Redescription and distribution of Mastigodiaptomus montezumae (Copepoda, Calanoida, Diaptomidae) in Mexico

Santos-Silva, Edinaldo Nélson dos; Eléas-Gutiérrez, M.; Silva-Briano, Marcelo

doi:10.1007/bf00017631

Cited by 11 publications

(7 citation statements)

References 4 publications

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“…In Mexico, Mastigodiaptomus has been recorded in water systems from between 1,600 and 2,400 m.a.s.l. in the Neovolcanic Axis Province (Dos Santos-Silva, Elías-Gutiérrez & Silva-Briano, 1996) to other regions, such as semi-desertic provinces, including the Mexican Altiplano (Gutiérrez-Aguirre, Cervantes-Martínez & Elías-Gutiérrez, 2014). The genus is also found in surface waters in the Caribbean Province at lowlands (Bowman, 1986;Mercado-Salas et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Remarks onMastigodiaptomus(Calanoida: Diaptomidae) from Mexico using integrative taxonomy, with a key of identification and three new species

Gutiérrez-Aguirre

Cervantes-Martínez

Elías‐Gutiérrez

et al. 2020

PeerJ

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Background In Mexico, species of four families of free-living calanoid copepods have been recorded as inhabitants of several freshwater systems. These families are Centropagidae, Temoridae, Pseudodiaptomidae and Diaptomidae. The genera Leptodiaptomus and Mastigodiaptomus are the most speciose diaptomid genera in Mexico, and they inhabit natural and artificial lakes, ephemeral ponds, springs, and caverns. Leptodiaptomus is considered as an endemic Nearctic genus, whereas Mastigodiaptomus is a widely distributed Neotropical genus in the southern USA, Mexico, the Caribbean Islands and Central America. Based on new and recent evidence, Mastigodiaptomus diversity has been underestimated: six species of the genus were known before 2000. In this work three new Mastigodiaptomus species have been described from different regions of Mexico by using integrative taxonomy. We also gave amended diagnosis of M. nesus Bowman (1986) and M. patzcuarensis s. str. (Kiefer, 1938). Methods In this work, the taxonomic status of the species was clarified using modern, integrative method based on the COI gene as a DNA marker, plus micro-structural analysis (based on SEM and ligth microscopy). Results Three new species of Mastigodiaptomus were described based on genetic and morphological analyses: M. alexei sp. n., M. ha sp. n. and M. cihuatlan sp. n. Also amended description of M. nesus, morphological variation of M. patzcuarensis s. str., and a comparison of them with all known sequences within the genus are provided. These new findings show that in Mastigodiaptomus differences in several cuticular microstructures of several appendages (such as the antennules, the fifth legs, or the urosomites of these copepods) agree with the interspecific genetic divergence >3% observed in sequences of the COI gene, and the integration of this information is a powerful tool in species delineation.

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Section: Discussionmentioning

confidence: 99%

Remarks onMastigodiaptomus(Calanoida: Diaptomidae) from Mexico using integrative taxonomy, with a key of identification and three new species

Gutiérrez-Aguirre

Cervantes-Martínez

Elías‐Gutiérrez

et al. 2020

PeerJ

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“…P1 with three-segmented Exp and two-segmented End; P2–P4 with three-segmented Exps and Enps. The armature formula of P1–P4 observed in the material analyzed here and shown in Table 2 has been described and illustrated for other Mastigodiaptomus species [1] , [20] . Only two females from Zacatecas (12.5% of the surveyed population) showed two spines on Enp3P4 (on the left side).…”

Section: Resultsmentioning

confidence: 70%

“…On the other hand, the micro-structural conformation of anatomic features related to reproduction (i.e., antennules and fifth legs) in female and male freshwater copepods has been informative for species recognition elsewhere [20] , [22] , and these morphological differences are consistent with reproductive isolation [10] or genetic differentiation in the COI gene among species [23] . Both genetic analyses and morphology, have been employed to successfully discriminate sibling species of marine and freshwater copepods [24] , [25] , cladocerans [23] , rotifers [26] , polychaetes [27] , and others.…”

Section: Discussionmentioning

confidence: 99%

An Example of How Barcodes Can Clarify Cryptic Species: The Case of the Calanoid Copepod Mastigodiaptomus albuquerquensis (Herrick)

