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+ نوشته شده در  پنجشنبه هفتم مرداد 1389ساعت 12:56  توسط س.ح  | 

clown fish


What is a Clownfish?

The clownfish is a type of fish that lives in salt water habitats. It is also called an Anemonefish. Clownfish are typically very bright, orange fish that have three white stripes, one at the head, middle and tail. If you look really closely, you may notice that there are thin black lines around the white stripes. Also, the tips of their fins have a thin black rounded stripe.

Clownfish can grow to be from 2 to 5 inches long. The males tend to be significantly smaller than the females. However, there are various types of clownfish that range in colours from blue to yellow.

Clownfish live in a "symbiotic" relationship with certain anemones. This means they benefit from living with the sea anemone, and the sea anemone benefits from the presence of the clownfish. They are the only fish that are able to live in sea anemones and not get stung by their tentacles. Clownfish are very active fish and are extremely aggressive. Because they are quite active, the clownfish are thought to be "clowning around". They defend their territory and the sea anemone that they live in. Clownfish eat the leftovers from fish on the anemone and algae. The leftovers include copepods, isopods and zooplankton.

Clownfish have a few ocean predators, but their greatest threat is humans. People who catch clownfish and keep them as pets in aquariums are making a mistake. There are only ten out of more than one thousand types of anemone that are able to host these fish. Many people put the fish in a tank with the wrong anemone. In captivity, the clownfish can live from 3 to 5 years. In the wild, they live 6 to 10 years.

What is Symbiosis?

Symbiosis describes the special relationship between clownfish and sea anemones. They are the only fish that do not get stung by the tentacles of the sea anemone. Clownfish have a slimy mucus covering that protects them from the sea anemone. However, if this covering is wiped off of a clownfish, it will get stung and possibly be killed when it returns home to the anemone. The clownfish and the sea anemone help each other survive in the ocean. The clownfish, while being provided with food, cleans away fish and algae leftovers from the anemone. In addition, the sea anemones are given better water circulation because the clownfish fan their fins while swimming about. 

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Where do Clownfish Live?

Clownfish live at the bottom of the sea in sheltered reefs or in shallow lagoons, usually in pairs. Clownfish have a special relationship with the anemone and are very important to them. They are a large help to the anemone as they clean the anemone by eating the algae and other food leftovers on them. They also protect the sea anemones by chasing away polyp-eating fish, such as the butterfly fish.

The map below shows where in the world clownfish can be found. They live in the warmer waters of the Pacific Ocean and Indian Ocean. They are also found in northwest Australia, southeast Asia, Japan and the Indo-Malaysian region. There are no clownfish in the Caribbean. 

Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window

Map by L.B.


What is the Life Cycle of the Clownfish?

The spawning season of the clownfish, a time when they breed, is year round in tropical waters. Males attract the females by courting. Courting behaviours include chasing, biting and extending fins. Clownfish lay their eggs in batches on coral, rock or next to the sea anemone that they call home. The male clownfish will build a nest on the rock or coral near the anemone in order to be provided with protection from predators. Breeding starts by the male chasing the female to the nest where the eggs are released. One hundred to one thousand eggs are laid. The male clownfish guards and protects the eggs until they hatch. They hatch within 4 to 5 days.

What are Some Special Characteristics of the Clownfish?

In a group of clownfish, there is a strict hierarchy of dominance. The largest and most aggressive female is found at the top. Only two clownfish, a male and a female, in a group reproduce through external fertilization. The clownfish are hermaphrodites, meaning that they develop into males first, and when they mature, they become females. Also, as mentioned earlier, more than one clownfish is able to live in a sea anemone. If the female clownfish is removed from the group, such as by death, one of the largest and most dominant males would become a female. The rest of the remaining males will move up a rank on the hierarchy.

+ نوشته شده در  سه شنبه پنجم مرداد 1389ساعت 22:34  توسط س.ح  | 

clown fish

The clown fish are small in size, the smallest is 10 cm and largest is 18 cm long, and they don't believe in traveling too far, as compared to whales, dolphins or sharks, in search of whatever awaits in those places. The clown fish habitats can be found in the shallow waters, especially in the regions, where the water temperature is in range of 24 to 28 degree Centigrade, and the sloping sea bed boosts the growth of corals.

The shallow water allows the sunlight to reach the sea bed and thus promotes growth of the zooplankton, which are tiny animals. The presence of the zooplankton invites copepods and isopods which are scavengers, by nature. The clown fish feeds on the copepods, zooplankton, isopods and the algae present in the shallow waters. The lagoons formed because of the coral reefs are sheltered from the rage of the seas and function ideally as the clown fish habitat.

The clown fish prefers the company of sea anemones which inhabits the deep as well as shallow waters. The natural clown fish habitat is in the warmer waters of the Pacific Ocean and Indian Ocean, but not in those of the Caribbean. The clown fish habitat is found in the coastal regions that extend from the Japan to the Great Barrier reef in northwest Australia.

The sea around the Ryukyu Island, the coasts of Malaysia, especially the Indo-Malaysian region and southeast Asia offers favorable conditions for the clown fish habitat. The Red sea is also a known clown fish habitat.
+ نوشته شده در  سه شنبه بیست و دوم تیر 1389ساعت 14:46  توسط س.ح  | 


There are all kinds of flowers, like the Poinsettia that only blooms during winter. Annual flowers are flowers that you can plant during all kinds of season or the kind that bloom during different seasons of the year. These kinds of flowers are good for planting in your back yard. The best however are the kinds that survive all year long and do not cost a bundle to maintain.

