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Cortés-Carrasco F, Elías-Gutiérrez M, García-Madrigal MDS. Holothuriophilus trapeziformis Nauck, 1880 (Decapoda: Pinnotheridae) from the Pacific coast of Mexico: taxonomic revision based on integrative taxonomy. PeerJ 2022; 10:e12774. [PMID: 35228905 PMCID: PMC8881913 DOI: 10.7717/peerj.12774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 12/20/2021] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Holothuriophilus trapeziformis Nauck, 1880 is a holothurian-dweller pinnotherid crab representing one of the two species of the genus distributed along the Pacific coast of Mexico and Chile, respectively. While the parasitic ecological interaction with its host is well established, the morphology of the male remains unknown, and DNA information for the species is not available. Furthermore, the only morphological trait separating both species of the genus is subjective and corresponds to the presence or absence of a gap between the fingers of the chelae. Our goal is to complete and clarify the taxonomic status of H. trapeziformis and describe the male morphology with the use of the integrative taxonomy, providing additional characters to differentiate this species. METHODS We collected new biological material in the Pacific coast of Mexico including the topotypes. We also reviewed material from national collections to integrate morphology (based on a complete and detailed description and illustration of the species using light microscopy), ecological data (based on the identification of the host and the place where it was located within the host), and the mtCOI gene information (commonly known as DNA barcode) to differentiate Holothuriophilus trapeziformis from other related crabs. RESULTS This species presents marked sexual dimorphism only in the primary sexual characters. For the first time we describe morphological variability of traditionally stable characters. In addition to the gap between the fingers of the chelae, Holothuriophilus trapeziformis differs from H. pacificus (Poeppig, 1836) by their ornamentation, the shape of the male abdomen, and the gonopod. Cytocrome Oxidase 1 gene (COI) distance divergence was >3% between both Holothuriophilus species forming a clear clade. DNA barcoding indicates only one taxon, with a maximum divergence of 2.2%. All the specimens have the same Barcode Index Number (BIN; BOLD: ADE9974). All the hosts for H. trapeziformis were identified as Holothuria (Halodeima) inornata Semper, 1868; the presence of the crab in the host's coelomic cavity was confirmed, and for the first time we found it within the intestine. The geographical distribution is the Pacific coast of Mexico. Based on the data presented here, the taxonomic status of Holothuriophilus trapeziformis is now complete.
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Affiliation(s)
- Fernando Cortés-Carrasco
- Departamento de Sistemática y Ecología Acuática, El Colegio de la Frontera Sur Unidad Chetumal, Chetumal, Mexico
| | - Manuel Elías-Gutiérrez
- Departamento de Sistemática y Ecología Acuática, El Colegio de la Frontera Sur, Chetumal, Quintana Roo, Mexico
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Host-associated morphological convergence in symbiotic pea crabs. Evol Ecol 2022. [DOI: 10.1007/s10682-022-10153-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Molecular characterization and phylogenetic analysis of crabs (Crustacea: Decapoda: Brachyura) based on mitochondrial COI and 16S rRNA genes. CONSERV GENET RESOUR 2021. [DOI: 10.1007/s12686-021-01212-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Jossart Q, De Ridder C, Lessios HA, Bauwens M, Motreuil S, Rigaud T, Wattier RA, David B. Highly contrasted population genetic structures in a host-parasite pair in the Caribbean Sea. Ecol Evol 2017; 7:9267-9280. [PMID: 29187967 PMCID: PMC5696394 DOI: 10.1002/ece3.3413] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 07/26/2017] [Accepted: 08/19/2017] [Indexed: 01/05/2023] Open
Abstract
Evolution and population genetic structure of marine species across the Caribbean Sea are shaped by two complex factors: the geological history and the present pattern of marine currents. Characterizing and comparing the genetic structures of codistributed species, such as host-parasite associations, allow discriminating the relative importance of environmental factors and life history traits that influenced gene flow and demographic events. Using microsatellite and Cytochrome Oxidase I markers, we investigated if a host-parasite pair (the heart urchin Meoma ventricosa and its parasitic pea crab Dissodactylus primitivus) exhibits comparable population genetic structures in the Caribbean Sea and how the observed patterns match connectivity regions from predictive models and other taxa. Highly contrasting patterns were found: the host showed genetic homogeneity across the whole studied area, whereas the parasite displayed significant differentiation at regional and local scales. The genetic diversity of the parasitic crabs (both in microsatellites and COI) was distributed in two main groups, Panama-Jamaica-St Croix on the one hand, and the South-Eastern Caribbean on the other. At a smaller geographical scale, Panamanian and Jamaican parasite populations were genetically more similar, while more genetic differentiation was found within the Lesser Antilles. Both species showed a signature of population expansion during the Quaternary. Some results match predictive models or data from previous studies (e.g., the Western-Eastern dichotomy in the parasite) while others do not (e.g., genetic differentiation within the Lesser Antilles). The sharp dissimilarity of genetic structure of these codistributed species outlines the importance of population expansion events and/or contrasted patterns of gene flow. This might be linked to differences in several life history traits such as fecundity (higher for the host), swimming capacity of larval stages (higher for the parasite), and habitat availability (higher for the host).
