Superfetation increases total fecundity in a viviparous fish regardless of the ecological context

Zúñiga‐Vega, J. Jaime; Olivera-Tlahuel, Claudia; Molina-Moctezuma, Alejandro

doi:10.1016/j.actao.2017.08.002

Cited by 12 publications

(10 citation statements)

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“…Second, most studies examining the effects of population density on life history have been conducted in species that lack superfetation (e.g., Smith, 2007;Reznick et al, 2012). The ability to carry multiple broods simultaneously in P. prolifica might confer advantages that alter the effect of population density on life history (Zúñiga-Vega et al, 2017). For example, higher superfetation is related to higher reproductive allocation in other livebearing fishes (Zúñiga-Vega et al, 2017), and it has been suggested that superfetation allows these species to overcome morphological constraints in terms of reproductive investment (Frías-Alvarez and Zúñiga-Vega, 2016; Zúñiga-Vega et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…The ability to carry multiple broods simultaneously in P. prolifica might confer advantages that alter the effect of population density on life history (Zúñiga-Vega et al, 2017). For example, higher superfetation is related to higher reproductive allocation in other livebearing fishes (Zúñiga-Vega et al, 2017), and it has been suggested that superfetation allows these species to overcome morphological constraints in terms of reproductive investment (Frías-Alvarez and Zúñiga-Vega, 2016; Zúñiga-Vega et al, 2017). Thus, it is possible that species that superfetate can have more offspring without the typical trade-off relative to nonsuperfetating species (Olivera-Tlahuel et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

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What Drives Life-History Variation in the Livebearing Fish Poeciliopsis prolifica? An Assessment of Multiple Putative Selective Agents

et al. 2021

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Life-history traits are directly linked to fitness, and therefore, can be highly adaptive. Livebearers have been used as models for understanding the evolution of life histories due to their wide diversity in these traits. Several different selective pressures, including population density, predation, and resource levels, can shape life-history traits. However, these selective pressures are usually considered independently in livebearers and we lack a clear understanding of how they interact in shaping life-history evolution. Furthermore, selective pressures such as interspecific competition are rarely considered as drivers of life-history evolution in poeciliids. Here we test the simultaneous effects of several potential selective pressures on life-history traits in the livebearing fish Poeciliopsis prolifica. We employ a multi-model inference approach. We focus on four known agents of selection: resource availability, stream velocity, population density, and interspecific competition, and their effect on four life-history traits: reproductive allocation, superfetation, number of embryos, and individual embryo size. We found that models with population density and interspecific competition alone were strongly supported in our data and, hence, indicated that these two factors are the most important selective agents for most life-history traits, except for embryo size. When population density and interspecific competition increase there is an increase in each of the three life-history traits (reproductive allocation, superfetation, and number of embryos). For individual embryo size, we found that all single-agent models were equivalent and it was unclear which selective agent best explained variation. We also found that models that included population density and interspecific competition as direct effects were better supported than those that included them as indirect effects through their influence on resource availability. Our study underscores the importance of interspecific competitive interactions on shaping life-history traits and suggests that these interactions should be considered in future life-history studies.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

What Drives Life-History Variation in the Livebearing Fish Poeciliopsis prolifica? An Assessment of Multiple Putative Selective Agents

et al. 2021

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“…In superfetation, the ovary of a female contains various broods in different developmental stages at the same time (Scrimshaw, ; Turner, , ). Superfetation results from fertilization of more than one group of oocytes at different times (Roellig, Menzies, Hildebrandt, & Goeritz, ; Zúñiga‐Vega, Olivera‐Tlahuel, & Molina‐Moctezuma, ). Several species of vertebrates exhibit superfetation, including some species of mammals, for example, Mustelidae and Leporidae families (Caillol, Mondain‐Monval, & Rossano, ; Corner, Stuart, Kelly, & Marples, ; Yamaguchi, Dugdale, & Macdonald, ; Yamaguchi, Sarno, Johnson, O´Brien, & Macdonald, ).…”

Section: Introductionmentioning

confidence: 99%

“…In teleost fishes, the degree of superfetation (the number of broods in simultaneous development), varies according to the species and environmental and ecological factors, for example, lotic and lentic water systems, velocity of water, food availability, population density, and temporality according to the season. The factors that promote and maintain the superfetation are uncertain (Frías‐Alvarez, Macías‐Garcia, Vázquez‐Vega, & Zúñiga‐Vega, ; Frías‐Alvarez & Zúñiga‐Vega, ; Leips & Travis, ; Turner, ; Zúñiga‐Vega et al, ; Zúñiga‐Vega, Reznick, & Johnson, ).…”

