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Mantelatto FL, Pileggi LG, Pantaleão JAF, Magalhães C, Villalobos JL, Álvarez F. Multigene phylogeny and taxonomic revision of American shrimps of the genus Cryphiops Dana, 1852 (Decapoda, Palaemonidae) implies a proposal for reversal of precedence with Macrobrachium Spence Bate, 1868. Zookeys 2021; 1047:155-198. [PMID: 34267596 PMCID: PMC8266795 DOI: 10.3897/zookeys.1047.66933] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 05/15/2021] [Indexed: 11/12/2022] Open
Abstract
The freshwater shrimp genus Cryphiops Dana, 1852 has a disjunct distribution in North (Mexico) and South (Brazil, Chile) America, and is composed of only six species. The current classification of genera in the Palaemonidae is controversial, based on variable morphological characters, and still far from a clear definition. Cryphiops differs from the speciose genus Macrobrachium Spence Bate, 1868 only by the absence of the hepatic spines on the carapace. Previous studies with a limited dataset suggested the necessity to link morphology and phylogeny to create an internal rearrangement in the genus to resolve the paraphyletic status. Through a molecular phylogenetic approach, the evolutionary relationships are inferred based on four (mitochondrial and nuclear) genes, among all recognized species of Cryphiops and, in combination with a taxonomic revision, a rearrangement in the systematics of the genus is suggested. The absence of hepatic spines on the carapace, the only character used to separate the genus Cryphiops, is subjective and should be considered as a homoplasy. This implies that Cryphiops and Macrobrachium are subjective synonyms and, because the latter genus is much more diverse and widely known, with several economically important species, to avoid confusion and disturbance in nomenclatural stability and keep universality, a proposal for the priority of the older synonym (Cryphiops) to be partially suppressed in favor of maintaining the prevailing use of the younger synonym (Macrobrachium) is presented. As the species of Cryphiops should be accommodated in the genus Macrobrachium, new names to replace three preoccupied specific names that, by this action, resulted to be secondary homonyms are offered.
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Affiliation(s)
- 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 Universidade de São Paulo São Paulo Brazil
| | - Leonardo G Pileggi
- 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 Universidade de São Paulo São Paulo Brazil
| | - João A F Pantaleão
- 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 Universidade de São Paulo São Paulo Brazil
| | - Célio 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 Universidade de São Paulo São Paulo Brazil.,Instituto Nacional de Pesquisas da Amazônia (INPA) (Retired), Manaus, Amazonas, Brazil Instituto Nacional de Pesquisas da Amazônia Amazonas Brazil
| | - José Luis Villalobos
- Colección Nacional de Crustáceos, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70-153, 04510 Ciudad de México, Mexico Universidad Nacional Autónoma de México Mexico Mexico
| | - Fernando Álvarez
- Colección Nacional de Crustáceos, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70-153, 04510 Ciudad de México, Mexico Universidad Nacional Autónoma de México Mexico Mexico
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Jose D, Nidhin B, Anil Kumar KP, Pradeep PJ, Harikrishnan M. A molecular approach towards the taxonomy of fresh water prawns Macrobrachium striatum and M. equidens (Decapoda, Palaemonidae) using mitochondrial markers. Mitochondrial DNA A DNA Mapp Seq Anal 2015; 27:2585-93. [PMID: 26119113 DOI: 10.3109/19401736.2015.1041114] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Genus Macrobrachium includes freshwater prawns which inhabit most diverse habitats ranging from low saline areas to inland hill streams and impounded water bodies. Being morphologically conserved, this genus has been exposed to severe disputes related to their taxonomy, systematics and phylogeny. Macrobrachium striatum and M. equidens represent two morphologically related congeneric species within this genus. Earlier, M. striatum was considered as a striped form of M. equidens. Though these species are now well-described morphologically and differentiated into two species, no molecular level investigation has been carried out in support of their speciation. We report a study on M. striatum and M. equidens with emphasis to their molecular data through mitochondrial markers (16S ribosomal RNA and cytochrome oxidase subunit I). Results obtained from developed molecular markers of the two species revealed considerable genetic differentiation between them. Phylogram generated using Minimum evolution and Neighbour joining analyses differentiated M. striatum and M. equidens as two independent species. Genetic distance data showed high interspecific divergence (ranging from 3.9% to 17.0% for 16S rRNA sequences and 13.8% to 21.0% for COI sequences) between M. striatum and M. equidens confirming the findings of phylogram. Hence, it could be delineated that M. striatum and M. equidens represent two distinct species within genus Macrobrachium with emphasis to their morphology and genetics.
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Affiliation(s)
- Deepak Jose
- a CUSAT, School of Industrial Fisheries , Fine Arts Avenue , Kochi , Kerala , India and
| | - B Nidhin
- a CUSAT, School of Industrial Fisheries , Fine Arts Avenue , Kochi , Kerala , India and
| | - K P Anil Kumar
- a CUSAT, School of Industrial Fisheries , Fine Arts Avenue , Kochi , Kerala , India and
| | - P J Pradeep
- b Department of Anatomy and Centex Shrimp, Faculty of Science , Mahidol University , Bangkok , Thailand
| | - M Harikrishnan
- a CUSAT, School of Industrial Fisheries , Fine Arts Avenue , Kochi , Kerala , India and
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DNA barcodes for ecology, evolution, and conservation. Trends Ecol Evol 2015; 30:25-35. [DOI: 10.1016/j.tree.2014.10.008] [Citation(s) in RCA: 284] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 10/23/2014] [Accepted: 10/28/2014] [Indexed: 01/28/2023]
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