Species delimitation and recognition in the Pediomelum megalanthum complex (Fabaceae) via multivariate morphometrics

Gene Flow Dependent Introgression and Species Delimitation

Plant Diversity and Resources ◽

10.3724/sp.j.1143.2012.11187 ◽

2012 ◽

Vol 34 (3) ◽

pp. 257 ◽

Cited By ~ 2

Author(s):

Fang DU ◽

Fang XU

Keyword(s):

Gene Flow ◽

Species Delimitation

Download Full-text

A New Species of the Genus Thermophis(Serpentes: Colubridae) from Shangri-La, Northern Yunnan, China, with a Proposal for an Eclectic Rule for Species Delimitation

Asian Herpetological Research ◽

10.3724/sp.j.1245.2014.00228 ◽

2014 ◽

Vol 5 (4) ◽

pp. 228 ◽

Cited By ~ 5

Author(s):

PENG Lifang ◽

LU Changhu ◽

HUANG Song ◽

GUO Peng ◽

ZHANG Yaping

Keyword(s):

New Species ◽

Species Delimitation ◽

A New Species

Download Full-text

INTEGRATING MORPHOLOGICAL AND GENETIC DATASETS TO UNDERSTAND SPECIES DELIMITATION: A CASE STUDY ON TEREBRATULIDE BRACHIOPODS

10.1130/abs/2018am-323533 ◽

2018 ◽

Author(s):

Natalia Lopez-Carranza ◽

◽

Sandra J. Carlson

Keyword(s):

Species Delimitation

Download Full-text

Molecular Species Delimitation of Larks (Aves: Alaudidae), and Integrative Taxonomy of the Genus Calandrella, with the Description of a Range-Restricted African Relic Taxon

Diversity ◽

10.3390/d12110428 ◽

2020 ◽

Vol 12 (11) ◽

pp. 428

Author(s):

Martin Stervander ◽

Bengt Hansson ◽

Urban Olsson ◽

Mark F. Hulme ◽

Ulf Ottosson ◽

...

Keyword(s):

Mitochondrial Dna ◽

Molecular Species ◽

Species Delimitation ◽

Integrative Taxonomy ◽

West African ◽

Northwest Africa ◽

Sub Saharan ◽

Plateau State ◽

Avian Family ◽

Relic Population

Larks constitute an avian family of exceptional cryptic diversity and striking examples of convergent evolution. Therefore, traditional morphology-based taxonomy has recurrently failed to reflect evolutionary relationships. While taxonomy ideally should integrate morphology, vocalizations, behaviour, ecology, and genetics, this can be challenging for groups that span several continents including areas that are difficult to access. Here, we combine morphometrics and mitochondrial DNA to evaluate the taxonomy of Calandrella larks, with particular focus on the African C. cinerea and the Asian C. acutirostris complexes. We describe a new range-restricted West African taxon, Calandrella cinerea rufipecta ssp. nov. (type locality: Jos, Plateau State, Nigeria), with an isolated relic population 3000 km from its closest relative in the Rift Valley. We performed molecular species delimitation, employing coalescence-based multi-rate Poisson Tree Processes (mPTP) on cytochrome b sequences across 52 currently recognized lark species, including multiple taxa currently treated as subspecies. Three species-level splits were inferred within the genus Calandrella and another 13 across other genera, primarily among fragmented sub-Saharan taxa and taxa distributed from Northwest Africa to Arabia or East Africa. Previously unknown divergences date back as far as to the Miocene, indicating the presence of currently unrecognized species. However, we stress that taxonomic decisions should not be based on single datasets, such as mitochondrial DNA, although analyses of mitochondrial DNA can be a good indicator of taxa in need of further integrative taxonomic assessment.

Download Full-text

Investigating the Parasitoid Community Associated with the Invasive Mealybug Phenacoccus solenopsis in Southern China

Insects ◽

10.3390/insects12040290 ◽

2021 ◽

Vol 12 (4) ◽

pp. 290

Author(s):

Hua-Yan Chen ◽

Hong-Liang Li ◽

Hong Pang ◽

Chao-Dong Zhu ◽

Yan-Zhou Zhang

Keyword(s):

Biological Control ◽

Species Delimitation ◽

Southern China ◽

Insect Pest ◽

Integrated Approach ◽

Molecular Data ◽

Coi Gene ◽

Morphological Examination ◽

Accurate Identification ◽

Phenacoccus Solenopsis

The cotton mealybug Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae), is an emerging invasive insect pest in China. Hymenopteran parasitoids are the key organisms for suppressing populations of P. solenopsis in the field, and therefore could be used as biological agents. Accurate identification of the associated parasitoids is the critical step to assess their potential role in biological control. In this study, we facilitated the identification of the parasitoid composition of P. solenopsis using an integrated approach of species delimitation, combining morphology with molecular data. Eighteen Hymenoptera parasitoid species belonging to 11 genera of four families are recognized based on morphological examination and molecular species delimitation of the mitochondrial cytochrome c oxidase 1 (COI) gene and the 28S rDNA using the automatic barcode gap discovery (ABGD) and the Bayesian Poisson tree processes model (bPTP). Among these species, eight species are primary parasitoids with Aenasius arizonensis (Girault) (Hymenoptera: Encyrtidae) being the dominant taxon, while the other 10 species are probably hyperparasitoids, with a prevalence of Cheiloneurus nankingensis Li & Xu (Hymenoptera: Encyrtidae). These results indicate that parasitoid wasps associated with P. solenopsis from China are diverse and the integrated taxonomic approach applied in this study could enhance the accurate identification of these parasitoids that should be assessed in future biological control programs.

Download Full-text