The Great Lakes and Finger Lakes have been a hot bed for invasive species for decades. The battle to keep the natural habitat protected has been fierce, difficult, and has experienced more losses than wins. However, the environmental management game that is a common narrative. Invasive species are often very difficult to manage once they have become established, but that is of course one of the reasons we are here reading, learning, and trying.

The populations of Quagga mussels (Dreissena bugensis) in these northern lakes has Archaeologists, historians, and researchers worried. Every shipwreck and sunken plane of historical significance in all the Great lakes, except for Lake Superior, is currently covered in quagga mussels. Over the decades, quagga mussel have become the dominant aquatic invasive species, becoming an even larger problem than zebra mussel. Quagga mussels can colonize deeper waters and develop much larger populations. Quagga mussels burrow into the wood of vessels, where the continue to build upon themselves into layers that can become so thick and heavy these clustered populations of mussels have been known to crush the walls, decks, and hulls of the shipwrecks. But the damage unfortunately does not stop there. These mussels also produce a stick substance that allows then to adhere to various surfaces. That in combination with their fecal matter has been seen to increase the corrosion of iron/steel ships and sunken plans covered in invasive mollusks.

With no valid way to remove the mussels underwater, the archaeologists/historians are hoping to raise as many wrecks as quickly and carefully as possible before they are further destroyed. This has been an ever-growing problem for the last few decades. In the 602 and 70s, historical wreckage was excellently preserved due to the low water temperature and could be observed safely via diving exploration. But due to the increase on invasive mollusk populations these sunken treasures are quickly becoming Swiss cheese.

Read the article: Historians race to find Great Lakes shipwrecks.

Citrus In Your Backyard!

The Asian citrus psyllid (Diaphorina citri) and the Citrus Greening pathogen (Candidatus liberibacter asiaticus) are threatening citrus in multiple Texas counties, and we need your help to collect samples to monitor the spread to ensure that you and your neighbors are not affected. This pest and pathogen are extremely detrimental to Texas citrus, both economically and agriculturally. The presence of either can greatly affect citrus yield.

TISI is offering FREE diagnostic services! If you suspect your citrus has either the psyllid pest or the Citrus Greening pathogen, or you would like your citrus plants to be part of our screening survey, contact invasives@shsu.edu.

We will send you all the instructions you will need. If you are located within 200 miles of our headquarters, we can collect samples, and/or provide traps and monitoring services ourselves. Not only will we share the results and management strategies (where applicable), but you will become part of a multi-county monitoring survey that is striving to improve the health of Texas citrus!

Also Available: TISI offers educational workshops that highlight information about the Asian citrus psyllid, the pathogen Citrus Greening, and what you need to look out for in your own backyard. If you are interested in this, TISI will provide trapping materials, assist with management strategies, and more. Don’t waste another second. Help us stop the spread!

Using the Global Invasive Species Database, specialists were able to compile a list of 100 of the world’s worst invasive alien species. Species were selected for the list using two criteria: their serious impact on biological diversity and/or human activities, and their illustration of important issues of biological invasion. To ensure a wide variety of examples, only one species from each genus was selected, which means there are many species that are absent from this list. Absence from the list does not imply that a species poses a lesser threat. REPORT.

Bat Week, October 24-31, is an annual, international celebration of the role of bats in nature, designed to raise awareness about the need for bat conservation. Texas is chock-full of bats. Texas is home of the largest number of bats in the country, (32 out of 47 species), the largest bat colony in the world (Bracken Cave Preserve near San Antonio), and the largest urban bat colony (Congress Avenue Bridge in Austin). Many North American bats suffer from a devastating fungus called white-nose syndrome.

Batweek.org is celebrating with virtual events for kids, teens and adults, as well as providing the public with an assortment of bat related ‘Teach and Learn’ printable materials for all ages, such as the ‘Bat Week In A Box’ activity collection, 'batweek cookbook', a comic, coloring pages, and more.

Additional Batweek event: October 18 (CDT) 12- 1pm, Books, Bats, and Breaking Stigmas: Inspiring Bat Conservation Through Literature. REGISTER.

This program is designed to provide the education needed for professionals and students who are managing or learning to manage invasive species. The courses include the most current invasive species identification, control, and management techniques, and how to comply with local and federal regulations.

Participants may register and enroll at any time, and will receive a certificate of invasive species management from NAISMA upon completion of the program.

