Lynda or Skillshare, which is better for your wallet and for your life?
There are only so many classes most will want to take at the going rate for an American education. California, thankfully, has a policy which keeps those earning an above average GPA in school for free. You must pay for your own books, which can sometimes cost as much as the class itself. Some teachers are kind enough to not have a textbook requirement – this helps them to fill their classes quickly but you can only imagine how much extra work they must put in to teach the curriculum according to the the accreditation standards.
In the State of California, education and healthcare is nearly universal.You must submit information to Covered California or take a nice cut on your tax returns for not doing so. I appreciate my school, the art department I’m in has been nothing but helpful and supportive, but there are other more affordable ways to learn the techniques that supposedly would have cost me $10 k a semester had it not been for said GPA and a long residency on the dean’s list.
Lynda or Skillshare, these websites are filled with fun classes teaching everything from computer science and robotics to painting and SEO. If I was to pick one, I’d say skillshare.com is the affordable choice. They are not owned by LinkedIn and the monthly cost is minimal. Where Lynda is a hefty $400 annually, skill share is $99. Plus, with skillshare, you have access to every single piece of tutorial you can get your hands on. If you changed your mind tomorrow and decided Python programming was better for you than screenprinting t-shirts, then you would have every right to start your new path quickly and effortlessly. With Lynda, the saving grace is that if you attend UCSD (The University of California-San Diego)you could access the website for free. However, Mesa (my school) doesn’t have a Lynda account – but we have other awesome free perks for attending and probably the greatest benefit is the amount of tutors we are allowed to see any time. In fact, we are an international language school, you can learn Chinese, Japanese, French, Spanish, and at one point Tagalog from tutors if you happen to walk into the Learning Resource Center which is usually open from 6 am to 10 pm. Whatever the case, education is easy to come by – the practice and the willingness to seek what you’re interested in learning is on you.
Recently, I’ve become interested in using eco dying techniques for fiber art. I know the power of the stomach lining all the way to the esophagus, it’s easily found if you’ve ever had a bout of heart burn. However, coca cola and soy milk are some additional solvents to use in said, techniques and that’s when a red flag comes up.
Since I was child I kicked the habit of drinking soda. Children tend to gossip about all types of things but one instance of overhearing that coca cola can clean rust and drive worms from red meat was enough to make me put the can down. Soy milk is used in eco dying as a cleaning process for cotton fabric to help color to fasten on. Kind of interesting but it brings up this great curiosity and concern. If the gut is the gateway to good health, we must certainly be on alert as to the chemicals and substances we allow in it. Not so much that you can’t enjoy a meal but so much that you wouldn’t allow a drink to sit in your stomach for long that could clean a rusted old metal lock by the morning after dinner.
Malaria infects some 247 million people worldwide each year, and kills nearly one million. Mosquitoes cause a huge further medical and financial burden by spreading yellow fever, dengue fever, Japanese encephalitis, Rift Valley fever, Chikungunya virus and West Nile virus. - Janet Fang’s Ecology: A world without mosquitoes
Remember this guy? No matter how many times he tried to catch the roadrunner with his technologies and ‘wit’ the roadrunner prevailed and poor Wiley E. Coyote went home hurt. I don’t remember the roadrunner ever committing an act of violence against the Coyote but the Coyote certainly did a number to himself. Humans do this same thing with nature.
For instance, our fight against the mosquito has led putting DEET, N -Diethyl-meta-tuluamide, a common active ingredient in insect repellent on our skin and clothes. DEET was originally used by the United States military in jungle warfare. DEET was later found to be a cause of seizures as it could possibly inhibit central nervous system enzyme activity. Thankfully some people have returned to using old holistic methods to prevent mosquito and other insect bites. In general, I hope we slow down before we hurt ourselves.
It is true mosquitoes cause harm to human beings. Mosquitoes are known to be the most dangerous animal in the world for its ability to spread viral and parasitic disease. As highlighted in several research studies the mosquito is one of the reasons early colonization of the Americas was not possible. Several populations of would be colonizers in the thousands stepped off boats from Europe but only small numbers in the tens survived because the would be colonizers came in contact with mosquitoes carrying diseases they were new to such as malaria. Sadly for this same reason, slavery became a major institution as Africans were not new to malaria and could survive in areas where malaria spreading mosquitoes existed.
