National Museum of Natural History, Washington, DC, United States of America
| | - Wiriya Rutvisuttinunt
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
| | - Tao Li
- Viral Diseases Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
| | - Lori Stevens
- Department of Biology, University of Vermont, Burlington, VT, United States of America
| | - Patricia L. Dorn
- Department of Biological Sciences, Loyola University New Orleans, New Orleans, LA, United States of America
| | - Brian Wiegmann
- Department of Entomology, North Carolina State University, Raleigh, NC, United States of America
| | - Yvonne-Marie Linton
- Walter Reed Biosystematics Unit, Smithsonian Institution Museum Support Center, Suitland, MD, United States of America
- Entomology Branch, Walter Reed Army Institute of Research, Silver Spring, MD, United States of America
- Department of Entomology, Smithsonian Institution National Museum of Natural History, Washington, DC, United States of America
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154
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Abstract
One hundred fifty years ago Darwin published The Descent of Man, and Selection in Relation to Sex, in which he presented his theory of sexual selection with its emphasis on sexual beauty. However, it was not until 50 y ago that there was a renewed interest in Darwin’s theory in general, and specifically the potency of mate choice. Darwin suggested that in many cases female preferences for elaborately ornamented males derived from a female’s taste for the beautiful, the notion that females were attracted to sexual beauty for its own sake. Initially, female mate choice attracted the interest of behavioral ecologists focusing on the fitness advantages accrued through mate choice. Subsequent studies focused on sensory ecology and signal design, often showing how sensory end organs influenced the types of traits females found attractive. Eventually, investigations of neural circuits, neurogenetics, and neurochemistry uncovered a more complete scaffolding underlying sexual attraction. More recently, research inspired by human studies in psychophysics, behavioral economics, and neuroaesthetics have provided some notion of its higher-order mechanisms. In this paper, I review progress in our understanding of Darwin’s conjecture of “a taste for the beautiful” by considering research from these diverse fields that have conspired to provide unparalleled insight into the chooser’s mate choices.
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155
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Wang L, Cornell SJ, Speed MP, Arbuckle K. Coevolution of group-living and aposematism in caterpillars: warning colouration may facilitate the evolution from group-living to solitary habits. BMC Ecol Evol 2021; 21:25. [PMID: 33583398 PMCID: PMC7883577 DOI: 10.1186/s12862-020-01738-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 12/16/2020] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Animals use diverse antipredator mechanisms, including visual signalling of aversive chemical defence (aposematism). However, the initial evolution of aposematism poses the problem that the first aposematic individuals are conspicuous to predators who have not learned the significance of the warning colouration. In one scenario, aposematism evolves in group-living species and originally persisted due to kin selection or positive frequency-dependent selection in groups. Alternatively, group-living might evolve after aposematism because grouping can amplify the warning signal. However, our current understanding of the evolutionary dynamics of these traits is limited, leaving the relative merit of these scenarios unresolved. RESULTS We used a phylogenetic comparative approach to estimate phenotypic evolutionary models to enable inferences regarding ancestral states and trait dynamics of grouping and aposematic colouration in a classic model system (caterpillars). We find strong support for aposematism at the root of the clade, and some (but weaker) support for ancestral solitary habits. Transition rates between aposematism and crypsis are generally higher than those between group-living and solitary-living, suggesting that colouration is more evolutionarily labile than aggregation. We also find that the transition from group-living to solitary-living states can only happen in aposematic lineage, suggesting that aposematism facilitates the evolution of solitary caterpillars, perhaps due to the additional protection offered when the benefits of grouping are lost. We also find that the high frequency of solitary, cryptic caterpillars is because this state is particularly stable, in that the transition rates moving towards this state are substantially higher than those moving away from it, favouring its accumulation in the clade over evolutionary time. CONCLUSIONS Our results provide new insights into the coevolution of colour and aggregation in caterpillars. We find support for an aposematic caterpillar at the root of this major clade, and for the signal augmentation hypothesis as an explanation of the evolution of aposematic, group-living caterpillars. We find that colouration is more labile than aggregation behaviour, but that the combination of solitary and cryptic habits is particularly stable. Finally, our results reveal that the transitions from group-living to solitary-living could be facilitated by aposematism, providing a new link between these well-studied traits.
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Affiliation(s)
- Lingzi Wang
- Institute of Integrative Biology, University of Liverpool, L69 7ZB, Liverpool, UK.
| | - Stephen J Cornell
- Institute of Integrative Biology, University of Liverpool, L69 7ZB, Liverpool, UK
| | - Michael P Speed
- School of Life Science, University of Liverpool, L69 7ZB, Liverpool, UK
| | - Kevin Arbuckle
- Department of Biosciences, College of Science, Swansea University, SA2 8PP, Swansea, UK
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156
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Jiang L, Goldsmith MR, Xia Q. Advances in the Arms Race Between Silkworm and Baculovirus. Front Immunol 2021; 12:628151. [PMID: 33633750 PMCID: PMC7900435 DOI: 10.3389/fimmu.2021.628151] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/04/2021] [Indexed: 11/13/2022] Open
Abstract
Insects are the largest group of animals. Nearly all organisms, including insects, have viral pathogens. An important domesticated economic insect is the silkworm moth Bombyx mori. B. mori nucleopolyhedrovirus (BmNPV) is a typical baculovirus and a primary silkworm pathogen. It causes major economic losses in sericulture. Baculoviruses are used in biological pest control and as a bioreactor. Silkworm and baculovirus comprise a well-established model of insect–virus interactions. Several recent studies have focused on this model and provided novel insights into viral infections and host defense. Here, we focus on baculovirus invasion, silkworm immune response, baculovirus evasion of host immunity, and enhancement of antiviral efficacy. We also discuss major issues remaining and future directions of research on silkworm antiviral immunity. Elucidation of the interaction between silkworm and baculovirus furnishes a theoretical basis for targeted pest control, enhanced pathogen resistance in economically important insects, and bioreactor improvement.
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Affiliation(s)
- Liang Jiang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.,Biological Science Research Center, Southwest University, Chongqing, China
| | - Marian R Goldsmith
- Department of Biological Sciences, University of Rhode Island, Kingston, RI, United States
| | - Qingyou Xia
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.,Biological Science Research Center, Southwest University, Chongqing, China
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157
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Sondhi Y, Ellis EA, Bybee SM, Theobald JC, Kawahara AY. Light environment drives evolution of color vision genes in butterflies and moths. Commun Biol 2021; 4:177. [PMID: 33564115 PMCID: PMC7873203 DOI: 10.1038/s42003-021-01688-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 01/04/2021] [Indexed: 01/30/2023] Open
Abstract
Opsins, combined with a chromophore, are the primary light-sensing molecules in animals and are crucial for color vision. Throughout animal evolution, duplications and losses of opsin proteins are common, but it is unclear what is driving these gains and losses. Light availability is implicated, and dim environments are often associated with low opsin diversity and loss. Correlations between high opsin diversity and bright environments, however, are tenuous. To test if increased light availability is associated with opsin diversification, we examined diel niche and identified opsins using transcriptomes and genomes of 175 butterflies and moths (Lepidoptera). We found 14 independent opsin duplications associated with bright environments. Estimating their rates of evolution revealed that opsins from diurnal taxa evolve faster-at least 13 amino acids were identified with higher dN/dS rates, with a subset close enough to the chromophore to tune the opsin. These results demonstrate that high light availability increases opsin diversity and evolution rate in Lepidoptera.
