Characterization of a Y‐Specific Duplication/Insertion of the Anti
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Received: 1 September 2019 | Revised: 20 December 2019 | Accepted: 24 December 2019 DOI: 10.1111/1755-0998.13133 RESOURCE ARTICLE Characterization of a Y-specific duplication/insertion of the anti-Mullerian hormone type II receptor gene based on a chromosome-scale genome assembly of yellow perch, Perca flavescens Romain Feron1,2 | Margot Zahm3 | Cédric Cabau4 | Christophe Klopp3,4 | Céline Roques5 | Olivier Bouchez5 | Camille Eché5 | Sophie Valière5 | Cécile Donnadieu5 | Pierrick Haffray6 | Anastasia Bestin6 | Romain Morvezen6 | Hervé Acloque7 | Peter T. Euclide8 | Ming Wen1,9 | Elodie Jouano1 | Manfred Schartl10,11 | John H. Postlethwait12 | Claire Schraidt13 | Mark R. Christie13,14 | Wesley A. Larson15 | Amaury Herpin1 | Yann Guiguen1 1INRAE, UR 1037 Fish Physiology and Genomics, Rennes, France 2Department of Ecology and Evolution, Swiss Institute of Bioinformatics, University of Lausanne, Lausanne, Switzerland 3Plate-forme bio-informatique Genotoul, Mathématiques et Informatique Appliquées de Toulouse, INRAE, Castanet Tolosan, France 4SIGENAE, GenPhySE, INRAE, ENVT, Université de Toulouse, Castanet Tolosan, France 5US 1426, GeT-PlaGe, INRAE, Genotoul, Castanet-Tolosan, France 6French Poultry and Aquaculture Breeders, SYSAAF, Rennes, France 7GenPhySE, INRAE, INPT, ENVT, Université de Toulouse, Castanet-Tolosan, France 8Wisconsin Cooperative Fishery Research Unit, University of Wisconsin-Stevens Point, Stevens Point, WI, USA 9State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, China 10Developmental Biochemistry, Biozentrum, University of Würzburg, Würzburg, Germany 11Department of Chemistry and Biochemistry, The Xiphophorus Genetic Stock Center, Texas State University, San Marcos, TX, USA 12Institute of Neuroscience, University of Oregon, Eugene, OR, USA 13Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, USA 14Department of Biological Sciences, Purdue University, West Lafayette, IN, USA 15U.S. Geological Survey Wisconsin Cooperative Fishery Research Unit, University of Wisconsin-Stevens Point, Stevens Point, WI, USA Correspondence Yann Guiguen, INRAE, UR 1037 Fish Abstract Physiology and Genomics, Rennes, France. Yellow perch, Perca flavescens, is an ecologically and economically important species Email: [email protected] native to a large portion of the northern United States and southern Canada and is Funding information also a promising candidate species for aquaculture. However, no yellow perch ref- National Institutes of Health, Grant/ Award Number: R01 GM085318 ; Agence erence genome has been available to facilitate improvements in both fisheries and Nationale de la Recherche, Grant/Award aquaculture management practices. By combining Oxford Nanopore Technologies Number: ANR-10-INBS-09 and ANR-13- ISV7-0005; FEAMP “Fonds européen pour long-reads, 10X Genomics Illumina short linked reads and a chromosome contact les affaires maritimes et la pêche”; Great map produced with Hi-C, we generated a high-continuity chromosome-scale yel- Lakes Fishery Commission, Grant/Award Number: 2018_CHR_44072; CRB-Anim low perch genome assembly of 877.4 Mb. It contains, in agreement with the known “Centre de Ressources Biologiques pour les diploid chromosome yellow perch count, 24 chromosome-size scaffolds covering animaux domestiques” 98.8% of the complete assembly (N50 = 37.4 Mb, L50 = 11). We also provide a first Mol Ecol Resour. 2020;20:531–543. wileyonlinelibrary.com/journal/men © 2020 John Wiley & Sons Ltd | 531 532 | FERON ET AL. characterization of the yellow perch sex determination locus that contains a male- specific duplicate of the anti-Mullerian hormone type II receptor gene (amhr2by) inserted at the proximal end of the Y chromosome (chromosome 9). Using this sex- specific information, we developed a simple PCR genotyping assay which accurately differentiates XY genetic males (amhr2by+) from XX genetic females (amhr2by−). Our high-quality genome assembly is an important genomic resource for future studies on yellow perch ecology, toxicology, fisheries and aquaculture research. In addition, characterization of the amhr2by gene as a candidate sex-determining gene in yel- low perch provides a new example of the recurrent implication of the transforming growth factor beta pathway in fish sex determination, and highlights gene duplication as an important genomic mechanism for the emergence of new master sex determina- tion genes. KEYWORDS amhr2, long-reads sequencing, sex-determination, transforming growth factor beta, whole genome sequencing, yellow perch 1 | INTRODUCTION control over their dispersal trajectories simply by varying their vertical position within the water column (Leis, 2006). As