Day after day many of the 3500 species under the name mosquito meet in the same place to perform mating rituals. The males live for a week while the female’s life span is one to two weeks in the wild or several months dependent on ambient temperatures, predators, and habitat controls. In extremely cold climates, mosquitoes spend part of the year in diapause. This means until thawed their life is in suspension. Out of the 3500 known species, only a couple hundred are known to spread harmful diseases or even digest blood.
There is a scientific and societal debate as to whether the mosquito is a necessary species. Many are confused as to their purpose. Will the fly family clan be missed if no longer living? As of recent years, mosquitoes have been genetically modified to stop their spread of malaria and dengue fever and in some countries, genetic modification has inhibited their ability to reproduce. I wonder if anyone asks if we are overstepping our importance by taking a creature we consider a nuisance and trying to wipe them out.
A few more facts about mosquitoes is that their larva is aquatic and standing water is a breeding ground beside fresh and salt water bodies. Due to increased rainfall brought about by climate change, there could be an increase in populations. Mosquitoes are attracted in some cases primarily to the following people; heavy breathers, those who produce a lot of body heat, the pregnant, and especially those of the O blood type. It’s argued the spread of mosquitoes is caused by the destruction of their habitat due to deforestation. Studies suggest the cause of large dengue fever outbreaks is recent deforestation. Most of the land near what was considered colonies of the new world was swamplands and forests.
What do you think of the survival of the mosquito?
In ancient Sedan streptococcus mutans (tooth decay) may have existed only minimally due to a diet of Cyperus rotundus. Used to regulate chi in ancient China, treat digestive system disorders in ancient India, and dress wounds in the Levant, Cyperus Rotundus, a widespread plant species of Cyperaceae is today considered a nuisance weed.
The plant’s tubers provide nutritional benefits to migrating birds. On the island of Kauai, nut weed, as it is known here, is also known to treat the feminine reproductive system. It is resilient. Spraying it with most herbicides only kill it’s leaves.Hoeing it only aid it’s quick regrowth, like Hydra, if you cut it without taking it’s tubers it will spring forth and spread.
Most weeds, or shall I say 70 to 90% of the weeds of Earth are edible. Many farmers and gardeners try to either pull the weeds out or spray them, sometimes with chemicals which cause a trickle down effect of hazard to not only the land but the water supply and it’s creatures.
Such sprays could be detrimental for humans and land for years, decades, and generations.
A Short for Nepenthes, a Carnivorous Plant of Borneo
The lone spotted mother flew drunk and heavy several meters to lay her babies down. Burdens who could eventually be called her children in only a few days time. She found a home for them in the mouth of a fanged pitcher plant known not to exhibit carnivorous longings and staunch acidic fluids. Away she flew to her remaining moments, her flight pattern bouncy as the other critters only lit by certain twilight and phases of the rising moon. Maybe she thought her little ones would act as parasitic creatures, awakening to feed on the visitors of their host. Maybe she thought them to have as much time as she did to meet a swarm and find a place to lay their progeny. But they never did.
On one monitoring occasion, he, an ant, noticed them bobbing in the mouth of the flower. Gradually skidding across the waters he grabbed the larvae with his legs. He swam backward pulling them with him and out of the plant where they died. The ant colonizers fed like this daily. In return for their certain meals with drinks of nectar, the ants gave their dead, feces, and urine to sustain she who is Nepenthes Bicalcarata. She will never need to become carnivorous, she will never need to lose energy becoming elastic like, and she will never need to produce acidic fluids for her meals will be like the meals of the ants who mutually support her; certain, timely, and appreciated.
Ants have proven themselves to maintain mutual relationships with various trees and plant species. Where ever I sit at the root of a tree here in Sabah plenty come to my feet and march up and down the trunk of the tree. It’s not necessarily a sweet ending when you find that this action from the ants only allow insects to easily slip into the mouth of its host pitcher plant, but the ants wipe the mouth of their host and spring to action hunting any that would harm her by a takeover.
The fishermen put flammable ingredients into a bottle and chucked them into the water. When it exploded the stunned fish’s swim bladders ruptured, the loss of buoyancy caused a small number of fish to float to the surface while a good deal sank to the sea floor. The fish targeted were not the only ones who suffered. Other marine life nearby, the waters, and coral reefs were affected by what is known as blast fishing.
