There is lots of evidence for porous species boundaries, and transfer of beneficial genes between #species . But does selection favour porous rather than closed species boundaries?

This article by Tim Barraclough Oxford Biology investigates

👉ow.ly/OKJ050RcYlH

👉Novel methods and approaches are vital to addressing fundamental questions in evolutionary biology

👉They benefit our discipline by making new tools accessible to all

👉Read our Methods Articles here shorturl.at/itNT1 and submit your Methods Article to Journal of Evolutionary Biology

Indirect genetic effects will make group size surprisingly evolvable as individuals influence their own group size & the group size of others when they join/leave groups Therefore there are direct & indirect genetic effects for grouping

David N. Fisher

👉ow.ly/PUhN50R43qe

What is the impact of coevolution on the viral diversity?
We deployed an experimental system with two bacterial hosts and their two viruses; the host’s resistance response in mixed-species communities was key to maintaining diversity

Lisa Butt et al

👉academic.oup.com/jeb/advance-ar…

A late burst of colour #evolution in a radiation of #songbirds (Passeriformes: Parulidae) suggests secondary contact drives signal divergence

👉ow.ly/QOl050QU7f5

Hélène Leroy et al.

The influence of GC-biased gene conversion on non-adaptive sequence #evolution in short introns of #Drosophila melanogaster

👉ow.ly/kXCL50QU735

Burçin Yıldırım & Claus Vogl Vetmeduni

The more cheaters the better! Diversity of disruptive cheating in the host population's #metamicrobiome promotes host regulation of beneficial microbes and #holobiont mutualisms

ow.ly/4sIC50QU6Pm

The impact of climate change might be underestimated because little is known about the upper temperature limits of fertility. We propose standardised methods to measure heat effects on fertility across different animals

👉ow.ly/snf850QU65V

Prof Amanda Bretman et al

Coevolution between heat and cold tolerance in endotherms

ow.ly/Unjo50QU611

Hongtao Xiao and colleagues

Check out out the current issue of Journal of Evolutionary Biology online now!

👉ow.ly/qum950QU80t

Cover stars Richard Merrill @LMU_muechen Smithsonian Panama URosario heliconiuspapers
📸 A Heliconius cydno cydno perching on a Passiflora vine. Jorge Valero

Jump dispersal drives the relationship between micro- and macroevolutionary dynamics in a freshwater fish subfamily:

academic.oup.com/jeb/advance-ar…

Tom Jamonneau et al.

Can negative frequency-dependent selection (NFDS) overcome selection posed by habitat heterogeneity to promote local polymorphism? Individual-based modeling suggests NFDS may maintain local polymorphism under limited conditions

Gopal Murali IISER Thiruvananthapuram

ow.ly/sgqs50QG8Iu

Both sexes of Heliconius cydno respond more positively toward their own color patterns, but wing pattern alone did not predict mating outcome in female choice experiments

Richard Merrill @LMU_muechen Smithsonian Panama URosario heliconiuspapers

ow.ly/393O50QG8rE

79% of 16101 cooperative bird groups sampled in nature were pairs or trios and these had higher per capita reproductive success than larger groups

Why this matters and what it has to do with Michener's Paradox: ow.ly/OkUW50QG81F

Philip Downing Biodiverse Anthropocenes

Evolving in environments with cadmium accumulating plants is costly for spider mites, despite no signs of adaptation, nor evolution of avoidance. Are there hidden mechanisms at play?

Godinho et al.

ow.ly/qYaz50QG7MA

Flying insects segregate in discrete vertical strata . Are flight-height adjustments implicated in early species divergence?

Another shout-out to January's #editorschoice David Rivas, Carlos Gantiva, Carolina Pardo, salazar.camilo, Stephen Montgomery and Richard Merrill

ow.ly/g0tK50QG7mS

We experimentally tested the function of a novel signal produced by some males of treehopper species. We found that the signal does not increase the response or alter the behavior of females or males

Ignacio Escalante, Dr. Lauren Cirino, Sage DeLong, Camille Desjonquères

ow.ly/nFJb50QG7i4

An evolving asexual mutL- mutator population underwent independent rounds of lethal selection via a series of antibiotics. We describe the spontaneous emergence and trajectory of a second mutator allele (mutT-) in the population

Mitra Maria Elgrail et al.

ow.ly/CgUf50QG7WC

Spiny lizards that have evolutionarily lost a colorful sexual signal do not have larger vomeronasal organs (VNOs) than species that have retained the signal. Instead, larger species tend to have larger VNOs!

Anastassia @neurostephtide Cristina Romero-Diaz

ow.ly/I2Sz50QG7bC

Tempo and mode (T&M) of evolution summarize ancient and controversial subjects of Evolutionary Biology. We address it using Markov-chains, character reconstruction, and morphospace analysis in Lepidosaurian limb evolution as a study case

ow.ly/67ck50QG770