Association with vessel vectors

Actual evidence of being found in samples in a particular vector from any world region.

Anchor and anchor chains. Organisms found on anchors, anchor chain or within attached sediments, including anchor chain lockers.

Ballast water. Ballast water means water with its suspended matter taken on board a ship to control trim, list, draught, stability or stresses of the ship.

Biofouling. Biofouling means the accumulation of aquatic organisms such as micro-organisms, plants, and animals on surfaces and structures immersed in or exposed to the aquatic environment. Biofouling can include microfouling and macrofouling.

  • Macrofouling means large, distinct multicellular organisms visible to the human eye such as barnacles, tubeworms, or fronds of algae.
  • Microfouling means microscopic organisms including bacteria and diatoms and the slimy substances that they produce.
Biofouling comprised of only microfouling is commonly referred to as a slime layer.

Sea chest. The sea chests are cavities (an opening with protection grid) at the bottom side of the ships’ hull (an opening for pumping in and out water for, e.g., ballasting, firefighting) where aquatic organisms may settle and be transported.

Tank sediments. Matter settled out of ballast water within a ship.

Bioaccumulation association

Natural toxins. An organism that accumulates toxins naturally produced by other organisms, such as phytotoxins, in its tissues.

Anthropogenic chemical compounds. An organism that accumulates human-produced chemicals, such as pharmaceuticals, heavy metals, pesticides, dioxins, in its tissues.

Characteristic feeding method

Chemoautotroph. An organism that obtains metabolic energy by oxidation of inorganic substrates such as sulphur, nitrogen or iron.

Deposit feeder – Subsurface. Synonym: detritivore. An organism feeding on fragmented particulate organic matter in the substratum.

Deposit feeder – Surface. Synonym: detritivore. An organism feeding on fragmented particulate organic matter from the surface of the substratum.

Grazer. An organism feeding on plants (higher aquatic plants, benthic algae and phytoplankton) and/or sessile animals organisms.

Herbivore. An organism feeding on plants (higher aquatic plants, benthic algae and phytoplankton).

Mixotroph. An organism both autotrophic and heterotrophic.

Omnivore. An organism feeding on mixed diet of plant and animal material.

Parasite. Feeding on the tissues, blood or other substances of a host.

Photoautotroph. An organism that obtains metabolic energy from light by photosynthesis (e.g. seaweeds, phytoplankton).

Planktotroph. An organism feeding on plankton.

Predator. An organism that feeds by preying on other organisms, killing them for food.

Scavenger. An organism feeding on dead and decaying organic material.

Suspension feeder – Active. An organism feeding on particulate organic matter, including plankton, suspended in the water column, collecting it actively by sweeping or pumping (creating feeding currents).

Suspension feeder – Passive. An organism feeding on particulate organic matter, including plankton, suspended in the water column, utilizing the natural flow to bring particles in contact with feeding structures.

Symbiont contribution. Where some dietary component(s) are provided by symbiotic organisms (e.g. Anemonia with zooxanthellae).

Developmental trait

Brooding. The incubation of eggs either inside or outside the body. Eggs may be brooded to a variety of developmental stages. Males or females may be responsible for brooding.

Direct development. A life cycle lacking a larval stage.

Spawning. The release of gametes into the water.

Lecithotrophy. Development at the expense of internal resources (i.e. yolk) provided by the female.

Parental care. Any form of parental behaviour that is likely to increase the fitness of offspring.

Planktotrophy. Feeding on plankton.

Resting stages. The quiescent stage in the life cycle (dormancy, diapause).

Viviparous. Producing live offspring from within parental body.

Habitat modifying ability potential

Autogenic ecosystem engineers. Organisms which change the environment via their own physical structures (i.e. their living and dead tissues) such as corals, oysters, kelps, sea grasses, etc.

Allogenic ecosystem engineers. Organisms which modify the environment by causing physical state changes in biotic and abiotic materials that, directly or indirectly, modulate the availability of resources to other species (e.g. excavating deep burrows which other organisms co-occupy, damming the water flow, etc).