South East Asia, home of the Coral Triangle A.K.A the Amazon of the Seas, is the number one region depending on Coral Reefs as a means for food supply. Blast fishing has caused a lot of the beautiful habitats, which 25% of marine life depend on, to become either fragmented or outright damaged. 25% percent of known marine life depends on Coral Reefs, which make up 1% of the Earths surface.
I want to bring attention to two solutionary programs helping to recreate a healthy Coral Environment for the fish and Marine life of this great region of beautiful biodiversity. First an interview with Scott Maybach, a local marine biologist planting seeded Coral. Next, highlighting a passive acoustic technology (PAM) coupled with an app that alerts Marine Park Rangers of fish bombing activities and pinpoints the exact location of the activity to immediately respond and address perpetrations.
Coral Reef seeding or Reef Planting reintroduces live coral to fragmented or damaged coral sights.
FWS: To give us an overview of who you are and what you do, I ask what is your background? What brought you to the works you do today?
Scott: I am a marine biologist working for an island resort. Basically helping to protect and monitor the reefs as well as foster sustainable use of the reefs for tourism. I founded a marine and turtle rescue center funded by ytlhotels.
FWS: Large percentages of fish and other marine life depend on coral reefs and live near coastal regions. Can you expound to drive it home for us why these places are of utmost importance to the food web and it’s supporting environment?
Scott: About 25 percent of all fish depend on reefs for food and shelter at some stage in their life cycle. Its importance lies in that the majority if people in these regions depend on reefs as their primary food source.
FWS: What is the number one cause of coral reef destruction? Can this be remediated?
Scott: Habitat degradation, due to coastal development through water pollution and sedimentation, can lead to dead zones.
FWS: What is Coral seeding? Can Coral Seeding have long-term benefits for marine life and can these benefits persist despite climate change?
Scott: Coral planting is reintroducing live corals to a dead or damaged reef that can have long-term benefits; re climate change is yet to be seen.
FWS: How does climate change affect coral reefs? I’ve learned some coral reefs have it in their DNA to protect themselves against rising and high temperatures like 97°, is there a notice in the science communities of coral reef bodies shifting with weather patterns and uncertainties?
Scott: Increase temp can lead to coral bleaching and death. If climate change is gradual they can shift but also yet to be seen.
FWS: Do coral reefs differ based on regions and the animals that depend on them?
Scott: Reefs differ based on environmental factors;
A. There are fringing reefs, which are near land and follow the shoreline.
B. Barrier reefs, that is offshore usually near big drop offs.
C. and Atolls, which are isolated islands built entirely of coral of thousands of years with a lagoon in the center.
Coral types will vary by biotope, with light, current, and water quality defining what corals become dominant.
FWS: What can we do as a people to protect coral reefs and acknowledge their importance?
Scott: Try and avoid buying reef fish for food, and home aquariums.
FWS: Can artificial reefs assist in stabilizing marine life populations that depend on coral reefs in the long term?
Scott: Yes by providing a habitat for fish and corals.
FWS: With artificial reefs are there artificial caves since natural reefs and caves support marine life and each other?
Scott: Depending on the artificial reef type, they will have caves of various sizes the largest of which are shipwrecks.
For well over 50 years the Tun Sakaran Marine Park in Sabah, Malaysia has experienced fish bombing. A devastating practice which could not only harm the fishermen’s physical health and other fishermen’s economic well being but damage coral reefs and affect the lives of many marine animals in the process. Recently, using a passive acoustic monitoring (PAM) device fish bombing in the area can be detected in real time and immediately brought to the attention of park rangers using their mobile phones. The technology system will act as a tracking measure. The hope of the program is to eliminate the practice of fish bombing in the Marine Park and stop perpetrators in their tracks. This project is managed by the Marine Conservation Society and is funded by the Save Our Seas Foundation.
Thanks to Scott Maybach and Elizabeth Wood, Program Lead for the Eliminating Fish Bombing project for information in support of this post.
