Pollination biology of the crypto-viviparous Avicennia species (Avicenniaceae)

Raju, A. J. S.; Rao, P. V. Subba; Kumar, Rajendra; Mohan, Sushree

doi:10.11609/jott.o2919.3377-89

Cited by 24 publications

(18 citation statements)

References 15 publications

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“…Mangrove community contains species that are both generalists and specialists (Azuma et al, 2002). Our result showed similarity with many previous studies on aspects of pollinator diversity and role in mangrove species pollination (Clarke and Meyerscough, 1991;Pandit and Choudhury, 2001;Azmi et al, 2012;Raju et al, 2012;, Hermansen et al, 2014Tomlinson, 2016). The report towards visitation of ants, wasp, bugs, flies, bees, cantharid beetles and moths to flowers of A. marina by Clarke and Meyerscough (1991) showed similarity to this study.…”

Section: Discussionsupporting

confidence: 90%

“…We reviewed literature of eighteen mangrove species that showed all species were more or less associated with biotic pollinators like insects more commonly from family Hymenoptera, Diaptera, Coleoptera and Lepidoptera (Marshall, 1983;Clarke and Meyerscough, 1991;Raju et al, 1994;Sun et al, 1998;Naskar and Mandal, 1999;Pandit and Choudhury, 2001;Raju et al, 2006;Ghosh et al, 2008;Nagarajan et al, 2010;Ghosh and Chakraborti, 2012;Raju et al, 2012;Pandey and Pandey, 2013;Hermansen et al, 2014;Tomlinson, 2016) (Table 5). The latter two groups spend enough time for nectar foraging.…”

Section: Discussionmentioning

confidence: 99%

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Insect Flower Visitors and their Role in Mangrove Pollination: A Study from East Coast of India

Panda

Lele²,

Samal

et al. 2019

JTFE

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Insects play a critical role in bringing successful pollination in angiosperms. Mangrove pollination is a poorly studied aspect from scientific community. This particular work investigated the insect visitors and other prospective of mangrove flowers. Twenty two species (i.e., 17 true and 5 mangrove associates) from Bhitarkanika Wildlife Sanctuary and Devi estuary of Odisha state (East coast of India) were selected; plants were pre-marked and visiting insects were recorded starting from 07.00 am to 13.00 pm during the flowering period of each species. Fifty three species of insects which belongs to seven orders, twenty five families and forty four genera were recorded. The highest, i.e., 14 sp. of insects had been recorded from Aegiceras corniculatum which is a small tree and riverine mangrove. Among insects, bees were found as the most common flower visitors (in 82% mangroves) and particularly “honey bee”, i.e., Apis dorsata visited to sixteen mangrove species (i.e., 73% mangroves). Bees, particularly Honeybee (A. dorsata), sweet bee (Lasioglossum sp.) and carpenter bee (Xylocopa pubescens) were actively engaged in pollen dispersal. Resident time and visitation rate supported that bees with highest visitation rate and low resident time were powerful candidates in bringing mangrove pollination. Wasps, beetles and butterflies act more to be foraging species. Facilitation of bee management and particularly supporting apiculture will help to increase pollination successes of rare and threatened mangroves at regional and global level.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Insect Flower Visitors and their Role in Mangrove Pollination: A Study from East Coast of India

Panda

Lele²,

Samal

et al. 2019

JTFE

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“…The results on pollen influx indicate that Phoenix is a strong pollen producer, while Excoecaria, Avicennia and Aegiceras are relatively low pollen producers. The low representation of Excoecaria, Avicennia and Aegiceras could be due to the fact that these genera are insect-pollinated (Tomlinson 1986, Raju et al 2012).…”

Section: Extant Vegetation and Modern Pollen Rainmentioning

confidence: 99%

Responses of the mangrove ecosystem to Holocene environmental change in the Sundarban Biosphere Reserve, India