Section: Introductionmentioning

confidence: 99%

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Superfetation in the viviparous fish Heterandria formosa (Poeciliidae)

Guzmán-Bárcenas

Uribe

2019

Journal of Morphology

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Heterandria formosa is a viviparous poeciliid native of the southeastern of United States of America. H. formosa exhibits unique reproductive features as: (a) production of extremely small eggs with scarce quantity of yolk (microlecithal eggs), (b) consequently, a high level of matrotrophy and development of a complex follicular placenta, (c) ovarian sperm storage that allows the continuous fertilization of oocytes and production of offspring and (d) development of high degree of superfetation. The degree of superfetation refers to the number of broods in different simultaneous stages of gestation. Morphological evidence of the degree of superfetation in H. formosa has not been documented. Therefore, and because of the general interest in the complex process of superfetation, the goal of this study is to morphologically define the degree of superfetation of H. formosa through two procedures: (a) histological analysis of entire ovaries in gestation and (b) dissection of visible embryos and the histological analysis of the remaining ovarian tissue. Results indicate that H. formosa can gestate up to seven broods at the same time. K E Y W O R D S embryonic development, fertilization, simultaneous broods, sperm storage, Viviparity

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Optimal clutch size for quality control of bisexual and Wolbachia‐infected thelytokous lines of Trichogramma dendrolimi Matsumura (Hymenoptera: Trichogrammatidae) mass reared on eggs of a substitutive host, Antheraea pernyi Guérin‐Méneville (Lepidoptera: Saturniidae)

Zhou

Liu

Wang

et al. 2020

Pest Management Science

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BACKGROUNDTrichogramma dendrolimi has been widely used in augmentative biocontrol of lepidopteran pests in China. In mass production of T. dendrolimi using Antheraea pernyi eggs as substitutive hosts, which are large in size, as clutch size is a parameter of importance to produce high quality parasitoids. Here, we aimed to determine the optimal clutch size for the bisexual Wolbachia‐uninfected line (TdB) and Wolbachia‐infected thelytokous line (TdT) of T. dendrolimi reared on A. pernyi eggs.RESULTSA medium clutch size of 42.75 to 62.27 for TdB and 52.93 to 57.14 for TdT was optimal to maximize fitness‐correlated traits of parasitoid individual. The optimal clutch sizes with maximized parameters included adult emergence rate, adult body size, adult longevity, fecundity, and sum of fecundity of all females per brood were 58.31 (86.00%), 42.75 (231.11 μm), 50.92 (2.69 days), 62.27 (150.89 eggs), and 83.25 (7926.33 eggs) for TdB and 57.14 (94.54%), 52.93 (236.97 μm), 53.64 (2.62 days), 56.80 (161.01 eggs), and 70.10 (8579.71 eggs) for TdT. The TdT had a shorter adult longevity, longer development time, and higher adult emergence rate than did its non‐infected bisexual counterpart.CONCLUSIONA medium brood size in a A. pernyi egg host was optimal to produce offspring parasitoids with higher fitness parameters for both bisexual Wolbachia‐uninfected and thelytokous Wolbachia‐infected lines of T. dendrolimi. The determination of optimal clutch size for T. dendrolimi will provide the reference for the quality control of T. dendrolimi production and improvement of the field performance of the wasps. © 2020 Society of Chemical Industry

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Superfetation increases total fecundity in a viviparous fish regardless of the ecological context

Cited by 12 publications

References 37 publications

What Drives Life-History Variation in the Livebearing Fish Poeciliopsis prolifica? An Assessment of Multiple Putative Selective Agents

What Drives Life-History Variation in the Livebearing Fish Poeciliopsis prolifica? An Assessment of Multiple Putative Selective Agents

Superfetation in the viviparous fish Heterandria formosa (Poeciliidae)

Optimal clutch size for quality control of bisexual and Wolbachia‐infected thelytokous lines of Trichogramma dendrolimi Matsumura (Hymenoptera: Trichogrammatidae) mass reared on eggs of a substitutive host, Antheraea pernyi Guérin‐Méneville (Lepidoptera: Saturniidae)

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