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Affiliation(s)
- Quentin Jossart
- Département de Biologie des OrganismesLaboratoire de Biologie MarineUniversité Libre de Bruxelles (ULB)BrusselsBelgium
- BiogéosciencesUMR CNRS 6282Université de Bourgogne Franche‐Comté (UBFC)DijonFrance
| | - Chantal De Ridder
- Département de Biologie des OrganismesLaboratoire de Biologie MarineUniversité Libre de Bruxelles (ULB)BrusselsBelgium
| | | | - Mathieu Bauwens
- Département de Biologie des OrganismesLaboratoire de Biologie MarineUniversité Libre de Bruxelles (ULB)BrusselsBelgium
| | - Sébastien Motreuil
- BiogéosciencesUMR CNRS 6282Université de Bourgogne Franche‐Comté (UBFC)DijonFrance
| | - Thierry Rigaud
- BiogéosciencesUMR CNRS 6282Université de Bourgogne Franche‐Comté (UBFC)DijonFrance
| | - Rémi A. Wattier
- BiogéosciencesUMR CNRS 6282Université de Bourgogne Franche‐Comté (UBFC)DijonFrance
| | - Bruno David
- BiogéosciencesUMR CNRS 6282Université de Bourgogne Franche‐Comté (UBFC)DijonFrance
- Museum National d'Histoire Naturelle (MNHN)ParisFrance
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Ocampo EH, Spivak ED, Baeza JA, Luppi TA. Ontogenetic changes in the external anatomy of the parasitic castrator crab Calyptraeotheres garthi: implications for the timing of host colonization and sexual behaviour. Biol J Linn Soc Lond 2016. [DOI: 10.1111/bij.12854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emiliano H. Ocampo
- Instituto de Investigaciones Marinas y Costeras (IIMyC); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Universidad Nacional de Mar del Plata; Funes 3350, Mar del Plata Argentina
| | - Eduardo D. Spivak
- Instituto de Investigaciones Marinas y Costeras (IIMyC); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Universidad Nacional de Mar del Plata; Funes 3350, Mar del Plata Argentina
| | - J. Antonio Baeza
- Department of Biological Sciences; Clemson University; 132 Long Hall, Clemson SC 29634 USA
- Smithsonian Marine Station at Fort Pierce; 701 Seaway Drive, Fort Pierce FL 34949 USA
- Departamento de Biología Marina; Facultad de Ciencias del Mar; Universidad Católica del Norte; Larrondo 1281 Coquimbo Chile
| | - Tomás A. Luppi
- Instituto de Investigaciones Marinas y Costeras (IIMyC); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Universidad Nacional de Mar del Plata; Funes 3350, Mar del Plata Argentina
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Magalhães T, Robles R, Felder DL, Mantelatto FL. Integrative Taxonomic Study of the Purse Crab Genus Persephona Leach, 1817 (Brachyura: Leucosiidae): Combining Morphology and Molecular Data. PLoS One 2016; 11:e0152627. [PMID: 27099956 PMCID: PMC4839676 DOI: 10.1371/journal.pone.0152627] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 03/16/2016] [Indexed: 11/18/2022] Open
Abstract
Marine crabs of the genus Persephona Leach, 1817 are restricted to American waters of the western Atlantic and eastern Pacific Oceans. Subfamilial assignment of this taxon has varied between authors and its species composition remain in question. We conducted a comparative study based on morphology and molecular phylogenetics for all ten recognized species of Persephona, along with Iliacantha hancocki. We tested whether Persephona finneganae, P. lichtensteinii, and P. crinita represent a single species as suggested by some authors; whether specimens identified as P. punctata, P. mediterranea, and P. aquilonaris warrant treatment as separate species; and whether I. hancocki should be regarded as a junior synonym of P. subovata. Diagnostic morphological characters (of the carapace, chelipeds, and third maxillipeds) were used along with gonopod (male first pleopod 1) features and live coloration. The 16S rRNA and the Cytochrome Oxidase I (COI) (DNA barcoding) mitochondrial genes were used as molecular markers. Both morphological and molecular analyses revealed that putative specimens of P. crinita from Brazil and those assigned to P. finneganae were no different from specimens presently assignable to P. lichtensteinii. P. finneganae is regarded as a junior synonym of P. lichtensteinii, and we apply P. crinita only to specimens we examined from the Gulf of Mexico. Specimens from Brazil previously reported as P. crinita are herewith concluded to represent P. lichtensteinii. Additionally, P. townsendi is a junior synonym of P. orbicularis, Iliacantha hancocki is concluded to be a junior synonym of P. subovata, while P. aquilonaris and P. mediterranea are found to represent separate species. On the basis of our revisions, eight species of Persephona are considered valid, and the reported distribution for P. crinita is restricted.
