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PUBLIC ANNOUNCEMENT- WESTERN INVASIVES NETWORK Revised March, 2021 1 847 NW Monroe Ave. Corvallis, OR 97330 (541) 910-8769 Photo: BJ Schoenmakers 1Photo:************ Liz West STATEWIDE INVASIVE SPECIES ALERT************ Zebra Mussels What Can You Do? (cont’d) Zebra mussels (Dreissena polymorpha) If you have these moss balls in an have been detected in moss balls that outdoor pond, or an aquarium with are sold at pet stores across the United outflow, please remove them and place States, including Oregon. Of particular in a watertight container or plastic bag concern are the “Betta Buddy” marimo and contact the Oregon Department of moss balls sold under the Imagitarium Fish & Wildlife at (503)-947-6308; or brand name sold at pet stores like Petco, [email protected] and possibly others. It is likely that other brands use the same supplier. If you have these moss balls in a fully contained home aquarium, please Zebra mussel found in marimo moss ball at a pet Why is it a problem? remove them and place in a watertight store in Washington State, 2021. While they are In addition to drastic habitat container. Then, place the container in a extremely small, especially in this limiting modification and as a vector for avian freezer for at least 3 days and throw the environment, the namesake zebra stripes are unmistakable. (Photo courtesy of USGS) disease, zebra mussels cause hundreds moss in the garbage. of millions of dollars in damages to infrastructure like hydropower, irrigation If you do not have a freezer, you can also and municipal water supplies. boil the moss balls for a few minutes. Establishment of zebra mussels in With fish and moss removed, disinfect Oregon waterways would be water and other tank contents, including catastrophic to industry, tourism and filters, by adding 1-2 cups of bleach per recreation. gallon of water and let sit for one hour. What Can You Do? Dispose of disinfected water and refill First, here’s what NOT to do: tank with fresh water. Click here for detailed information on -DO NOT dump your tank water or any of its contents into any water body, other decontamination methods. If zebra mussels are introduced in Oregon, personal equipment and critical infrastructure are at extreme household sink, toilet, drain or outdoor As always, please report invasive species risk. Hydropower facilities and irrigation networks storm drain. While a tank infestation is sightings online at: https://oregoninvasiveshotline.org/ can be devastated and aquatic ecosystems can be unfortunate, it is at least contained. severely disrupted. (Photo: Tom Britt) .

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Internal Microbial Zonation Assists in the Massive Growth of Marimo, a Lake Ball of Aegagropila Linnaei in Lake Akan
bioRxiv preprint doi: https://doi.org/10.1101/2021.03.20.434239; this version posted March 20, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 1 Internal microbial zonation assists in the massive growth of marimo, a lake ball of 2 Aegagropila linnaei in Lake Akan 3 Ryosuke Nakai,1,* Isamu Wakana,2 Hironori Niki1,3,¶ 4 1 Microbial Physiology Laboratory, Department of Gene Function and Phenomics, National 5 Institute of Genetics, 1111, Yata, Mishima, Shizuoka 411-8540 Japan 6 2 Kushiro International Wetland Center, 7-5 Kuroganecho, Kushiro, Hokkaido 085-8505, Japan 7 3 Department of Genetics, SOKENDAI (The Graduate University for Advanced Studies), 1111, 8 Yata, Mishima, Shizuoka 411-8540 Japan 9 * Present address: Microbial Ecology and Technology Research Group, Bioproduction Research 10 Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1, 11 Tsukisamu-higashi, Toyohira-ku, Sapporo, Hokkaido 062-8517 Japan 12 ¶ Correspondence to: Hironori Niki, Microbial Physiology Laboratory, Department of Gene 13 Function and Phenomics, National Institute of Genetics, 1111, Yata, Mishima, Shizuoka 411- 14 8540 Japan; E-mail: [email protected]; Tel: +81-55-981-6827; Fax: +81-55-981-6870 bioRxiv preprint doi: https://doi.org/10.1101/2021.03.20.434239; this version posted March 20, 2021. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 15 Abstract 16 Marimo (lake ball) is an uncommon ball-like aggregation of the green alga, Aegagropila linnaei.