All live webinars are open to the public. Recorded webinars are available to members of NAISMA.

NAISMA 2020 Webinar Schedule:

• October 4, 1pm CDT- Utilizing Invasive Plants as a Medium for Conservation Artwork. REGISTER.
• November 15, 1pm CDT- Decades-Long Partnership Successfully Eradicates Destructive Nutria Rodents from Maryland. REGISTER.
• December 20, 1pm CDT- The Dilemma for Control of Invasive Species: Incorrect Terms Limit Our Capacity to Respond. REGISTER.

Texas Gulf Coast Cooperative Weed Management Area’s Brazilian peppertree workday and meeting is coming up soon. It is a chance to join a group that will be removing invasive peppertrees in Port Aransas from Port O’Connor to Mansfield Pass to help restore the native habitat. The workday typically includes cutting peppertrees, hauling away vegetation, and treating plants or stumps with herbicide. Remember to dress for the weather. Volunteers are encouraged to wear long sleeves and long pants when working with Brazilian peppertrees. Please bring water, any tools you have, and gloves. Snake boots are also recommended if you have them. CWMA will have some tools and gloves to borrow.

Workday: October 20, 9 a.m.
700 Clark Parkway, Port Aransas, TX

Following the workday, CWMA is meeting to discuss accomplishments, current and upcoming projects, partnership opportunities, and future outreach events. The public is encouraged to attend.

Meeting: October 20, 1:30 p.m.
750 Channel View Drive, Port Aransas, TX

Registration: https://forms.gle/pkJKA2e7rR2Y69H46

Invasive Spotlight:

Northern Snakeheard
(Channa argus)

The northern snakehead (Channa argus) is a fish that looks very similar to the native bowfin (Amia calva. They both have a long cylindrical shape, long dorsal fin, and rounded tail fin. However, the snakehead has a very long anal fin that starts halfway down the body, a pelvic fin that is located close to its head, and enlarged scales on the head. Snakeheads also have a large mouth with several sharp, canine-like teeth on the lower jaw. The northern snakehead can reach length of over 80 cm (31.5 in.) and weight of 7 kg (15.4 lbs).

Northern snakeheads reach sexual maturity in 2 to 3 years, at which time females release 1,300 to 15,000 eggs per spawn (in the summer), which can occur 1 to 5 times per year. The adults build a floating nest for the eggs, which they aggressively protect from predators, eliminating other fishes in the water or biting humans that may cause a threat.

The northern snakehead has a lung-like organ, as well as gills, that requires them to breathe air. This allows them to survive in low oxygen rich waters or survive outside of water for several days if kept moist, and can travel over land to invade new bodies of water. Some species of snakehead can even live for long periods of time burrowed in mud. Northern snakeheads are also low temperature tolerant, allowing it to survive in cold water that ranges from 0 to 30 degrees C, which means they can survive in most of North America’s waterways once they become established.

Northern snakeheads have been imported to North America for the aquarium trade and may be sold live in Asian-style fish markets. No snakeheads have been found in Texas waters to date, but the threat exists. Because of the damage that can occur when they are inadvertently released into lakes and streams, all species of snakeheads are prohibited in Texas. It is illegal in this state to release into public waters, import, sell, purchase, transport, propagate, or possess any living snakehead, except under special permits issued by TPWD. Dead snakeheads (intestines removed) may be legally imported and sold.

For more information about the northern snakehead, click here.

Get Involved Today!!

The Texas Invasive Species Institute (TISI) and The Texas Research Institute for Environmental Studies (TRIES) have many surveys and projects underway. These facilities strive to provide yearly invasive species presence and absence data to the authorities. Pre-screening is one of the first lines of defense in the war against invasives. However, sometimes it is hard to do it alone.

With the aid of the public and citizen scientists, we could cover a much wider area, and gather a more substantial amount of data. When it comes to protecting our environment, there is an opportunity for everyone! Together we can make a difference, one research project at a time.

See how you can get involved by reading the projects listed below or see all the available projects on the Texas Invasives website HERE.

Aquarium Watch: Looking for Prohibited Invasive Aquatic Species

Please help texasinvasives.org and natural habitats by looking for 14 prohibited or invasive aquatic species that might be for sale in your local aquarium store(s). With just one photo you can assist us in finding and documenting which stores are selling prohibited or invasive species. Texasinvasives.org will use this information to contact the appropriate Texas institutions to ensure the appropriate steps are taken for each case.

