Ionopsis × atalibae (Orchidaceae, Oncidiinae), a new natural hybrid from the Brazilian Amazon 

Phytotaxa ◽  
2021 ◽  
Vol 478 (2) ◽  
pp. 268-274
Author(s):  
AMAURI HERBERT KRAHL ◽  
DAYSE RAIANE PASSOS KRAHL ◽  
EMERSON RICARDO PANSARIN
Keyword(s):  
Brazilian Amazon ◽  
Sympatric Species ◽  
Flowering Plants ◽  
Natural Hybridization ◽  
Natural Hybrid ◽  
Intermediate Morphology ◽  
Relevant Role

Hybridization plays a relevant role in the evolution and diversification of flowering plants. Natural hybridization has been commonly recorded in some orchid groups. During fieldwork in a Citrus plantation in the Brazilian Amazon, plants of Ionopsis utricularioides, I. satyrioides and an unidentified taxon with intermediate morphology between both sympatric species were found. The plants with intermediate features are most likely a natural hybrid between I. utricularioides and I. satyrioides described here as I. × atalibae.

Catasetum × sheyllae (Orchidaceae: Catasetinae), a new natural hybrid from Brazilian Amazon

Phytotaxa ◽  
2021 ◽  
Vol 527 (4) ◽  
pp. 257-265
Author(s):  
PATRICK DE CASTRO CANTUÁRIA ◽  
DAYSE RAIANE PASSOS KRAHL ◽  
AMAURI HERBERT KRAHL ◽  
GUY CHIRON ◽  
João Batista Fernandes Da Silva ◽  
...  
Keyword(s):  
Field Study ◽  
Brazilian Amazon ◽  
Morphological Features ◽  
Natural Hybridization ◽  
Parent Species ◽  
Natural Hybrid ◽  
Putative Parent

Natural hybridization has often been recorded within certain genera of orchids, one of them is Catasetum. During a field study in a forest de igapó in Brazilian Amazon, a new natural hybrid was found, it is here described as Catasetum × sheyllae. Its morphological features, mainly the structures of the lip, are intermediate between those of its putative parent species, C. boyi and C. garnettianum, both observed in sympatry.

Begonia ×dinglensis, a natural hybrid of Philippine Begonia section Baryandra, as evidenced by morphological, phylogenetic and cytological data

Phytotaxa ◽  
2021 ◽  
Vol 494 (1) ◽  
pp. 151-164
Author(s):  
KOH NAKAMURA ◽  
ROSARIO RIVERA RUBITE ◽  
YOSHIKO KONO ◽  
JELENE V. MACABASCO ◽  
ARLENE D. TALAÑA ◽  
...  
Keyword(s):  
National Park ◽  
Natural Hybridization ◽  
Rock Slopes ◽  
Natural Hybrid ◽  
Cytological Evidence ◽  
Cytological Data ◽  
Place Of Origin

Here we describe a natural hybrid of Philippine Begonia from Bulabog Puti-an National Park in Dingle, Iloilo, Panay Island. The hybrid, named Begonia ×dinglensis after its place of origin, grows on moist, coralline-rock slopes at 200 m elevation. Morphological, molecular, and cytological evidence support its origin from natural hybridization between Philippine endemics B. camiguinensis and B. nigritarum.

scholarly journals A new natural hybrid of Broughtonia (Orchidaceae) from Cuba

Lankesteriana ◽  
2015 ◽  
Vol 15 (3) ◽  
Author(s):  
Ernesto Mújica ◽  
Elaine González ◽  
José L. Bocourt ◽  
Esther L. SantaCruz ◽  
J. M. Díaz
Keyword(s):  
Related Species ◽  
San Antonio ◽  
Time Frame ◽  
Natural Hybridization ◽  
Floral Traits ◽  
Natural Hybrid ◽  
Single Specimen ◽  
Hybridization Event