When choosing flowers for your garden it is best to choose flowers that you know when they will bloom. Annual flowers are always the best choice to plant in your back yard or garden. The flowers that grow in different seasons are the kind of flowers we can get annual.

Make your choice of annual flowers is important because if you choose poorly the flower will rot before you have a chance to plant it. There are three choices you can make when choosing annual flowers. You can either buy hardy annuals, half hardy annuals and tender annuals. The difference between the three is that they bloom during different types of weather and soil conditions.

The best kind of flowers to plant during winter is hardy annuals that flourish during the cold season like in December. These flowers are usually planted during the spring season or fall season when the weather is slightly cold. . Unlike other annuals these hardy annual flowers don’t like hot weather as they are not heat tolerant. Some of the hardy flowers include foxglove, sweet alyssum, viola, calendula, cornflowers, pansy and many more. The half hardy annual flowers include snow-on –the-mountain, torenia, blue sage and several others.

+ نوشته شده در  سه شنبه بیست و دوم تیر 1389ساعت 14:33  توسط س.ح  | 

skin cancer

 Skin cancer is another common type of cancer. As the name suggests, skin cancer is a   cancerous condition of skin. There are three types of skin cancers: basal cell skin cancer, squalors cell skin cancer and the dangerous malignant melanoma. Since skin cancer is very closely associated to skin pigmentation, the fair skinned people are more at risk of developing skin cancer as compared to the dark skinned ones.

Skin cancer is the most treatable of all types, and the results of treatment are almost always positive. This year, there are expected to be a million new cases of skin cancer diagnosed, but only 1,000 deaths are expected that are caused by the disease. So you can see that even if you are diagnosed with skin cancer, your odds are 1,000 to 1 that you will beat the disease. Those are terrific odds!

Skin cancer is treated with an array of surgical procedures that are dependent on the need of the individual patient. Early detection and removal offer the best chance for a cure. The best defense against skin cancer is to avoid over exposure to sunlight (including tanning), which is the main cause of skin cancer, especially when it results in sunburn and blistering. Actually every one knows that we are facing problem of ultraviolet rays due to losing ozone layer in our atmosphere. And seek shade between 10am and 4pm when ultraviolet rays are the most intense and apply sunscreen.

Red spots that are rough or scaly are other skin cancer signs that should be shown to the doctor when in doubt. As skin cancer can start from or near a mole, make it a point to have your health care provider check all unusual moles that seem to be larger than others, have different colors or have irregular edges. This is because these are all signs for skin cancer..

+ نوشته شده در  دوشنبه بیست و یکم تیر 1389ساعت 14:40  توسط س.ح  | 

مقاله ی انگلیسی

Jasmine Essential Oil For Aromatherapy

A sturdy evergreen shrub of bright green leaves with white star shaped flowers, Jasmine with sweet and floral aroma, native of Asia and Africa is one of the oldest and widely used scented flower.

Jasmine flower blooms only at night hence they hand picked at night time only. Being the most delicate and extremely fragile, jasmine essential oil is steam distilled from its flowers. Huge quantities of jasmine petals are required to prepare one ounce of essential oil, hence is rare, extremely valuable and highly sought after oil.

Jasmine is preferred for its powerful characteristics that assist the body as an anti depressant, an aphrodisiac and confidence boosting qualities. The Chinese drink jasmine tea daily and use it to cleanse the air in sick rooms while Egyptians use it to relieve nervous disorders, insomnia and headaches.

Jasmine known to have aphrodisiac powers was used in different cultures in various ceremonies. The sensuously rich and exotic aroma of jasmine based massage oil can certainly be relied upon to evoke a romantic mood.

Jasmine oil despite being expensive is worthy for the skin. It encourages cell growth; increases skin elasticity and aids in healing minor to moderate burns. It is especially effective for people suffering from symptoms of apathy and fatigue as it helps in reducing fears. It also helps with muscle spasm and sprains.

Jasmine with its many healing properties acts as an antiseptic, anti-inflammatory agent and a sedative. It is considered as base oil for blending with other essential oil. When blended with herbs like Clary sage, geranium, lemon balm, rose, rosewood and sandalwood, it promotes the body's natural way of healing, making it indispensable in the world of aromatherapy.

Jasmine essential oil when massaged on the abdomen during the later stages of labour strengthens uterine contractions and relieves pain.

For stimulating bath oil, try this oil - 1/2 cup soy oil, 5 drops of jasmine essential oil, 3 drops of juniper essential oil and content from 4 - 5 vitamin E capsules.

Indulge your self with a massage, blend the following ingredients well - 8 tsp grape seed oil, 6 drops of jasmine essential oil, 2 drops each of tea tree oil and neroli oil. Before application warm the oil.

To create soothing and refreshing hair oil for scalp, blend 2 drops rosemary, 2 drops lavender, 2 drops clary sage, and 2 drops jasmine absolute to 1/2 ounce base oil.

+ نوشته شده در  یکشنبه سیزدهم تیر 1389ساعت 14:40  توسط س.ح  | 

+ نوشته شده در  یکشنبه هجدهم مرداد 1388ساعت 13:20  توسط س.ح  | 

نی نی

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+ نوشته شده در  یکشنبه هجدهم مرداد 1388ساعت 13:10  توسط س.ح  | 

+ نوشته شده در  یکشنبه هجدهم مرداد 1388ساعت 13:9  توسط س.ح  |