Dustin J. Marshall

Dustin Marshall

@djmmeeg.bsky.social

2.1K followers 1K following 83 posts

Biologist at Monash University interested in size, energy and life history

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Environmental science 46%

Geography 14%

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Dustin Marshall @djmmeeg.bsky.social · 15d

Darwin speculated that it was energetically costly to be an hermaphrodite. He thought that might explain why they were relatively rare in animals. Our paper out today tested this conjecture for the first time.
royalsocietypublishing.org/rspb/article...

Hermaphrodites have lower metabolic rates than gonochores

Abstract. Hermaphroditism, where an individual can reproduce as both male and female, offers some clear reproductive advantages. Simultaneous hermaphroditi

royalsocietypublishing.org

Dustin Marshall @djmmeeg.bsky.social · 4d

royalsocietypublishing.org/rspb/article...

Hermaphrodites have lower metabolic rates than gonochores

Abstract. Hermaphroditism, where an individual can reproduce as both male and female, offers some clear reproductive advantages. Simultaneous hermaphroditi

royalsocietypublishing.org

Reposted by Dustin J. Marshall

School of Biological Sciences, Monash @MonashBiol @monashbiol.bsky.social · 4d

Is hermaphrodism less common in animals because it is energetically more costly? George Jarvis and @djmmeeg.bsky.social have analysed 536 species of marine invertebrates and found that hermaphrodites require approximately 27% less energy than gonochores on average.

doi.org/10.1098/rspb...

Reposted by Dustin J. Marshall, Pavel Kratina, Malte Jochum

Andrew Barnes @barnesecodiv.bsky.social · 7d

❗New paper alert❗
The 2nd publication from Poppy Romera's Masters is just out in @natcomms.nature.com
We find that adherence of 180 soil food webs to the energy equivalence rule strongly depends on the measure of energy use, trophic level, and food web structure. www.nature.com/articles/s41...

Hypothesised scaling relationships between body size and population density and energy use (metabolism and energy flux) for predators and secondary consumers

Dustin Marshall @djmmeeg.bsky.social · 15d

Re-upping for a different timezone

Dustin Marshall @djmmeeg.bsky.social · 15d

Hermaphrodites have lower metabolic rates than gonochores

Abstract. Hermaphroditism, where an individual can reproduce as both male and female, offers some clear reproductive advantages. Simultaneous hermaphroditi

royalsocietypublishing.org

Dustin Marshall @djmmeeg.bsky.social · 15d

We suspect that hermaphroditism evolves in low food availability environments, which also select for lower metabolic rates but this remains speculative (and testable?). We’re very grateful to those who provided data, the review team and also the great Deborah Charlesworth for reading earlier drafts.

Dustin Marshall @djmmeeg.bsky.social · 15d

We find that contrary to Darwin’s prediction, hermaphrodites have lower metabolic rates than gonochores. This difference is not driven by motility or size

Dustin Marshall @djmmeeg.bsky.social · 15d

While others thought it might be cheaper to be a hermaphrodite because you have to search for compatible mates less. But there have been very few empirical tests until @gc-jarvis.bsky.social compiled lots of data

Dustin Marshall @djmmeeg.bsky.social · 15d

Darwin said “The sole motive for the separation of the sexes which occurs to me, is that … the same individual should not have its vital powers taxed … by producing both pollen and seeds”.
This conjecture was formalised about a century later as the fixed cost model.

Dustin Marshall @djmmeeg.bsky.social · 27d

Careful. You’re at Stage 1: Exasperation. If you continue down this path, you could end up at Stage 2: publishing rants about the need for replication. onlinelibrary.wiley.com/doi/full/10....

Principles of experimental design for ecology and evolution

Here I argue that we do not discuss experimental design, often until it is too late. This editorial seeks to begin a conversation about how and where to replicate appropriately.

onlinelibrary.wiley.com

Reposted by Dustin J. Marshall

Catherine Sheard @sheardcat.bsky.social · Nov 19

Anyone looking for a Australia-based postdoc? Like animal behaviour / coding / birds? My fantastic collaborator, Iliana Medina, is advertising a position researching bird nests:

unimelb.wd105.myworkdayjobs.com/en-GB/UoM_Ex...