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Affiliation(s)
- Yash Sondhi
- Department of Biology, Florida International University, Miami, FL, USA.
| | - Emily A Ellis
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History, University of Florida, Gainesville, FL, USA
| | - Seth M Bybee
- Department of Biology, Brigham Young University, Provo, UT, USA
| | - Jamie C Theobald
- Department of Biology, Florida International University, Miami, FL, USA
| | - Akito Y Kawahara
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History, University of Florida, Gainesville, FL, USA
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158
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Gershman A, Romer TG, Fan Y, Razaghi R, Smith WA, Timp W. De novo genome assembly of the tobacco hornworm moth (Manduca sexta). G3 (BETHESDA, MD.) 2021; 11:jkaa047. [PMID: 33561252 PMCID: PMC8022704 DOI: 10.1093/g3journal/jkaa047] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/20/2020] [Indexed: 01/24/2023]
Abstract
The tobacco hornworm, Manduca sexta, is a lepidopteran insect that is used extensively as a model system for studying insect biology, development, neuroscience, and immunity. However, current studies rely on the highly fragmented reference genome Msex_1.0, which was created using now-outdated technologies and is hindered by a variety of deficiencies and inaccuracies. We present a new reference genome for M. sexta, JHU_Msex_v1.0, applying a combination of modern technologies in a de novo assembly to increase continuity, accuracy, and completeness. The assembly is 470 Mb and is ∼20× more continuous than the original assembly, with scaffold N50 > 14 Mb. We annotated the assembly by lifting over existing annotations and supplementing with additional supporting RNA-based data for a total of 25,256 genes. The new reference assembly is accessible in annotated form for public use. We demonstrate that improved continuity of the M. sexta genome improves resequencing studies and benefits future research on M. sexta as a model organism.
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Affiliation(s)
- Ariel Gershman
- Department of Molecular Biology and Genetics, Johns Hopkins University, Baltimore, MD, 21287, USA
| | - Tatiana G Romer
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Yunfan Fan
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Roham Razaghi
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Wendy A Smith
- Department of Biology, Northeastern University, Boston, MA, 02215, USA
| | - Winston Timp
- Department of Molecular Biology and Genetics, Johns Hopkins University, Baltimore, MD, 21287, USA
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
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159
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Feller KD, Sharkey CR, McDuffee-Altekruse A, Bracken-Grissom HD, Lord NP, Porter ML, Schweikert LE. Surf and turf vision: Patterns and predictors of visual acuity in compound eye evolution. ARTHROPOD STRUCTURE & DEVELOPMENT 2021; 60:101002. [PMID: 33191145 DOI: 10.1016/j.asd.2020.101002] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/08/2020] [Accepted: 10/13/2020] [Indexed: 06/11/2023]
Abstract
Eyes have the flexibility to evolve to meet the ecological demands of their users. Relative to camera-type eyes, the fundamental limits of optical diffraction in arthropod compound eyes restrict the ability to resolve fine detail (visual acuity) to much lower degrees. We tested the capacity of several ecological factors to predict arthropod visual acuity, while simultaneously controlling for shared phylogenetic history. In this study, we have generated the most comprehensive review of compound eye visual acuity measurements to date, containing 385 species that span six of the major arthropod classes. An arthropod phylogeny, made custom to this database, was used to develop a phylogenetically-corrected generalized least squares (PGLS) linear model to evaluate four ecological factors predicted to underlie compound eye visual acuity: environmental light intensity, foraging strategy (predator vs. non-predator), horizontal structure of the visual scene, and environmental medium (air vs. water). To account for optical constraints on acuity related to animal size, body length was also included, but this did not show a significant effect in any of our models. Rather, the PGLS analysis revealed that the strongest predictors of compound eye acuity are described by a combination of environmental medium, foraging strategy, and environmental light intensity.
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Affiliation(s)
- Kathryn D Feller
- Union College, Department of Biological Sciences, 807 Union St., Schenectady, NY, 12308, USA.
| | - Camilla R Sharkey
- University of Minnesota, Ecology Evolution and Behavior Department, Saint Paul, MN, USA
| | | | - Heather D Bracken-Grissom
- Institute of Environment, Department of Biological Sciences, Florida International University, North Miami, FL 33181, USA
| | - Nathan P Lord
- Louisiana State University, Entomology Department, Baton Rouge, LA, USA
| | - Megan L Porter
- University of Hawai'i at Mānoa, Department of Biology, Honolulu, HI, USA
| | - Lorian E Schweikert
- Institute of Environment, Department of Biological Sciences, Florida International University, North Miami, FL 33181, USA
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160
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Marco HG, Šimek P, Gäde G. Unique Members of the Adipokinetic Hormone Family in Butterflies and Moths (Insecta, Lepidoptera). Front Physiol 2020; 11:614552. [PMID: 33391031 PMCID: PMC7773649 DOI: 10.3389/fphys.2020.614552] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 11/03/2020] [Indexed: 01/17/2023] Open
Abstract
Lepidoptera is amongst one of the four most speciose insect orders and ecologically very successful because of their ability to fly. Insect flight is always aerobic and exacts a high metabolic demand on the animal. A family of structurally related neuropeptides, generically referred to as adipokinetic hormones (AKHs), play a key role in triggering the release of readily utilizable fuel metabolites into the hemolymph from the storage forms in the fat body. We used mass spectrometry to elucidate AKH sequences from 34 species of Lepidoptera and searched the literature and publicly available databases to compile (in a phylogenetic context) a comprehensive list of all Lepidoptera sequences published/predicted from a total of 76 species. We then used the resulting set of 15 biochemically characterized AKHs in a physiological assay that measures lipid or carbohydrate mobilization in three different lepidopteran species to learn about the functional cross-activity (receptor-ligand interactions) amongst the different butterfly/moth families. Our results include novel peptide structures, demonstrate structural diversity, phylogenetic trends in peptide distribution and order-specificity of Lepidoptera AKHs. There is almost an equal occurrence of octa-, nona-, and decapeptides, with an unparalleled emphasis on nonapeptides than in any insect order. Primitive species make Peram-CAH-II, an octapeptide found also in other orders; the lepidopteran signature peptide is Manse-AKH. Not all of the 15 tested AKHs are active in Pieris brassicae; this provides insight into structure-activity specificity and could be useful for further investigations into possible biorational insecticide development.