Keystone species. A keystone species is crucial in maintaining the organization and diversity of its ecological community, by determining the types and numbers of other species.

Life form

Neuston. Organisms that live on (epineuston) or under (hyponeuston) the surface film of water bodies.

Zoobenthos. Animals living on or in the seabed.

Phytobenthos. Algae and higher plants living on or in the seabed.

Zooplankton. Animals living in the water column, unable to maintain their position independent of water movements.

Phytoplankton. Microscopic plankton algae and cyanobacteria.

Benthopelagos. Synonyms: hyperbenthic, benthopelagic, nektobenthic, demersal. An organism living at, in or near the bottom of the sea, but having the ability to swim.

Nekton. Actively swimming aquatic organisms able to move independently of water currents.

Parasite. An organism intimately associated with and metabolically dependent on another living organism (host) for completion of its life cycle.

Symbiont (nonparasitic). An organism living mutually with another species without harming it. Association of two species (symbionts) may be mutually beneficial.

Mobility

Boring. An organism capable of penetrating a solid substrate by mechanical scraping or chemical dissolution.

Burrowing. An organism capable of digging in sediment.

Crawling. An organism moving slowly along on the substrate.

Drifting. An organism whose movement is dependent on wind or water currents.

Permanent attachment. Non-motile; permanently attached at the base. Also includes permanent attachment to a host.

Swimming. An organism capable of moving through the water by means of fins, limbs or appendages.

Temporary attachment. Temporary / sporadic attachment. Attached to a substratum but capable of movement across (or through) it (e.g. Actinia). Also includes temporary attachment to a host.

Native origin

The region the species originates from.

References



References should follow the standard of Biological invasions:


Journal article
Gamelin FX, Baquet G, Berthoin S, Thevenet D, Nourry C, Nottin S, Bosquet L (2009) Effect of high intensity intermittent training on heart rate variability in prepubescent children. Eur J Appl Physiol 105:731-738. doi: 10.1007/s00421-008-0955-8
Ideally, the names of all authors should be provided, but the usage of “et al” in long author lists will also be accepted:
Smith J, Jones M Jr, Houghton L et al (1999) Future of health insurance. N Engl J Med 965:325–329


Article by DOI


Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. J Mol Med. doi:10.1007/s001090000086


Book
South J, Blass B (2001) The future of modern genomics. Blackwell, London


Book chapter
Brown B, Aaron M (2001) The politics of nature. In: Smith J (ed) The rise of modern genomics, 3rd edn. Wiley, New York, pp 230-257


Online document
Cartwright J (2007) Big stars have weather too. IOP Publishing PhysicsWeb. http://physicsweb.org/articles/news/11/6/16/1. Accessed 26 June 2007


Dissertation
Trent JW (1975) Experimental acute renal failure. Dissertation, University of California

Reproductive frequency

Iteroparous. Organisms breeding more than once in their lifetime.

Semelparous. Organisms breeding once in their lifetime.

Reproductive type

Asexual. Budding, Fission, Fragmentaion, including parthenogenesis. A form of asexual multiplication in which:
a) a new individual begins life as an outgrowth from the body of the parent. It may then separate to lead an independent existence or remain connected or otherwise associated to form a colonial organism;
b) the ovum develops into a new individual without fertilization;
c) division of the body into two or more parts each or all of which can grow into new individuals is involved.

Self-fertilization. Selfing or autogamy. The union of a male and female gamete produced by the same individual.

Sexual. Permanent hermaphrodite, Protandrous hermaphrodite, Protogynous hermaphrodite, Gonochoristic.
Capable of producing both ova and spermatozoa either at the same time. A condition of hermaphroditism in plants and animals where male gametes mature and are shed before female gametes mature or vice versa.
Having separate sexes.

Salinity

The exact salinity range if known (psu), else salinity zone(s) according to the Venice system:
1. Limnetic [<0.5psu]
2. β-Oligohaline [0.5-3psu]
3. α-Oligohaline [3-5psu]
4. β-Mesohaline [5-10psu]
5. α-Mesohaline [10-18psu]
6. Polymixohaline [18-30psu]
7. Euhaline [30-40psu]
8. Hypersaline [>40psu]

Sociability

Colonial. Descriptive of organisms produced asexually which remain associated with each other; in many animals, retaining tissue contact with other polyps or zooids as a result of incomplete budding.

