Carnivorous Plant Newsletter of Australia
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Foraging Modes of Carnivorous Plants Aaron M
Israel Journal of Ecology & Evolution, 2020 http://dx.doi.org/10.1163/22244662-20191066 Foraging modes of carnivorous plants Aaron M. Ellison* Harvard Forest, Harvard University, 324 North Main Street, Petersham, Massachusetts, 01366, USA Abstract Carnivorous plants are pure sit-and-wait predators: they remain rooted to a single location and depend on the abundance and movement of their prey to obtain nutrients required for growth and reproduction. Yet carnivorous plants exhibit phenotypically plastic responses to prey availability that parallel those of non-carnivorous plants to changes in light levels or soil-nutrient concentrations. The latter have been considered to be foraging behaviors, but the former have not. Here, I review aspects of foraging theory that can be profitably applied to carnivorous plants considered as sit-and-wait predators. A discussion of different strategies by which carnivorous plants attract, capture, kill, and digest prey, and subsequently acquire nutrients from them suggests that optimal foraging theory can be applied to carnivorous plants as easily as it has been applied to animals. Carnivorous plants can vary their production, placement, and types of traps; switch between capturing nutrients from leaf-derived traps and roots; temporarily activate traps in response to external cues; or cease trap production altogether. Future research on foraging strategies by carnivorous plants will yield new insights into the physiology and ecology of what Darwin called “the most wonderful plants in the world”. At the same time, inclusion of carnivorous plants into models of animal foraging behavior could lead to the development of a more general and taxonomically inclusive foraging theory. -
Carnivorous Plant Newsletter V47 N2 June 2018
New Cultivars Keywords: Pinguicula ‘Riva’, Drosera binata ‘Ghost’, Nepenthes ampullaria ‘Black Widow’, Nepenthes ampullaria ‘Caramel Candy Stripe’, Nepenthes ampullaria ‘Lime Delight’, Nepenthes ampullaria ‘Chocolate Delight’, Nepenthes ampullaria ‘Cherry Delight’, Nepenthes ampullaria ‘Bronze Delight’. Pinguicula ‘Riva’ Submitted: 22 February 2018 The parents of Pinguicula ‘Riva’ (Fig. 1) are P. agnata (with scented flowers) × P. gigantea (to the best of my knowledge; the second parent may have been a P. gigantea × P. emarginata). This cross was done and the resulting seed germinated in late 2013 by me in San Francisco, California. This particular plant made its specialness apparent after about 2 years of growth under lights when it began flowering. The flower is approximately 2 cm wide by 2.5 cm long and is white with a bright yellow center which is surrounded by a flaring purple ring. The petals are 1 cm long, 7-9 mm wide, slightly ruffled, and the top 2 petals have irregular slightly serrated upper margins. The spur is 12 mm long, green and straight. The flower stalk is 18-20 cm long. And, the flower is scented, quite heavily in warmer conditions. The flower does not produce pollen or seed so it is sterile. The leaves of the plant are nice as well, ranging from 4-5.5 cm long and about 3 cm wide. The leaf shape is oblong egg-shaped with the rounded end distal from the central growth point. The color of the leaves ranges from pale green with burgundy tinting and margins to muted burgundy with green undertones. The margins of the leaf are slightly upturned. -
Testing Darwin's Hypothesis About The
vol. 193, no. 2 the american naturalist february 2019 Natural History Note Testing Darwin’s Hypothesis about the Wonderful Venus Flytrap: Marginal Spikes Form a “Horrid q1 Prison” for Moderate-Sized Insect Prey Alexander L. Davis,1 Matthew H. Babb,1 Matthew C. Lowe,1 Adam T. Yeh,1 Brandon T. Lee,1 and Christopher H. Martin1,2,* 1. Department of Biology, University of North Carolina, Chapel Hill, North Carolina 27599; 2. Department of Integrative Biology and Museum of Vertebrate Zoology, University of California, Berkeley, California 94720 Submitted May 8, 2018; Accepted September 24, 2018; Electronically published Month XX, 2018 Dryad data: https://dx.doi.org/10.5061/dryad.h8401kn. abstract: Botanical carnivory is a novel feeding strategy associated providing new ecological opportunities (Wainwright et al. with numerous physiological and morphological adaptations. How- 2012; Maia et al. 2013; Martin and Wainwright 2013; Stroud ever, the benefits of