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Affiliation(s)
- Heather G. Marco
- Department of Biological Sciences, University of Cape Town, Rondebosch, South Africa
| | - Petr Šimek
- Biology Centre, Czech Academy of Sciences, České Budějovice, Czechia
| | - Gerd Gäde
- Department of Biological Sciences, University of Cape Town, Rondebosch, South Africa
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161
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Efetov KA, Kucherenko EE. Structural Analysis of Sex Pheromones
and Attractants in Zygaenidae (Insecta, Lepidoptera): Biochemical
and Evolutionary Aspects. J EVOL BIOCHEM PHYS+ 2020. [DOI: 10.1134/s0022093020050014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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162
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Toussaint EFA, Ellis EA, Gott RJ, Warren AD, Dexter KM, Storer C, Lohman DJ, Kawahara AY. Historical biogeography of Heteropterinae skippers via Beringian and post‐Tethyan corridors. ZOOL SCR 2020. [DOI: 10.1111/zsc.12457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emmanuel F. A. Toussaint
- Natural History Museum of Geneva Geneva Switzerland
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History University of Florida Gainesville FL USA
| | - Emily A. Ellis
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History University of Florida Gainesville FL USA
| | - Riley J. Gott
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History University of Florida Gainesville FL USA
| | - Andrew D. Warren
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History University of Florida Gainesville FL USA
| | - Kelly M. Dexter
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History University of Florida Gainesville FL USA
| | - Caroline Storer
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History University of Florida Gainesville FL USA
| | - David J. Lohman
- Biology Department City College of New YorkCity University of New York New York NY USA
- Ph.D. Program in Biology, Graduate Center City University of New York New York NY USA
- Entomology Section National Museum of Natural History Manila Philippines
| | - Akito Y. Kawahara
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History University of Florida Gainesville FL USA
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163
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Zhao X, Xu H, He K, Shi Z, Chen X, Ye X, Mei Y, Yang Y, Li M, Gao L, Xu L, Xiao H, Liu Y, Lu Z, Li F. A chromosome-level genome assembly of rice leaffolder, Cnaphalocrocis medinalis. Mol Ecol Resour 2020; 21:561-572. [PMID: 33051980 DOI: 10.1111/1755-0998.13274] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/21/2020] [Accepted: 10/01/2020] [Indexed: 12/01/2022]
Abstract
The rice leaffolder, Cnaphalocrocis medinalis Guenée (Crambidae, Lepidoptera), is an important agricultural pest that causes serious losses to rice production in rice-growing regions with high humidity and temperature. However, a lack of genomic resources limits in-depth understanding of its biological characteristics and ecological adaptation. Here, we sequenced the genome of rice leaffolder using the Illumina and PacBio platforms, yielding a genome assembly of 528.3 Mb with a contig N50 of 524.6 kb. A high percentage (96.4%) of Benchmarking Universal Single-Copy Orthologs (BUSCOs) were successfully detected, suggesting high-level completeness of the genome assembly. In total, 39.5% of the genome consists of repeat sequences and 15,045 protein-coding genes were annotated. Comparative phylogenomic analysis showed that some gene families associated with hormone biosynthesis expanded in rice leaffolder. Next, we used the Hi-C technique to produce a chromosome-level genome assembly with a scaffold N50 of 16.1 Mb by anchoring 3,248 scaffolds to 31 chromosomes. The rice leaffolder genome showed high chromosomal synteny with the genome of four other lepidopteran insects. By comparing coverage ratios from the genome resequencing of male and female pupae, we identified near intact Z and W chromosomes. The W chromosome is estimated as 20.75 Mb, which is the most complete known W chromosome in Lepidoptera. The protein-coding genes on the W chromosome were significantly enriched in metabolic pathways. In all, the high-quality genome assembly and the near-intact W chromosome of rice leaffolder should be a useful resource for the fields of insect migration, chromosome evolution and pest control.
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Affiliation(s)
- Xianxin Zhao
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Hongxing Xu
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agroproducts, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Kang He
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Zhenmin Shi
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Xi Chen
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Xinhai Ye
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Yang Mei
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Yajun Yang
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agroproducts, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Meizhen Li
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Libin Gao
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Le Xu
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Huamei Xiao
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou, China.,College of Life Sciences and Resource Environment, Key Laboratory of Crop Growth and Development Regulation of Jiangxi Province, Yichun University, Yichun, China
| | - Ying Liu
- Agriculture Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Zhongxian Lu
- State Key Laboratory for Managing Biotic and Chemical Treats to the Quality and Safety of Agroproducts, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Fei Li
- State Key Laboratory of Rice Biology & Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
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164
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Bell KC, Allen JM, Johnson KP, Demboski JR, Cook JA. Disentangling lousy relationships: Comparative phylogenomics of two sucking louse lineages parasitizing chipmunks. Mol Phylogenet Evol 2020; 155:106998. [PMID: 33130299 DOI: 10.1016/j.ympev.2020.106998] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/21/2020] [Accepted: 10/22/2020] [Indexed: 11/29/2022]
Abstract
The evolution of obligate parasites is often interpreted in light of their hosts' evolutionary history. An expanded approach is to examine the histories of multiple lineages of parasites that inhabit similar environments on a particular host lineage. Western North American chipmunks (genus Tamias) have a broad distribution, a history of divergence with gene flow, and host two species of sucking lice (Anoplura), Hoplopleura arboricola and Neohaematopinus pacificus. From total genomic sequencing, we obtained sequences of over 1100 loci sampled across the genomes of these lice to compare their evolutionary histories and examine the roles of host association in structuring louse relationships. Within each louse species, clades are largely associated with closely related chipmunk host species. Exceptions to this pattern appear to have a biogeographic component, but differ between the two louse species. Phylogenetic relationships among these major louse clades, in both species, are not congruent with chipmunk relationships. In the context of host associations, each louse lineage has a different evolutionary history, supporting the hypothesis that host-parasite assemblages vary both across the landscape and with the taxa under investigation. In addition, the louse Hoplopleura erratica (parasitizing the eastern Tamias striatus) is embedded within H. arboricola, rendering it paraphyletic. This phylogenetic result, together with comparable divergences within H. arboricola, indicate a need for taxonomic revision. Both host divergence and biogeographic components shape parasite diversification as demonstrated by the distinctive diversification patterns of these two independently evolving lineages that parasitize the same hosts.
