Cryptic speciation in the “ Marshallora nigrocincta ” species complex (Gastropoda, Triphoridae) from the Western Atlantic

2021 ◽  
Author(s):  
Maurício Romulo Fernandes ◽  
Fabiano Salgueiro ◽  
Thiago Silva Paula ◽  
Gisele Lôbo‐Hajdu ◽  
Alexandre Dias Pimenta
Keyword(s):  
Species Complex ◽  
Cryptic Speciation ◽  
Western Atlantic

scholarly journals Revision of Bairdiella (Sciaenidae: Perciformes) from the western South Atlantic, with insights into its diversity and biogeography

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Alexandre Pires Marceniuk ◽  
Eduardo Garcia Molina ◽  
Rodrigo Antunes Caires ◽  
Matheus Marcos Rotundo ◽  
Wolmar Benjamin Wosiacki ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Relationships ◽  
Species Complex ◽  
Atlantic Coast ◽  
Geographic Range ◽  
Molecular Evidence ◽  
Western Atlantic ◽  
Taxonomic History ◽  
Inshore Waters ◽  
A New Species

ABSTRACT The sciaenid genus Bairdiella comprises a group of relatively small fishes found in inshore waters and estuaries of the western Atlantic and eastern Pacific. Despite recent analyses of the phylogenetic relationships of Bairdiella, there has been no comprehensive revision of the alpha taxonomy of the species of the genus. Bairdiella ronchus from the western Atlantic, has a complex taxonomic history, with four junior synonyms recognized. Based on morphological and molecular evidence, this study indicates that B. ronchus represents a species complex. The species is therefore redescribed and its geographic range is redefined. Bairdiella veraecrucis, which is currently recognized as a junior synonym of B. ronchus, is revalidated, and a new species of the genus is described from the Atlantic coast of Brazil. Finally, inferences are made on the diversity and biogeography of the B. ronchus species complex.

Phylogeography of the Hypnea musciformis species complex (Gigartinales, Rhodophyta) with the recognition of cryptic species in the western Atlantic Ocean

2019 ◽  
Vol 55 (3) ◽  
pp. 676-687 ◽  
Author(s):  
Fabio Nauer ◽  
Carlos Frederico Deluqui Gurgel ◽  
Lígia Maria Ayres‐Ostrock ◽  
Estela Maria Plastino ◽  
Mariana Cabral Oliveira
Keyword(s):  
Atlantic Ocean ◽  
Cryptic Species ◽  
Species Complex ◽  
Hypnea Musciformis ◽  
Western Atlantic ◽  
Western Atlantic Ocean

scholarly journals Substantial genetic divergence and lack of recent gene flow support cryptic speciation in a colour polymorphic bumble bee ( Bombus bifarius ) species complex

2020 ◽  
Vol 45 (3) ◽  
pp. 635-652 ◽  
Author(s):  
Guillaume Ghisbain ◽  
Jeffrey D. Lozier ◽  
Sarthok Rasique Rahman ◽  
Briana D. Ezray ◽  
Li Tian ◽  
...  
Keyword(s):  
Gene Flow ◽  
Genetic Divergence ◽  
Species Complex ◽  
Bumble Bee ◽  
Cryptic Speciation ◽  
Recent Gene Flow

Taxonomic revision of the Menticirrhus americanus (Linnaeus, 1758) and M. littoralis (Holbrook, 1847) (Percomorphacea: Sciaenidae) species complexes from the western Atlantic

Zootaxa ◽  
2020 ◽  
Vol 4822 (3) ◽  
pp. 301-333
Author(s):  
ALEXANDRE PIRES MARCENIUK ◽  
RODRIGO ANTUNES CAIRES ◽  
MATHEUS MARCOS ROTUNDO ◽  
NAJILA NOLIE CATARINE DANTAS CERQUEIRA ◽  
RAQUEL SICCHA-RAMIREZ ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Species Complex ◽  
The United States ◽  
Pectoral Fin ◽  
Type Specimens ◽  
Western Atlantic ◽  
Body Side ◽  
Species Complexes ◽  
Fin Rays ◽  
Pectoral Fin Rays