For more information on the Save Our Seas program:
Only one at a time. She had me first. In the beginning, there was only mothers milk until I heard something innate and primal awakening me to my relationship with trees. I could hear their call from a deep place called instinct. Like a man eating something holy to him without his molars, I take their fruits to my nest and eat only what fills me. Spit, seeds, and pulp falls to the ground and becomes a new tree. It’s mutual they feed me I feed her. Being fruitful, literally, helping them to multiply.
There is a multitude at my disposal when twilight comes. Suddenly, napping and grooming turns to hunting and stalking prey. I catch the tail end of the sunset the birds go in we go out. What will end up in my claws could it be moths you can’t get rid of, mosquitoes you clamor to run from, could it be fruits whose seeds want out? It all depends on whom you’re watching. I’ve known cousins who feed on blood, small mammals, and fish from lakes, rivers, and streams. Biting as they do large palm leaves creating tents with their teeth.
My specialty is not my sight it’s in my hearing, it’s in my olfactory senses. I send a sound so profound it bounces off the belly of my prey so I come grabbing them in mid-air wrapping them in a pocket of my wing taking them back to my place.
Glad to be here. My mother waited for the appropriate time. When the insects would be plentiful when the rain would not be a hindrance to my search for food. Legend tells my father implanted her long before she decided to give birth to me. Gave me time to know how to harvest what comes after the winter and rainy seasons so that I may relax in hibernation and remember what to look for when spring comes a calling.
Did you know Lion is my distant cousin? Some of us if you stand close enough look like miniature foxes wrapped in sheaths of wings.
Now threats such as wind turbines disturb our kind on distant lands. Millions have died already from white fungus a disease that disturbs hibernating bats and makes them exhausted to death in America. You need us! Plants need us! Sure enough, we are the second largest group of mammals on the planet. But we earn our keep. We do our best. 70% of our food is insects you call pests. You can’t imagine the world that exists without us. They call me a bat.
It’s June on the island of Kauai. I have come to my door a many times at night to find that I do not scream nor run when I see a cane spider. Two years ago I would have booked it. It’s their eyes, their walk, and more than likely that darn discovery channel I watched so often growing up. What was once a phobia has turned into an all out interest. I have stood only inches away from spider webs with my camera at the ready. I have caught a few cane spiders in a jar to release them from my room with in the past few weeks. I went towards it not away from it.
There are some amazing endimic species here on the island. Cave spiders who have literally evolved themselves to have no eyes and no pigment, such pleomorphism is to make certain the creature’s energy will be saved and spent on necessities needed for the environment it lives in. Eyes and pigment, I am sure,have no use in constant complete and total darkness.
Cane spiders (Heteropoda Venatoria) who do not make webs and come out at night to catch their prey of insects aren’t endemic but introduced. Some people would love to have this spider in their home to help control pests. This spider is known to prey on bats and scorpions too.
Then there is the beautiful garden spider ( Argiope Appensa) it’s been in the kitchen for weeks and no one has touched it. I actually prepare and eat my food below it since it’s web is on the ceiling above the juicer. The spider has golden spots and isn’t poisonous. It works daily on it’s nest especially in the dark or the early early morning when I turn on the light it’s on another part of it’s web reweaving. Before leaving California I sent an email to Shehan Derkarabetian, a graduate student of professor Marshal Hedin in the Department of Biology at San Diego State University to find out more about harvestmen.
We know daddy long legs as spiders but in truth they aren’t they are harvestmen. Harvestmen, unlike spiders, are known to not be poisonous to humans nor animals (except some invertebrates whom they eat) and only have one pair of eyes. Also harvestmen have sex organs and have intercourse to produce their offspring. They are such a mystery with so many species yet to be known. Shehan Derkarabetian was kind to answer in detail. Pictures are from Marshal Hedin. Enjoy!
Tell me what is a harvestmen and how do they differ from spiders?
The scientific name for harvestmen is Opiliones, but they are also commonly called or harvestmen or daddy-longlegs. Harvestmen are an order of arachnids. The most familiar arachnids are are spiders, mites and scorpions. However, there are quite a few less well-known groups, including harvestmen. Like all arachnids, harvestmen have eight pairs of legs. Many people will mistakenly refer to harvestmen as spiders, but these two groups are completely different. While spiders have up to eight eyes, two separate body parts, fangs that can inject venom, and glands capable of producing silk, harvestmen only have two eyes, fused body parts, do not possess fangs or venom, and cannot produce silk. The common name of harvestmen may have come from early observations that certain species would become really abundant during the harvest season.
