Sex-Specific Patterns of Movement and Space Use in the  Strawberry Poison Frog, Oophaga pumilio

Murasaki, Seiichi

doi:10.25148/etd.fi10080418

Cited by 3 publications

(5 citation statements)

References 34 publications

(37 reference statements)

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“…Overall, O. sylvatica showed more restricted movements than the two species with predominantly male parental care. Several previous studies in poison frogs indicate that species with extended female care, which includes tadpole provisioning, show more restricted space use than closely related species with male uniparental care ( Brown et al, 2009 ; Donnelly, 1989 ; McVey et al, 1981 ; Murasaki, 2010 ; Pašukonis et al, 2019 ; Summers, 1992 ). Our data confirm that sex and species differences in space use across poison frogs can be largely explained by species differences in the care-providing sex and the intensity of parental care.…”

Section: Discussionmentioning

confidence: 92%

Contrasting parental roles shape sex differences in poison frog space use but not navigational performance

Pašukonis

Rojas

Fischer

et al. 2022

eLife

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Sex differences in vertebrate spatial abilities are typically interpreted under the adaptive specialization hypothesis, which posits that male reproductive success is linked to larger home ranges and better navigational skills. The androgen spillover hypothesis counters that enhanced male spatial performance may be a byproduct of higher androgen levels. Animal groups that include species where females are expected to outperform males based on life-history traits are key for disentangling these hypotheses. We investigated the association between sex differences in reproductive strategies, spatial behavior, and androgen levels in three species of poison frogs. We tracked individuals in natural environments to show that contrasting parental sex roles shape sex differences in space use, where the sex performing parental duties shows wider-ranging movements. We then translocated frogs from their home areas to test their navigational performance and found that the caring sex outperformed the non-caring sex only in one out of three species. In addition, males across species displayed more explorative behavior than females and androgen levels correlated with explorative behavior and homing accuracy. Overall, we reveal that poison frog reproductive strategies shape movement patterns but not necessarily navigational performance. Together this work suggests that prevailing adaptive hypotheses provide an incomplete explanation of sex differences in spatial abilities.

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Section: Discussionmentioning

confidence: 92%

Contrasting parental roles shape sex differences in poison frog space use but not navigational performance

Pašukonis

Rojas

Fischer

et al. 2022

eLife

View full text Add to dashboard Cite

show abstract

“…Overall, O. sylvatica showed more restricted movements than the two species with predominantly male parental care. Several previous studies in poison frogs indicate that species with extended female care, which includes tadpole provisioning, show more restricted space use than closely related species with male uniparental care (Brown et al, 2009; Donnelly, 1989; McVey et al, 1981; Murasaki, 2010; Pašukonis et al, 2019; Summers, 1992). Our data confirm that sex and species differences in space use across poison frogs can be explained, in big part, by species differences in the care-providing sex and the intensity of parental care.…”

Section: Discussionmentioning

confidence: 92%

Contrasting parental roles shape sex differences in poison frog space use but not navigational performance

Pašukonis

Rojas

Fischer

et al. 2022

Preprint

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Sex differences in vertebrate spatial abilities are typically interpreted under the adaptive specialization hypothesis, which posits that male reproductive success is linked to larger home ranges and better navigational skills. The androgen spillover hypothesis counters that enhanced male spatial performance may be a byproduct of higher androgen levels. Animal groups that include species where females are expected to outperform males based on life-history traits are key for disentangling these hypotheses. We investigated the association between sex differences in reproductive strategies, spatial behavior, and androgen levels in three species of poison frogs. We tracked individuals in natural environments to show that contrasting parental sex roles shape sex differences in space use, where the sex performing parental duties shows wider-ranging movements. We then translocated frogs from their home areas to test their navigational performance and found that the caring sex outperformed the non-caring sex only in one out of three species. In addition, males across species displayed more explorative behavior than females. Furthermore, androgen levels correlated with explorative behavior and homing accuracy. Our findings suggest that poison frog reproductive strategies shape space use patterns but not navigational performance, providing counterevidence to the prevailing view of adaptive sex differences in spatial abilities.