If you would like more information please email invasives@shsu.edu, and mention you want to assist with our Aquarium Watch.

As a new segment, we are shinning the spotlight on some amazing videos about invasive species and the people that choose to work with them. There are some amazing citizens and professionals around the world that pock, prod, chase, dive, and investigate everything they can about these alien invaders. We all have the same goal, learn as much as we can to restore ecosystems and preserve our native species.

A Dangerous Beauty, the Water Hyacinth, JaxStrong Jaccksonville

The water hyacinth (Eichhornia crassipes) has invaded many water systems in the south and is slowly working its way north. This beautiful aquatic plant can quickly chock out water ways and outcompete native vegetation. The U.S. Army Corps of Engineers Invasive Management Species Branch is committed to providing technical support for the control of invasive species and ecosystem restoration program.

White Nose Syndrome in Texas, Wildlife Diversity Webinar Series, TPWD
White-nose Syndrome is a devastating disease that effects hibernating bats. Over the past couple decades, the disease has spread throughout the US and Canada, driving mass mortality events in bat populations. TPWD webinar discuses how this disease is now spreading west and how this may affect Texas bats.

Exotic Aquatics Invade Texas Waters, Texas Parks and Wildlife
Exotic aquatic species like suckermouth catfish (Hypostomus Plecostomus, red-bellied piranhas (Pygocentrus nattereri), and apple snails (Pomacea maculate) can wreak havoc on native Texas wildlife. See where these species are invading and what's being done to stop them. ?

Invasive Species Are Animals, too: Considering A Humane Approach
Invasive alien species are organisms that may threat biodiversity, but many environmental researchers think it's time to deal with that threat in a more ethical way, human way, especially since in many instances, complete eradication is highly unlikely. sciencedaily.com

The Salsa Squad Weeds Out Local Invasive Plants
Radio interview with the San Antonio chapter of the Texas Invasive Plant and Pest Council leaders, also known as the Salsa Squad, discussing invasive Chinaberry (Melia azedarach) and Chinese tallow trees (Triadica sebifera) tpr.org

‘Nature Positive’ Isn’t Just Planting A Few Trees – It’s Actually Stopping the Damage We Do
Being ‘Nature Positive’ is a new buzz word coined by an environmental alliance to encourage a future with more nature by tackling land clearing, invasive species, and climate change, while investing ecosystem restoration and rewilding. theconversation.com

Investigating Invasive Plants as Roadside Contaminant Removal Tools
A team of researchers set out to determine if invasive plants that are commonly found along salty roadsides and degraded wetland, such as Phragmites and cattails, could help remove salt and metal containments from the soil system. phys.org

Large Herbivores Keep Invasive Plants at Bay
Large herbivores, such as Elephants and buffaloes, are effective against invasive plants according to a new study that used data from the world's largest survey of wildlife based on camera traps. The survey also found that smaller animals can have a similar effect. sciencedaily.com

Accelerometers That Read Behavior of Wild Boars Can Detect When They Are Infected with A Fatal Virus
Behavioral sensors were used to detect when wild boars (Sus scrofa) were sick with African Swine Fever, a fatal viral disease that affects both boar and domestic pigs. Although not fatal to humans, this virus has a significant social and economic impact. phys.org

Environmental DNA Breakthrough Detects Genetic Diversity of Invasive Fish
Ecologists demonstrated that their methodology was successful in field sampling environmental DNA of invasive round goby fish (Neogobius melanostomus) throughout from the Great Lakes and the New York Finger Lakes. phys.org

2 New Invasive Insects Confirmed in Minnesota, State Department of Agriculture Says
Two invasive insects, the elm seed bug (Arocatus melanocephalus) and Asiatic garden beetle (Maladera formosae), were reported in Minnesota for the first time.twincities.com

New Invasive Insect Detected in Ohio Feeding on Elm Trees
The invasive elm zigzag sawfly ( Aproceros leucopoda) was spread to Ohio. There are reports of elm tree infestations in multiple Ohio counties, as well as five other eastern states. wlwt.com

‘We Knew This Day Would Come’: One of World’s Most Invasive Species Reaches Europe
The red imported fire ant (Solionopsis invicta) has spread to Europe. Researchers are not sure how or when they got there but they are worried the ants will spread quickly. cnn.com

Invaders of Texas workshops train volunteers to detect and report invasive species as citizen scientists. Workshops, which are free, are designed to introduce participants to invasive species and the problems they cause, cover aspects of invasive species management, teach identification of local invasive plants, and train participants to report invasive plants using the TX Invaders mobile application. The workshop is 7 hours long (usually on a Saturday, but scheduling is arranged with each individual host group). The workshop satisfies Master Naturalist training requirements.