the lar- Yellow perch, Perca flavescens, is an ecologically and economically vae develop, they may also become better at swimming, such that important species native to a large portion of the northern United a combination of active and passive dispersal strategies may ulti- States and southern Canada. In the Laurentian Great Lakes, yellow mately dictate where individual yellow perch are located when they perch, have bipartite life cycles that include a prolonged dispersive transition to a demersal life stage. larval stage. Identifying patterns of population connectivity and local Yellow perch also support recreational and commercial fisheries adaptation in yellow perch may provide important insights not only and are a major component of the food web in many inland lakes, where for the important yellow perch fishery, but also for a wide variety of they are often the most abundant prey for larger species such as wall- Great Lakes fishes with similar life histories (e.g., walleye). Relevant eye (Sander vitreus), northern pike (Esox lucius), muskellunge (Esox mas- life history characteristics for Great Lakes yellow perch populations quinongy) and lake trout (Salvelinus namaycush) (Becker, 1983). In the include: a pelagic larval duration of 30–40 days (Dettmers, Janssen, Laurentian Great Lakes, yellow perch are an important native species Pientka, Fulford, & Jude, 2005; Whiteside, Swindoll, & Doolittle, that have been heavily impacted by fishing pressure and environmental 1985), high fecundity (~10,000–150,000 eggs per female), high changes over the last century (Baldwin, Saalfeld, Dochoda, Buettner, & larval and juvenile mortality, and the potential for large population Eshenroder, 2009; Evans, 1986). Historically, yellow perch supported sizes—all characteristics shared with marine fishes (Brazo, Tack, & both commercial and recreational fisheries throughout the Great Lakes Liston, 1975; Forney, 1971; Ludsin, DeVanna, & Smith, 2014; Pritt, region. In Lake Michigan alone, the annual commercial harvest has Roseman, & O'Brien, 2014). Adult yellow perch have modest home been as high as 5.8 million lbs. (in 1964; Baldwin et al., 2009) repre- ranges and mark–recapture studies have demonstrated that most senting nearly US$16 million in dockside value and much more in retail adult yellow perch and their congener, Eurasian perch (Perca fluvi- value. Moreover, yellow perch is consistently among the most valu- atilis), have relatively high site fidelity, particularly with respect to able commercially harvested fish species in the Great Lakes ($2.64/ spawning grounds (Bergek & Björklund, 2009; Böhling & Lehtonen, lb. dockside value in 2000; Kinnunen, 2003), with fillets selling for as 1984; Glover, Dettmers, Wahl, & Clapp, 2008; Schneeberger, 2000). much as $12/lb. However, beginning in the late 1900s, yellow perch Female yellow perch lay their eggs in large gelatinous mats, known as populations in Lake Michigan collapsed, suffering from consistently skeins, which are often found entangled in plant material and woody poor recruitment, interactions with invasive species such as alewife debris or attached to rocky outcrops (Robillard & Marsden, 2001). (Alosa pseudoharengus) and over-harvest (Marsden & Robillard, 2004; The duration of egg development in skeins is temperature-depen- Wilberg, Bence, Eggold, Makauskas, & Clapp, 2005). In response, com- dent and is thought to be ~15–20 days in Lake Michigan. Embryos mercial harvest was closed in the main basin of Lake Michigan in 1997 subsequently hatch into minuscule larvae that are likely, at least and recreational limits were tightened, but abundance and recruitment early in their lives, to disperse passively in the currents (Beletsky et have not recovered (Clapp & Dettmers, 2004). The population history al., 2007; Höök, McCormick, Rutherford, Mason, & Carter, 2006). of yellow perch in the Great Lakes makes them an excellent system Similar to many marine fishes, yellow perch larvae may have some to investigate the genetic basis of fisheries-induced evolution (FIE) FERON ET AL. | 533 as well as the genetic impacts of overfishing, both topics with broad in other ecologically and commercially important percid fishes, such importance for global food security. Previous research in other spe- as walleye), allowing, for example, transcriptome sequences to be an- cies has utilized a meta-analysis approach to demonstrate that fishing chored, facilitating important studies related to aquaculture and adap- pressure can reduce genetic diversity (Hauser, Adcock, Smith, Ramírez, tation to thermally challenging habitats in that species. & Carvalho, 2002; Pinsky & Palumbi, 2014) and analysed laboratory crosses to determine whether FIE can induce substantial divergence at the genomic and phenotypic levels (Nina