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Pre-maturation social experience affects female reproductive strategies and offspring quality in a highly polyandrous insect. Behav Ecol Sociobiol 2020. [DOI: 10.1007/s00265-020-02917-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Horváth G, Rodríguez‐Ruiz G, Martín J, López P, Herczeg G. Maternal diet affects juvenile Carpetan rock lizard performance and personality. Ecol Evol 2019; 9:14476-14488. [PMID: 31938534 PMCID: PMC6953655 DOI: 10.1002/ece3.5882] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/14/2019] [Accepted: 11/03/2019] [Indexed: 11/07/2022] Open
Abstract
Differences in both stable and labile state variables are known to affect the emergence and maintenance of consistent interindividual behavioral variation (animal personality or behavioral syndrome), especially when experienced early in life. Variation in environmental conditions experienced by gestating mothers (viz. nongenetic maternal effects) is known to have significant impact on offspring condition and behavior; yet, their effect on behavioral consistency is not clear. Here, by applying an orthogonal experimental design, we aimed to study whether increased vitamin D3 content in maternal diet during gestation (vitamin-supplemented vs. vitamin control treatments) combined with corticosterone treatment (corticosterone-treated vs. corticosterone control treatments) applied on freshly hatched juveniles had an effect on individual state and behavioral consistency of juvenile Carpetan rock lizards (Iberolacerta cyreni). We tested the effect of our treatments on (a) climbing speed and the following levels of behavioral variation, (b) strength of animal personality (behavioral repeatability), (c) behavioral type (individual mean behavior), and (d) behavioral predictability (within-individual behavioral variation unrelated to environmental change). We found higher locomotor performance of juveniles from the vitamin-supplemented group (42.4% increase), irrespective of corticosterone treatment. While activity personality was present in all treatments, shelter use personality was present only in the vitamin-supplemented × corticosterone-treated treatment and risk-taking personality was present in corticosterone control treatments. Contrary to our expectations, behavioral type was not affected by our treatments, indicating that individual quality can affect behavioral strategies without affecting group-level mean behavior. Behavioral predictability decreased in individuals with low climbing speed, which could be interpreted as a form of antipredator strategy. Our results clearly demonstrate that maternal diet and corticosterone treatment have the potential to induce or hamper between-individual variation in different components of boldness, often in interactions.
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Affiliation(s)
- Gergely Horváth
- Behavioural Ecology GroupDepartment of Systematic Zoology and EcologyEötvös Loránd UniversityBudapestHungary
| | | | - José Martín
- Department of Evolutionary EcologyMuseo Nacional de Ciencias NaturalesCSICMadridSpain
| | - Pilar López
- Department of Evolutionary EcologyMuseo Nacional de Ciencias NaturalesCSICMadridSpain
| | - Gábor Herczeg
- Behavioural Ecology GroupDepartment of Systematic Zoology and EcologyEötvös Loránd UniversityBudapestHungary
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Thiebot JB, Bost CA, Dehnhard N, Demongin L, Eens M, Lepoint G, Cherel Y, Poisbleau M. Mates but not sexes differ in migratory niche in a monogamous penguin species. Biol Lett 2016; 11:20150429. [PMID: 26562934 DOI: 10.1098/rsbl.2015.0429] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Strong pair bonds generally increase fitness in monogamous organisms, but may also underlie the risk of hampering it when re-pairing fails after the winter season. We investigated whether partners would either maintain contact or offset this risk by exploiting sex-specific favourable niches during winter in a migratory monogamous seabird, the southern rockhopper penguin Eudyptes chrysocome. Using light-based geolocation, we show that although the spatial distribution of both sexes largely overlapped, pair-wise mates were located on average 595 ± 260 km (and up to 2500 km) apart during winter. Stable isotope data also indicated a marked overlap between sex-specific isotopic niches (δ¹³C and δ¹⁵N values) but a segregation of the feeding habitats (δ¹³C values) within pairs. Importantly, the tracked females remained longer (12 days) at sea than males, but all re-mated with their previous partners after winter. Our study provides multiple evidence that migratory species may well demonstrate pair-wise segregation even in the absence of sex-specific winter niches (spatial and isotopic). We suggest that dispersive migration patterns with sex-biased timings may be a sufficient proximal cause for generating such a situation in migratory animals.