Gregarious. Organisms living in groups or communities, growing in clusters.

Solitary. Living alone, not gregarious.

Sub-species level

A geographical subset of a species showing discrete differences in morphology, coloration or other features when compared with other members of the species. Subspecies may also differ in their habitat or behavior, but they can interbreed. Often the lowest taxonomic level within a classification system.

Synonym

Valid synonyms of a species (not all of them).

Toxicity

Poisonous. An organism capable of producing poison that gains entry to another organism body via the gastrointestinal tract, the respiratory tract, or via absorption through intact body layers.

Venomous. An organism capable of producing poison, usually injected through another organism intact skin by bite or sting.

Not relevant. Neither poisonous nor venomous.

Public domain: Species account

Species Limnoria lignorum [WoRMS]
Authority (Rathke, 1799)
Family Limnoriidae  
Order Isopoda  
Class Malacostraca  
Phylum Arthropoda  
Synonym (?)
Sub-species level (?) Not entered
Native origin (?) Ocean: Pacific
Life form / Life stage (?)
 AdultJuvenileLarvaeEggsResting stage
Neuston
ZoobenthosXX
Phytobenthos
Zooplankton
Phytoplankton
Benthopelagos
Nekton
Ectoparasite
Endoparasite
Symbiont (non parasitic)
Sociability / Life stage (?)
 AdultJuvenileLarvaeEggsResting stage
Solitary
GregariousXXX
Colonial
Reproductive frequency (?) Iteroparous
Reproductive type (?) Sexual

References:
Eltringham, S. K., Hockley, A. R. 1961. Migration and reproduction of the wood‐boring isopod, Limnoria, in Southampton water. Limnology and Oceanography, 6(4), pp. 467-481.

Comments:
These wood-boring organisms are generally found in heterosexual pairs. Females tend to position themselves at the head of a tunnel with the male behind. The number of eggs laid can be from 10 to 23 eggs, but numbers vary from region to region. The eggs are incubated in a brood pouch formed of four pairs of overlapping oostegites. Once hatched, parents (usually the females) remain in the inner regions of the burrows to protect their brood. Juveniles are thus well sheltered from any adverse outside influences and benefit from this form of extended parental care.
Developmental trait (?) Brooding
Direct development

References:
Eltringham, S. K., Hockley, A. R. 1961. Migration and reproduction of the wood‐boring isopod, Limnoria, in Southampton water. Limnology and Oceanography, 6(4), pp. 467-481.

Comments:
The eggs of L. lignorum are retained by the female in the brood pouch under her thorax. The eggs hatch directly into mancae, juveniles that are miniature versions of the adult, which means there is no free-living larval stage to aid dispersal of this species.
Females of this species carry around 22 large eggs in their marsupium or pouch between the front legs. The eggs are nearly 1/4 the width of the body. They do not hatch into a larval stage but instead hatch like small adults which begin burrowing. Therefore gribble colonies in wood are quite localized and spread slowly across the wood surface as they reproduce and start more burrows.
Characteristic feeding method / Life stage (?)
 AdultJuvenileLarvaeEggsResting stage
Photoautotroph
Mixotroph
Suspension feeder – Active
Suspension feeder – Passive
Deposit feeder – Surface
Deposit feeder – Sub-surface
Omnivore
HerbivoreXX
Scavenger
Symbiont contribution
Planktotroph
Chemoautotroph
Predator
Grazer


References (not structured):
Daniel, G., Nilsson, T., Cragg, S. 1991. Limnoria lignorum ingest bacterial and fungal degraded wood. Holz als Roh-und werkstoff, 49(12), pp. 488-490.