Research Fellow in Behaviour and Ecology

Role type: Full Time; Fixed Term for 2 years Faculty: Faculty of Science Department/ School: School of Biosciences Salary: Level A: $87,266 - $118,416 (PhD Entry Level - $110,319) plus 17% super Colla...

unimelb.wd105.myworkdayjobs.com

Reposted by Scott C. Doney, Isabelle M. Côté, Simon Roux , and 5 more Scott C. Doney, Isabelle M. Côté, Simon Roux, Elena Litchman, Joshua S. Weitz, Dustin J. Marshall, Mya Breitbart, Jessica A. Gephart

Jon Puritz @jonpuritz.marineevoeco.com · Nov 10

Job Opening **ASSISTANT PROFESSOR MARINE ECOLOGY**, Department of Biological Sciences, University of Rhode Island.

jobs.uri.edu/postings/15960

Job Opening **ASSISTANT PROFESSOR MARINE ECOLOGY**, Department of Biological Sciences, University of Rhode Island.

The Department of Biological Sciences in the College of the Environment and Life Sciences (CELS) at the University of Rhode Island (URI) invites applications for an academic year (9 month), tenure-track Assistant Professor position specializing in Marine Ecology. URI, the top public university in New England, is a land and sea grant research university located in Kingston, Rhode Island, a beautiful seaside community that is well connected by car, bus, and rail about 40 min from Providence, an hour from Boston and 3 hours from New York City.

Reposted by Simon Roux, Dustin J. Marshall

Lars Gamfeldt @gamfeldt.bsky.social · Nov 10

Opportunity!
Anybody knows of young marine ecologists (within 7 years from earned PhD) that would like to come to Gothenburg, Sweden, for a nationally funded Assistant Professorship? It is highly competitive but well funded. (1) of (3)

Reposted by Håvard Kauserud, Dustin J. Marshall, Stephen D. Murphy , and 2 more Håvard Kauserud, Dustin J. Marshall, Stephen D. Murphy, Tommaso Jucker, Andrew Hacket‐Pain

Katie Field @katiefield4.bsky.social · Nov 8

🌿🍄‍🟫🌱🍄We’re recruiting!!🌿🍄‍🟫🌱🍄

I’m looking for two postdocs and a technician to join my group @sheffielduni.bsky.social @sheffieldpps.bsky.social to work with me on my exciting @royalsociety.org Faraday Discovery Fellowship project, details for each post as follows:

Reposted by Dustin J. Marshall

Dylan Childs @dzchilds.bsky.social · Nov 6

🦜 New PhD project with @ACCE_DTP and project partners Macaw Recovery Network and Longleat — using bioacoustics data to help conserve one of the Neotropics’ most charismatic parrots, the Critically Endangered Great Green Macaw.

Find out more about ACCE+ DLA and how to apply 👉 accedtp.ac.uk

ACCE+ DLA programme: Landscape-scale drivers and limits of endangered species spatial and temporal distribution at University of Sheffield on FindAPhD.com

PhD Project - ACCE+ DLA programme: Landscape-scale drivers and limits of endangered species spatial and temporal distribution at University of Sheffield, listed on FindAPhD.com

www.findaphd.com

Reposted by Dustin J. Marshall

The Company of Biologists @biologists.bsky.social · Oct 15

Thank you to everyone for their support over the past 100 years, and for helping us celebrate this year. You can catch up with all our 100-year content on our special anniversary page bit.ly/4naj8Jr

Dustin Marshall @djmmeeg.bsky.social · Aug 20

Very kind of you to say thanks

Dustin Marshall @djmmeeg.bsky.social · Aug 19

That’s great to hear!

Reposted by Dustin J. Marshall

Chris Catano @chriscatano.bsky.social · Aug 19

I use your paper in a grad course on experimetal design and analysis. The students find it super helpful!

Reposted by Neil Pederson, Michael T. Meyer, Márk E. Hauber , and 4 more Neil Pederson, Michael T. Meyer, Márk E. Hauber, Dustin J. Marshall, Valeria Mazza, Erin K. Buchholtz, Samuele Ramellini

José Cerca @naturalselection.bsky.social · Aug 19

The 2025-26 Eco-Evo job list is out. Good luck to those applying!

docs.google.com/spreadsheets...

ecoevojobs.net 2025-26

docs.google.com

Dustin Marshall @djmmeeg.bsky.social · Aug 19

Personally, I think we should ditch the term pseudoreplication for a bunch of reasons, some of which I rant about in the paper.

