Flowering and fruiting phenology of <i>Normanbya normanbyi</i> (W. Hill) L. H. Bailey (Arecaceae), a palm endemic to the lowland tropical rainforest of north‐eastern Australia

Inkrot, Daniela; Sattler, Dietmar; Geyer, Christian; Morawetz, Wilfried

doi:10.1111/j.1442-9993.2007.01737.x

Cited by 11 publications

(13 citation statements)

References 38 publications

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“…The same characteristic was observed in Euterpe precatoria (Kuchmeister et al, 1997), Elaeis guineenses (Adam et al, 2007), Normanbya normanbyi (W.Hill) L.H. Bailey (Inkrot et al, 2007) and Licuala peltata Roxb. ex Buch.-Ham.…”

Section: P 649-661supporting

confidence: 72%

Morphoanatomy of the flower of Syagrus inajai (SPRUCE) Becc. (Arecaceae- Arecoideae- Attaleinae), Amazon

2013

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The occurrence of Syagrus inajai (Spruce) Becc., popularly known as pupunha palm, among other names, has been registered in the Guianas and in the North of Brazil in areas of terra firme (non-flooding) and gallery forests. In order to characterize the inflorescence and further knowledge of this family, a morphoanatomical study was carried out of the palm S. inajai in a green area of the Campus of the Federal University of Amazonas -UFAM, Manaus, Amazonas. The inflorescences are branched to one order, pedunculate, and interfoliar, measuring 62-82 cm in length, with woody bracts with longitudinal grooves on the external surface, and flowers in triads. The number of flowers to each inflorescence varies from 5,904 to 17,316 for staminate flowers, and from 180 to 3,528 for pistillate flowers. Staminate flowers with six anthers and one vascular bundle each; three-lobed pistillodium, vascularized pistillodium. Its pistillate flowers have six staminodia joined to form a circle, syncarpic, tricarpellary, trilocular gynoecium, one ovule to each locule, synascidiate in the ovary, and plicated above. Tripartite stigma, apical and sessile, with epidermis composed of elongated papillary cells, pattern of epidermis that is maintained throughout the stylar canal. Bitegmented, anatrope, pachychalazal ovule.Keywords: Syagrus, anatomy, flowers of Palmae, Cocoseae tribe, pupunharana. Morfoanatomia floral de Syagrus inajai (Spruce) Becc.(Arecaceae-Arecoideae-Attaleinae), Amazônia ResumoSyagrus inajai (Spruce) Becc., popularmente conhecida como pupunha-brava entre outras denominações, teve sua ocorrência registrada para Guianas e no norte do Brasil em áreas de floresta de terra firme e floresta de galeria. Com o intuito de caracterizar a inflorescência ampliando o conhecimento a respeito da família foi realizado o estudo morfoanatômico da palmeira S. inajai, em área verde do Campus da Universidade Federal do Amazonas -UFAM, Manaus, Amazonas. A inflorescência é ramificada em primeira ordem, pedunculada, interfoliar com 62-82 cm de comprimento, bráctea lenhosa com fissuras longitudinais na superfície externa e flores em tríades. O número de flores por inflorescência varia entre 5.904 -17.316 para flores estaminadas e 180 -3.528 para as flores pistiladas. Flores estaminadas com seis anteras e um feixe vascular cada; pistilódio trífido e vascularizado. Flores pistiladas com seis estaminódios unidos formando um círculo. Gineceu sincárpico, tricarpelar, trilocular, um óvulo por lóculo, sinascidiado no ovário e plicado acima. Estigma tripartido, apical e séssil, com epiderme composta por células papilosas alongadas, padrão de epiderme que se mantem por todo canal estilar. Óvulo é anátropo, paquicalazal e bitegumentado.Palavras-chave: Syagrus, anatomy, flores de Palmae, tribo Cocoseae, pupunharana.

