Effect of habitat structure on reproduction and prey capture of a rare carnivorous plant, Pinguicula lutea

Primer, Samantha B.; Molano‐Flores, Brenda; Zaya, David N.; Helm, C. G.; Coons, Janice

doi:10.1007/s11829-018-9632-y

Cited by 5 publications

(4 citation statements)

References 64 publications

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“…As previously noted, all species have a flat rosette of green leaves, but in the case of P. planifolia , leaves may have a distinct reddish coloration due to anthocyanin production (Annis ). Pinguicula leaves produce secretions that capture and digest springtails and small flies (Primer ). Lastly, based on phylogenetic work using chloroplast DNA, P. ionantha and P. lutea were found to be closely related, with P. lutea being sister to a clade consisting of P. ionantha and P. primuliflora , another southeastern USA Pinguicula (Cieslak et al .…”

Section: Methodsmentioning

confidence: 99%

Reproductive ecology of three rareNorthAmericanPinguiculaspecies

Molano‐Flores

Primer

Annis

et al. 2018

Plant Species Biology

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Pinguicula (Lentibulariaceae) is a genus of more than 100 carnivorous plant species. A handful of comprehensive studies have examined the reproductive ecology of these species, mostly in Europe and none in the USA. During 2013–2016 different aspects of the reproductive ecology of P. ionantha, P. lutea and P. planifolia were studied at multiple locations in the Florida Panhandle, USA. All three species are of conservation concern within the study region and some aspects of their reproductive ecology may be contributing to their rarity. For all species, we conducted breeding system studies investigating xenogamy vs. autogamy, self‐incompatibility vs. self‐compatibility, pollen:ovule ratios, flower phenology and longevity, and pollinator visitation, as well as fruit and seed set differences among populations. All three Pinguicula species were determined to be xenogamous and self‐compatible, although the pollen:ovule ratios were extremely low. In addition, these species have floral nastic movements and flower longevity that ranges from 2 to 3 weeks depending on the species. Hymenoptera was identified as the primary group of pollinators visiting all species, although observed visitation events were low. All three Pinguicula species had extremely high levels of fruit set and seed set. Worldwide, Pinguicula species share similar breeding system and reproductive patterns. The rare status of P. ionantha, P. lutea and P. planifolia is more likely due to their ecological requirements, demographics and/or patterns of genetic diversity, than reproduction. This work is among the first and most comprehensive associated with the reproductive ecology of North American Pinguicula.

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Section: Methodsmentioning

confidence: 99%

Reproductive ecology of three rareNorthAmericanPinguiculaspecies

Molano‐Flores

Primer

Annis

et al. 2018

Plant Species Biology

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“…Some studies have provided evidence that carnivorous plants experience marked spatial environmental heterogeneity. Sites can differ in orders of magnitude in terms of light availability, (Alcalá & Domínguez, 2003;Zamora, Gómez, & Hódar, 1998) and can vary in soil humidity and fertility and prey availability (Alcalá & Domínguez, 2003;Primer, Molano-Flores, Zaya, Helm, & Coons, 2018). Because pollinators prefer to visit flowers in sunny sites, it has been predicted that the spatial heterogeneity of the light environment could be a particularly strong factor favoring local adaptation (Zamora, 2002).…”

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confidence: 99%

Effects of crossing distance on fitness components in the carnivorous plant Pinguicula moranensis (Lentibulariaceae)

Villegas

Ospina‐Garcés

Fornoni³

et al. 2020

Plant Species Biology

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Plant species vary in the pollination distance at which negative fitness effects are expressed, and it has been proposed that optimal mating should occur at a distance large enough to diminish the risks of inbreeding, but short enough to prevent outbreeding depression. In a natural population of Pinguicula moranensis we assessed the fitness of plants (seeds per fruit) and their progeny (germination and seedling survival) as a function of pollination distance by handpollinating with donors from five distances: 0 m (self-fertilization), 1, 4 and 460 m (within-population) and 9,900 m (between-population) under in situ and ex situ conditions. We found that average values for fitness components were consistently lower in the in situ experiment than in the ex situ experiment. Under both conditions, the self-fertilization treatment had the lowest values. Inbreeding depression values were high (0.94 to 0.98), corresponding with the values expected for an outcrossing species subjected to self-fertilization. Overall, no evidence of outbreeding depression was detected. Considering that our experiment was restricted to one single donor population and one recipient population, our results indicate that despite the within-population patchy distribution of individuals, biparental inbreeding could occur at low rates, due in part to short seed dispersal distance. However, pollen movement of at least 1 m is apparently sufficient to reverse negative effects. K E Y W O R D Sex situ experiment, in situ experiment, inbreeding depression, optimal crossing distance, outbreeding depression | INTRODUCTIONIn insect-pollinated plants, pollen movement tends to be spatially limited (Levin & Kerster, 1974;Pluess et al., 2009;Sork & Smouse, 2006). Pollen deposition occurs frequently between neighbor plants, between flowers within the same individual, or even within the same flower (Jersáková & Johnson, 2006;Kropf & Renner, 2008). The resulting low pollen movement can affect the distribution of genetic variation within populations, increasing the proportion of identical-by-descent genotypes (Charlesworth & Charlesworth, 1999;Keller & Waller, 2002). Inbreeding, in turn, may have significant consequences on parental fecundity and progeny fitness (Keller & Waller, 2002;Lande & Schemske, 1985). A short-term negative effect is expected when outcrossing plant species are subjected to self-fertilization (Colling,