these novel carnivorous traits are rarely tested. and Losos 2016). Despite the importance of these traits, our We used field observations, lab experiments, and a seminatural ex- understanding of the adaptive value of novel structures is of- periment to test prey capture function of the marginal spikes on snap ten assumed and rarely directly tested. Frequently, this is be- traps of the Venus flytrap (Dionaea muscipula). Our field and labora- cause it is difficult or impossible to manipulate the trait with- fi tory results suggested inef cient capture success: fewer than one in four out impairing organismal function in an unintended way; prey encounters led to prey capture. Removing the marginal spikes de- creased the rate of prey capture success for moderate-sized cricket prey however, many carnivorous plant traits do not present this by 90%, but this effect disappeared for larger prey. -
Effects of Poaching, Habitat Destruction, and Climate Change on Nepenthes
Effects of Poaching, Habitat Destruction, and Climate Change On Nepenthes Lucas Barron 4/27/19 Effects of Poaching, Habitat Destruction, and Climate Change On Nepenthes Lucas Barron; 4/27/2018 1 Effects of Poaching, Habitat Destruction, and Climate Change On Nepenthes When Dominick Gravine, and avid Nepenthes collector and seller, visited Borneo in March of 2013 to trek up the slopes of mount Trusmadi, he not only saw the endangered Nepenthes species that inhabit the misty slopes, but also the effects of the rapid urbanization of the local villages. He saw ‘palm oil plantations as far as the eye Dominick Gravine and his collection of Nepenthes can see.’ (-Gravine). “Palm oil plantations completely clear the land of its natural biodiversity.’ (-Gravine). “While in the local villages, I was offered many plants which were obviously taken from the wild. The locals see these plants as a source of money. The over collect and sell them to collectors.” (-Gravine) While climbing the mountains, he saw many seed stalks cut of many plants from people along the trails, which has a large impact on these plants’ ability to reproduce. Habitat destruction and excessive poaching is having a severe Nepenthes Veitchii 'Candy Dreams'; created by Dominick Gravine effect on plant species not only in places like Borneo, but also worldwide. Although many people deny human caused endangerment of plant species due to excessive poaching, reckless destruction of habitats globally, and climate change, Effects of Poaching, Habitat Destruction, and Climate Change On Nepenthes Lucas Barron; 4/27/2018 2 has a profound, and rather severe, effect on plant species globally, but especially in extremely delicate regions of the world, such as the Indonesian islands. -
Assessing Genetic Diversity for the USA Endemic Carnivorous Plant Pinguicula Ionantha R.K. Godfrey (Lentibulariaceae)
Conserv Genet (2017) 18:171–180 DOI 10.1007/s10592-016-0891-9 RESEARCH ARTICLE Assessing genetic diversity for the USA endemic carnivorous plant Pinguicula ionantha R.K. Godfrey (Lentibulariaceae) 1 1 2 3 David N. Zaya • Brenda Molano-Flores • Mary Ann Feist • Jason A. Koontz • Janice Coons4 Received: 10 May 2016 / Accepted: 30 September 2016 / Published online: 18 October 2016 Ó Springer Science+Business Media Dordrecht 2016 Abstract Understanding patterns of genetic diversity and data; the dominant cluster at each site corresponded to the population structure for rare, narrowly endemic plant spe- results from PCoA and Nei’s genetic distance analyses. cies, such as Pinguicula ionantha (Godfrey’s butterwort; The observed patterns of genetic diversity suggest that Lentibulariaceae), informs conservation goals and can although P. ionantha populations are isolated spatially by directly affect management decisions. Pinguicula ionantha distance and both natural and anthropogenic barriers, some is a federally listed species endemic to the Florida Pan- gene flow occurs among them or isolation has been too handle in the southeastern USA. The main goal of our recent to leave a genetic signature. The relatively low level study was to assess patterns of genetic diversity and of genetic diversity associated with this species is a con- structure in 17 P. ionantha populations, and to determine if cern as it may impair fitness and evolutionary capability in diversity is associated with geographic location or popu- a changing environment. The results of this study provide lation characteristics. We scored 240 individuals at a total the foundation for the development of management prac- of 899 AFLP markers (893 polymorphic markers). -