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Weigel EG, Tinghitella RM, Boughman JW. No evidence for adjustment of maternal investment under alternative mate availability regimes. JOURNAL OF FISH BIOLOGY 2016; 88:508-522. [PMID: 26508506 DOI: 10.1111/jfb.12793] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 09/07/2015] [Indexed: 06/05/2023]
Abstract
Using treatments that mimic high and low availability of reproductive males, it was found that female three-spined sticklebacks Gasterosteus aculeatus, previously shown to adjust their mate choices when male mates were rare, did not alter their reproductive investment strategies. These results suggest that plasticity in investment is perhaps limited by physiological requirements or dependent on relatively extreme mate availability regimes. The probability of becoming reproductive, number of clutches per season (per female), initial clutch size and mass and the timing of reproduction were all independent of the experience a female had with mate availability. This suggests that pre-copulatory plasticity in reproductive strategies may contribute more to variation in the strength and direction of sexual selection than reproductive investment in offspring.
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Affiliation(s)
- E G Weigel
- Department of Zoology, Michigan State University, 288 Farm Lane Road RM 203, East Lansing, MI 48824, U.S.A
- BEACON Center for the Study of Evolution in Action, Michigan State University, Biomedical and Physical Sciences Building, 567 Wilson Road Room 1441, East Lansing, MI 48824, U.S.A
| | - R M Tinghitella
- Department of Biological Sciences, University of Denver, F. W. Olin Hall, Room 102, 2190 E. Iliff Ave, Denver, CO 80208-9010, U.S.A
| | - J W Boughman
- Department of Zoology, Michigan State University, 288 Farm Lane Road RM 203, East Lansing, MI 48824, U.S.A
- BEACON Center for the Study of Evolution in Action, Michigan State University, Biomedical and Physical Sciences Building, 567 Wilson Road Room 1441, East Lansing, MI 48824, U.S.A
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Poisbleau M, Dehnhard N, Demongin L, Quillfeldt P, Eens M. Two eggs, two different constraints: a potential explanation for the puzzling intraclutch egg size dimorphism in Eudyptes penguins. Ecol Evol 2015; 5:2827-38. [PMID: 26306169 PMCID: PMC4541988 DOI: 10.1002/ece3.1543] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 05/05/2015] [Accepted: 05/18/2015] [Indexed: 11/25/2022] Open
Abstract
Phenotypic plasticity and phenotypic stability are major components of the adaptive evolution of organisms to environmental variation. The invariant two-egg clutch size of Eudyptes penguins has recently been proposed to be a unique example of a maladaptive phenotypic stability, while their egg mass is a plastic trait. We tested whether this phenotypic plasticity during reproduction might result from constraints imposed by migration (migratory carry-over effect) and breeding (due to the depletion of female body reserves). For the first time, we examined whether these constraints differ between eggs within clutches and between egg components (yolk and albumen). The interval between colony return and clutch initiation positively influenced the yolk mass, the albumen mass, and the subsequent total egg mass of first-laid eggs. This time interval had only a slight negative influence on the yolk mass of second-laid eggs and no influence on their albumen and subsequent total masses. For both eggs, female body mass at laying positively influenced albumen and total egg masses. Female investment into the entire clutch was not related to the time in the colony before laying but increased with female body mass. These novel results suggest that the unique intraclutch egg size dimorphism exhibited in Eudyptes penguins, with first-laid eggs being consistently smaller than second-laid eggs, might be due to a combination of constraints: a migratory carry-over effect on the first-laid egg and a body reserve depletion effect on the second-laid egg. Both these constraints might explain why the timing of reproduction, especially egg formation, is narrow in migratory capital breeders.