The genus Menticirrhus is widely distributed in the Neotropical region, where its species are common and abundant in shallow coastal waters and estuaries. The diversity, biogeography, and evolutionary relationships of the Menticirrhus species are still poorly known, due primarily to the difficulty of differentiating the species, given the broad similarities in their external morphology. The present study is based on the analysis of morphological and molecular data, with the examination of type specimens and a comprehensive collection of non-type specimens from an ample geographic range. These analyses indicated that two widely distributed Western Atlantic species, Menticirrhus americanus and M. littoralis, represent species complexes. The M. littoralis species complex is characterized by the absence of dark bars on body side, and a smaller, light-colored pectoral fins, that barely reaching the tip of the depressed pelvic fins, with fewer pectoral-fin rays. This complex includes three species: M. littoralis, found in the Gulf of Mexico, M. gracilis, from the southeastern and southern coast of South America, and a new species, described here, from the northern to eastern Brazilian coast. The M. americanus species complex is characterized by the presence of dark bars on body side, and a large, dark pectoral fin, that surpass the tip of the depressed pelvic fin, with more pectoral-fin rays. This complex has two species, M. americanus, which occurs on the east coast of the United States and in the Gulf of Mexico, and M. martinicensis, found from Caribbean to Argentina, that represents a cryptic allopatric species. An identification key to all species of the genus is presented. 

scholarly journals Phylogeny and population genetic analyses reveals cryptic speciation in the Bombus fervidus species complex (Hymenoptera: Apidae)

PLoS ONE ◽  
2018 ◽  
Vol 13 (11) ◽  
pp. e0207080 ◽  
Author(s):  
Jonathan B. Koch ◽  
Juanita Rodriguez ◽  
James P. Pitts ◽  
James P. Strange
Keyword(s):  
Population Genetic ◽  
Species Complex ◽  
Cryptic Speciation ◽  
Genetic Analyses ◽  
Population Genetic Analyses

The utility of the 16S gene in investigating cryptic speciation within the Brachionus plicatilis species complex

2005 ◽  
Vol 147 (5) ◽  
pp. 1129-1139 ◽  
Author(s):  
S. Papakostas ◽  
A. Triantafyllidis ◽  
I. Kappas ◽  
T. J. Abatzopoulos
Keyword(s):  
Species Complex ◽  
Brachionus Plicatilis ◽  
Cryptic Speciation ◽  
16S Gene

Batillipes pennaki Marcus, 1946 (Arthrotardigrada: Batillipedidae): deciphering a species complex

Zootaxa ◽  
2019 ◽  
Vol 4648 (3) ◽  
pp. 549-567 ◽  
Author(s):  
ERIKA SANTOS ◽  
PURI VEIGA ◽  
MARCOS RUBAL ◽  
PAUL J. BARTELS ◽  
CLÉLIA M. C. DA ROCHA ◽  
...  
Keyword(s):  
Quantitative Data ◽  
Species Complex ◽  
Morphological Characters ◽  
Similar Species ◽  
Mediterranean Population ◽  
Western Atlantic ◽  
Original Diagnosis ◽  
Discriminant Analyses ◽  
Different Populations ◽  
Pseudocryptic Species

Batillipes pennaki has been considered a common and a cosmopolitan marine tardigrade species. However, the original diagnosis of this species is very incomplete, and consequently there is a high probability of incorrect records. Therefore, a comparative analysis of quantitative and qualitative morphological characters among eight different populations from the Atlantic basin was done in this study to investigate if B. pennaki is a complex of similar species, each with a restricted distribution range. The result of discriminant analyses showed clear morphometric differences between populations that were arranged into three main groups, distinguishing Western Atlantic populations, Eastern Atlantic populations and a Mediterranean population. Furthermore, the result of analyses of morphological structures revealed peculiarities of some traits with taxonomic relevance, such as leg IV sensory organs and primary clavae, consistent with the clusters revealed by quantitative data, allowing us to distinguish three different pseudocryptic species and supporting the hypothesis that B. pennaki is a species complex. 

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