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Affiliation(s)
- Tatiana Magalhães
- Laboratório de Bioecologia e Sistemática de Crustáceos (LBSC), Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP), Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Rafael Robles
- Laboratório de Bioecologia e Sistemática de Crustáceos (LBSC), Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP), Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Darryl L. Felder
- Department of Biology, University of Louisiana at Lafayette, Lafayette, Louisiana, United States of America
| | - Fernando L. Mantelatto
- Laboratório de Bioecologia e Sistemática de Crustáceos (LBSC), Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP), Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
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Brandão MC, Freire AS, Burton RS. Estimating diversity of crabs (Decapoda: Brachyura) in a no-take marine protected area of the SW Atlantic coast through DNA barcoding of larvae. SYST BIODIVERS 2016. [DOI: 10.1080/14772000.2016.1140245] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Palacios Theil E, Cuesta JA, Felder DL. Molecular evidence for non-monophyly of the pinnotheroid crabs (Crustacea : Brachyura : Pinnotheroidea), warranting taxonomic reappraisal. INVERTEBR SYST 2016. [DOI: 10.1071/is15023] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The crabs of the family Pinnotheridae are well known as commensals or parasites, mainly of molluscs and tubeworms. The phylogeny of the group, however, is poorly understood, with preliminary morphological and molecular studies questioning its monophyly. Here we used molecular genetic markers (16S, 12S mitochondrial; histone 3 nuclear) to infer a phylogeny for the family Pinnotheridae De Haan, 1833 to reevaluate the phylogeny and systematics at the level of its subfamilies and genera. Our molecular phylogeny indicated that Parapinnixa cortesi Thoma, Heard, & Vargas, 2005, Parapinnixa hendersoni Rathbun, 1918, Pinnotherelia laevigata H. Milne Edwards & Lucas, 1844, Sakaina yokoyai (Glassell, 1933), Tetrias fischerii (A. Milne-Edwards, 1867) and Tetrias scabripes Rathbun, 1898 should be removed from the family Pinnotheridae, while composition of the present subfamilies, Pinnotherinae De Haan, 1833 and Pinnothereliinae Alcock, 1900, must be revised. At generic level, Clypeasterophilus Campos, 1990, Dissodactylus Smith, 1870, Fabia Dana, 1851, Nepinnotheres Manning, 1993 and Pinnixa White, 1846 were not monophyletic in our analyses. With the exclusion of Pinnotherelia from Pinnotheridae, remaining species of Pinnothereliinae are assigned to Pinnixinae Števčić, 2005, a new subfamily based upon revision and elevation of rank for the tribe Pinnixini Števčić, 2005. In addition, we restructure membership of the subfamily Pinnotherinae and propose Pinnixulalinae, subfam. nov. to accommodate species that were excluded by molecular analyses from the other two subfamilies. These have a firm, wider-than-long carapace with clearly defined regions, strong legs that are usually tuberculate and very setose, and a third maxilliped with an elongate ischiomerus in which the ischium and merus may or may not be indistinguishably fused. Our analyses included 169 pinnotherid exemplars, representing almost half of the genera and about a quarter of the species presently recognised for the family. The relationships within and among some taxa are resolved to greater or lesser extent and the phylogenetic biodiversity of pinnotherid crabs is revealed. However, future publications will most likely result in a further increase in the number of taxa.