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“…Pröhl and Hödl () found that maternal investment of O. pumilio is higher in females than males, that females are selective when choosing mates, and that there is significant variance in reproductive success of males (Pröhl & Hödl, ); together, these observations suggest that female mate choice is an important factor influencing fitness. Females also have larger home ranges than males (Donnelly, ; Pröhl & Hödl, ), which may increase access to males when selecting mates (Murasaki, ). If social interactions such as female mate choice are important factors influencing the fitness of O. pumilio , then females with behavioral phenotypes that associate more and interact better with neighboring individuals may have greater fitness relative to individuals lacking these traits or exhibiting them to a lesser degree.…”

Section: Discussionmentioning

confidence: 99%

“…Nonrandom patterns of migrant females and resident males may be driven by mate choice. Females have larger home‐range areas than males, which may allow females the opportunity to carefully select mates (Donnelly, ; Murasaki, ). Migrant females may space themselves more uniformly relative to resident males, and greater spacing relative to males would allow access to more individuals from which to choose during reproduction.…”

Section: Discussionmentioning

confidence: 99%

“…However, some males use alternative, noncalling mating tactics to parasitize advertising territorial males (i.e., satellite males; Meuche & Pröhl, ). Home‐range size of females is larger than that of males (Donnelly, ; Pröhl & Hödl, ; Savage, ), is independent of density (Donnelly, ), and may, in part, provide females access to bromeliads and mates (Murasaki, ). The species’ mating system has been described as sequential polygamy comprising sequential and simultaneous polygyny and sequential polyandry (Pröhl & Hödl, ).…”

Section: Methodsmentioning

confidence: 99%

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Spatial patterns of the frog Oophaga pumilio in a plantation system are consistent with conspecific attraction

Folt

Donnelly

Guyer

2018

Ecology and Evolution

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The conspecific attraction hypothesis predicts that individuals are attracted to conspecifics because conspecifics may be cues to quality habitat and/or colonists may benefit from living in aggregations. Poison frogs (Dendrobatidae) are aposematic, territorial, and visually oriented—three characteristics which make dendrobatids an appropriate model to test for conspecific attraction. In this study, we tested this hypothesis using an extensive mark‐recapture dataset of the strawberry poison frog (Oophaga pumilio) from La Selva Biological Station, Costa Rica. Data were collected from replicate populations in a relatively homogenous Theobroma cacao plantation, which provided a unique opportunity to test how conspecifics influence the spatial ecology of migrants in a controlled habitat with homogenous structure. We predicted that (1) individuals entering a population would aggregate with resident adults, (2) migrants would share sites with residents at a greater frequency than expected by chance, and (3) migrant home ranges would have shorter nearest‐neighbor distances (NND) to residents than expected by chance. The results were consistent with these three predictions: Relative to random simulations, we observed significant aggregation, home‐range overlap, and NND distribution functions in four, five, and six, respectively, of the six migrant–resident groups analyzed. Conspecific attraction may benefit migrant O. pumilio by providing cues to suitable home sites and/or increasing the potential for social interactions with conspecifics; if true, these benefits should outweigh the negative effects of other factors associated with aggregation. The observed aggregation between migrant and resident O. pumilio is consistent with conspecific attraction in dendrobatid frogs, and our study provides rare support from a field setting that conspecific attraction may be a relevant mechanism for models of anuran spatial ecology.

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Sex-Specific Patterns of Movement and Space Use in the Strawberry Poison Frog, Oophaga pumilio

Cited by 3 publications

References 34 publications

Contrasting parental roles shape sex differences in poison frog space use but not navigational performance

Contrasting parental roles shape sex differences in poison frog space use but not navigational performance

Contrasting parental roles shape sex differences in poison frog space use but not navigational performance

Spatial patterns of the frog Oophaga pumilio in a plantation system are consistent with conspecific attraction

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