Article
Entomology
Katsura Ito, Kanta Takatsuki
Summary: Spider mites from different host plants have different host utilization abilities, and hybrid offspring can survive on both host plants.
EXPERIMENTAL AND APPLIED ACAROLOGY
(2023)
Article
Multidisciplinary Sciences
Tomoko Katte, Shota Shimoda, Takuya Kobayashi, Ayako Wada-Katsumata, Ritsuo Nishida, Issei Ohshima, Hajime Ono
Summary: This study highlights the role of plant chemistry in the host preferences of the leaf-mining moth Acrocercops transecta. The researchers discovered that females from the Lyonia race are attracted to specific triterpenoid glycosides found in Lyonia plants, while they do not lay eggs on Juglans plants. The findings indicate that plant chemicals play a crucial role in determining the host selection of phytophagous insects.
SCIENTIFIC REPORTS
(2022)
Article
Plant Sciences
Sinzinando Albuquerque-Lima, Ariadna Valentina Lopes, Isabel Cristina Machado
Summary: This study quantified the reproductive isolation between two co-occurring bat-pollinated Bauhinia species and identified the pre- and post-pollination barriers that contribute to their genetic isolation. The results showed that the two species are completely isolated by multiple barriers, including geographic isolation and differences in flowering peaks. This study highlights the importance of reproductive barriers in preventing gene flow and provides insights into the mechanisms of species evolution and reproductive isolation.
JOURNAL OF PLANT RESEARCH
(2023)
Article
Plant Sciences
Tial C. Ling, Patcharin Phokasem, Chainarong Sinpoo, Yong-Ping Yang, Terd Disayathanoowat
Summary: The study found that microhabitat and pollinator isolation are the most important isolating barriers in maintaining the coexistence of the two Salvia species, while post-pollination barriers play an important role in preventing gene flow between these two Salvia species.
Article
Ecology
Linyi Zhang, Glen R. Hood, Isaac Carroo, James R. Ott, Scott P. Egan
Summary: Divergent selection between alternative environments plays a crucial role in reproductive isolation, but the importance of within-environment variation in differentiation between lineages has been overlooked. This study revealed weak hybrid inviability between host-associated lineages of B. treatae despite strong genomic differentiation, with great variation in hybrid fitness observed on individual trees. Considering the environmental context of hybridization is essential for predicting divergence under variable selection.
AMERICAN NATURALIST
(2021)
Article
Biochemistry & Molecular Biology
Daniel J. Bruzzese, Hannes Schuler, Thomas M. Wolfe, Mary M. Glover, Joseph Mastroni, Meredith M. Doellman, Cheyenne Tait, Wee L. Yee, Juan Rull, Martin Aluja, Glen Ray Hood, Robert B. Goughnour, Christian Stauffer, Patrik Nosil, Jeffery L. Feder
Summary: The study found varying degrees of reproductive isolation among allopatric populations of two interbreeding cherry-infesting fruit flies, with one Wolbachia strain associated with unidirectional postmating reproductive isolation. When coupled with other reproductive barriers, the strength of cytoplasmic incompatibility associated with this strain would not prevent its spread to uninfected populations.
Article
Ecology
Miguel A. Cruz, Sara Magalhaes, Elio Sucena, Flore Zele
Summary: The study found that host-associated incompatibility contributes 1.5 times more than Wolbachia-induced incompatibility in reducing hybrid production, and the two sources of incompatibility act through different mechanisms in an additive fashion. In addition, near-complete F1 hybrid sterility was observed between populations of the two forms, with no contribution from Wolbachia.
Review
Agriculture, Dairy & Animal Science
Tarique Hussain, Ghulam Murtaza, Dildar H. Kalhoro, Muhammad S. Kalhoro, Elsayed Metwally, Muhammad Chughtai, Muhammad U. Mazhar, Shahzad A. Khan
Summary: The interactions between gut microbiota and host metabolism have a significant impact on health, including metabolic regulation and reproductive hormonal function. Gut bacteria participate in steroid hormone metabolism through enzymes and play a crucial role in reproductive events. Environmental bacteria can degrade steroid hormones and their compounds to eliminate pollution.