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“…En el caso de presas visualmente indistinguibles o frágiles, se colectaron con la hoja completa, los artrópodos y/o las hojas con artrópodos se almacenaron en tubos Eppendorf de 3 ml con alcohol al 70 %, la identificación taxonómica de las presas se realizó con observaciones de los rasgos morfológicos en un microscopio estereoscópico y utilizando las claves dicotómicas de Triplehorn & Johnson (2005). Se cuantificó el número de individuos de cada orden taxonómico que fueron capturados como presas en cada hoja asumiendo un tiempo de captura de un día antes de ser digeridos y con estructuras identificables (Heslop-Harrison & Knox 1971, Primer et al 2018, con el mismo nivel se realizó la estimación de la diversidad taxonómica promedio (average taxonomic distinctness, Δ+) Así, a mayor valor del índice, las presas capturadas pertenecerán a diferentes órdenes y clases taxonómicas de artrópodos (García-de Jesús et al 2016). Este índice se calculó en el programa Past 4.05 (Hammer et al 2001).…”

Section: Materiales Y Métodosunclassified

Efecto del ambiente y de caracteres morfológicos en variables bióticas y reproductivas de Pinguicula moranensis var. neovolcanica Zamudio (Lentibulariaceae) en Tlaxcala, México

et al. 2022

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Antecedentes: La distribución geográfica de Pinguicula moranensis var. neovolcanica está restringida a la Faja Neovolcánica Transmexicana. En Tlaxcala, esta especie ha desaparecido en la mayoría de los sitios donde se había registrado. Es necesario entender la relación entre las características ambientales, morfológicas y reproductivas de las poblaciones que aún prevalecen. Preguntas y / o Hipótesis: ¿Cuál es el efecto del ambiente y de los caracteres morfológicos sobre las variables bióticas y caracteres reproductivos de P. moranensis en Tlaxcala? Especies de estudio: Pinguicula moranensis var. neovolcanica Zamudio. Sitio y fecha de estudio: Panotla y San José Teacalco, Tlaxcala, México. Febrero y julio de 2019. Métodos: En dos sitios se registraron las variables abióticas (luz y humedad) así como las variables bióticas (densidad, presas y visitadores florales). Se midieron los caracteres morfológicos de las plantas (diámetro de roseta, longitud y número de pedúnculos y flores) y reproductivos (número total de semillas, semillas fértiles, semillas abortadas y viabilidad). Resultados: Se encontraron efectos positivos de la humedad, número de pedúnculos y número de semillas fértiles sobre la abundancia de presas. La diversidad taxonómica de presas se relacionó con el número de semillas fértiles. La luz, la densidad de individuos y la viabilidad de semillas tuvieron efecto positivo en el número de semillas fértiles. Conclusiones: Los resultados indican que las variables abióticas, bióticas, morfológicas y reproductivas interactúan para determinar la presencia de las poblaciones de P. moranensis en Tlaxcala. Además, este estudio enfatiza la importancia de conservar los hábitats en la Faja Volcánica Transmexicana. Translate stop Translate stop Translate stop Translate stop

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Effect of habitat structure on reproduction and prey capture of a rare carnivorous plant, Pinguicula lutea

Cited by 5 publications

References 64 publications

Reproductive ecology of three rareNorthAmericanPinguiculaspecies

Reproductive ecology of three rareNorthAmericanPinguiculaspecies

Effects of crossing distance on fitness components in the carnivorous plant Pinguicula moranensis (Lentibulariaceae)

Efecto del ambiente y de caracteres morfológicos en variables bióticas y reproductivas de Pinguicula moranensis var. neovolcanica Zamudio (Lentibulariaceae) en Tlaxcala, México

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