Evolution of dispersal syndrome and its corresponding metabolomic changes

Tung, Sudipta; Mishra, Abhishek; Gogna, Navdeep; Sadiq, Mohammed Aamir; Shreenidhi, P. M.; Sruti, V. R. Shree; Dorai, Kavita; Dey, Sutirth

doi:10.1101/178715

Cited by 12 publications

(16 citation statements)

References 111 publications

(101 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As expected from previous studies (Tung, Mishra, Gogna, et al, 2018; Tung, Mishra, Shreenidhi, et al, 2018), the minimum adequate model (MAM) for dispersal propensity revealed a significant main effect of dispersal selection ( t = −5.99, p < 10 –5 ), with VB individuals being more dispersive than VBC individuals. The effects of both sex and dispersal selection × sex interaction were found to be non‐significant at various stages of model selection (Text S2.1), thereby excluding them from the MAM.…”

Section: Resultssupporting

confidence: 80%

“…VB 4 undergoes selection for higher dispersal every generation, while VBC 4 serves as its corresponding control (Tung, Mishra, Shreenidhi, et al, 2018). As a result of this selection, VB flies have evolved a higher dispersal propensity (see Section 2.5 below) and locomotor activity than the corresponding VBC flies (Tung, Mishra, Gogna, et al, 2018; Tung, Mishra, Shreenidhi, et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Mate‐finding dispersal reduces local mate limitation and sex bias in dispersal

Mishra

Tung

Sruti

et al. 2020

Journal of Animal Ecology

Self Cite

View full text Add to dashboard Cite

Sex‐biased dispersal (SBD) often skews the local sex ratio in a population. This can result in a shortage of mates for individuals of the less‐dispersive sex. Such mate limitation can lead to Allee effects in populations that are small or undergoing range expansion, consequently affecting their survival, growth, stability and invasion speed. Theory predicts that mate shortage can lead to either an increase or a decrease in the dispersal of the less‐dispersive sex. However, neither of these predictions have been empirically validated. To investigate how SBD‐induced mate limitation affects dispersal of the less‐dispersive sex, we used Drosophila melanogaster populations with varying dispersal propensities. To rule out any mate‐independent density effects, we examined the behavioural plasticity of dispersal in the presence of mates as well as same‐sex individuals with differential dispersal capabilities. In the presence of high‐dispersive mates, the dispersal of both male and female individuals was significantly increased. However, the magnitude of this increase was much larger in males than in females, indicating that the former shows greater mate‐finding dispersal. Moreover, the dispersal of either sex did not change when dispersing alongside high‐ or low‐dispersive individuals of the same sex. This suggested that the observed plasticity in dispersal was indeed due to mate‐finding dispersal, and not mate‐independent density effects. Strong mate‐finding dispersal can diminish the magnitude of sex bias in dispersal. This can modulate the evolutionary processes that shape range expansions and invasions, depending on the population size. In small populations, mate‐finding dispersal can ameliorate Allee effects. However, in large populations, it can dilute the effects of spatial sorting.

show abstract

Section: Resultssupporting

confidence: 80%

Section: Methodsmentioning

confidence: 99%

Mate‐finding dispersal reduces local mate limitation and sex bias in dispersal

Mishra

Tung

Sruti

et al. 2020

Journal of Animal Ecology

Self Cite

View full text Add to dashboard Cite

show abstract

“…1, see also Supplementary Figure 1 for fecundity at 24h). Our findings in our one generation experiment are here similar to those of Tung et al (2018) in Drosophila melanogaster after several generations of selection for dispersal. They suggested that this stability of body size and fecundity despite the constitutive and induced costs of dispersal was offset by a shorter lifespan; our experiment was not designed to test this hypothesis.…”

Section: Discussionsupporting

confidence: 85%

“…Metabolic profile changes in response to stress exposure, and their (putative) functional roles, have been extensively documented, especially in arthropods (Bundy et al, 2008; Steinberg, 2012; Teets and Denlinger, 2013). In contrast, metabolite differences between dispersers and residents even in interaction with the environment- are surprisingly understudied, compared to other phenotypic differences (Cote et al, 2017; Ronce and Clobert, 2012; but see Tung et al, 2018; Van Petegem et al, 2016).…”