Hait¹,

Behling

2019

Acta Palaeobotanica

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The Sundarban Mangrove Forest in the Sundarban Biosphere Reserve, located at the mouth of the Ganga–Brahmaputra Delta in India, is the most diverse mangrove ecosystem in the world. Sediment cores were taken from two widely separated islands in that reserve: Chamta (CMT) and Sudhyanyakhali (SDK). Pollen analysis and radiocarbon dating were used to study the Holocene development and dynamics of this unique ecosystem. Modern pollen rain study reveals a strong relation between modern pollen rain and the present vegetation, as well as a high rate of Phoenix palludosa pollen production.The pollen records indicate that man-grove existed at CMT from ~5960 and at SDK from ~1520 cal yr BP. Changes in relative sea level, including the frequency and intensity of inundation as well as fluctuating precipitation, have been the major factors along with geomorphic processes that control the development and dynamics of the mangrove in the area during the Holocene. The mid Holocene mangrove at CMT declined, to be progressively replaced by successive communities, and eventually reached climax stage, while the SDK site is transitional in nature. The mangrove responds rapidly to changes in environmental conditions at both locations. Because of large-scale anthropogenic interventions, it is unlikely that similar rapid responses will occur in the future.

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“…Some mangroves species such as Avicennia (Clarke & Myerscough, 1991;Solomon Raju, Rao, Kumar, & Mohan, 2012;Nadia, Menezes & Machado, 2013), Bruguiera (Davey, 1975;Noske, 1993;Nagrajan et al, 2008;Kamruzzaman et al, 2013) …”

Section: Floral Biology An Pollination In Mangrovesmentioning

confidence: 99%

Reproductive Strategy of Aegiceras corniculatum L. (Blanco.) - A Mangrove Species, in MNP&S, Gujarat, India

Pandey¹,

Pandey²

2013

JPS

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Mangroves occur in the tropical and subtropical inter-tidal regions of the world. Owing to their locations, they are expected to have a reproductive strategy which can facilitate generalized pollination. The present work has examined the floral biology, breeding system, pollinator resource and their efficiency, and the reproductive strategy of Aegiceras corniculatum L. (Blanco) at three islands (three populations) in Marine National Park and Sanstuary (MNP&S), Gulf of Kachchh, Gujarat, India. The temporal relations in the floral processes such as anther dehiscence, stigma receptivity and nectar secretion were studied and the results were juxtaposed to have comprehensive view. The floral life is very long (21 days) and the pace of floral transformation varies with the floral process. Significant diurnal variations in the stigma receptivity and nectar secretions influence the pollinators' availability during different periods of the day. All the three breeding systems are present indicating occurrence of autogamy. However, strong protandry reduces its possibility to a significant level. Further, the asynchrony in the flowering processes at inflorescence level and the foraging behavior of pollinators increase the possibility of geitonogamy. The reproductive strategy of the plant is inclined towards cross pollination with keeping some possibility of self-pollination.Keywords: mangrove, Aegiceras corniculatum, floral biology, pollination biology, stigma receptivity, nectar, pollinator, India Introduction Floral Biology-A Brief HistoryThough floral biology has attracted biologists since eighteenth century, the most fundamental and comprehensive observations were made by Sprengel (1793) who had successfully explained floral biology of 461 angiosperms (with 1 117 illustrations) in terms of floral transformations, functions, fitness, guides, rewards and its association with pollinator resource, determining the type and efficiency of breeding systems. Contrarily, Kölreuter (1761-1766), was of the view that the beauty of flowers had nothing to do with pollination. Willdenow (1802) had supported Sprengel's view while many contemporary workers such as Goethe (1790), Meyer (1953) and Henschel (1820) rejected it and, therefore, it remained in oblivion for decades. Darwin (1888) has rebound Sprengle's philosophy. Thereafter, evolution of plant breeding systems, their efficiency and the regulatory factors have gain enormous attention of biologists (Vogel, 1996;Richards, 1997). However, much of such works were confined to territorial species and very few addressed intertidal species such as mangroves. Biology of MangrovesMangroves represent the intertidal tropical and sub-tropical communities and the plant component thereof (Tomlinson, 1986). The long distant dispersal of their propagules, largely through water, play important role in their geographical distribution and high inter-population genetic diversity (Geng et al., 2008). Owing to their unique habitat and physiological characters, majority of works pertained to th...

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Pollination biology of the crypto-viviparous Avicennia species (Avicenniaceae)

Cited by 24 publications

References 15 publications

Insect Flower Visitors and their Role in Mangrove Pollination: A Study from East Coast of India

Insect Flower Visitors and their Role in Mangrove Pollination: A Study from East Coast of India

Responses of the mangrove ecosystem to Holocene environmental change in the Sundarban Biosphere Reserve, India

Reproductive Strategy of Aegiceras corniculatum L. (Blanco.) - A Mangrove Species, in MNP&S, Gujarat, India

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