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Waddell JC, Crampton WGR. Reproductive effort and terminal investment in a multi‐species assemblage of Amazon electric fish. ECOL MONOGR 2021. [DOI: 10.1002/ecm.1499] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Joseph C. Waddell
- Department of Biology University of Central Florida 4100 Libra Dr 32816 Orlando FL USA
- Department of Integrative and Computational Neurobiology Instituto de Investigaciones Biológicas Clemente Estable Av. Italia 3318 Montevideo 11600 Uruguay
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2
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Zhou P, He XZ, Chen C, Wang Q. Reproductive Strategies That May Facilitate Invasion Success: Evidence From a Spider Mite. JOURNAL OF ECONOMIC ENTOMOLOGY 2021; 114:632-637. [PMID: 33438024 DOI: 10.1093/jee/toaa313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Indexed: 06/12/2023]
Abstract
With significant surge of international trade in recent decades, increasingly more arthropod species have become established outside their natural range of distribution, causing enormous damage in their novel habitats. However, whether a species can colonize its new environment depends on its ability to overcome various barriers which may result in establishment failure, such as inbreeding depression and difficulty to find mates. Here, we used a haplodiploid pest, Tetranychus ludeni Zacher (Acari: Tetranychidae), which is native to Europe but now cosmopolitan, to investigate whether its reproductive strategies have facilitated its invasion success, providing knowledge to develop programs for prediction and management of biological invasions. We show that inbreeding had no negative influence on female reproductive outputs and longevity over 11 successive generations, allowing mother-son and brother-sister mating to occur at the invasion front without adverse consequences in fitness. Virgin females produced maximum number of sons in their early life to ensure subsequent mother-son mating but later saved resources to prolong longevity for potential future mating. Females maximized their resource allocation to egg production immediately after mating to secure production of maximum number of both daughters and sons as early as possible. Furthermore, mated females with mating delay increased proportion of daughters in offspring produced to compensate the loss of production of daughters during their virgin life. We suggest that the lack of inbreeding depression in successive generations and the ability to adjust resource allocations depending whether and when mating occurs may be the key features that have facilitated its invasion success.
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Affiliation(s)
- Peng Zhou
- School of Agriculture and Environment, Massey University, Private Bag, Palmerston North, New Zealand
| | - Xiong Zhao He
- School of Agriculture and Environment, Massey University, Private Bag, Palmerston North, New Zealand
| | - Chen Chen
- School of Agriculture and Environment, Massey University, Private Bag, Palmerston North, New Zealand
| | - Qiao Wang
- School of Agriculture and Environment, Massey University, Private Bag, Palmerston North, New Zealand
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Reyes-Ramírez A, Enríquez-Vara JN, Rocha-Ortega M, Téllez-García A, Córdoba-Aguilar A. Female choice for sick males over healthy males: Consequences for offspring. Ethology 2019. [DOI: 10.1111/eth.12854] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Alicia Reyes-Ramírez
- Departamento de Ecología Evolutiva, Instituto de Ecología; Ciudad Universitaria, Universidad Nacional Autónoma de México; Distrito Federal México
| | - Jhony N. Enríquez-Vara
- CONACYT-Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco AC; Zapopan Mexico
| | - Maya Rocha-Ortega
- Departamento de Ecología Evolutiva, Instituto de Ecología; Ciudad Universitaria, Universidad Nacional Autónoma de México; Distrito Federal México
| | - Aldo Téllez-García
- Departamento de Ecología Evolutiva, Instituto de Ecología; Ciudad Universitaria, Universidad Nacional Autónoma de México; Distrito Federal México
| | - Alex Córdoba-Aguilar
- Departamento de Ecología Evolutiva, Instituto de Ecología; Ciudad Universitaria, Universidad Nacional Autónoma de México; Distrito Federal México
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Abstract
Although reproductive strategies can be influenced by a variety of intrinsic and extrinsic factors, life history theory provides a rigorous framework for explaining variation in reproductive effort. The terminal investment hypothesis proposes that a decreased expectation of future reproduction (as might arise from a mortality threat) should precipitate increased investment in current reproduction. Terminal investment has been widely studied, and a variety of intrinsic and extrinsic cues that elicit such a response have been identified across an array of taxa. Although terminal investment is often treated as a static strategy, the level at which a cue of decreased future reproduction is sufficient to trigger increased current reproductive effort (i.e., the terminal investment threshold) may depend on context, including the internal state of the organism or its current external environment, independent of the cue that triggers a shift in reproductive investment. Here, we review empirical studies that address the terminal investment hypothesis, exploring both the intrinsic and extrinsic factors that mediate its expression. Based on these studies, we propose a novel framework within which to view the strategy of terminal investment, incorporating factors that influence an individual's residual reproductive value beyond a terminal investment trigger - the dynamic terminal investment threshold.