Carnivorous Plant Newsletter Vol 48, No 2, June 2019
Byblis in cultivation in the tropics and in temperate climates Gregory Allan • Birmingham • United Kingdom • [email protected] Cindy Chiang • Singapore • [email protected] This article has been written based mostly on the authors’ experiences in growing Byblis in the UK and in Singapore. It is hoped that growers in regions with different climates will be able to extrapo- late from the information provided here, adjusting the methods described below to suit their own growing conditions. Hopefully much of the information provided here is universal in its application. Introduction If any genus of carnivorous plants deserves to be better known, both by horticulturalists and botanists, it is Byblis. The common name (ironically rarely used by enthusiasts) for the genus is “rainbow plants”, on account of the prismatic effect that can be produced when the sun shines on their copiously-produced sticky glands. All species follow a basic morphological plan: they have a central stem from which radiate numerous filiform leaves and scapes with showy flowers that typi- cally have purple petals (although white forms of most species are known) and vivid yellow anthers. Virtually all parts of the plants are covered in mucilage-tipped stalked glands (colloquially referred to as “tentacles”), which efficiently capture small insects, as well as microscopic sessile digestive glands. Another interesting characteristic of the genus is the presence of pulvini in most, if not all, species. Pulvini are swellings at the base of pedicels which, usually after successful pollination, uti- lize hydraulics to bend the pedicel, and consequently the developing fruit, downwards towards the ground. This phenomenon was discovered by Brian Barnes in the early 21st century. -
Carnivorous Plant Newsletter V44 N4 December 2015
Technical Refereed Contribution Soil pH values at sites of terrestrial carnivorous plants in south-west Europe Lubomír Adamec • Institute of Botany of the Czech Academy of Sciences • Dukelská 135 • CZ-379 82 Trˇebonˇ • Czech Republic • [email protected] Keywords: Soil water pH, neutral soils, Pinguicula spp., Drosera intermedia, Drosophyllum lusitanicum. Abstract: Although the majority of terrestrial carnivorous plants grow in acidic soils at a pH of 3.5-5.5, there are many dozens of carnivorous species, mostly mountainous or rocky Pinguicula species, which grow preferen- tially or strictly in neutral or slightly alkaline soils at pHs between 7-8. Knowledge of an optimum soil pH value and an amplitude of this factor may be important not only for understanding the ecology of various species and their conservation, but also for successfully growing them. I report soil pH values at microsites of 15 terrestrial carnivorous plant species or subspecies in SW Europe. Introduction The majority of terrestrial carnivorous plants grow in wetlands such as peat bogs, fens, wet meadows, or wet clayish sands. The soils have usually low available mineral nutrient content (N, P, K, Ca, Mg), are hypoxic or anoxic and usually acidic (Juniper et al. 1989; Adamec 1997; Rice 2006). Unlike mineral nutritional character- istics of these soils, which have commonly been studied and related to carnivorous plant growth in the field or greenhouse experiments and which have also been published (for the review see Adamec 1997), relatively very little is known about the relationship between soil pH and growth of terrestrial carnivorous plants. Although some limited knowledge of soil pH at habitats of carnivorous plants or in typical substrates exist among botanists and growers (e.g., Roberts & Oosting 1958; Aldenius et al. -
The Vascular Flora of Rarău Massif (Eastern Carpathians, Romania). Note Ii