2014

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BackgroundThe freshwater calanoid Mastigodiaptomus is a genus with high richness in the Americas and is composed of nine species, seven recorded in Mexico and four that are apparently endemic to small areas. Mastigodiaptomus albuquerquensis is a common, widely distributed species ranging from the southern USA to Central America. This species can be easily identified by a notable butterfly-like sclerotization on the basis of the right fifth leg of males. Nevertheless, morphological differences observed among populations throughout this species distributional range have led to the description of several related species or subspecies, such as M. albuquerquensis patzcuarensis from Lake Pátzcuaro in the Central Plateau of Mexico.MethodsGenetic results based on barcodes, morphology based on scanning electron and light microscopy images, and morphometric analyses were used to describe cryptic species within the M. albuquerquensis complex.ResultsThe morphological analyses coincided partially with the genetic markers, suggesting the existence of at least two sibling species: M. albuquerquensis s. str. and M. patzcuarensis. A third species was genetically separated but was morphologically indistinguishable from the M. patzcuarensis group.ConclusionsHidden diversity has been a major problem in establishing real patterns of species distribution and genetic acquisition from megadiverse hotspots such as Mexico, where the Nearctic and the Neotropical regions of the Americas meet. Barcodes can help taxonomists to reveal and formally name these new species. Here, we describe two of three potential species highlighted by the use of barcodes: M. albuquerquensis s. str. in the northern semi-desert and M. patzcuarensis on the Central Plateau at more than 2000 m above sea level.

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“…This is the third report of a Mastigodiaptomus species inhabiting Caribbean islands with an elevation below 100 masl: M. nesus was recorded on San Salvador Island, the Cayman Islands, the Bahamas, and Cuba; M. purpureus in Cuba [39], and M. ha in Cozumel (this report). Five species of this genus have been recorded at altitudes ≥ 1000 masl: M. montezumae [40], M. patzcuarensis, M. albuquerquensis [3,41], M. suarezmoralesi [38], and M. amatitlanensis [3]. It is likely that the ability of diaptomid genera to dwell in wide elevation and latitudinal ranges is a factor promoting the high regional diversity of Mastigodiaptomus.…”

Section: Discussionmentioning

confidence: 99%

Phenetic and Genetic Variability of Continental and Island Populations of the Freshwater Copepod Mastigodiaptomus ha Cervantes, 2020 (Copepoda): A Case of Dispersal?

et al. 2021

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The diversity of freshwater zooplankton is still little known in Mexico, particularly in reference to insular zooplankton communities. Diaptomid copepods (Crustacea: Copepoda: Calanoida) are a widespread group worldwide, and Mexico harbours high diaptomid diversity. Based on a recent sampling of freshwater zooplankton on a Caribbean Island of Mexico, we present the first record of a diaptomid copepod from an island freshwater ecosystem. It shows the well-known tendency of Neotropical diaptomids to have restricted distributional patterns and high levels of endemism. The species recorded, Mastigodiaptomus ha (Cervantes-Martínez, 2020) appears to have a restricted distribution in the Yucatan Peninsula (YP), and the island as well. In order to explore potential differences between the island and continental populations of this species, its phenetic and genetic diversity was analysed by performing morphological comparisons and also by exploring differences of the habitat conditions and genetic sequences (CO1 gene). Our analysis revealed a low (average = 0.33%) genetic divergence between both populations; likewise, both the morphology and habitat conditions closely resemble each other in these two populations. The low genetic divergence between the continental and island populations of M. ha suggests an early common origin of the species in the geological history of the YP.

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Redescription and distribution of Mastigodiaptomus montezumae (Copepoda, Calanoida, Diaptomidae) in Mexico

Cited by 11 publications

References 4 publications

Remarks onMastigodiaptomus(Calanoida: Diaptomidae) from Mexico using integrative taxonomy, with a key of identification and three new species

Remarks onMastigodiaptomus(Calanoida: Diaptomidae) from Mexico using integrative taxonomy, with a key of identification and three new species

An Example of How Barcodes Can Clarify Cryptic Species: The Case of the Calanoid Copepod Mastigodiaptomus albuquerquensis (Herrick)

Phenetic and Genetic Variability of Continental and Island Populations of the Freshwater Copepod Mastigodiaptomus ha Cervantes, 2020 (Copepoda): A Case of Dispersal?

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