Reproductive Strategies in Marine Invertebrates and the Structuring of Marine Animal Forests

Wangensteen, Owen S.; Turon, Xavier; Palacín, Creu

doi:10.1007/978-3-319-21012-4_52

Cited by 5 publications

(4 citation statements)

References 91 publications

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“…While an asexual model cannot be fully ruled out, the distribution of Obamus is also consistent with sexual reproduction. Selective larval stages are common among modern marine invertebrates that reproduce sexually, with planktonic larvae that are either transported or actively swim for days to months, navigating at small scales in order to secure a preferred substrate (Carlon and Olson 1993; Manríquez and Castilla 2007; Maldonado and Riesgo 2008; Denley et al 2014; Chase et al 2016; Wangensteen et al 2016). These data do not suggest a swimming larval phase for Obamus ; however, Obamus was not limited in its environmental dispersal range, occurring in two separate facies at NENP, reflecting environments between fair weather and storm wave base to a sub–wave base upper canyon fill (Droser et al 2019).…”

Section: Discussionmentioning

confidence: 99%

“…Here we examine the spatial distribution of Tribrachidium , Rugoconites , and Obamus on five excavated beds at NENP through the application of spatial point pattern analysis (SPPA) to determine their spatial distributions and to test hypotheses regarding their life histories, including settlement and dispersal, and potential interactions with their environments. In modern marine invertebrate populations, dispersal mechanisms affect the small- and large-scale spatial distributions of organisms (Wangensteen et al 2016). Availability of substrate also plays a role during dispersal and settlement, along with preexisting conspecific distributions (e.g., Rodríguez et al 1993; Sampayo et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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Spatial distributions of Tribrachidium, Rugoconites, and Obamus from the Ediacara Member (Rawnsley Quartzite), South Australia

Boan¹,

Evans²,

Hall³

et al. 2023

Paleobiology

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The spatial distribution of in situ sessile organisms, including those from the fossil record, provides information about life histories, such as possible dispersal and/or settlement mechanisms, and how taxa interact with one another and their local environments. At Nilpena Ediacara National Park (NENP), South Australia, the exquisite preservation and excavation of 33 fossiliferous bedding planes from the Ediacara Member of the Rawnsley Quartzite reveals in situ communities of the Ediacara Biota. Here, the spatial distributions of three relatively common taxa, Tribrachidium, Rugoconites, and Obamus, occurring on excavated surfaces were analyzed using spatial point pattern analysis. Tribrachidium have a variable spatial distribution, implying that settlement or post-settlement conditions/preferences had an effect on populations. Rugoconites display aggregation, possibly related to their reproductive methods in combination with settlement location availability at the time of dispersal and/or settlement. Additionally, post-settlement environmental controls could have affected Rugoconites on other surfaces, resulting in lower populations and densities. Both Tribrachidium and Rugoconites also commonly occur as individuals or in low numbers on a number of beds, thus constraining possible reproductive strategies and environmental/substrate preferences. The distribution of Obamus is consistent with selective settlement, aggregating near conspecifics and on substrates of mature microbial mat. This dispersal process is the first example of substrate-selective dispersal among the Ediacara Biota, thus making Obamus similar to numerous modern sessile invertebrates with similar dispersal and settlement strategies.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spatial distributions of Tribrachidium, Rugoconites, and Obamus from the Ediacara Member (Rawnsley Quartzite), South Australia

Boan¹,

Evans²,

Hall³

et al. 2023

Paleobiology

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“…Esto da inicio a una especie de "guerra lenta" entre ambas colonias, que se manifiesta como un espacio vacío entre ellas donde ninguna puede crecer debido a la presencia de la otra (Ayre y Grosberg, 2005). D. Estrategias Reproductivas: Estas estrategias son utilizadas tanto por animales como por plantas para generar descendencia (Wangensteen et al, 2017). Un ejemplo de esto es el cerdo de mar (género Aplidium) (Fig.…”

Section: Cambianteunclassified

La vida en la zona intermareal

Araujo-Leyva,

Lorda Solórzano,

Moriel Sáenz

et al. 2024

biologiaysociedad

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El ecosistema intermareal es una zona costera que se encuentra entre las mareas alta y baja. Esta zona es extremadamente importante, debido a que es el hogar de una gran cantidad de organismos marinos que dependen de las condiciones específicas de esta área para sobrevivir. Las características de las zonas intermareales son tan distintas que es difícil comparar un acantilado rocoso con una marisma lodosa o incluso una pradera de pastos estuarinos. ¿Pero qué tienen en común estos ecosistemas a lo largo del mundo? La zona intermareal es la franja de tierra que se encuentra entre la línea de marea alta y la marea baja en la costa, y es un hábitat importante para muchas especies de plantas y animales, estos organismos que viven allí deben ser capaces de adaptarse a cambios extremos en las condiciones ambientales y dado la interacción del ser humano con estas áreas, hoy en día es uno de los hábitats más perturbados y amenazados del planeta. La importancia de la zona intermareal radica en su papel como zona de transición entre los ecosistemas terrestres y marinos, y en su contribución a la biodiversidad global. En la zona intermareal se pueden encontrar una gran variedad de especies, como algas, crustáceos, moluscos, gusanos, aves costeras y migratorias, entre otras. Estas especies son importantes para la cadena alimentaria y contribuyen a la pesca y la acuicultura local de cada región. Además, la zona intermareal desempeña un papel crucial en la protección de la costa, ya que ayuda a prevenir la erosión costera y reduce la energía de las olas. Las plantas y animales que viven en la zona intermareal también son importantes para la purificación del agua y la absorción de nutrientes. El ecosistema intermareal es un área increíblemente importante que tiene un impacto significativo en el medio ambiente y en la vida de las personas. Es fundamental que se proteja y conserve para garantizar su supervivencia y su papel crítico en el ecosistema global.

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“…Sexual reproduction implies some level of interaction between individuals: even broadcast spawners, when releasing their gametes in the environment, rely on a certain degree of coordination between partners [11]. More complex interactions are found with increasingly complex social context, where some individuals mate with multiple partners, typically at the expenses of same sex rivals, increasing their reproductive success.…”

Section: Social Control Of Reproductionmentioning

confidence: 99%

Social regulation of reproduction: control or signal?

Benvenuto¹,

Lorenzi²

2023

Preprint

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Traditionally, dominant breeders have been considered able to control other individuals’ reproduction in multi-member groups with high variance in reproductive success/reproductive skew (e.g., forced sterility on subordinate conspecifics in eusocial animals; suppression of sex change in sequential hermaphrodites). These actions are typically presented as active impositions by reproductively dominant individuals. However, how can individuals regulate the physiological reproductive state of others? Alternatively, less reproductively successful individuals could self-restrain from reproduction in presence of dominant breeders. Shifting perspective from a top-down manipulation to a broader view (which includes all contestants) and using a multi-taxa approach, we propose a resolution of reproductive-skew conflicts based on signalling rather than control, along a continuum of levels of strategic regulation of reproduction.

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Reproductive Strategies in Marine Invertebrates and the Structuring of Marine Animal Forests

Cited by 5 publications

References 91 publications

Spatial distributions of Tribrachidium, Rugoconites, and Obamus from the Ediacara Member (Rawnsley Quartzite), South Australia

Spatial distributions of Tribrachidium, Rugoconites, and Obamus from the Ediacara Member (Rawnsley Quartzite), South Australia

La vida en la zona intermareal

Social regulation of reproduction: control or signal?

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