Memoirs of the Scientific Sections of the Romanian Academy Tome XXXVI, 2013 BIOLOGY THE VASCULAR FLORA OF RARĂU MASSIF (EASTERN CARPATHIANS, ROMANIA). NOTE II ADRIAN OPREA1 and CULIŢĂ SÎRBU2 1 “Anastasie Fătu” Botanical Garden, Str. Dumbrava Roşie, nr. 7-9, 700522–Iaşi, Romania 2 University of Agricultural Sciences and Veterinary Medicine Iaşi, Faculty of Agriculture, Str. Mihail Sadoveanu, nr. 3, 700490–Iaşi, Romania Corresponding author: [email protected] This second part of the paper about the vascular flora of Rarău Massif listed approximately half of the whole number of the species registered by the authors in their field trips or already included in literature on the same area. Other taxa have been added to the initial list of plants, so that, the total number of taxa registered by the authors in Rarău Massif amount to 1443 taxa (1133 species and 310 subspecies, varieties and forms). There was signaled out the alien taxa on the surveyed area (18 species) and those dubious presence of some taxa for the same area (17 species). Also, there were listed all the vascular plants, protected by various laws or regulations, both internal or international, existing in Rarău (i.e. 189 taxa). Finally, there has been assessed the degree of wild flora conservation, using several indicators introduced in literature by Nowak, as they are: conservation indicator (C), threat conservation indicator) (CK), sozophytisation indicator (W), and conservation effectiveness indicator (E). Key words: Vascular flora, Rarău Massif, Romania, conservation indicators. 1. INTRODUCTION A comprehensive analysis of Rarău flora, in terms of plant diversity, taxonomic structure, biological, ecological and phytogeographic characteristics, as well as in terms of the richness in endemics, relict or threatened plant species was published in our previous note (see Oprea & Sîrbu 2012). -
Floral Micromorphology and Nectar Composition of the Early Evolutionary Lineage Utricularia (Subgenus Polypompholyx, Lentibulariaceae)
Protoplasma https://doi.org/10.1007/s00709-019-01401-2 ORIGINAL ARTICLE Floral micromorphology and nectar composition of the early evolutionary lineage Utricularia (subgenus Polypompholyx, Lentibulariaceae) Bartosz J. Płachno1 & Małgorzata Stpiczyńska 2 & Piotr Świątek3 & Hans Lambers4 & Gregory R. Cawthray4 & Francis J. Nge5 & Saura R. Silva6 & Vitor F. O. Miranda6 Received: 1 April 2019 /Accepted: 4 June 2019 # The Author(s) 2019 Abstract Utricularia (Lentibulariaceae) is a genus comprising around 240 species of herbaceous, carnivorous plants. Utricularia is usually viewed as an insect-pollinated genus, with the exception of a few bird-pollinated species. The bladderworts Utricularia multifida and U. tenella are interesting species because they represent an early evolutionary Utricularia branch and have some unusual morphological characters in their traps and calyx. Thus, our aims were to (i) determine whether the nectar sugar concentrations andcompositioninU. multifida and U. tenella are similar to those of other Utricularia species from the subgenera Polypompholyx and Utricularia, (ii) compare the nectary structure of U. multifida and U. tenella with those of other Utricularia species, and (iii) determine whether U. multifida and U. tenella use some of their floral trichomes as an alternative food reward for pollinators. We used light microscopy, histochemistry, and scanning and transmission electron microscopy to address those aims. The concentration and composition of nectar sugars were analysed using high-performance liquid chroma- tography. In all of the examined species, the floral nectary consisted of a spur bearing glandular trichomes. The spur produced and stored the nectar. We detected hexose-dominated (fructose + glucose) nectar in U. multifida and U. tenella as well as in U. -
Phylogeny and Biogeography of the Carnivorous Plant Family Droseraceae with Representative Drosera Species From
F1000Research 2017, 6:1454 Last updated: 10 AUG 2021 RESEARCH ARTICLE Phylogeny and biogeography of the carnivorous plant family Droseraceae with representative Drosera species from Northeast India [version 1; peer review: 1 approved, 1 not approved] Devendra Kumar Biswal 1, Sureni Yanthan2, Ruchishree Konhar 1, Manish Debnath 1, Suman Kumaria 2, Pramod Tandon2,3 1Bioinformatics Centre, North-Eastern Hill University, Shillong, Meghalaya, 793022, India 2Department of Botany, North-Eastern Hill University, Shillong, Meghalaya, 793022, India 3Biotech Park, Jankipuram, Uttar Pradesh, 226001, India v1 First published: 14 Aug 2017, 6:1454 Open Peer Review https://doi.org/10.12688/f1000research.12049.1 Latest published: 14 Aug 2017, 6:1454 https://doi.org/10.12688/f1000research.12049.1 Reviewer Status Invited Reviewers Abstract Background: Botanical carnivory is spread across four major 1 2 angiosperm lineages and five orders: Poales, Caryophyllales, Oxalidales, Ericales and Lamiales. The carnivorous plant family version 1 Droseraceae is well known for its wide range of representatives in the 14 Aug 2017 report report temperate zone. Taxonomically, it is regarded as one of the most problematic and unresolved