Sentinel Pest Network workshops serve to increase the awareness and early detection of a set of particularly important invasive species to help prevent their spread into Texas or their further spread within Texas. Participants learn to identify species such as the Emerald Ash Borer, Cactus Moth, Asian Longhorned Beetle, and other pests of regulatory significance, and to report them. The workshop is 3.5 hours long. The workshop satisfies Master Naturalist training requirements.

Yellow-legged hornets (YLH, Vespa velutina) have been found in Southern Georgia, the first time they have ever been reported in the U.S. During a collaborative monitoring effort involving state and government organizations, two living hornet specimens were collected. These specimens are believed to be from one or more nests that have not yet been found, but the search efforts are underway.

YLH are native to Southeast Asia and are known to be very aggressive toward honeybees, launching dive bomb attacks as bees leave their hive. This behavior has earned them the nickname ‘bee hawks.’ These hornets are typically smaller in size than native Georgia species, as they range from 1.2-3.0 cm (0.5-1.0 inch). They are best identified by the distinctive yellow tips at the end of their legs. They have a broad orange-yellow face with large prominent eyes. However, the head and body coloration can vary and may require a specialist for final identification. These hornets are categorized as a social wasp species that constructs egg-shaped paper nests in trees. These nests can be large, hosting as many as 6,000 workers.

It is believed the YLH were most likely accidently introduced to Georgia via a shipping container from the Port of Savannah, as it is one of the county’s busiest ports and the live specimens were collected on a property outside of Savannah. These invasive hornets attack and feed on a variety of insects, including bees, but their favorite food is fish. The Georgia Department of Agriculture and the USDA plan to put out feeding stations that will be monitored so that YLH can be tracked back to the nest(s) until they are all found and eradicated. This invasive species has the potential to put many pollinators and crops at risk if stable populations become established. The YLH has already spread to Europe, the Middle East, and parts of Asia where it is influencing the agricultural industry.

Read the Georgia Press Release.

Many of us have seen first-hand how nature can be fierce, but if anyone has ever seen two ant colonies fighting over territory or resources, ‘fierce’ is not quite the right word for it. To literally compete to survive is unquestionably the most natural instinct for most organisms, next to reproduction.

A group of researchers have recently compared real-world examples of ‘ant battles’ to those of virtual gaming arenas using mathematical models from a virtual gaming simulation which allowed researchers to illustrate how battleground dynamics would illustrate ‘warfare’ outcomes. These concepts were then compared to real-world observations of Australian meat ants (Iridomyrmex purpureus), a native species that occurs in the research area, and smaller Argentine ants (Linepithema humile), an invasive known to many different places, including Texas.

Results of the study revealed, in both the virtual and real-life comparison, that when small armies of Australian meat ants come face to face with large armies of Argentine ants the mortality rate was lower in complex arenas, compared to simple arenas. Simple arenas likely had a higher mortality rate because Argentine ants can easily outnumber native ant species which becomes overwhelming in a small arena. Based on size alone, Australian ants easily beat Argentine ants in a one-on one. Battlefield complexity can tip the scales one way or the other, but there is much research left to do.

Read the research Lymbery et al.,2023

The recent fire in Maui was devastating and the cause is still under some debate. However, fields of untended non-native grass is believed to have contributed to the fast spread and wide destruction. Guineagrass (Urochloa maxima) is a common invasive field grass found on the island. It forms dense stands in open pastures and disturbed areas and can easily displace native vegetation. It is very drought resistant, meaning it can build up a dangerous amount of plant material, so when a fire occurs, the flames spread quickly and easily through the thick grass stands. Guineagrass is also fire-tolerant and can dominate ground area cleared by fire.