Comments:
L. lignorum ingest wood fragments as they burrow. They do not seem to house bacteria in their gut that are able to digest lignin. They may also feed on fungal hyphae directly or may consume them indirectly in wood that is already softened as a result of attack by fungi and bacteria
Mobility / Life stage (?)
 AdultJuvenileLarvaeEggsResting stage
Swimmer
CrawlerXX
Burrower
Drifter
Temporary attachment
Permanent attachment
BorerXX


Comments:
L. lignorum is a wood borer and in favourable conditions can be present in large numbers, with densities of as many as four hundred individuals per 1 in3 (16.4 cm3) of wood. It bores its way into wood to a depth of about 12 mm.
Salinity tolerance range (?) Exact range: 6 - 16

References:
Eltringham, S. K. 1961. The effect of salinity upon the boring activity and survival of Limnoria (Isopoda). Journal of the Marine Biological Association of the United Kingdom, 41(3), pp. 785-797.

Comments:
Low salinity was the direct cause of reduced boring activity and boring ceased below 10‰. Over 15-20 days a salinity of 6‰ proved fatal for Limnoria. Eltringham (1961a) found no reduction in survival in concentrated salinities up to a value of 48‰, the highest salinity examined. Although no long-term experiments were conducted, generally, areas with uniformly low salinities (below 10‰) and those having wide ranges of salinity (0-35‰) are considered as unfavorable for the development and establishment of Limnoria.
Habitat modifying ability potential (?) Allogenic ecosystem engineers

References:
Daniel, G., Nilsson, T., Cragg, S. 1991. Limnoria lignorum ingest bacterial and fungal degraded wood. Holz als Roh-und werkstoff, 49(12), pp. 488-490.

Comments:
It is found in shallow water in the North Atlantic and North Pacific Ocean where it tunnels into wood and attacks and destroys submerged wooden structures.
Toxicity / Life stage (?) Not relevant
Bioaccumulation association (?) Unknown

Comments:
Not available.
Known human health impact? Known

Comments:
Harmless.
Known economic impact? Known

References:
CABI (2023) Limnoria lignorum (gribble). Available at: https://www.cabidigitallibrary.org/doi/10.1079/cabicompendium.109146 (Accessed: 13 August 2024).

Comments:
Since the nineteenth century the damage caused by this species to wooden structures has been considered as a serious economic issue and since the mid-twentieth century the species has been viewed as a serious pest. In many areas, such as Kamchatka (Avacha Bay), the Barents Sea (Kola Bay), Vladivostok and the Sea of Japan (De-Casri Bay) L. lignorum has been reported as destroying wooden constructions at a rate of 0.4-1.4 cm per year.
Known measurable environmental impact? Known

References:
CABI (2023) Limnoria lignorum (gribble). Available at: https://www.cabidigitallibrary.org/doi/10.1079/cabicompendium.109146 (Accessed: 13 August 2024).

Comments:
Limnorids process wood debris, releasing energy stored in submerged wood and drift wood. Colonies create a complex of interconnecting tunnels, which usually have a series of pinhole-sized punctures along their length, are about 1 mm in diameter and may be found just below the surface of the infected wood. These tunnels are numerous and give the wood a characteristic lace-like appearance and a sponge-like structure.
The tunnels of the borer create niches for other organisms including annelids, marine tardigrades and other small crustaceans.
Included in the Target Species list? No

References:
HELCOM, 2009. Alien Species and Ballast Water [PDF] Available at: https://archive.iwlearn.net/helcom.fi/stc/files/shipping/Table_2_Alienspecies_%20lists_2009.pdf [Accessed 1 July 2024].
Association with vessel vectors (?) Biofouling

References:
CABI (2023) Limnoria lignorum (gribble). Available at: https://www.cabidigitallibrary.org/doi/10.1079/cabicompendium.109146 (Accessed: 13 August 2024).
Molecular information Available

BOLD (http://www.boldsystems.org/index.php/Taxbrowser_Taxonpage?searchMenu=taxonomy&query=Limnoria+lignorum&taxon=Limnoria+lignorum)

NCBI (https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?term=Limnoria+lignorum)
Created byAleksas Narščius, 2016-09-02
Last update bySandra Gečaitė, 2024-08-13