carnivorous plant families. In the present 1. Andreas Fleischmann, Ludwig-Maximilians- study, the phylogenetic position and biogeographic analysis of the genus Drosera is revisited by taking two species from the genus Universität München, Munich, Germany Drosera (D. burmanii and D. Peltata) found in Meghalaya (Northeast 2. Lingaraj Sahoo, Indian Institute of India). Methods: The purposes of this study were to investigate the Technology Guwahati (IIT Guwahati) , monophyly, reconstruct phylogenetic relationships and ancestral area Guwahati, India of the genus Drosera, and to infer its origin and dispersal using molecular markers from the whole ITS (18S, 28S, ITS1, ITS2) region Any reports and responses or comments on the and ribulose bisphosphate carboxylase (rbcL) sequences. -
Grace Goode's Miniature Neoregelia Hybrids
Bromeliaceae VOLUME XLI - No. 6 - NOV/DEC 2007 The Bromeliad Society of Queensland Inc. P. O. Box 565, Fortitude Valley Queensland, Australia 4006, Home Page www.bromsqueensland.com OFFICERS PRESIDENT Olive Trevor (07) 3351 103 VICE PRESIDENT Barry Kable PAST PRESIDENT Bob Reilly (07) 3870 809 SECRETARY Chris Coulthard TREASURER Glenn Bernoth (07) 4661 3 634 BROMELIACEAE EDITOR Ross Stenhouse SHOW ORGANISER Bob Cross COMMITTEE David Rees, Paul Dunstan, Ann McBur- nie, Arnold James,Viv Duncan MEMBERSHIP SECRETARY Roy Pugh (07) 363 5057 SEED BANK CO-ORDINATOR Doug Parkinson (07) 5497 50 AUDITOR Anna Harris Accounting Services SALES AREA STEWARD Pat Barlow FIELD DAY CO-ORDINATOR Nancy Kickbusch LIBRARIAN Evelyn Rees ASSISTANT SHOW ORGANISER Phil Beard SUPPER STEWARDS Nev Ryan, Barry Genn PLANT SALES Nancy Kickbusch (Convenor) N. Poole (Steward) COMPETITION STEWARDS Dorothy Cutcliffe, Alan Phythian CHIEF COMPETITION STEWARD Jenny Cakurs HOSTESS Gwen Parkinson BSQ WEBMASTER Ross Stenhouse LIFE MEMBERS Grace Goode OAM Peter Paroz, Michael O’Dea Editors Email Address: [email protected] The Bromeliad Society of Queensland Inc. gives permission to all Bromeliad Societies to re- print articles in their journals provided proper acknowledgement is given to the original author and the Bromeliaceae, and no contrary direction is published in Bromeliaceae. This permission does not apply to any other person or organisation without the prior permission of the author. Opinions expressed in this publication are those of the individual contributor and may not neces- sarily reflect the opinions of the Bromeliad Society of Queensland or of the Editor Authors are responsible for the accuracy of the information in their articles. -
Flower Nectar Trichome Structure of Carnivorous Plants from the Genus Butterworts Pinguicula L
Protoplasma (2020) 257:245–259 https://doi.org/10.1007/s00709-019-01433-8 ORIGINAL ARTICLE Flower nectar trichome structure of carnivorous plants from the genus butterworts Pinguicula L. (Lentibulariaceae) Krzysztof Lustofin1 & Piotr Świątek2 & Vitor F. O. Miranda3 & Bartosz J. Płachno1 Received: 23 June 2019 /Accepted: 7 August 2019 /Published online: 19 August 2019 # The Author(s) 2019 Abstract Pinguicula (Lentibulariaceae) is a genus comprising around 96 species of herbaceous, carnivorous plants, which are extremely diverse in flower size, colour and spur length and structure as well as pollination strategy. In Pinguicula,nectarisformedinthe flower spur; however, there is a gap in the knowledge about the nectary trichome structure in this genus. Our aim was to compare the nectary trichome structure of various Pinguicula species in order to determine whether there are any differences among the species in this genus. The taxa that were sampled were Pinguicula moctezumae, P. moranensis, P. re ct if ol ia, P. emarginata and P. esseriana. We used light microscopy, histochemistry, scanning and transmission electron microscopy to address those aims. We show a conservative nectary trichome structure and spur anatomy in various Mexican Pinguicula species. The gross structural similarities between the examined species were the spur anatomy, the occurrence of papillae, the architecture of the nectary trichomes and the ultrastructure characters of the trichome cells. However, there were some differences in the spur length, the size of spur trichomes, the occurrence of starch grains in the spur parenchyma and the occurrence of cell wall ingrowths in the terminal cells of the nectary trichomes. Similar nectary capitate trichomes, as are described here, were recorded in the spurs of species from other Lentibulariaceae genera.