Hawaii is not the only place at risk to guinea grass and it is not the only place to has experience a fire in a grass-dominant landscape. Guineagrass has been reported in Arizona, California, Florida, Georgia, Louisiana, and Texas. Non-native grasses, such as this one, can help wildfire spread faster and farther. Due to this, Texas researchers are motivated to figure out what makes guineagrass thrive and what can be done to control the spread. One group of researchers hopes to find African gall midges, a type of flys that can be introduced as a biocontrol, targeted to eat or attack the guineagrass and leave the native grass alone. The study has so far found seven species, of which they believe some have true potential. However, biocontrol studies take time, and this research likely has another several years to go before any one biocontrol will have permission for official field studies. But hope is a wonderful thing and science is full of endless discovery. Read the article.

**Well wishes to any of those who lost loved ones or homes in the Maui fires, or any wildfires to date.

Citrus In Your Backyard!

The Asian citrus psyllid (Diaphorina citri) and the Citrus Greening pathogen (Candidatus liberibacter asiaticus) are threatening citrus in multiple Texas counties, and we need your help to collect samples to monitor the spread to ensure that you and your neighbors are not affected. This pest and pathogen are extremely detrimental to Texas citrus, both economically and agriculturally. The presence of either can greatly affect citrus yield.

TISI is offering FREE diagnostic services! If you suspect your citrus has either the psyllid pest or the Citrus Greening pathogen, or you would like your citrus plants to be part of our screening survey, contact invasives@shsu.edu.

We will send you all the instructions you will need. If you are located within 200 miles of our headquarters, we can collect samples, and/or provide traps and monitoring services ourselves. Not only will we share the results and management strategies (where applicable), but you will become part of a multi-county monitoring survey that is striving to improve the health of Texas citrus!

Also Available: TISI offers educational workshops that highlight information about the Asian citrus psyllid, the pathogen Citrus Greening, and what you need to look out for in your own backyard. If you are interested in this, TISI will provide trapping materials, assist with management strategies, and more. Don’t waste another second. Help us stop the spread!

Another Australian spotted jellyfish (Phyllorhiza punctata), also known as white-spotted jellyfish, washed up on North Beach, Corpus Christi, TX, early July. These jellies have become invasive in the Gulf of Mexico in great number over recent years. They were first reported in Galveston, TX, in 2006. Spotted jellies can grow to reach 20 inches in diameter and travel in large groups. They compete with fish and shrimp for food as they consume large quantities of zooplankton and larval fish. A single spotted jellyfish can clear 50 cubic meters of plankton filled water in one day, greatly altering the water column and local wildlife. Read Press Release

The Texas Parks and Wildlife Department has recently found Zebra mussels (Dreissena polymorpha) veligers in the International Amistad Reservoir in the Rio Grande basin along the Texas-Mexico border near Del Rio. Veligers are the final larval stage of certain mollusks. Quagga mussel (D. bugensis) larva were detected in multiple places throughout Lake Amistad early last year. Due to these results, the lake has been designated “positive” for both zebra and quagga mussels. Positive status indicates invasive mussel larvae have been repeatedly detected, but no juveniles or adults have been found and there is not yet evidence of an established population. Past quagga press release.

Quagga mussels are closely related to zebra mussels and cause many of the same problems, which are present in well over 30 lakes across Texas. Although within Texas, quagga mussels are only currently present in Lake Amistad, they are present in other areas of the US, so there is a risk that boats can transport them to other Texas lakes. Quagga mussels can develop larger populations and infest deeper lakes. As seen in Lake Amistad, a waterbody infested with one invasive mussel is still susceptible to infestation by another. The department emphasized the importance of continued help from boaters, marina operators, and others to Clean, Drain and Dry all boats and water craft equipment before moving them, and remain vigilant to stop the spread of aquatic hitchhikers.

Anyone who spots quagga or zebra mussels should immediately Report It!.

This program is designed to provide the education needed for professionals and students who are managing or learning to manage invasive species. The courses include the most current invasive species identification, control, and management techniques, and how to comply with local and federal regulations.

Participants may register and enroll at any time, and will receive a certificate of invasive species management from NAISMA upon completion of the program.

All live webinars are open to the public. Recorded webinars are available to members of NAISMA.

NAISMA 2020 Webinar Schedule:

• September 20, 1pm CDT- Reviewing the Impacts of Climate Change on Biological Control Agents. REGISTER.
• October 4, 1pm CDT- Utilizing Invasive Plants as a Medium for Conservation Artwork. REGISTER.
• November 15, 1pm CDT- Decades-Long Partnership Successfully Eradicates Destructive Nutria Rodents from Maryland. REGISTER.