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Affiliation(s)
- Kayce C Bell
- Mammalogy Department, Natural History Museum of Los Angeles County, Los Angeles, CA, USA; Department of Biology, Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM, USA; Zoology Department, Denver Museum of Nature & Science, Denver, CO, USA.
| | - Julie M Allen
- Department of Biology, University of Nevada Reno, Reno, NV, USA
| | - Kevin P Johnson
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois Urbana-Champaign, Champaign, IL, USA
| | - John R Demboski
- Zoology Department, Denver Museum of Nature & Science, Denver, CO, USA
| | - Joseph A Cook
- Department of Biology, Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM, USA
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165
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Léger T, Mally R, Neinhuis C, Nuss M. Refining the phylogeny of Crambidae with complete sampling of subfamilies (Lepidoptera, Pyraloidea). ZOOL SCR 2020. [DOI: 10.1111/zsc.12452] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Théo Léger
- Museum für Naturkunde – Leibniz‐Institut für Evolutions‐ und Biodiversitätsforschung Berlin Germany
| | - Richard Mally
- Faculty of Forestry and Wood Sciences Czech University of Life Sciences in Prague Praha Czech Republic
| | | | - Matthias Nuss
- Museum of Zoology Senckenberg Natural History Collections Dresden Germany
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166
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Song H, Béthoux O, Shin S, Donath A, Letsch H, Liu S, McKenna DD, Meng G, Misof B, Podsiadlowski L, Zhou X, Wipfler B, Simon S. Phylogenomic analysis sheds light on the evolutionary pathways towards acoustic communication in Orthoptera. Nat Commun 2020; 11:4939. [PMID: 33009390 PMCID: PMC7532154 DOI: 10.1038/s41467-020-18739-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 09/11/2020] [Indexed: 01/01/2023] Open
Abstract
Acoustic communication is enabled by the evolution of specialised hearing and sound producing organs. In this study, we performed a large-scale macroevolutionary study to understand how both hearing and sound production evolved and affected diversification in the insect order Orthoptera, which includes many familiar singing insects, such as crickets, katydids, and grasshoppers. Using phylogenomic data, we firmly establish phylogenetic relationships among the major lineages and divergence time estimates within Orthoptera, as well as the lineage-specific and dynamic patterns of evolution for hearing and sound producing organs. In the suborder Ensifera, we infer that forewing-based stridulation and tibial tympanal ears co-evolved, but in the suborder Caelifera, abdominal tympanal ears first evolved in a non-sexual context, and later co-opted for sexual signalling when sound producing organs evolved. However, we find little evidence that the evolution of hearing and sound producing organs increased diversification rates in those lineages with known acoustic communication.
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Affiliation(s)
- Hojun Song
- Department of Entomology, Texas A&M University, College Station, TX, 77843-2475, USA.
| | - Olivier Béthoux
- CR2P (Centre de Recherche en Paléontologie - Paris), MNHN - CNRS - Sorbonne Université, Muséum National d'Histoire Naturelle, 75005, Paris, France
| | - Seunggwan Shin
- Department of Biological Sciences and Center for Biodiversity Research, University of Memphis, Memphis, TN, 38152, USA
- School of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Alexander Donath
- Center for Molecular Biodiversity Research (ZMB), Zoological Research Museum Alexander Koenig (ZFMK), 53113, Bonn, Germany
| | - Harald Letsch
- Department für Botanik und Biodiversitätsforschung, Universität Wien, 1030, Vienna, Austria
| | - Shanlin Liu
- China National GeneBank, BGI-Shenzhen, 518083, Guangdong, China
- Department of Entomology, College of Plant Protection, China Agricultural University, 100193, Beijing, China
| | - Duane D McKenna
- Department of Biological Sciences and Center for Biodiversity Research, University of Memphis, Memphis, TN, 38152, USA
| | - Guanliang Meng
- China National GeneBank, BGI-Shenzhen, 518083, Guangdong, China
| | - Bernhard Misof
- Center for Molecular Biodiversity Research (ZMB), Zoological Research Museum Alexander Koenig (ZFMK), 53113, Bonn, Germany
| | - Lars Podsiadlowski
- Center for Molecular Biodiversity Research (ZMB), Zoological Research Museum Alexander Koenig (ZFMK), 53113, Bonn, Germany
| | - Xin Zhou
- Department of Entomology, College of Plant Protection, China Agricultural University, 100193, Beijing, China
| | - Benjamin Wipfler
- Institut für Spezielle Zoologie und Evolutionsbiologie, Friedrich-Schiller-University Jena, 07743, Jena, Germany
- Center of Taxonomy and Evolutionary Research, Zoological Research Museum Alexander Koenig, 53113, Bonn, Germany
| | - Sabrina Simon
- Biosystematics Group, Wageningen University and Research, 6708 PB, Wageningen, Netherlands.
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167
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Zhang W, Shih C, Shih Y, Ren D. A new macrolepidopteran moth (Insecta, Lepidoptera, Geometridae) in Miocene Dominican amber. Zookeys 2020; 965:73-84. [PMID: 32973381 PMCID: PMC7483395 DOI: 10.3897/zookeys.965.54461] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/12/2020] [Indexed: 11/12/2022] Open
Abstract
A new genus and species of fossil moth, Miogeometrida chunjenshihi Zhang, Shih & Shih, gen. et sp. nov., assigned to Geometridae, is described from Miocene Dominican amber dating from 15-20 Mya. The new genus is characterized by the forewing without a fovea, R1 not anastomosing with Sc, no areole formed by veins R1 and Rs, R1 and Rs1 completely coincident, M2 arising midway between M1 and M3, anal veins 1A and 2A fused for their entire lengths; and the hind wing with Rs running close to Sc + R1 and M2 absent.
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Affiliation(s)
- Weiting Zhang
- Hebei GEO University, 136 Huaiandonglu, Shijiazhuang 050031, China Hebei GEO University Shijiazhuang China.,State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, CAS, Nanjing 210008, China Nanjing Institute of Geology and Palaeontology Nanjing China
| | - Chungkun Shih
- College of Life Sciences and Academy for Multidisciplinary Studies, Capital Normal University, 105 Xisanhuanbeilu, Haidian District, Beijing 100048, China Capital Normal University Beijing China.,Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013-7012, USA National Museum of Natural History Washington United States of America
| | - YuHong Shih
- Laboratorio Dominicano De Ambar Y Gemas, Santo Domingo, Dominican Republic Laboratorio Dominicano De Ambar Y Gemas Santo Domingo Dominican Republic
| | - Dong Ren
- College of Life Sciences and Academy for Multidisciplinary Studies, Capital Normal University, 105 Xisanhuanbeilu, Haidian District, Beijing 100048, China Capital Normal University Beijing China
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168
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Hao M, Jin Q, Meng G, Yang C, Yang S, Shi Z, Tang M, Liu S, Li Y, Li J, Zhang D, Su X, Shih C, Sun Y, Wilson JJ, Zhou X, Zhang A. Using full-length metabarcoding and DNA barcoding to infer community assembly for speciose taxonomic groups: a case study. Evol Ecol 2020. [DOI: 10.1007/s10682-020-10072-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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169
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Fitzpatrick JL, Bridge CD, Snook RR. Repeated evidence that the accelerated evolution of sperm is associated with their fertilization function. Proc Biol Sci 2020; 287:20201286. [PMID: 32752988 PMCID: PMC7575512 DOI: 10.1098/rspb.2020.1286] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Spermatozoa are the most morphologically diverse cell type, leading to the widespread assumption that they evolve rapidly. However, there is no direct evidence that sperm evolve faster than other male traits. Such a test requires comparing male traits that operate in the same selective environment, ideally produced from the same tissue, yet vary in function. Here, we examine rates of phenotypic evolution in sperm morphology using two insect groups where males produce fertile and non-fertile sperm types (Drosophila species from the obscura group and a subset of Lepidoptera species), where these constraints are solved. Moreover, in Drosophila we test the relationship between rates of sperm evolution and the link with the putative selective pressures of fertilization function and postcopulatory sexual selection exerted by female reproductive organs. We find repeated evolutionary patterns across these insect groups—lengths of fertile sperm evolve faster than non-fertile sperm. In Drosophila, fertile sperm length evolved faster than body size, but at the same rate as female reproductive organ length. We also compare rates of evolution of different sperm components, showing that head length evolves faster in fertile sperm while flagellum length evolves faster in non-fertile sperm. Our study provides direct evidence that sperm length evolves more rapidly in fertile sperm, probably because of their functional role in securing male fertility and in response to selection imposed by female reproductive organs.