The most commonly encountered harvestmen are the long-legged harvestmen. Here, a Leiobunum harvestmen has captured a fly as prey.
How many species of harvestmen are known in the world as of 2015?
There are currently over 6,500 species of harvestmen described, with new species being described every year. In 2014, myself and other researchers in our laboratory at San Diego State University described a total of 11 new species from the western United States, including California. You don’t have to travel to remote rainforest jungles to find new species; they are waiting to be discovered in our own backyard!
Spiders are said to have a few pairs of eyes, harvestmen have one, can they form visual pictures?
Based on the few species that have been studied so far, it is unlikely that they can form visual pictures, butmost can see changes from light to dark. Experiments have suggested that visual signal is of little importance to harvestmen when waiting for food, suggesting that they use their other senses to detect prey and sense their environment.
What do harvestmen eat?
Looking at the group as a whole, harvestmen are omnivorous and can eat almost anything, from rotting debris to living insects. The majority of harvestmen are predators of livinginvertebrates like slugs, worms, springtails, beetles, flies, spiders, mites, and even other harvestmen. However, some have been known to scavenge dead insects and plants, and even eat larger things like wasps and small frogs. Most harvestmen are sit-and-wait predators, sitting motionless and waiting for potential prey to come near. There are several species that are to known to eat fungus and fruit. Interestingly, there are some species that are gastropod (snails and slugs) specialists. Their feeding appendages have evolved to be much longer and stronger so that they can tear open the shells of snails and pull them out to eat. Following their meal, the females will lay their eggs in the empty shells. There are some interesting methods that harvestmen have used to capture prey too. For example, some groups have modified pedipalps (second pair of appendages, in front of the legs) that secrete sticky fluids that cling to the tips of hairs. With these fluids the harvestmen can easily capture their prey with “glue”.Another group have their pedipalps modified to include many
spines that can be used to capture prey. In some species the spines are so well developed that it resembles a cage.
The genus Sabacon uses modified pedipalps with sticky fluids attached to the ends of hairs, which are used to catch prey.
What other senses does a harvestmen have to make up for its eyesight?
Harvestmen, like other arachnids and invertebrates, use other forms of reception to sense their environment. These include mechanoreception (for example, touch, sound, or pressure) and chemoreception (taste and smell). Harvestmen legs are covered with several particular types of sensory hairs that are specifically designed to help detect physical movement, either through direct contact or possibly from a distance, or chemical stimuli left in the environment. Most notably, the second pair of legs in harvestmen are adapted to function more like antennae for sensing than as a typical leg for walking. When a harvestmen is at rest, the second pair of legs are usually held in the air waving around, and as they are waking they are used to quickly prod the area in front of them.
Are there any known harvestmen species that pose a threat to humans and animals? Can you elaborate?
Other than perhaps tasting bad if you try to eat them, harvestmen do not pose any threat of any kind to humans or animals (other than the tiny invertebrates they eat). The common saying that daddy-longlegs are extremely poisonous but cannot bite is completely false! Harvestmen do not have venom or fangs.
What are the mating habits of harvestmen?
All harvestmen are typically sexually reproducing, meaning both males and females are involved in reproduction. Unlike some other arachnids that transfer sperm either through a secondary sexual organ (like spiders) or by leaving sperm packets for the female to pick up (like scorpions), harvestmen mate by direct transfer of the sperm from the male to the female via reproductive organs. The females have an ovipositor, used for sperm intake and egg laying, and the male has the equivalent of a penis. For some species there can be a pre-mating interaction (like courtship), where they will repeatedly touch each other. In some species, the males will present the female with “nuptial gifts” either before or during mating. There are a few species that are thought to be parthenogenetic, where the female produces offspring without the involvement of males fertilizing the eggs.
Is it true all harvestmen lay eggs? Including males?