Emerald ash borer (EAB, Agrilus planipennis) has recently been detected in Cooke County, TX. Several adult beetles were collected in the county in an EAB trap that is part of a state monitoring program run each year. EAB is also classified as an infestation in the following Texas Counties: Bowie, Cass, Dallas, Denton, Harrison, Marion, Morris, Parker, Rusk, Tarrant, Titus, and Wise. The EAB was first detected in 2016, in Harrison County, TX, and was found through trapping efforts in Cass and Marion Counties the following year, with all 3 counties upgraded to infested level by 2018. By 2020, Bowie County was also added to the list of infested Northeastern Texas Counties. While EAB was spreading in northeast Texas, it jumped to Tarrant County with the first confirmed report in 2018, posted by a young student through iNaturalist. Since its initial sighting in Tarrant County, the beetles were subsequently found in Denton County, May 2020. The infestation has caused millions of dollars of damage to ash trees annually, and is present in 35 states.

The emerald ash borer is a metallic emerald-green beetle with iridescence that creates an almost brassy to coppery or reddish reflection. The adult beetle is bullet shaped (10-13 mm) and has a characteristically bright red to purple coloration on its abdominal surface under its wings (elytra). One external sign of EAB infestation is the distinctive D-shaped hole adult EABs leave in the trees upon emergence. The larvae are white, and slightly flattened, with a pair of brown pincher-like appendages on the last abdominal segment. The larvae (1.5 in) feed on the phloem and outer sapwood of ash trees, leaving S-shaped galleries that cut off the circulation of the phloem to the tree, resulting in tree death.

If you believe you have seen an emerald ash borer, please take a picture and REPORT IT!

Invasive Spotlight:

Chili Thrip
(Scriptothrips dorsalis)

Chili thrips (Scirtothrips dorsalis) are very small, approximately 1 mm in length, about half the size of most other flower thrips. The adults are pale yellow with dark wings and dark bands across the abdomen. Thrips, from the order Thysanoptera, are so small they are often overlooked and can be very difficult to identify at any life stage without a microscope. Thrips pupal and larval forms are very typical looking compared to other insects when they are at these life stages and require an authority for proper identification. The entire lifecycle is complete within 14-20 days. A single female is capable of laying upwards of 60-200 eggs, which only take 6-8 days to hatch.

These thrips have more than 100 recorded hosts, some of which include strawberries, tea, citrus, cotton, soybeans, chilies, castor beans, peanuts, and roses. Unlike other flower thrips who prefer to feed on pollen, chili thrips are polyphagous, meaning they feed on many kinds of food. They have piercing and sucking mouthparts. Chili thrips feed by extracting contents of individual epidermal cells, which leads to tissue necrosis and discoloration. Feeding scars, distortions of leaves, and discolorations on young leaves, buds, and fruits are common due to this feeding behavior. A very severe infestation can result in complete crop loss.

These thrips have been intercepted at the port many times over the decades. Infestations have been reported in Florida and southeastern Texas. Biocontrol agents are known and reported to be effective. For additional information about chili thrips and management information, see the Texas Invasive species info page. If you believe you have identified a suspected chili thrips, please email the location information, along with an image, to invasives@shsu.edu.

Get Involved Today!!

The Texas Invasive Species Institute (TISI) and The Texas Research Institute for Environmental Studies (TRIES) have many surveys and projects underway. These facilities strive to provide yearly invasive species presence and absence data to the authorities. Pre-screening is one of the first lines of defense in the war against invasives. However, sometimes it is hard to do it alone.

With the aid of the public and citizen scientists, we could cover a much wider area, and gather a more substantial amount of data. When it comes to protecting our environment, there is an opportunity for everyone! Together we can make a difference, one research project at a time.

See how you can get involved by reading the projects listed below or see all the available projects on the Texas Invasives website HERE.

Aquarium Watch: Looking for Prohibited Invasive Aquatic Species

Please help texasinvasives.org and natural habitats by looking for 14 prohibited or invasive aquatic species that might be for sale in your local aquarium store(s). With just one photo you can assist us in finding and documenting which stores are selling prohibited or invasive species. Texasinvasives.org will use this information to contact the appropriate Texas institutions to ensure the appropriate steps are taken for each case.

If you would like more information please email invasives@shsu.edu, and mention you want to assist with our Aquarium Watch.