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Affiliation(s)
- Maud Poisbleau
- Department of Biology - Ethology, University of Antwerp Campus Drie Eiken, Universiteitsplein 1, 2610, Antwerp, Wilrijk, Belgium ; Max Planck Institute for Ornithology, Department of Migration and Immuno-Ecology, Am Obstberg 1 78315, Radolfzell, Germany ; Department of Biology, University of Konstanz 78457, Konstanz, Germany
| | - Nina Dehnhard
- Department of Biology - Ethology, University of Antwerp Campus Drie Eiken, Universiteitsplein 1, 2610, Antwerp, Wilrijk, Belgium ; Max Planck Institute for Ornithology, Department of Migration and Immuno-Ecology, Am Obstberg 1 78315, Radolfzell, Germany ; Department of Biology, University of Konstanz 78457, Konstanz, Germany
| | - Laurent Demongin
- Department of Biology - Ethology, University of Antwerp Campus Drie Eiken, Universiteitsplein 1, 2610, Antwerp, Wilrijk, Belgium
| | - Petra Quillfeldt
- Max Planck Institute for Ornithology, Department of Migration and Immuno-Ecology, Am Obstberg 1 78315, Radolfzell, Germany ; Department of Biology, University of Konstanz 78457, Konstanz, Germany ; Department of Animal Ecology & Systematics, Justus-Liebig University Gießen Heinrich-Buff-Ring 38, 35392, Gießen, Germany
| | - Marcel Eens
- Department of Biology - Ethology, University of Antwerp Campus Drie Eiken, Universiteitsplein 1, 2610, Antwerp, Wilrijk, Belgium
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Dehnhard N, Eens M, Demongin L, Quillfeldt P, Poisbleau M. Individual consistency and phenotypic plasticity in rockhopper penguins: female but not male body mass links environmental conditions to reproductive investment. PLoS One 2015; 10:e0128776. [PMID: 26030824 PMCID: PMC4452512 DOI: 10.1371/journal.pone.0128776] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 04/30/2015] [Indexed: 12/21/2022] Open
Abstract
In marine habitats, increasing ocean temperatures due to global climate change may distinctly reduce nutrient and consequently food availability for seabirds. Food availability is a known driver of body mass and reproductive investment in birds, but these traits may also depend on individual effects. Penguins show extreme intra-annual body mass variation and rely on accumulated body reserves for successful breeding. However, no study so far has tested individual consistency and phenotypic responses in body mass and reproductive investment in this taxon. Using a unique dataset on individually marked female and male southern rockhopper penguins (Eudyptes chrysocome chrysocome) across six years, we investigated 1) the individual consistency in body mass (measured at egg laying), body condition and reproductive investment across years, subsequently 2) identified the best-explanatory temperature-related environmental variables for female and male body mass, and 3) tested the effect of female and male body mass on reproductive investment. Body mass, body condition and reproductive investment were all highly repeatable. As body condition should control for the structural size of the birds, the similarly high repeatability estimates for body mass and body condition suggested that the consistent between-individual body mass differences were independent of structural size. This supported the use of body mass for the subsequent analyses. Body mass was higher under colder environmental conditions (positive Southern Annular Mode), but the overall phenotypic response appeared limited. Reproductive investment increased with female but not male body mass. While environmental effects on body mass in our study period were rather small, one can expect that ongoing global climate change will lead to a deterioration of food availability and we might therefore in the long-term expect a phenotypical decline in body mass and reproductive investment.
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Affiliation(s)
- Nina Dehnhard
- University of Antwerp, Department Biology—Ethology, Campus Drie Eiken, Universiteitsplein 1, Antwerp (Wilrijk), Belgium
- Max Planck Institute for Ornithology, Department of Migration and Immuno-Ecology, Am Obstberg 1, Radolfzell, Germany
- University of Konstanz, Department of Biology, Konstanz, Germany
| | - Marcel Eens
- University of Antwerp, Department Biology—Ethology, Campus Drie Eiken, Universiteitsplein 1, Antwerp (Wilrijk), Belgium
| | - Laurent Demongin
- University of Antwerp, Department Biology—Ethology, Campus Drie Eiken, Universiteitsplein 1, Antwerp (Wilrijk), Belgium
- Max Planck Institute for Ornithology, Department of Migration and Immuno-Ecology, Am Obstberg 1, Radolfzell, Germany
- University of Konstanz, Department of Biology, Konstanz, Germany
| | - Petra Quillfeldt
- Max Planck Institute for Ornithology, Department of Migration and Immuno-Ecology, Am Obstberg 1, Radolfzell, Germany
- University of Konstanz, Department of Biology, Konstanz, Germany
- Justus-Liebig University Gießen, Department of Animal Ecology & Systematics, Heinrich-Buff-Ring 38, Gießen, Germany
| | - Maud Poisbleau
- University of Antwerp, Department Biology—Ethology, Campus Drie Eiken, Universiteitsplein 1, Antwerp (Wilrijk), Belgium
- Max Planck Institute for Ornithology, Department of Migration and Immuno-Ecology, Am Obstberg 1, Radolfzell, Germany
- University of Konstanz, Department of Biology, Konstanz, Germany
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