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Marine Botany Midterm 2014 Name:______
Marine Botany Midterm 2014 Name:_________________________ Compare and Contrast the following items (20pts): 1) spore vs gamete Spore: unicellular, must settle & grow, product of mitosis(Mt) or meiosis (Me) Gamete: unicellular, must fuse or die, product of mitosis(Mt) or meiosis (Me) 2) monoecious vs dioecious Dioecious- having the male & female reproductive structure borne on separate individual plants; said of the species -two houses Monoecious- having the male & female reproductive structure borne on the same individual plants -one house 3) phycoplast vs. phragmoplast Phycoplast: microtubules parallel to dividing plane -rare in algae Phragmoplast: double microtubules perpendicular to dividing plane-common in algae & land plants 4) haplontic vs diplontic Haplontic: 1N thallus, the zygote is the only diploid stage Diplontic: 2N thallus, the gametes are the only haploid stage 5) parenchymatous vs. coenocytic thallus construction Parenchyma – undifferentiated, isodiometric cells generated by a meristem Cells division in any plane , not filamentous Coenocytic – thallus made up of filaments, multi-nucleate, lacking crosswalls, siphonous 1 Marine Botany Midterm 2014 Name:_________________________ Match with the correct Division: Chlorophyta, Heterokontophyta, both, or neither (12 points) a. Plantae __Chloro__________________ b. Chlorophyll A _Both___________________ c. Flowers _______Neither_____________ d. Phycobilins _____Neither_______________ e. Amylose ___Chloro_________ f. Thylakoids in stacks of 2-6 _________Chloro___ g. Bacteria ______Neither____________ h. Flagella ____Both_____________ i. Haplontic life history _____Chloro_________ j. 2 endosymobiotic event ____Hetero__________ k. Chromalvaeolates ______Hetero_________ l. Mannitol___________Hetero___________ Match the following Classes or Orders to the appropriate characteristic, term, or genus. Each term will be used only once. (10 points) Cladophorales ___C_____ A. parenchymatous thallus Ulotricales ___J_____ B. clockwise basal body orientation Chlorophyceae _____B____ C.
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Invasive Zebra Mussels Confirmed in Aquarium Product Sold in Iowa
3/9/2021 March 8 Iowa Outdoors FOR IMMEDIATE RELEASE March 8, 2021 Invasive zebra mussels confirmed in aquarium product sold in Iowa The Iowa Department of Natural Resources (DNR) has confirmed that a popular aquarium product sold at some aquarium supply stores and pet stores in Iowa may contain zebra mussels, a highly invasive species that can cause severe damage to the food chain and infrastructure if released in lakes and rivers. The affected products are moss (Marimo) balls, which are commonly sold in pet stores to help absorb harmful nutrients in the water and limit the growth of undesirable algae in home aquariums. Moss balls recently distributed nationwide were contaminated with zebra mussels. A container of Marimo balls sold as “Betta Buddy” was first found to be contaminated with an adult zebra mussel at a Petco store in Washington state on March 3. Since then, contaminated Marimo balls have been found in pet and aquarium stores in several states. Pet stores across the nation, including Iowa, have removed the product from their shelves. “State and federal law enforcement have been checking pet stores across Iowa and removing the moss balls if they hadn't been removed already,”said Kim Bogenschutz, aquatic invasive species coordinator for the Iowa DNR. Aquarium owners are urged not to purchase this product from stores or online. If you have bought this item in the last month, dispose of it properly and sanitize your tank(s) using the following guidelines to prevent the spread of zebra mussels from aquariums. Disposal and Sanitation Guidelines Place the Marimo ball in a sealable plastic bag and freeze for at least 24 hours, OR Place the moss ball in boiling water for at least 1 full minute, OR Submerge the moss ball in chlorine bleach, diluted to one cup of bleach per gallon of water, OR Submerge the moss ball in undiluted white vinegar for 20 minutes.
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A Geometrical Approach Explains Lake Ball (Marimo) Formations in The
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No More Lake Balls (Aegagropila Linnaei Ku¨Tzing, Cladophorophyceae, Chlorophyta) in the Netherlands?
Aquat Ecol (2009) 43:891–902 DOI 10.1007/s10452-009-9231-1 No more lake balls (Aegagropila linnaei Ku¨tzing, Cladophorophyceae, Chlorophyta) in The Netherlands? Christian Boedeker Æ Anne Immers Received: 30 May 2008 / Accepted: 6 January 2009 / Published online: 23 January 2009 Ó The Author(s) 2009. This article is published with open access at Springerlink.com Abstract Aegagropila linnaei, a freshwater green compared with different growth forms and habitats macroalga, had been abundant in several locations in from several other locations outside The Netherlands. The Netherlands before the 1960s. Both the ‘lake The sequences confirm the identity of the Dutch ball’ form of this alga and dense unattached mats material and indicate very little divergence both floating over the sediment have been described from between populations in different locations and these locations. After 1967, this species has not been between different growth forms. recorded anymore from The Netherlands. In 2007, several historical collection sites were surveyed for Keywords Cladophora aegagropila Á extant populations of A. linnaei. All habitats have Eutrophication Á Threatened freshwater algae Á changed drastically during the last 50 years and were Lake balls Á LSU rDNA Á Marimo Á affected severely by eutrophication. Populations of A. Molecular sequences Á Red list linnaei seem to have become extinct in all but one location (Boven Wijde, province Overijssel), where we found very small amounts of attached filaments. The attached form had not been reported previously Introduction from The Netherlands. Environmental conditions do not seem suitable anymore to maintain extensive The green macroalga Aegagropila linnaei Ku¨tzing unattached growth forms including the enigmatic (Cladophorophyceae) occurs in freshwater and some lake balls, and the species must be regarded as brackish environments and has essentially a palae- threatened in The Netherlands and we propose to arctic distribution (van den Hoek 1963; Pankow include A.
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