All harvestmen species do lay eggs, however it is only the females that do so. Depending on the species, a female can lay anywhere from 1-200 eggs in a batch, sometimes laying multiple batches in a year. The female ovipositor, which possesses sensory hairs at the tip, is used to probe their habitat to find a suitable place with high humidity to lay the eggs. Eggs are typically laid in clumps in the soil or on some other substrate, and some species will cover the egg batches in mucus for extra protection. For most species, the female will lay the eggs and leave them to develop and hatch, which can take anywhere from 1-6 months.
How is it possible that harvestmen eggs can last up to half a year before hatching?
During development the eggs will absorb water from the air or through the mucus layer, if present. Like the eggs of other animals, harvestmen eggs contain all the nutrients it needs for the embryo to develop. The very little research done on harvestmen eggs shows that, like other animal eggs, they also contain a vitelline membrane and sometimes a chorion that functions as protective barrier and a nutrient source. Given that harvestmen eggs are generally well hidden and is a self-contained developmental structure, it is easy to believe they can last up to 6 months before hatching. In some species, diapause has been recorded. This is a process by which the embryo will temporarily pause development for a period of time due to changes in temperature. For example, eggs of the species Mitopusmorioare laid in the late summer and develop for a period of time. At a specific stage, development stops until cooler weather triggers the start of the next phase. The final phase of development only occurs when the temperature warms up again in the spring.
I once read harvestmen males are the caretaker of eggs, cleaning and guarding the brood, do the males only keep watch over their own eggs?
Yes, in some species the males do care for and guard the eggs, but not all harvestmen species do this. In some species, it is only the female that cares for the eggs, while in others both male and females care for the eggs. However, there are many species where neither parent will guard the eggs except for hiding or covering the eggs. Most of the time the female lays the eggs either in moss, crevices, or under rocks or logs and leaves them to hatch. In the case of paternal care, there are quite a few species, particularly in South America, where the male alone guards and cares for the eggs. For example, the males of the species Zygopachylusalbomarginis are well known for making open mud nests. Females of this species wander looking for males, who each have a mud nest. When a suitable male is found they will mate inside the nests, then the female will lay her eggs and leave. It is then up to male to care for the eggs, sometimes from multiple females, by cleaning them, cleaning the nest, and protecting them from predators.
What are some defense mechanisms of harvestmen to save itself from predation?
Harvestmen have many lines of defense against predators. One form of defense is called crypsis, where they have evolved to look very similar to their environment. Crypsis makes it difficult for predators to see the harvestmen’s body against the background on which they are resting. Some species even secrete a substance that acts as glue that will make dirt and debris stick to their body acting as a camouflage. Another form of defense is called thanatosis, meaning if a predator finds the harvestmen, the harvestmen will play dead and hope the predator loses interest. The most impressive form of defense harvestmen have is their chemical defense. They have a pair of openings on either side of the body called ozopores, which lead to chemical producing glands. When a harvestmen is threatened, they will secrete a cocktail of chemicals from these glands that smell and taste bad to any predators. For example, some species in the genus Sclerobunus secrete a chemical cocktail mostly made of nicotine.
The genus Ortholasmauses crypsis and thanatosis as a means of defense, often using dirt and debris to help camouflage.
If it is true harvestmen are omnivorous, has there ever been a case of harvestmen becoming an infestation?
As a whole group, harvestmen are omnivorous, although the vast majority primarily feed on smaller invertebrates. To my knowledge there has never been a report of a harvestmen infestation in the sense that some insects, like locusts, become an infestation.There are many species that are known to aggregate in massive clumps, sometimes reaching thousands of individuals (there are some pretty cool videos online). It’s possible they do this for defensive reasons (like increased amounts of chemical defense substances or an easier way of communicating alarm messages) oras a way to improve chances of finding the opposite sex for mating. Whatever the reason for the aggregations, they pose no threat to humans.
What is the autotomy practice of harvestmen?
This is another form of defense that harvestmen use where, if a predator has captured them and are holding onto a leg,the harvestman can separate that leg from their body. The leg will even continue to twitch for some time as a distraction while the harvestmen escapes. This is similar to what lizards and geckos do with their tail when caught by predators. However, in harvestmen, once they lose the leg, it does not regenerate.
In South America harvestmen are said to be endangered due to human activity, are you aware of any measures to protect the species?