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Affiliation(s)
- John L Fitzpatrick
- Department of Zoology, Stockholm University, Svante Arrhenius väg 18B, SE-10691, Sweden.,Faculty of Life Sciences, University of Manchester, Michael Smith Building, Manchester M13 9PT, UK
| | - C Daisy Bridge
- Faculty of Life Sciences, University of Manchester, Michael Smith Building, Manchester M13 9PT, UK
| | - Rhonda R Snook
- Department of Zoology, Stockholm University, Svante Arrhenius väg 18B, SE-10691, Sweden
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170
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Yack JE, Raven BH, Leveillee MB, Naranjo M. What Does an Insect Hear? Reassessing the Role of Hearing in Predator Avoidance with Insights from Vertebrate Prey. Integr Comp Biol 2020; 60:1036-1057. [PMID: 32717080 DOI: 10.1093/icb/icaa097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Insects have a diversity of hearing organs known to function in a variety of contexts, including reproduction, locating food, and defense. While the role of hearing in predator avoidance has been extensively researched over the past several decades, this research has focused on the detection of one type of predator-echolocating bats. Here we reassess the role of hearing in antipredator defense by considering how insects use their ears to detect and avoid the wide range of predators that consume them. To identify the types of sounds that could be relevant to insect prey, we first review the topic of hearing-mediated predator avoidance in vertebrates. Sounds used by vertebrate prey to assess predation risk include incidental sound cues (e.g., flight sounds, rustling vegetation, and splashing) produced by an approaching predator or another escaping prey, as well as communication signals produced by a predator (e.g., echolocation calls, songs) or nonpredator (e.g., alarm calls). We then review what is known, and what is not known, about such sounds made by the main predators and parasitoids of insects (i.e., birds, bats, terrestrial vertebrates, and invertebrates) and how insects respond to them. Three key insights emerged from our review. First, there is a lack of information on how both vertebrate and insect prey use passive sound cues produced by predators to avoid being captured. Second, while there are numerous examples of vertebrate prey eavesdropping on the calls and songs of predators and nonpredators to assess risk, there are currently no such examples for eared insect prey. Third, the hearing sensitivity of many insects, including those with ears considered to be dedicated to detecting bats or mates, overlaps with both sound cues and signals generated by nonbat predators. Sounds of particular relevance to insect prey include the flight sounds and calls of insectivorous birds, the flight sounds of insect predators and parasitoids, and rustling vegetation sounds of birds and terrestrial predators. We conclude that research on the role of insect hearing in predator avoidance has been disproportionally focused on bat-detection, and that acoustically-mediated responses to other predators may have been overlooked because the responses of prey may be subtle (e.g., ceasing activity, increasing vigilance). We recommend that researchers expand their testing of hearing-mediated risk assessment in insects by considering the wide range of sounds generated by predators, and the varied responses exhibited by prey to these sounds.
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Affiliation(s)
- Jayne E Yack
- Department of Biology, Nesbitt Biology Building, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
| | - Brianna H Raven
- Department of Biology, Nesbitt Biology Building, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
| | - Michelle B Leveillee
- Department of Biology, Nesbitt Biology Building, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
| | - Mairelys Naranjo
- Department of Biology, Nesbitt Biology Building, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada
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171
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Banerjee TD, Ramos D, Monteiro A. Expression of Multiple engrailed Family Genes in Eyespots of Bicyclus anynana Butterflies Does Not Implicate the Duplication Events in the Evolution of This Morphological Novelty. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.00227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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172
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Molecular Clocks without Rocks: New Solutions for Old Problems. Trends Genet 2020; 36:845-856. [PMID: 32709458 DOI: 10.1016/j.tig.2020.06.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 06/02/2020] [Accepted: 06/11/2020] [Indexed: 02/07/2023]
Abstract
Molecular data have been used to date species divergences ever since they were described as documents of evolutionary history in the 1960s. Yet, an inadequate fossil record and discordance between gene trees and species trees are persistently problematic. We examine how, by accommodating gene tree discordance and by scaling branch lengths to absolute time using mutation rate and generation time, multispecies coalescent (MSC) methods can potentially overcome these challenges. We find that time estimates can differ - in some cases, substantially - depending on whether MSC methods or traditional phylogenetic methods that apply concatenation are used, and whether the tree is calibrated with pedigree-based mutation rates or with fossils. We discuss the advantages and shortcomings of both approaches and provide practical guidance for data analysis when using these methods.
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173
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Zhang S, Shen S, Peng J, Zhou X, Kong X, Ren P, Liu F, Han L, Zhan S, Huang Y, Zhang A, Zhang Z. Chromosome‐level genome assembly of an important pine defoliator,
Dendrolimus punctatus
(Lepidoptera; Lasiocampidae). Mol Ecol Resour 2020; 20:1023-1037. [DOI: 10.1111/1755-0998.13169] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 02/29/2020] [Accepted: 04/09/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Sufang Zhang
- Key Laboratory of Forest Protection of State Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment and Protection Chinese Academy of Forestry Beijing China
| | - Sifan Shen
- Key Laboratory of Forest Protection of State Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment and Protection Chinese Academy of Forestry Beijing China
| | - Jiong Peng
- Nextomics Biosciences Institute Wuhan China
| | - Xin Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health College of Plant Protection China Agricultural University Beijing China
| | - Xiangbo Kong
- Key Laboratory of Forest Protection of State Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment and Protection Chinese Academy of Forestry Beijing China
| | | | - Fu Liu
- Key Laboratory of Forest Protection of State Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment and Protection Chinese Academy of Forestry Beijing China
| | | | - Shuai Zhan
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai China
| | - Yongping Huang
- CAS Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai China
| | - Aibing Zhang
- College of Life Sciences Capital Normal University Beijing China
| | - Zhen Zhang
- Key Laboratory of Forest Protection of State Forestry and Grassland Administration, Research Institute of Forest Ecology, Environment and Protection Chinese Academy of Forestry Beijing China
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174
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Affiliation(s)
- Casper J van der Kooi
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, NL-9747AG Groningen, Netherlands.
