Evolutionary Biology

Archaic introgression contributed to shape the adaptive modulation of angiogenesis and cardiovascular traits in human high-altitude populations from the Himalayas

1. Giulia Ferraretti
2. Paolo Abondio
3. Marta Alberti
4. Agnese Dezi
5. Phurba T Sherpa
6. Paolo Cocco
7. Massimiliano Tiriticco
8. Marco di Marcello
9. Guido Alberto Gnecchi-Ruscone
10. Luca Natali
11. Angela Corcelli
12. Giorgio Marinelli
13. Davide Peluzzi
14. Stefania Sarno
15. Marco Sazzini

• Curated by eLife

  eLife Assessment

  This study presents valuable findings on what networks of genes were impacted by introgression from Denisovans, to identify the biological functions involved in high-altitude adaptation in Tibet. This study applies solid and previously validated methodology to identify genes with signatures of both introgression and positive selection. This paper would be of interest to population geneticists, anthropologists, and scientists studying the genetic basis underlying high-altitude adaptation.

Reviewed by eLife

The recombination landscape of introgression in yeast

1. Enrique J Schwarzkopf
2. Nathan Brandt
3. Caiti Smukowski Heil

• Curated by eLife

  eLife Assessment

  This study aims to analyse the effect of polymorphism on meiotic recombination in subspecies of Saccharomyces. The detection of reciprocal and non-reciprocal events is based on sequencing the haploid products of meiosis, and frequencies are compared between strains having introgressed genomic segments and strains lacking such segments. Unfortunately, the method used are inadequate for quantifying the non-reciprocal events.

Reviewed by eLife

Population genomics reveals strong impacts of genetic drift without purging and guides conservation of bull and giant kelp

1. Jordan B. Bemmels
2. Samuel Starko
3. Brooke L. Weigel
4. Kaede Hirabayashi
5. Alex Pinch
6. Cassandra Elphinstone
7. Megan N. Dethier
8. Loren H. Rieseberg
9. Jonathan E. Page
10. Christopher J. Neufeld
11. Gregory L. Owens

Reviewed by Arcadia Science

Reconstructing the evolutionary history of freshwater fishes (Nemacheilidae) across Eurasia since early Eocene

1. Vendula Šlechtová
2. Tomáš Dvořák
3. Jörg Freyhof
4. Maurice Kottelat
5. Boris Levin
6. Alexander Golubtsov
7. Vlastimil Šlechta
8. Jörg Bohlen

• Curated by eLife

  eLife Assessment

  In this valuable study, the authors attempt to reconstruct the evolutionary history of a large and widespread group of freshwater fishes (Nemacheilidae) across Eurasia since the early Eocene, based on molecular phylogenetic analysis with very comprehensive samplings including 471 specimens belonging to 250 living species. The authors infer that range expansions of the family were facilitated by tectonic connections, favourable climatic conditions, and orogenic processes, adding to our understanding of the effects of climatic change on biodiversity during the Cenozoic. The molecular evidence is overall solid, but the calibration points from the fossil records used in the analysis have not been clearly demonstrated or cited; the different dates for the calibration points might impact the discussion on the evolutionary history relating to past climatic changes.

Reviewed by eLife

The optimal clutch size revisited: separating individual quality from the parental survival costs of reproduction

1. Lucy A Winder
2. Mirre JP Simons
3. Terry Burke

• Curated by eLife

  eLife Assessment

  This important study challenges conventional life-history theory by demonstrating that reproductive-survival trade-offs are minimal in birds, except when reproductive effort is experimentally exaggerated. The evidence is solid, drawing from a meta-analysis of over 30 bird species, and effectively separates the effects of individual quality from reproductive costs. The findings will be of broad interest to evolutionary biologists and ecologists studying life-history trade-offs and reproductive strategies.

Reviewed by eLife

Evolution of novel mimicry polymorphisms through Haldane’s sieve and rare recombination

1. Riddhi Deshmukh
2. Saurav Baral
3. Athulya Girish Kizhakke
4. Muktai Kuwalekar
5. Krushnamegh Kunte

• Curated by eLife

  eLife Assessment

  This important study provides new and nuanced insights into the evolution of morphs in a textbook example of Batesian mimicry. The evidence supporting the claims about the origin and dominance relationships among morphs is convincing, but the interpretation of signals needs improvement with complementary analysis and some nuanced interpretation. Pending a revision, this work will be of interest to a broad range of evolutionary biologists.

Reviewed by eLife

Ventral Morphology and Ecological Implications of Cindarella eucalla (Artiopoda, Xandarellida) from Chengjiang Biota, China

1. Maoyin Zhang
2. Yu Liu
3. Huijuan Mai
4. Michel Schmidt
5. Xianguang Hou

• Curated by eLife

  eLife Assessment

  The study presents a very well-illustrated specimens of the artiopodan Cindarella eucalla from the Chengjiang Biota, using computer tomography (CT) scanning to illustrate multiple specimens with preserved appendages, a rarity in artiopodans. The description of these fossils is important for expanding our understanding of this taxon and its relatives. The imaging and morphological description are followed by a discussion of how this morphology relates to other Cambrian arthropods and its potential ecological function. The evidence provided in this section about resulting function and ecology is presently incomplete and the conclusions are put forward too strongly. This assessment could be improved if the work is revised with more careful wording and additional data.

Reviewed by eLife

Functional Diversification of Gene Duplicates under the Constraint of Protein Structure

1. Kangning Guo
2. Yuqing Yang
3. Tingting You
4. Kangli Zhu

Reviewed by Arcadia Science

Opening the species box: What parsimonious microscopic models of speciation have to say about macroevolution

1. Élisa Couvert
2. François Bienvenu
3. Jean-Jil Duchamps
4. Adélie Erard
5. Verónica Miró Pina
6. Emmanuel Schertzer
7. Amaury Lambert

Reviewed by Arcadia Science

Evolutionary trends in the emergence of skeletal cell types

1. Amor Damatac
2. Sara Koska
3. Kristian K Ullrich
4. Tomislav Domazet-Lošo
5. Alexander Klimovich
6. Markéta Kaucká

Reviewed by Arcadia Science