Article
Evolutionary Biology
Selim Bouaouina, Yannick Chittaro, Yvonne Willi, Kay Lucek
Summary: Geographic isolation leads to reproductive isolation, and zones of secondary contact allow investigation of how reproductive isolation evolves and co-existence is maintained. Sampling two contact zones of two mainly allopatric Alpine butterflies, we found that these contact zones have remained stable and are maintained by the asynchronous life cycles of the two butterflies. Allochrony contributes to the maintenance of the contact zones, but gene flow is affected by the degree of geographic isolation. The study highlights the potential of asynchronous biennial life cycles in promoting coexistence and serving as a barrier to gene flow.
Article
Biology
Jessica L. McKenzie, H. Andres Araujo, Jack L. Smith, Dolph Schluter, Robert H. Devlin
Summary: Global change is causing unprecedented alterations in ecosystems, potentially leading to hybridization between different species and affecting genetic diversity, adaptive capacity, and evolutionary paths. This study on Chinook and Coho salmon found potential and consequences of hybridization, including postzygotic developmental barriers. Climate change could further influence hybridization between these species, with unknown impacts on the future of these threatened salmon and their habitats.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Plant Sciences
Rongli Liao, Weibang Sun, Yongpeng Ma
Summary: This study investigates hybridization of Buddleja plants in disturbed habitats, finding that most hybrids are F(1)s and gene flow is limited by mainly F-1 hybrids, maintaining species boundaries. Evidence suggests B. crispa as the maternal parent in one population and predicts a unidirectional hybridization pattern in another.
Article
Biochemistry & Molecular Biology
Polina Drozdova, Alexandra Saranchina, Ekaterina Madyarova, Anton Gurkov, Maxim Timofeyev
Summary: Ancient Lake Baikal is a speciation hotspot and the gammaroid amphipods are the most diverse group in the lake. Recent research has shown that one common species, Eulimnogammarus verrucosus, actually consists of at least three cryptic species. By analyzing the phylogeny, genome sizes, and reproductive compatibility, this study confirms the genetic separation between these species and highlights the need for precise tracking of sample origin in future studies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Francisco Javier Jimenez-Lopez, Montserrat Arista, Maria Talavera, Leonor Patricia Cerdeira Morellato, John R. Pannell, Juan Viruel, Pedro L. Ortiz Ballesteros
Summary: The genetic divergence between species depends on reproductive isolation (RI) caused by traits reducing interspecific mating (prezygotic isolation) or reduced hybrid fitness (postzygotic isolation). Prezygotic barriers were found to be generally stronger than postzygotic barriers, but previous studies mostly examined F-1 hybrid fitness in early life cycle stages. This study combined field and experimental data to assess the strength of 17 prezygotic and postzygotic reproductive barriers between co-occurring Lysimachia species. The results showed near complete RI between the two species, with prezygotic barriers contributing more in reducing gene flow in allopatry, while their contributions were more similar in sympatry. The strength of postzygotic RI was underestimated when effects on late stages of the life cycle were disregarded.
Article
Horticulture
Jingli Gao, Wenjing Cai, Wenxi Li, Yang Zheng, Xiaoying Bi
Summary: The study on the allopatric sister species Iris dichotoma and I. domestica shows that besides geographical isolation, they don't have other prezygotic isolating mechanisms. Their daily flowering times are significantly different but overlap for 2.6 hours, during which they have good cross compatibility. They have common legitimate pollinators, but the visiting time doesn't overlap, and I. domestica's pollen quantity is depleted before I. dichotoma opens. Therefore, temporal isolation causes complete reproductive isolation, and flower structure difference also plays an important role in reproductive isolation.
SCIENTIA HORTICULTURAE
(2023)
Article
Biochemistry & Molecular Biology
Atal Saha, Anastasia Andersson, Sara Kurland, Naomi L. P. Keehnen, Verena E. Kutschera, Ola Hossjer, Diana Ekman, Sten Karlsson, Marty Kardos, Gunnar Stahl, Fred W. Allendorf, Nils Ryman, Linda Laikre
Summary: The coexistence of genetically distinguishable populations of the same species in the same ecological area is a puzzle in ecology. Research on sympatric brown trout populations in small Lakes Bunnersjoarna, Sweden, reveals genetic divergence and different degrees of isolation between the two coexisting demes, driven by genetic drift and diversifying selection. The study highlights the importance of considering hidden biodiversity in conservation management.