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Ceballos SG, Lessa EP, Licandeo R, Fernández DA. Genetic relationships between Atlantic and Pacific populations of the notothenioid fish Eleginops maclovinus: the footprints of Quaternary glaciations in Patagonia. Heredity (Edinb) 2015; 116:372-7. [PMID: 26696136 DOI: 10.1038/hdy.2015.106] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 10/14/2015] [Accepted: 10/19/2015] [Indexed: 11/09/2022] Open
Abstract
The genetic relationships between the Pacific and the Atlantic populations of marine coastal biota in Southern South America have been analyzed in few studies, most of them relying on a single mitochondrial locus. We analyzed 10 polymorphic microsatellite loci, isolated from a dinucleotide-enriched Eleginops maclovinus genomic library, in a total of 240 individuals (48 from each of 5 sampled sites: 2 Atlantic, 2 Pacific and 1 in Beagle Channel). The results were contrasted against a previous work on the same species with mitochondrial DNA (mtDNA). Observed heterozygosity within localities ranged from 0.85 to 0.88 with the highest overall number of alleles observed at the northernmost locality on the Pacific side (Concepción), but no clear geographic pattern arose from the data. On the other hand, the number of private alleles was negatively correlated with latitude (Spearman's rs test, P=0.017). Among-population variance was low but significant (1.35%; P<0.0001, analysis of molecular variance (AMOVA)) and low genetic differentiation between populations was observed (pairwise FST values ranged from 0 to 0.021). A Mantel test revealed a significant correlation between geographic distances and FST (r=0.56, P=0.047). This could be partially accounted by the Atlantic versus Pacific population differentiation detected in three different analyses (STRUCTURE, SAMOVA (Spatial Analysis of MOlecular VAriance) and a population phylogeny). The observed pattern is compatible with a history of separation into two glacial refugia that was better captured by the multilocus microsatellite data than by the mtDNA analysis.
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Affiliation(s)
- S G Ceballos
- Centro Austral de Investigaciones Científicas (CADIC), Ushuaia, Argentina.,Universidad Nacional de Tierra del Fuego (UNTDF), Ushuaia, Argentina
| | - E P Lessa
- Departamento de Ecología y Evolución, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - R Licandeo
- Institute for the Oceans and Fisheries University of British Columbia, Vancouver, British Columbia, Canada
| | - D A Fernández
- Centro Austral de Investigaciones Científicas (CADIC), Ushuaia, Argentina.,Universidad Nacional de Tierra del Fuego (UNTDF), Ushuaia, Argentina
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Pérez-Barros P, Confalonieri VA, Paschke K, Lovrich GA. Incongruence between molecular and morphological characters in the southern king crabs Lithodes santolla and Lithodes confundens (Decapoda: Anomura). Polar Biol 2015. [DOI: 10.1007/s00300-015-1770-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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