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5
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Zhang Y, Hood WR. Current versus future reproduction and longevity: a re-evaluation of predictions and mechanisms. J Exp Biol 2016; 219:3177-3189. [PMID: 27802148 PMCID: PMC5091378 DOI: 10.1242/jeb.132183] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Oxidative damage is predicted to be a mediator of trade-offs between current reproduction and future reproduction or survival, but most studies fail to support such predictions. We suggest that two factors underlie the equivocal nature of these findings: (1) investigators typically assume a negative linear relationship between current reproduction and future reproduction or survival, even though this is not consistently shown by empirical studies; and (2) studies often fail to target mechanisms that could link interactions between sequential life-history events. Here, we review common patterns of reproduction, focusing on the relationships between reproductive performance, survival and parity in females. Observations in a range of species show that performance between sequential reproductive events can decline, remain consistent or increase. We describe likely bioenergetic consequences of reproduction that could underlie these changes in fitness, including mechanisms that could be responsible for negative effects being ephemeral, persistent or delayed. Finally, we make recommendations for designing future studies. We encourage investigators to carefully consider additional or alternative measures of bioenergetic function in studies of life-history trade-offs. Such measures include reactive oxygen species production, oxidative repair, mitochondrial biogenesis, cell proliferation, mitochondrial DNA mutation and replication error and, importantly, a measure of the respiratory function to determine whether measured differences in bioenergetic state are associated with a change in the energetic capacity of tissues that could feasibly affect future reproduction or lifespan. More careful consideration of the life-history context and bioenergetic variables will improve our understanding of the mechanisms that underlie the life-history patterns of animals.
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Affiliation(s)
- Yufeng Zhang
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
| | - Wendy R Hood
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
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Surace M, Smith GR. Female Body Size and Reproduction in Western Mosquitofish (Gambusia affinis) from Two Ponds in Central Ohio. Northeast Nat (Steuben) 2016. [DOI: 10.1656/045.023.0101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Gauthey Z, Panserat S, Elosegi A, Herman A, Tentelier C, Labonne J. Experimental evidence of population differences in reproductive investment conditional on environmental stochasticity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 541:143-148. [PMID: 26406108 DOI: 10.1016/j.scitotenv.2015.09.069] [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: 07/25/2015] [Revised: 09/14/2015] [Accepted: 09/14/2015] [Indexed: 06/05/2023]
Abstract
Environmental stochasticity is expected to shape life histories of species, wherein organisms subjected to strong environmental variation should display adaptive response by being able to tune their reproductive investment. For riverine ecosystems, climate models forecast an increase in the frequency and intensity of extreme events such as floods and droughts. The speed and the mechanisms by which organisms may adapt their reproductive investment are therefore of primary importance to understand how species will cope with such radical environmental changes. In the present study, we sampled spawners from two different populations of wild brown trout, originating from two environments with contrasting levels of flow stochasticity. We placed them in sympatry within an experimental channel during reproductive season. In one modality, water flow was maintained constant, whereas in another modality, water flow was highly variable. Reproductive investment of all individuals was monitored using weight and energetic plasma metabolite variation throughout the reproductive season. Only the populations originating from the most variable environment showed a plastic response to experimental manipulation of water flow, the females being able to reduce their weight variation (from 19.2% to 13.1%) and metabolites variations (from 84.2% to 18.6% for triglycerides for instance) under variable flow conditions. These results imply that mechanisms to cope with environmental stochasticity can differ between populations of the same species, where some populations can be plastic whereas other cannot.