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Section: P 649-661supporting

confidence: 72%

Morphoanatomy of the flower of Syagrus inajai (SPRUCE) Becc. (Arecaceae- Arecoideae- Attaleinae), Amazon

2013

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“…There is some circumstantial evidence that the peak period of flowering in the northern lowlands of the Wet Tropics (an area that includes our study site; Boulter et al 2006) corresponds with the peak beetle activity period in our study. The peak period of flowering and fruiting of Normanbya normanbyi , a common palm at our study site, is also at this time of year (Inkrot et al 2007). Thus the beetle activity peaks in our study may be caused by the seasonality of biological resources although the nature of our data precludes us from drawing any such conclusions.…”

Section: Discussionmentioning

confidence: 75%

Seasonality of a Diverse Beetle Assemblage Inhabiting Lowland Tropical Rain Forest in Australia

Grimbacher

Stork²

2009

Biotropica

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One of the least understood aspects of insect diversity in tropical rain forests is the temporal structuring, or seasonality, of communities. We collected 29,986 beetles of 1473 species over a 4‐yr period (45 monthly samples), with the aim to document the temporal dynamics of a trophically diverse beetle assemblage from lowland tropical rain forest at Cape Tribulation, Australia. Malaise and flight interception traps were used to sample adult beetles at five locations at both ground and canopy levels. Beetles were caught throughout the year, but individual species were patchy in their temporal distribution, with the 124 more abundant species on average being present only 56 percent of the time. Climatic variables (precipitation, temperature, and solar radiation) were poorly correlated with adult beetle abundance, possibly because: (1) seasonality of total beetle abundance was slight; (2) the peak activity period (September–November) did not correspond to any climatic maxima or minima; or (3) responses were nonlinear owing to the existence of thresholds or developmental time‐lags. Our results do not concur with the majority of tropical insect seasonality studies suggesting a wet season peak of insect activity, perhaps because there is no uniform pattern of insect seasonally for the humid tropics. Herbivores showed low seasonality and individual species’ peaks were less temporally aggregated compared to nonherbivores. Canopy‐caught and larger beetles (> 5 mm) showed greater seasonality and peaked later in the year compared to smaller or ground‐caught beetles. Thus seasonality of adult beetles varied according to the traits of feeding ecology, body size, and habitat strata.

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“…; Inkrot et al . ). Of the 82 tree species within the radius of the canopy crane, 58 (70%) produce fleshy fruits, and these are readily identifiable (Cooper & Cooper ; Laidlaw et al .…”

Section: Methodsmentioning

confidence: 97%

“…; Inkrot et al . ). Although some fleshy fruits are available year round, production tends to peak in the later part of the dry season or early in the wet season (Crome ; Spencer et al .…”

Section: Methodsmentioning

confidence: 99%

Low host specificity of beetles associated with fruit falls in lowland tropical rainforest of north‐east Australia

et al. 2013

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Most host-specificity studies of tropical rainforest insects have focused on those species feeding on leaves. Apart from the fruit flies, the level of specialisation among fruit-associated insects is poorly known. The relative contribution to local species richness made by insects feeding or associated with fallen fruits is also unknown. Beetles from fruit falls over a 5-year period in lowland tropical rainforest at Cape Tribulation, Australia were sampled. A total of 5157 individual beetles of 73 species were sampled from the fruits of 18 different plant species. Only a few species were of frugivorous families, and most species are likely utilising resources associated with the breakdown of the fruits. The size of the fruit fall-associated beetle assemblage (73 spp) was small compared with the number of species collected during a 4-year sampling program conducted at the same site prior to the current study using 10 combined Malaise-Flight Interception Traps (1473 spp, 77 families). The number of beetles and species collected from fruit that were very strongly correlated with the number of times fruit falls from a particular species of plant were sampled. The locally common palm, Normanbya normanbyi, produced fruit throughout the year and supported the largest number of fruit-associated species. It is suggested that this might be a keystone resource for local fruit fall-associated insect species. Although most beetle species showed a preference for the fruits of a particular plant species, overall host specificity for beetles was low. This is probably because fruit resources at this site are spatially and temporally patchy. Our results challenge the notion that most insects associated with fruit falls in tropical rainforests are highly host-specific.

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Flowering and fruiting phenology of Normanbya normanbyi (W. Hill) L. H. Bailey (Arecaceae), a palm endemic to the lowland tropical rainforest of north‐eastern Australia

Cited by 11 publications

References 38 publications

Morphoanatomy of the flower of Syagrus inajai (SPRUCE) Becc. (Arecaceae- Arecoideae- Attaleinae), Amazon

Morphoanatomy of the flower of Syagrus inajai (SPRUCE) Becc. (Arecaceae- Arecoideae- Attaleinae), Amazon

Seasonality of a Diverse Beetle Assemblage Inhabiting Lowland Tropical Rain Forest in Australia

Low host specificity of beetles associated with fruit falls in lowland tropical rainforest of north‐east Australia

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