| | - Jeff Ollerton
- Faculty of Arts, Science and Technology, University of Northampton, Northampton NN1 5PH, UK
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175
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Wang MQ, Li Y, Chesters D, Bruelheide H, Ma K, Guo PF, Zhou QS, Staab M, Zhu CD, Schuldt A. Host functional and phylogenetic composition rather than host diversity structure plant-herbivore networks. Mol Ecol 2020; 29:2747-2762. [PMID: 32564434 DOI: 10.1111/mec.15518] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 06/10/2020] [Indexed: 12/18/2022]
Abstract
Declining plant diversity alters ecological networks, such as plant-herbivore interactions. However, our knowledge of the potential mechanisms underlying effects of plant species loss on plant-herbivore network structure is still limited. We used DNA barcoding to identify herbivore-host plant associations along declining levels of tree diversity in a large-scale, subtropical biodiversity experiment. We tested for effects of tree species richness, host functional and phylogenetic diversity, and host functional (leaf trait) and phylogenetic composition on species, phylogenetic and network composition of herbivore communities. We found that phylogenetic host composition and related palatability/defence traits but not tree species richness significantly affected herbivore communities and interaction network complexity at both the species and community levels. Our study indicates that evolutionary dependencies and functional traits of host plants determine the composition of higher trophic levels and corresponding interaction networks in species-rich ecosystems. Our findings highlight that characteristics of the species lost have effects on ecosystem structure and functioning across trophic levels that cannot be predicted from mere reductions in species richness.
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Affiliation(s)
- Ming-Qiang Wang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Forest Nature Conservation, Georg-August-University Goettingen, Goettingen, Germany
| | - Yi Li
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Douglas Chesters
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Helge Bruelheide
- Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Halle, Germany.,German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
| | - Keping Ma
- Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Peng-Fei Guo
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,College of Plant Protection, Yunnan Agricultural University, Kunming, China
| | - Qing-Song Zhou
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Michael Staab
- Nature Conservation and Landscape Ecology, University of Freiburg, Freiburg, Germany
| | - Chao-Dong Zhu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Integrated Pest Management, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Andreas Schuldt
- Forest Nature Conservation, Georg-August-University Goettingen, Goettingen, Germany
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176
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Fenner J, Benson C, Rodriguez-Caro L, Ren A, Papa R, Martin A, Hoffmann F, Range R, Counterman BA. Wnt Genes in Wing Pattern Development of Coliadinae Butterflies. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.00197] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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177
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Wiemers M, Chazot N, Wheat CW, Schweiger O, Wahlberg N. A complete time-calibrated multi-gene phylogeny of the European butterflies. Zookeys 2020; 938:97-124. [PMID: 32550787 PMCID: PMC7289901 DOI: 10.3897/zookeys.938.50878] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/03/2020] [Indexed: 11/12/2022] Open
Abstract
With the aim of supporting ecological analyses in butterflies, the third most species-rich superfamily of Lepidoptera, this paper presents the first time-calibrated phylogeny of all 496 extant butterfly species in Europe, including 18 very localised endemics for which no public DNA sequences had been available previously. It is based on a concatenated alignment of the mitochondrial gene COI and up to eleven nuclear gene fragments, using Bayesian inferences of phylogeny. To avoid analytical biases that could result from our region-focussed sampling, our European tree was grafted upon a global genus-level backbone butterfly phylogeny for analyses. In addition to a consensus tree, the posterior distribution of trees and the fully concatenated alignment are provided for future analyses. Altogether a complete phylogenetic framework of European butterflies for use by the ecological and evolutionary communities is presented.
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Affiliation(s)
- Martin Wiemers
- Senckenberg Deutsches Entomologisches Institut, Eberswalder Straße 90, 15374, Müncheberg, Germany UFZ - Helmholtz Centre for Environmental Research Halle Germany.,UFZ - Helmholtz Centre for Environmental Research, Department of Community Ecology, Theodor-Lieser-Str. 4, 06120, Halle, Germany Senckenberg Deutsches Entomologisches Institut Müncheberg Germany
| | - Nicolas Chazot
- Department of Biology, Lund University, 22362, Lund, Sweden Lund University Lund Sweden.,Department of Biological and Environmental Sciences, University of Gothenburg, Box 461, 405 30, Gothenburg, Sweden University of Gothenburg Gothenburg Sweden.,Gothenburg Global Biodiversity Centre, Box 461, 405 30, Gothenburg, Sweden Gothenburg Global Biodiversity Centre Gothenburg Sweden
| | - Christopher W Wheat
- Department of Zoology, Stockholm University, 10691, Stockholm, Sweden Stockholm University Stockholm Sweden
| | - Oliver Schweiger
- UFZ - Helmholtz Centre for Environmental Research, Department of Community Ecology, Theodor-Lieser-Str. 4, 06120, Halle, Germany Senckenberg Deutsches Entomologisches Institut Müncheberg Germany
| | - Niklas Wahlberg
- Department of Biology, Lund University, 22362, Lund, Sweden Lund University Lund Sweden
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178
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Wong TKF, Kalyaanamoorthy S, Meusemann K, Yeates DK, Misof B, Jermiin LS. A minimum reporting standard for multiple sequence alignments. NAR Genom Bioinform 2020; 2:lqaa024. [PMID: 33575581 PMCID: PMC7671350 DOI: 10.1093/nargab/lqaa024] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 03/12/2020] [Accepted: 03/30/2020] [Indexed: 12/19/2022] Open
Abstract
Multiple sequence alignments (MSAs) play a pivotal role in studies of molecular sequence data, but nobody has developed a minimum reporting standard (MRS) to quantify the completeness of MSAs in terms of completely specified nucleotides or amino acids. We present an MRS that relies on four simple completeness metrics. The metrics are implemented in AliStat, a program developed to support the MRS. A survey of published MSAs illustrates the benefits and unprecedented transparency offered by the MRS.
