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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Sex-biased dispersal depends on the spatial scale in a tube-building amphipod

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Author(s):
Peres, Pedro A. [1, 2] ; Ferreira, Ana Paula [2] ; Machado, Glauco B. O. [3] ; Azevedo-Silva, Marianne [2] ; Siqueira, Silvana G. L. [4] ; Leite, Fosca P. P. [4]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Fac Philosophy Sci & Letters Ribeirao Preto FFCLR, Dept Biol, BR-14040901 Ribeirao Preto, SP - Brazil
[2] Univ Estadual Campinas, Programa Posgrad Ecol, UNICAMP, BR-13083862 Campinas, SP - Brazil
[3] Sao Paulo State Univ UNESP, Biosci Inst, Coastal Campus, BR-11330900 Sao Vicente, SP - Brazil
[4] Univ Estadual Campinas, Inst Biol, Dept Anim Biol, UNICAMP, BR-13083862 Campinas, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: MARINE ECOLOGY-PROGRESS SERIES; v. 658, p. 135-148, JAN 21 2021.
Web of Science Citations: 0
Abstract

Behavioral differences between males and females can lead to sex-biased dispersal (SBD), and tube-building amphipods are good model organisms to study this process. Depending on the species, males or females have a different affinity to their tubes, and one sex may be more mobile than the other. This distinct dispersal behavior and the scales at which it occurs are not fully understood. Here, we tested the SBD hypothesis at different spatial scales in Cymadusa filosa using direct and indirect approaches. We conducted laboratory (small scale) and field experiments (local scale), and molecular analyses (local and large scale). Laboratory experiments indicated male-biased dispersal over small scales (cm), whereas over local scales (m), field experiments showed similar colonization rates of previously cleaned fronds for both males and females, suggesting no SBD. A higher proportion of juveniles than expected had colonized these fronds, suggesting that juveniles have higher dispersal rates than adults. Also, neighboring individuals were not more genetically related than spatially distant individuals. Over large scales (km), molecular analyses did not indicate SBD, and there were no differences in genetic structure between sexes. Our results showed that SBD depends on the spatial scale. Combining different approaches, we showed that the dispersal of males and females over local and large scales is sufficient to cause a lack of genetic differentiation within each sex, despite small-scale SBD. (AU)

FAPESP's process: 17/16645-1 - Molecular ecology of neotropical ants
Grantee:Paulo Sergio Moreira Carvalho de Oliveira
Support Opportunities: BIOTA-FAPESP Program - Regular Research Grants
FAPESP's process: 14/15614-7 - Herbivorous amphipods and algae interactions: does the identity of the host algae influences on the populations genetic structure?
Grantee:Pedro Augusto da Silva Peres
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 18/10313-0 - Build-up of scientific collections of marine invertebrates: strategies for biodiversity conservation
Grantee:Antonia Cecília Zacagnini Amaral
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 14/23141-1 - Ecology of interactions, behavioral ecology, and genetics of neotropical ant populations
Grantee:Paulo Sergio Moreira Carvalho de Oliveira
Support Opportunities: BIOTA-FAPESP Program - Regular Research Grants
FAPESP's process: 17/18291-2 - Biodiversity and molecular ecology of ants (Hymenoptera: Formicidae) along a latitudinal gradient in the Cerrado
Grantee:Marianne Azevedo Silva
Support Opportunities: Scholarships in Brazil - Doctorate