Section: Introductionmentioning

confidence: 98%

The distinct phenotypic signatures of dispersal and stress in an arthropod model: from physiology to life history

Dahirel

Masier

Renault

et al. 2019

Preprint

View full text Add to dashboard Cite

Dispersing individuals are expected to encounter costs during transfer and in the novel environment, and may also have experienced stress in their natal patch. Given this, a non-random subset of the population should engage in dispersal and eventually show divergent stress-related responses towards new conditions. Dispersal allows escape from stress, but is equally subjecting individuals to it.Physiological shifts expressed in the metabolome form a major part of responses to stress exposure and are expected to be associated with the dispersal phenotype, thereby shaping physiological dispersal syndromes. We analyzed how metabolic profiles and life-history traits varied between dispersers and residents of the model two-spotted spider miteTetranychus urticae, and whether and how these syndromes varied with exposure to a stressful new host plant (tomato). Regardless of the effect of host plant, we found a physiological dispersal syndrome where, relative to philopatric individuals, dispersers were characterized by lower leaf consumption rates and a lower concentration of several amino acids, indicating a potential dispersal-foraging trade-off. As a possible consequence of this lower food intake, dispersers also showed a lower reproductive performance. Responses to tomato exposure were consistent with this plant being a stressor forTetranychus urticae, including reduced fecundity and reduced feeding by mites. Tomato-exposed mites laid larger eggs, which can be interpreted as a plastic response to food stress, increasing the likelihood of survival to maturity. Contrary to what could be expected from the costs of dispersal and stress resistance and from previous meta-population level studies, there was no interaction between dispersal status and host plant for any of the examined traits, indicating that the impacts of a new stressful host plant are equally incurred by residents and dispersers.We thus provide novel insights in the processes that shape dispersal and the putative feedbacks on ecological dynamics in spatially structured populations.

show abstract

“…This finding is consistent with the theory that individuals of a population that forage on the same resources can differ on the genetic level in how these resources are metabolized and that these differences influence their movement behavior [137]. In Drosophila that were artificially selected for increased dispersal, higher amounts of octopamine and serotonin were detected [161]. These neurotransmitters are associated with an elevated exploratory behavior in animals, while octopamine is also known to be important when energy reserves have to be mobilized [162,163].…”

Section: Using Metabolomics and Gene-editing To Find And Validate Keysupporting

confidence: 86%

The physiology of movement

et al. 2020

View full text Add to dashboard Cite

Movement, from foraging to migration, is known to be under the influence of the environment. The translation of environmental cues to individual movement decision making is determined by an individual's internal state and anticipated to balance costs and benefits. General body condition, metabolic and hormonal physiology mechanistically underpin this internal state. These physiological determinants are tightly, and often genetically linked with each other and hence central to a mechanistic understanding of movement. We here synthesise the available evidence of the physiological drivers and signatures of movement and review (1) how physiological state as measured in its most coarse way by body condition correlates with movement decisions during foraging, migration and dispersal, (2) how hormonal changes underlie changes in these movement strategies and (3) how these can be linked to molecular pathways. We reveale that a high body condition facilitates the efficiency of routine foraging, dispersal and migration. Dispersal decision making is, however, in some cases stimulated by a decreased individual condition. Many of the biotic and abiotic stressors that induce movement initiate a physiological cascade in vertebrates through the production of stress hormones. Movement is therefore associated with hormone levels in vertebrates but also insects, often in interaction with factors related to body or social condition. The underlying molecular and physiological mechanisms are currently studied in few model species, and show-in congruence with our insights on the role of body condition-a central role of energy metabolism during glycolysis, and the coupling with timing processes during migration. Molecular insights into the physiological basis of movement remain, however, highly refractory. We finalise this review with a critical reflection on the importance of these physiological feedbacks for a better mechanistic understanding of movement and its effects on ecological dynamics at all levels of biological organization.

show abstract

Evolution of dispersal syndrome and its corresponding metabolomic changes

Cited by 12 publications

References 111 publications

Mate‐finding dispersal reduces local mate limitation and sex bias in dispersal

Mate‐finding dispersal reduces local mate limitation and sex bias in dispersal

The distinct phenotypic signatures of dispersal and stress in an arthropod model: from physiology to life history

The physiology of movement

Contact Info

Product

Resources

About