Most harvestmen have limited dispersal abilities, meaning that, over their lifespan, they do not move very far. This has led to there being many harvestmen species with very small distributions, for example, a species may be entirely limited to a single cave, a single mountaintop, or a single patch of forest. Many harvestmen species throughout the world are endangered mostly due to the destruction of their habitat. South American rainforests are one of the most biodiverse regions for all types of animals, and harvestmen are no exception. There are some measures available to protect species in South America, for example there are several species of troglobitic(adapted to and found only in caves) harvestmen that are on the “Red List of Threatened Species” in Brazil. The vast majority of troglobitic harvestmen in South America, and throughout the world, can be considered threatened due to their very limited distribution, sometimes only a single cave, and their smaller population sizes. However, very few of these cave species are actually legally protected.
Are you aware of any action around the world to protect spider/harvestmen populations?
In the United States we have the Endangered Species Act, which allows for the protection and recovery of species that are threatened by extinction. As of now, only three harvestmen species are federally listed as endangered. These three species are all found in the genus Texella. All of these species are troglobitic, restricted only to single caves found in Texas, and are severely threatened due to habitat destruction and human development. There are quite a few harvestmen species that deserve to be legally listed as threatened, but are not.For example,some species in the genusMicrocinacan only be found under serpentine rocks in certain grassland or woodland habitats in central California.These species are often only known from one or two places and are severely threatened by development, so much so that some populations no longer exist. One species, Microcinaedgewoodensis (commonly called the Edgewood micro-blind harvestmen),received much attention when the planned development of a golf course threatened to destroy the only known habitat of this species in Edgewood Park near Redwood City, California. Luckily, and as a result of the danger to this species, the golf course was not built due to the threat it posed. However, this species is still at a very high risk of extinction due to its extremely limited range. Although a significant amount of attention has been paid to these species, revealing that they are only known from a few places and have small populations sizes, they do not have any official conservation status.Another example, in the genus I work on, Sclerobunus, there are several cave-adapted species that are only known from very few specimens and are presumed to be rare. The species Sclerobunus klomax is only known from three female specimens and so far has only been found within a rock-pile about 300 square feet in size.
Many of the most endangered harvestmen are cave endemics, including the genus Speleonychia, which is only known from a few lava tubes in southern Washington and has evolved a complete loss of eyes.
Can you please share the historical information of harvestmen such as, where are they most reported originating from and any possible evolutions documented?
Little is known about the early evolution of harvestmen. As a group, harvestmen have been around for quite a long time. There are numerous fossil harvestmen known, the oldest of which is around 400 million years old. Interestingly many of these fossils that are hundreds of millions of years old look remarkably similar to harvestmen that are alive today. Harvestmen are known from all continents, except Antarctica, and are the most abundant in the tropical regions of the world, like South America and Southeast Asia. There is much to be learned about the biology of harvestmen. Compared to most other groups of animals, there is little known and little research currently being conducted. Most importantly, there are many species of harvestmen that are unknown to science and still waiting to be discovered!
For more information, resources, and (of course) pictures of harvestmen, here are a few links to get started. There are also plenty of awesome harvestmen pictures on Flickr and videos on YouTube.
Forgiveness, tolerance, and all out watching and being vigilant without being in survival mode. Taking it easier. I wrote this poem about the inner parts that speak under the roof of one house. Ease to us all. Tolerance!
Internal Familiar Systems:
Kissing your light side
watching your dark
our dark parts want to make amends
I don’t want them two as friends
cause this is my girl
and he says this is my mens
mens denoting more than one within one
parts/scattered/ with all that inner chatter
what do I mean?
like he wants to be sweet
and he wants to be an ass
this one is OCD neat
and this one’s just an ass
so when we meet
my interpersonal connections and communications are on levels
can’t skirt it
the mammalian and reptilian say
This one’s alright and this is an aching civilian
the internal familiar system is watchin’
and I’m telling you, you will get tired of boxin’
thinking, maybe we just don’t get along
it’s much deeper than that
cause you got parts that are cool
and though you may hide it
another that just a brat
could live alone and be totally fine
then all of a sudden,
here comes your inner feline
and you know what cats do
don’t want to listen
but will need some food
(and a cuddle)
oh yeah that’s just about it
the internal familiar system
on the surface and much deeper than that
a whole inner kingdom and queendom speaking out of one mouth