Flexible males, proactive females: increased boldness/exploration damping with time in male but not female colonists DOI Creative Commons
Andrey V. Tchabovsky, Elena N. Surkova, L. E. Savinetskaya

et al.

Royal Society Open Science, Journal Year: 2024, Volume and Issue: 11(12)

Published: Dec. 1, 2024

Individuals colonizing new areas during range expansion encounter challenging and unfamiliar environments, suggesting that colonists should differ in behavioural traits from residents of source populations. The colonizer syndrome is supposed to be associated with boldness, exploration, activity low sociability. We assessed spatial temporal variation the an expanding population midday gerbils ( Meriones meridianus ). Male-first did not significantly population, whereas female-first were bolder, faster more explorative than females population. These findings support a boldness/exploration as typical trait, which appears restricted gerbils. Males also differed dynamics after colony establishment. In males, boldness/exploration/sociability peaked newly founded colonies, then sharply decreased subsequent generations consistently decreasing environmental uncertainty ageing colonies. females, greater diminish time post-colonization, i.e. female retained bold/explorative phenotype despite facing less environment. Thus, colonists, unlike carry specialized corresponding proactive coping strategy. link sex differences sex-specific life-history strategies.

Language: Английский

Flexible males, proactive females: personality tests show increased boldness/exploration in colonists damping with time in males but not in females DOI Creative Commons
Andrey V. Tchabovsky, Elena N. Surkova, L. E. Savinetskaya

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: May 22, 2024

Abstract Individuals colonizing new areas at expanding ranges encounter challenging and unfamiliar environments, suggesting that colonists should differ in behavioural traits from the residents of source populations. The colonizer syndrome is supposed to be associated with boldness, exploration, activity, low sociability. We assessed spatial temporal variation population midday gerbils ( Meriones meridianus ). Male first tended faster bolder than residents, although difference was not significant. Female were bolder, more explorative residents. These findings support boldness/exploration as a typical trait, which appears restricted females gerbils. Males also differed dynamics post-colony establishment. In males, boldness/exploration/sociability peaked newly founded colonies, then sharply decreased subsequent generations following decreasing environmental uncertainty aging colonies. females, increased did lower time post-colonization, i.e. female retained bold/explorative phenotype despite facing less environment. Thus, colonists, unlike carry specialized corresponding proactive coping strategy. link sex differences sex-specific life-history strategies.

Language: Английский

Citations

1
Does the Colonizing Population Exhibit a Reduced Genetic Diversity and Allele Surfing? A Case Study of the Midday Gerbil (Meriones meridianus Pallas) Expanding Its Range DOI Creative Commons
О. Н. Батова, Nikolay Markov, С. В. Титов

et al.

Animals, Journal Year: 2024, Volume and Issue: 14(18), P. 2720 - 2720

Published: Sept. 20, 2024

Colonizing populations at the leading edge of range expansion are expected to have a reduced genetic diversity and strong structure caused by drift allele surfing. Until now, few studies found signatures surfing in expanding wild populations. Using mtDNA markers, we studied population midday gerbils (Meriones meridianus) their west Kalmykia (southern Russia) following new cycle desertification, re-colonizing areas abandoned mid-2010s. In colonizing population, diversity, redistribution haplotype frequencies—in particular, favor variants rare core population—and combined with differentiation from population—patterns suggestive on wave expansion. terms spatial structuration, western sampled 2008 before its collapse 2017 occupies intermediate position between current population. This suggests that increased general features marginal populations, enhanced founder allele-surfing effects edges ranges.

Language: Английский

Citations

0
Flexible males, proactive females: increased boldness/exploration damping with time in male but not female colonists DOI Creative Commons
Andrey V. Tchabovsky, Elena N. Surkova, L. E. Savinetskaya

et al.

Royal Society Open Science, Journal Year: 2024, Volume and Issue: 11(12)

Published: Dec. 1, 2024

Individuals colonizing new areas during range expansion encounter challenging and unfamiliar environments, suggesting that colonists should differ in behavioural traits from residents of source populations. The colonizer syndrome is supposed to be associated with boldness, exploration, activity low sociability. We assessed spatial temporal variation the an expanding population midday gerbils ( Meriones meridianus ). Male-first did not significantly population, whereas female-first were bolder, faster more explorative than females population. These findings support a boldness/exploration as typical trait, which appears restricted gerbils. Males also differed dynamics after colony establishment. In males, boldness/exploration/sociability peaked newly founded colonies, then sharply decreased subsequent generations consistently decreasing environmental uncertainty ageing colonies. females, greater diminish time post-colonization, i.e. female retained bold/explorative phenotype despite facing less environment. Thus, colonists, unlike carry specialized corresponding proactive coping strategy. link sex differences sex-specific life-history strategies.

Language: Английский

Citations

0