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Affiliation(s)
- Thomas K F Wong
- Land & Water, CSIRO, Canberra, ACT 2601, Australia
- Research School of Biology, Australian National University, Canberra, ACT 2600, Australia
| | - Subha Kalyaanamoorthy
- Land & Water, CSIRO, Canberra, ACT 2601, Australia
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Karen Meusemann
- Australian National Insect Collection, CSIRO National Research Collections Australia, Canberra, ACT 2601, Australia
- Zoologisches Forschungsmuseum Alexander Koenig, 53113 Bonn, Germany
- Evolutionsbiologie & Ökologie, Institut für Biologie I, Albert-Ludwigs-Universität Freiburg, 79085 Freiburg im Breisgau, Germany
| | - David K Yeates
- Australian National Insect Collection, CSIRO National Research Collections Australia, Canberra, ACT 2601, Australia
| | - Bernhard Misof
- Zoologisches Forschungsmuseum Alexander Koenig, 53113 Bonn, Germany
| | - Lars S Jermiin
- Land & Water, CSIRO, Canberra, ACT 2601, Australia
- Research School of Biology, Australian National University, Canberra, ACT 2600, Australia
- School of Biology and Environmental Science, University College Dublin, Belfield, Dublin 4, Ireland
- Earth Institute, University College Dublin, Belfield, Dublin 4 Ireland
- To whom correspondence should be addressed.
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179
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Chen Q, Zhao H, Wen M, Li J, Zhou H, Wang J, Zhou Y, Liu Y, Du L, Kang H, Zhang J, Cao R, Xu X, Zhou JJ, Ren B, Wang Y. Genome of the webworm Hyphantria cunea unveils genetic adaptations supporting its rapid invasion and spread. BMC Genomics 2020; 21:242. [PMID: 32183717 PMCID: PMC7079503 DOI: 10.1186/s12864-020-6629-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 02/26/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The fall webworm Hyphantria cunea is an invasive and polyphagous defoliator pest that feeds on nearly any type of deciduous tree worldwide. The silk web of H. cunea aids its aggregating behavior, provides thermal regulation and is regarded as one of causes for its rapid spread. In addition, both chemosensory and detoxification genes are vital for host adaptation in insects. RESULTS Here, a high-quality genome of H. cunea was obtained. Silk-web-related genes were identified from the genome, and successful silencing of the silk protein gene HcunFib-H resulted in a significant decrease in silk web shelter production. The CAFE analysis showed that some chemosensory and detoxification gene families, such as CSPs, CCEs, GSTs and UGTs, were expanded. A transcriptome analysis using the newly sequenced H. cunea genome showed that most chemosensory genes were specifically expressed in the antennae, while most detoxification genes were highly expressed during the feeding peak. Moreover, we found that many nutrient-related genes and one detoxification gene, HcunP450 (CYP306A1), were under significant positive selection, suggesting a crucial role of these genes in host adaptation in H. cunea. At the metagenomic level, several microbial communities in H. cunea gut and their metabolic pathways might be beneficial to H. cunea for nutrient metabolism and detoxification, and might also contribute to its host adaptation. CONCLUSIONS These findings explain the host and environmental adaptations of H. cunea at the genetic level and provide partial evidence for the cause of its rapid invasion and potential gene targets for innovative pest management strategies.
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Affiliation(s)
- Qi Chen
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
| | - Hanbo Zhao
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
| | - Ming Wen
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
| | - Jiaxin Li
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
| | - Haifeng Zhou
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
| | - Jiatong Wang
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
| | - Yuxin Zhou
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
| | - Yulin Liu
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
| | - Lixin Du
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
| | - Hui Kang
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
| | - Jian Zhang
- School of Life Sciences, Changchun Normal University, Changchun, Jilin, China
| | - Rui Cao
- Meihekou Forest Pest Control Station, Changchun, Jilin, China
| | - Xiaoming Xu
- Garden and Plant Protection Station of Changchun, Changchun, Jilin, China
| | - Jing-Jiang Zhou
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
- Rothamsted Research, Harpenden, AL5 2JQ, UK
| | - Bingzhong Ren
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China
| | - Yinliang Wang
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, Jilin, China.
- Key Laboratory of Vegetation Ecology, MOE, Northeast Normal University, Changchun, China.
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180
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Toussaint EFA, Warren AD. A review of red-eye pigmentation and diel activity patterns in skippers (Lepidoptera, Papilionoidea, Hesperiidae). J NAT HIST 2019. [DOI: 10.1080/00222933.2019.1692090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Andrew D. Warren
- Florida Museum of Natural History, University of Florida, Gainesville, FL, USA
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181
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Abstract
Lepidoptera play key roles in many biological systems. Butterflies are hypothesized to have evolved contemporaneously with flowering plants, and moths are thought to have gained anti-bat defenses in response to echolocating predatory bats, but these hypotheses have largely gone untested. Using a transcriptomic, dated evolutionary tree of Lepidoptera, we demonstrate that the most recent common ancestor of Lepidoptera is considerably older than previously hypothesized. The oldest moths in crown Lepidoptera were present in the Carboniferous, some 300 million years ago, and began to diversify largely in synchrony with angiosperms. We show that multiple lineages of moths independently evolved hearing organs well before the origin of bats, rejecting the hypothesis that lepidopteran hearing organs arose in response to these predators. Butterflies and moths (Lepidoptera) are one of the major superradiations of insects, comprising nearly 160,000 described extant species. As herbivores, pollinators, and prey, Lepidoptera play a fundamental role in almost every terrestrial ecosystem. Lepidoptera are also indicators of environmental change and serve as models for research on mimicry and genetics. They have been central to the development of coevolutionary hypotheses, such as butterflies with flowering plants and moths’ evolutionary arms race with echolocating bats. However, these hypotheses have not been rigorously tested, because a robust lepidopteran phylogeny and timing of evolutionary novelties are lacking. To address these issues, we inferred a comprehensive phylogeny of Lepidoptera, using the largest dataset assembled for the order (2,098 orthologous protein-coding genes from transcriptomes of 186 species, representing nearly all superfamilies), and dated it with carefully evaluated synapomorphy-based fossils. The oldest members of the Lepidoptera crown group appeared in the Late Carboniferous (∼300 Ma) and fed on nonvascular land plants. Lepidoptera evolved the tube-like proboscis in the Middle Triassic (∼241 Ma), which allowed them to acquire nectar from flowering plants. This morphological innovation, along with other traits, likely promoted the extraordinary diversification of superfamily-level lepidopteran crown groups. The ancestor of butterflies was likely nocturnal, and our results indicate that butterflies became day-flying in the Late Cretaceous (∼98 Ma). Moth hearing organs arose multiple times before the evolutionary arms race between moths and bats, perhaps initially detecting a wide range of sound frequencies before being co-opted to specifically detect bat sonar. Our study provides an essential framework for future comparative studies on butterfly and moth evolution.