Reposted by Dustin J. Marshall, Naomi Priest, John Wilkins , and 2 more Dustin J. Marshall, Naomi Priest, John Wilkins, Catherine J. Frieman, Vincent Raoult

Professor Euan Ritchie @euanritchie.bsky.social · Aug 19

"Australia has the second-lowest public expenditure on tertiary education institutions in the OECD…This has resulted in an endless chase for dollars (international students & “the next big thing”) rather than thinking about what an educated Australia should look like” www.smh.com.au/national/nsw...

Universities such as mine are making poor decisions, and we’re not allowed to know why

UTS has announced a “pause” on enrolments in 100 courses. Vacating these critically important areas diminishes not only the brand of UTS but the state it was designed to benefit.

www.smh.com.au

Reposted by Ian J. Wright, Dustin J. Marshall, Andrew L. Jackson

Craig White @craig-white.bsky.social · Jul 28

An ongoing Academic (Research and Teaching) position in Genomics, here at Monash University in Melbourne. Closing in a little over a week! Please share widely! Lecturer/Senior Lecturer level (similar to Assistant Professor). careers.pageuppeople.com/513/cw/en/jo...

Job Search

careers.pageuppeople.com

Reposted by Tim M. Blackburn, Ian J. Wright, Márk E. Hauber , and 2 more Tim M. Blackburn, Ian J. Wright, Márk E. Hauber, Dustin J. Marshall, Karl Andraczek

Craig White @craig-white.bsky.social · Jul 28

Two (!) ongoing Academic (Research and Teaching) positions in Ecology, here at Monash University in Melbourne. Closing in a little over a week! Please share widely! Both at Lecturer/Senior Lecturer level (similar to Assistant Professor) careers.pageuppeople.com/513/cw/en/jo...

Job Search

careers.pageuppeople.com

Reposted by Dustin J. Marshall

Dustin Marshall @djmmeeg.bsky.social · Jan 9

Out today , our paper on estimating selection on metabolic rate. We use simulations to identify some common pitfalls and solutions
royalsocietypublishing.org/doi/epdf/10....

royalsocietypublishing.org

Reposted by Dustin J. Marshall

Dustin Marshall @djmmeeg.bsky.social · Jan 20

1st. Body size & reproduction. Larger fish have higher reproductive outputs than smaller fish and that this matters for fisheries management and the design of protected areas.
www.science.org/doi/10.1126/...
doi.org/10.1002/fee....
doi.org/10.1073/pnas...
doi.org/10.1111/faf....

Fish reproductive-energy output increases disproportionately with body size

Reproduction does not scale linearly with body size in fish—bigger females produce many more offspring.

www.science.org

Reposted by Dustin J. Marshall

Dustin Marshall @djmmeeg.bsky.social · Sep 13

Our paper out today showing that larval crowding occurs in urban mosquito habitats and this crowding makes adult mosquitoes carry higher dengue viral loads. journals.plos.org/plosntds/art...

Larval crowding enhances dengue virus loads in Aedes aegypti, a relationship that might increase transmission in urban environments

Author summary The mosquito Aedes aegypti is responsible for transmitting several viruses to humans, including Zika, yellow fever, chikungunya, and dengue. The geographic distribution of this tropical...

journals.plos.org

Reposted by Dustin J. Marshall

The Company of Biologists @biologists.bsky.social · Jan 9

🧪 Deadline is 10 January 2025 to apply for a funded early-career researcher place at our Workshop 'Why Are Cells the Size They Are?' organised by
Dustin Marshall
@djmmeeg.bsky.social
and Craig White. Find out more and apply at
bit.ly/4gVDROh

#BiologistsWorkshops

#ECR

Reposted by Dustin J. Marshall, Dominique C. Bergmann

The Company of Biologists @biologists.bsky.social · Jan 13

🧪 Deadline to apply for a funded early-career researcher place at our Workshop 'Why Are Cells the Size They Are?' organised by Dustin Marshall
@djmmeeg.bsky.social and Craig White has been extended to 31 January 2025.

Find out more and apply at
bit.ly/4gVDROh

#BiologistsWorkshops

#ECR

Reposted by Dustin J. Marshall, Julen Astigarraga

Andrew Gelman et al. @statmodeling.bsky.social · May 28

Ecologists’ endless quest for automatic inference
statmodeling.stat.columbia.edu/2025/05/28/e...

Ecologists’ endless quest for automatic inference | Statistical Modeling, Causal Inference, and Social Science

statmodeling.stat.columbia.edu

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