As a new segment, we are shinning the spotlight on some amazing videos about invasive species and the people that choose to work with them. There are some amazing citizens and professionals around the world that pock, prod, chase, dive, and investigate everything they can about these alien invaders. We all have the same goal, learn as much as we can to restore ecosystems and preserve our native species.

Zebra Mussel Facts: more than an INVASIVE species. Animal Fact Files.
This short video summarizes the main facts about zebra mussels without any preaching. Learn the basic benefits, biology, and morphology before they were so hated.

Why Should I Care? Invasive Species: Plants
Walk through the woods with an authority on plants and wildlife as he points out non-native invasive plant species that are growing right before your eyes. He shows natural examples of what simple invasives can do on even a small scale and why these issues are important.

Why Invasive Tadpoles Turned Cannibal | SciShow News
Cane toads are invasive to Australia and in their non-native habitat some cane toad tadpoles are known to cannibalism each other. This behavior is not seen in their native range. Why is that?

These Giant Rats Once Took Over a Fort Worth Park. Are They Still a Problem in Texas?
Nutria (Myocastor coypus) can be found throughout the eastern two-thirds of Texas around aquatic habitats, but the authorities believe their populations are on the rise. ca.finance.yahoo.com

Texas A&M Overton Plant Expert Discusses Invasive Kudzu
Kudzu (Pueraria montana var. lobata) can be seen growing up power poles and native vegetation along the roadside of east Texas. Listen to an expert talk about how it got to Texas and what we know about the fast-climbing plant. kltv.com

Study Reveals Successful Strategies for Removing Invasive Caimans from Florida Everglades
The spectacled caiman (Caiman crocodilus) is an invasive species introduced to the everglades that poses a threat to the native wildlife. Response and removal efforts reveal optimistic results. sciencedaily.com

Biodiversity Protects Against Invasions of Non-Native Tree Species, Study Finds
Studies suggest that proximity to humans, especially maritime ports, drive the likelihood of invasions. However, biodiversity can help to buffer the intensity of invasive spread. phys.org

‘FRANKENFISH’: Invasive Fish That Can Survive Out of Water for Days, Caught in Missouri
Northern snakeheads (Channa argus) were caught in southeastern Missouri for the first time in four years. These fish can cause damage to water beds and have been known to bite humans who approach a guarded nest. myparistexas.com

Q&A: Researchers Track New Invasive Insect, The Elm Zigzag Sawfly
The elm zigzag sawfly (Aproceros leucopoda) was first detected in the U.S. in 2021, and Canada in 2020. Since its accidental introduction, it has spread to five east coast U.S. states. phys.org

Japanese Beetles Could Spread Throughout Washington State In 20 Years
Japanese beetles (Popillia japonica) have spread across much of the U.S. and a recent study suggests without intervention this spread could continue. Quarantines and intense efforts could be the solution. phys.org

Research Identifies Moths That Slow the Spread of Invasive Fern
The old invasive climbing fern (Lygodium microphyllum) is spreading across southern and central Florida. Researchers that have been looking for a solution to slow the fern’s spread may have found a biocontrol. phys.org

Brown Widow Spiders: Invasive Species Prosper in Favorable Habitats and From a Lack of Local Predators
Research suggests lower levels of parasitism and predation in urban habitats may contribute to the invasive success of brown widow spiders (Latrodectus geometricus), especially when compared to desert white widow spiders (L. pallidus). scienecedaily.com

Invasive Firestarter: How Non-Native Grasses Turned Hawaii into A Tinderbox
Invasive grasses can be very “ignitable,” more resilient to fire compared to native species, and can replace native species that were wiped out during the blaze. phys.org

Invaders of Texas workshops train volunteers to detect and report invasive species as citizen scientists. Workshops, which are free, are designed to introduce participants to invasive species and the problems they cause, cover aspects of invasive species management, teach identification of local invasive plants, and train participants to report invasive plants using the TX Invaders mobile application. The workshop is 7 hours long (usually on a Saturday, but scheduling is arranged with each individual host group). The workshop satisfies Master Naturalist training requirements.

Sentinel Pest Network workshops serve to increase the awareness and early detection of a set of particularly important invasive species to help prevent their spread into Texas or their further spread within Texas. Participants learn to identify species such as the Emerald Ash Borer, Cactus Moth, Asian Longhorned Beetle, and other pests of regulatory significance, and to report them. The workshop is 3.5 hours long. The workshop satisfies Master Naturalist training requirements.