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182
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Sourakov A. Emperors, admirals and giants, zebras, tigers and woolly bears: casting a broader net in exploring heparin effects on Lepidoptera wing patterns. F1000Res 2018; 7:1842. [PMID: 33335710 PMCID: PMC7722536 DOI: 10.12688/f1000research.16926.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/26/2020] [Indexed: 11/20/2022] Open
Abstract
Background: Studies of heparin effects on Lepidoptera wing patterns have been restricted to a small number of species. I report observations from experiments on a broader range of taxa, including first results from swallowtails, tiger moths and microlepidoptera. Methods: Heparin injections were made in prepupae and pupae of Junonia coenia (common buckeyes), Agraulis vanillae (gulf fritillaries), Heliconius charithonia (zebra longwings), Asterocampa clyton (tawny emperors) , Danaus plexippus (monarchs), Vanessa atalanta (red admirals); Heraclides cresphontes (giant swallowtails), Pterourus troilus (spicebush swallowtails), Protographium marcellus (zebra swallowtails), Battus polydamas (polydamas swallowtails); Hypercompe scribonia (giant leopard moths), Estigmene acrea (acrea moths), Hyphantria cunea (fall webworm moths) , Utetheisa ornatrix (ornate bella moths); Glyphodes sibillalis (mulberry leaftier). Results: Heparin sometimes altered the entire pattern in a dramatic way, sometimes caused changes locally. In buckeyes, the previous heparin study conducted on pupae was compared to injections made at a prepupal stage. In gulf fritillaries, zebra longwings and tawny emperors, the dramatic changes occurred throughout their wings, while in monarchs, changes were restricted to wing margins. Changes achieved in red admirals, show that heparin action is unrelated to the original color. In swallowtails, transformations were restricted to border system, indicating higher levels of stability and compartmentalization of wing patterns. In mulberry leaftier, changes were restricted to the marginal bands. In tiger moths, elongation of black markings led to merging of spots; in the ornate bella moth, it was accompanied by an expansion of the surrounding white bands, and results were compared to the effects of colder temperatures. Conclusions: Using pharmaceutical intervention demonstrates that there are many similarities and some very significant differences in the ways wing patterns are formed in different Lepidoptera lineages. By creating a range of variation one can demonstrate how one pattern can easily evolve into another, aiding in understanding of speciation and adaptation processes.
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Affiliation(s)
- Andrei Sourakov
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History, University of Florida, Gainesville, Florida, 32611, USA
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183
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Sourakov A. Leopards and giants, tigers and woolly bears: casting a broader net in exploring heparin effects on Lepidoptera wing patterns. F1000Res 2018; 7:1842. [PMID: 33335710 PMCID: PMC7722536 DOI: 10.12688/f1000research.16926.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/19/2018] [Indexed: 03/31/2024] Open
Abstract
Background: Studies of heparin effects on Lepidoptera wing patterns have been restricted to a small number of species. I report observations from experiments on a broader range of taxa, including first results from swallowtails, tiger moths and microlepidoptera. Methods: Heparin injections were made in prepupal and early pupal stages of the following species representing several Lepidoptera lineages: Junonia coenia, Agraulis vanillae, Asterocampa clyton (Nymphalidae); Heraclides cresphontes, Pterourus troilus, Eurytides marcellus (Papilionidae); Hypercompe scribonia, Estigmene acrea, Hyphantria cunea (Erebidae); and Glyphodes sibillalis (Crambidae). Heparin-induced changes in wing pattern are illustrated, and advantages of using prepupal vs. pupal stages for this type of pharmacological manipulation of wing patterns are discussed. Results: In buckeyes, heparin-induced changes consisted of loss of orange parafocal elements as marginal and submarginal bands shifted basally. In gulf fritillaries, changes in black and silver markings were similar to those found in wild aberrant individuals. In tawny emperor, intermediate and extreme levels of transformation were achieved, pointing to homology of this species' unusual eyespots to those of other nymphalids. In swallowtails, heparin-induced changes were much more restricted and proved harder to achieve, possibly indicating higher levels of stability and compartmentalization of wing patterns in this butterfly family. In tiger moths, elongation of black markings occurred so that normally distinct spots sometimes merged; in leopard moth, these changes were restricted to areas adjacent to discal spot. In pyraloid moth, changes were mostly restricted to expansion of wing marginal bands and hindwing border. Conclusions: Variation in wing pattern response to heparin found between different species and families in this study warrants further taxonomic widening of exploration of wing pattern formation mechanisms in Lepidoptera. While there are many similarities, there also seem to be very significant differences in the ways wing patterns are formed in different families of butterflies and moths.
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Affiliation(s)
- Andrei Sourakov
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History, University of Florida, Gainesville, Florida, 32611, USA
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184
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Sourakov A. Emperors, admirals and giants, zebras, tigers and woolly bears: casting a broader net in exploring heparin effects on Lepidoptera wing patterns. F1000Res 2018; 7:1842. [PMID: 33335710 PMCID: PMC7722536 DOI: 10.12688/f1000research.16926.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/02/2020] [Indexed: 03/31/2024] Open
Abstract
Background: Studies of heparin effects on Lepidoptera wing patterns have been restricted to a small number of species. I report observations from experiments on a broader range of taxa, including first results from swallowtails, tiger moths and microlepidoptera. Methods: Heparin injections were made in prepupae and pupae of Junonia coenia (common buckeyes), Agraulis vanillae (gulf fritillaries), Heliconius charithonia (zebra longwings), Asterocampa clyton (tawny emperors) , Danaus plexippus (monarchs), Vanessa atalanta (red admirals); Heraclides cresphontes (giant swallowtails), Pterourus troilus (spicebush swallowtails), Protographium marcellus (zebra swallowtails), Battus polydamas (polydamas swallowtails); Hypercompe scribonia (giant leopard moths), Estigmene acrea (acrea moths), Hyphantria cunea (fall webworm moths) , Utetheisa ornatrix (ornate bella moths); Glyphodes sibillalis (mulberry leaftier). Results: Heparin sometimes altered the entire pattern in a dramatic way, sometimes caused changes locally. In buckeyes, the previous heparin study conducted on pupae was compared to injections made at a prepupal stage. In gulf fritillaries, zebra longwings and tawny emperors, the dramatic changes occurred throughout their wings, while in monarchs, changes were restricted to wing margins. Changes achieved in red admirals, show that heparin action is unrelated to the original color. In swallowtails, transformations were restricted to border system, indicating higher levels of stability and compartmentalization of wing patterns. In mulberry leaftier, changes were restricted to the marginal bands. In tiger moths, elongation of black markings led to merging of spots; in the ornate bella moth, it was accompanied by an expansion of the surrounding white bands, and results were compared to the effects of colder temperatures. Conclusions: Using pharmaceutical intervention demonstrates that there are many similarities and some very significant differences in the ways wing patterns are formed in different Lepidoptera lineages. By creating a range of variation one can demonstrate how one pattern can easily evolve into another, aiding in understanding of speciation and adaptation processes.
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Affiliation(s)
- Andrei Sourakov
- McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History, University of Florida, Gainesville, Florida, 32611, USA
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