At Cabo San Antonio (Guanahacabibes Peninsula), Cuba in 2004, a single specimen of Broughtonia ortgiesiana (Rchb.f.) Dressler, and a related species, Broughtonia cubensis (Lindl.) Cogn., were both observed in flower simultaneously. In 2006, fruits were observed on B. ortgiesiana, and nine years later (2015) we noted five young plants in anthesis that displayed floral characteristics common to both species. Given the time frame and the blend of floral traits, we conclude that these five plants are the result of a natural hybridization event between the two Broughtonia species the details of which are described here.

scholarly journals Against the Odds: Hybrid Zones between Mangrove Killifish Species with Different Mating Systems

Genes ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1486
Author(s):  
Waldir M. Berbel-Filho ◽  
Andrey Tatarenkov ◽  
George Pacheco ◽  
Helder M. V. Espírito-Santo ◽  
Mateus G. Lira ◽  
...  
Keyword(s):  
Mating Systems ◽  
Sympatric Species ◽  
Natural Hybridization ◽  
Hybrid Zones ◽  
Mating Opportunities ◽  
Plant Hybrid ◽  
Two Hybrid ◽  
Selfing Species ◽  
Shed Light ◽  
Mangrove Killifish

Different mating systems are expected to affect the extent and direction of hybridization. Due to the different levels of sexual conflict, the weak inbreeder/strong outbreeder (WISO) hypothesis predicts that gametes from self-incompatible (SI) species should outcompete gametes from self-compatible (SC) ones. However, other factors such as timing of selfing and unilateral incompatibilities may also play a role on the direction of hybridization. In addition, differential mating opportunities provided by different mating systems are also expected to affect the direction of introgression in hybrid zones involving outcrossers and selfers. Here, we explored these hypotheses with a unique case of recent hybridization between two mangrove killifish species with different mating systems, Kryptolebias ocellatus (obligately outcrossing) and K. hermaphroditus (predominantly self-fertilizing) in two hybrid zones in southeast Brazil. Hybridization rates were relatively high (~20%), representing the first example of natural hybridization between species with different mating systems in vertebrates. All F1 individuals were sired by the selfing species. Backcrossing was small, but mostly asymmetrical with the SI parental species, suggesting pattern commonly observed in plant hybrid zones with different mating systems. Our findings shed light on how contrasting mating systems may affect the direction and extent of gene flow between sympatric species, ultimately affecting the evolution and maintenance of hybrid zones.

Emerging natural hybrid between Invasive Species and Native Congener of Emilia (Asteraceae) Found in Northern Taiwan

Phytotaxa ◽  
2018 ◽  
Vol 382 (2) ◽  
pp. 204
Author(s):  
JEN-YU WANG ◽  
JENN-CHE WANG
Keyword(s):  
Invasive Species ◽  
Flow Cytometry ◽  
Alien Species ◽  
Invasive Plants ◽  
Invasive Alien Species ◽  
Pollen Viability ◽  
Natural Hybridization ◽  
Natural Hybrid ◽  
The World ◽  
Northern Taiwan

Invasive plants had raised lots of concern about the environment and biodiversity. Many members of Asteraceae are notorious invasive alien species across the world. In Taiwan, Emilia (Asteraceae) contains one native and two naturalized species. Recently, we found some morphologically intermediate individuals between the native E. sonchifolia var. javanica and the alien E. praetermissa from northern Taiwan where the latter two grow sympatrically. Based on morphological comparisons, pollen viability and flow cytometry information, we confirmed the fact of natural hybridization. Herein, we describe a new hybrid Emilia ×latens J.-Y Wang & J.-C. Wang and provide a key to Emilia species in Taiwan.