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Affiliation(s)
- Zoé Gauthey
- INRA, UMR 1224, Ecologie Comportementale et Biologie des Populations de Poissons, Aquapôle, quartier Ibarron, 64310 Saint-Pée sur Nivelle, France; Univ Pau & Pays Adour, UMR 1224, Ecologie Comportementale et Biologie des Populations de Poissons, UFR Sciences et Techniques de la Côte Basque, Allée du parc Montaury, 64600 Anglet, France
| | - Stéphane Panserat
- INRA, UR 107, Nutrition Metabolism Aquaculture, Aquapôle, 64310 Saint Pée sur Nivelle, France
| | - Arturo Elosegi
- Faculty of Science and Technology, University of the Basque Country UPV/EHU, 48080 Bilbao, Spain
| | - Alexandre Herman
- INRA, UR 107, Nutrition Metabolism Aquaculture, Aquapôle, 64310 Saint Pée sur Nivelle, France
| | - Cédric Tentelier
- INRA, UMR 1224, Ecologie Comportementale et Biologie des Populations de Poissons, Aquapôle, quartier Ibarron, 64310 Saint-Pée sur Nivelle, France; Univ Pau & Pays Adour, UMR 1224, Ecologie Comportementale et Biologie des Populations de Poissons, UFR Sciences et Techniques de la Côte Basque, Allée du parc Montaury, 64600 Anglet, France
| | - Jacques Labonne
- INRA, UMR 1224, Ecologie Comportementale et Biologie des Populations de Poissons, Aquapôle, quartier Ibarron, 64310 Saint-Pée sur Nivelle, France; Univ Pau & Pays Adour, UMR 1224, Ecologie Comportementale et Biologie des Populations de Poissons, UFR Sciences et Techniques de la Côte Basque, Allée du parc Montaury, 64600 Anglet, France.
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O’Dea RE, Vega-Trejo R, Head ML, Jennions MD. Maternal effects on offspring size and number in mosquitofish, Gambusia holbrooki. Ecol Evol 2015; 5:2945-55. [PMID: 26306178 PMCID: PMC4541997 DOI: 10.1002/ece3.1577] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Revised: 05/20/2015] [Accepted: 06/03/2015] [Indexed: 11/30/2022] Open
Abstract
Given a trade-off between offspring size and number, all mothers are predicted to produce the same optimal-sized offspring in a given environment. In many species, however, larger and/or older mothers produce bigger offspring. There are several hypotheses to explain this but they lack strong empirical support. In organisms with indeterminate growth, there is the additional problem that maternal size and age are positively correlated, so what are their relative roles in determining offspring size? To investigate this, we measured the natural relationship between maternal and offspring size in a wild population of Gambusia holbrooki (eastern mosquitofish), and experimentally disentangled the effects of maternal age and size on offspring size in the laboratory. In combination, our data indicate that the relationship between maternal and offspring size is nonlinear. Small mothers seem to produce larger than average offspring due to integer effects associated with very small broods. For extremely large mothers, which were only sampled in our wild data, these larger than average offspring may result from greater maternal resources or age effects. However, maternal age had no effect on offspring size or number in the laboratory experiment. Our results highlight the importance of sampling the full size-range of mothers when investigating maternal effects on offspring size. They also point to the difficulty of experimentally manipulating maternal size, because any change in size is invariably associated with a change in at least one factor affecting growth (be it temperature, food availability, or density) that might also have an indirect effect on offspring size.
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Affiliation(s)
- Rose E O’Dea
- Evolution, Ecology and Genetics, Research School of Biology, Australian National UniversityCanberra, ACT, Australia
| | - Regina Vega-Trejo
- Evolution, Ecology and Genetics, Research School of Biology, Australian National UniversityCanberra, ACT, Australia
| | - Megan L Head
- Evolution, Ecology and Genetics, Research School of Biology, Australian National UniversityCanberra, ACT, Australia
| | - Michael D Jennions
- Evolution, Ecology and Genetics, Research School of Biology, Australian National UniversityCanberra, ACT, Australia
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