Asymmetric hybridization origin of Rhododendron agastum (Ericaceae) in Guizhou, China

Phytotaxa ◽  
2021 ◽  
Vol 510 (3) ◽  
Author(s):  
QIAN LI ◽  
HUIE LI ◽  
LAN YANG ◽  
QIQIANG GUO ◽  
YARU FU ◽  
...  
Keyword(s):  
Morphological Characteristics ◽  
Plastid Dna ◽  
Natural Hybridization ◽  
Guizhou Province ◽  
Parental Origin ◽  
Intermediate Morphology ◽  
Conservation Of Genetic Resources ◽  
Hybridization Origin ◽  
F2 Generation ◽  
Future Utilization

Rhododendron is one of the famous flowers in the world. Four wild Rhododendron species, namely, R. delavayi Franch., R. agastum Balf. f. et W. W. Smith., R. decorum Franch., and R. irroratum Franch., belong to subgenus Hymenanthes, which are sympatrically distributed in the Baili Rhododendron Nature Reserve of Guizhou Province, China. The intermediate morphology of R. agastum in the reserve, which is between R. delavayi and R irroratum or between R. delavayi and R. decorum, has been speculated that R. agastum is a hybrid of one of the two combinations. However, the exact parentage of R. agastum in the reserve remains controversial. In this study, the four Rhododendron species were investigated to identify the parental origin of R. agastum based on 13 morphological characteristics, 20 co-dominant inherited microsatellite markers, and two maternal inherited plastid DNA makers. Results of genetic structure and origin scenario clearly support that R. agastum is a natural hybrid between R. delavayi and R. irroratum rather than R. delavayi and R. decorum, which is consistent with their morphological characteristics. In addition, hybridization analysis indicates that R. agastum is dominated by F2 generation in the reserve. Furthermore, haplotype analysis suggests that natural hybridization between R. delavayi and R. irroratum is bidirectional but asymmetric with R. delavayi, the main maternal parent of R. agastum. Our results provide theoretical basis for future utilization and conservation of genetic resources of these Rhododendron species.

Natural interspecific hybridization in Odontophrynus (Anura: Cycloramphidae)

2009 ◽  
Vol 30 (4) ◽  
pp. 571-575 ◽  
Author(s):  
Julián Lescano ◽  
Dardo Marti ◽  
Diego Baldo ◽  
Martín Pereyra ◽  
Sergio Rosset
Keyword(s):  
South America ◽  
Parental Species ◽  
Single Case ◽  
Natural Hybridization ◽  
Natural Hybrid ◽  
Southern Brazil ◽  
Genetic Studies ◽  
Hybrid Genome ◽  
Group Report ◽  
Hybrid Specimen

AbstractThe frog genus Odontophrynus is a composite of diploid and tetraploid populations and species that are widely distributed in South America. Some of the several genetic studies on this group report the production of artificial hybrids but only a single case of natural hybridization has been documented, in southern Brazil. In this study we report the finding of an interspecific natural hybrid specimen in central Argentina. We present morphological and cytogenetical evidence that the diploid taxa Odontophrynus cordobae and O. occidentalis are the parental species. The hybrid genome exhibited problematic pairing and segregation of homeologue chromosomes during meiosis, and the production of non-reduced gametes.

scholarly journals New distribution record of Daceton boltoni Azorsa and Sosa-Calvo, 2008 (Insecta: Hymenoptera) in the Brazilian Amazon

Check List ◽  
2011 ◽  
Vol 7 (6) ◽  
pp. 878 ◽  
Author(s):  
Ricardo Eduardo Vicente ◽  
Juliane Dambroz ◽  
Marliton Rocha Barreto
Keyword(s):  
Brazilian Amazon ◽  
First Record ◽  
Sympatric Species ◽  
Mato Grosso ◽  
Distribution Record ◽  
New Distribution

The presence of Daceton boltoni in Cotriguaçu municipality, state of Mato Grosso, southern Amazon is reported. Workers of D. boltoni were collected manually in nests on the branches of three Caxeta trees (Simarouba amara Aubl. - Simaroubaceae) from a reforestation area. In the same location where D. boltoni was recorded, Daceton armigerum (Latreille 1802) workers have also been collected, corroborating the hypothesis that these are sympatric species. This is the first record of the occurrence of this species in Mato Grosso state and the second in the Brazilian Amazon.

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