m****x
发帖数: 2506 | 1 找到一个鱼泛滥成灾的地方
鱼肚里全是这个
大嘴是
皮皮也是
气死了
求鉴定这是什么虫
★ 发自iPhone App: ChineseWeb 7.8 | m****x
发帖数: 2506 | 2 http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Forum=7&
找到了，看来鱼泛滥的地方容易长虫。 鱼多不是好事
Parasites and Disease
At some time an outbreak of some type of disease or parasite will likely
occur. However, the severity, frequency and duration of these outbreaks can
be reduced by controlling fish stress. Conditions favorable for disease
outbreaks require a host, such as the fish, a disease organism such as a
parasite and a stress such as low dissolved oxygen. Common stress factors
are rough handling, water temperature changes, low oxygen, water quality
changes, poor nutrition and fish crowding.
Diseases can be classified as infectious and non-infectious. Infectious
diseases include those caused by parasitic bacterial and viral pathogens. In
the baitfish industry, it is believed that parasites are the most
devastating disease agents because of the variety and number of parasites.
Yet treatment of parasite infestations if often simpler than treatment of
bacterial or viral infections.
Protozoans Protozoans are small parasites and usually require microscopic
examination for diagnosis. Infections of the gills and skin are most common.
However, some protozoans can infect fish ovaries causing partial or
complete sterility.
1. Ich Ich is usually visible as white spots on the skin; however it also
infects the gills of fish. Occurring from fall to spring, Ich often appears
after fish have been seined and moved from one pond to another.
2. Trichodina Trichodina is a circular protozoan with many abrasive grooves
on its surface. It irritates the skin and gills causing fish to die from
impaired respiration problems, secondary infections or starvation. Outbreaks
can occur from fall to spring.
3. Ictyoboda Ictyoboda (Costia) is an extremely small parasite. Large
numbers cause severe irritation to gills. On the skin, erosion of mucus and
skin makes the fish susceptible to secondary bacterial infections. Early
diagnosis and treatment are important in limiting mortality.
4. Chilodonella Chilodonella is a parasite that usually attacks the gills
but can be found on the skin. It causes red, puffy or frayed gills. Fish
mortality is more rapid and extensive than with other external parasites. It
occurs in cool weather from fall to spring.
5. Scyphidia and Epistylis Scyphidia and Epistylis attach to the gill or
skin surface. They usually occur in the spring and these parasites are
characteristic of over fertile water.
6. Sporozoan Parasites Sporozoan parasites are protozoans which produce a
cyst in the fish that contains spores. Mitraspora cyprini infects goldfish
and can be found in the kidney. The kidney enlarges and the fish appears
bloated. Myxobolus notemigoni and M. aregenteus form cysts beneath the
scales of golden shiners, making the fish unsightly. Pleistophora ovarie
infects golden shiner ovaries, reducing egg production. Egg masses appear
discolored, opaque, yellow or brown instead of light green. Treatments for
these diseases have not been developed and prevention requires culling of
infected fish and disinfection of ponds. Pleistophora infections may be
reduced by removing golden shiner females from brood fish ponds after two
years of age.
Trematodes (Grubs) Flukes or grubs infect gills, skin and internal organs of
fish. These parasites weaken fish and make the fish more susceptible to
bacterial or more lethal parasitic infections. The brain fluke of the
fathead minnow, (Ornithodiplostomum ptychocheilus) can be controlled by
killing its secondary host, the snail. Black grub and yellow grub can also
be controlled by destroying snail populations.
Cestodes (Tapeworms) The Asian tapeworm has become and important golden
shiner parasite. Small fish less than 1 inch in length are susceptible, with
up to 80% mortality. Copepods carry infected stages and the parasite can be
transferred by wildlife and equipment. Good pond management, including pond
disinfection, disposal of diseased stock and treatment to kill copepods can
reduce the chances of infection.
In fathead minnows, Ligula intestinalis, a large visceral worm can cause
mortalities of about 3%. No effective treatment has been developed, but
prevention by disposal of diseased fish and pond disinfection can reduce
losses.
Nematodes (Roundworms) Roundworms are infrequently found in several organs
of baitfish. However, in golden shiners, Capillaira catostomi, causes
significant mortality by infecting the gut and the fish starves.
Crustaceans Two crustaceans cause significant damage to baitfish. Argulus is
an irritant to goldfish causing weight loss and mortality in extreme cases.
The anchor worm, Lernaea, infects all fishes and may cause mortality in
small fish. The protruding "worm" and red sores cause the fish to be
unsalable. Control of copepod forms of these crustaceans is effective in
controlling adult forms. Fungi Fungi are often a secondary problem
associated with another infection. They usually occur in the fall or winter,
but fungus can grow on stressed fish even in the summer. Saprolegnia covers
the body of fish with cotton-like growth and causes skin lesions and
chronic but severe losses. Branchiomyces grows on the gills of golden
shiners causing impaired respiration and mortalities. Good water quality and
adequate fish nutrition help prevent fungus outbreaks.
Bacterial Diseases Bacterial infections of baitfishes are almost always
related to environmental stress. The most important bacteria, Flexibacter
columnaris, Aeromonas hydrophilla and A. salmonicida are found in most soil
and water. Because these bacteria are almost always present, they become a
problem when conditions favor their growth, especially when warm water
becomes nutrient rich or fish are crowded or stressed.
Columnaris infections are often recognized by a pale saddle shaped patch on
the back of fish. Other signs are eroded fins and gill filaments. Fish in
warm or cold water are susceptible to columnaris when they are stressed.
Recent studies indicate that the pH of water may be changed to control
columnaris infections.
Goldfish ulcer disease, A. salmonicida, attacks large goldfish. Mortalities
of over 40% can result. Lesions on the fish start as small white spots but
grow to 1 inch or more in size and are hemorrhagic. Changing water
temperatures in the spring and fall encourages this disease.
Another bacterial disease, A. hydrophilla, is common to all species of
baitfish. Erosion of skin resulting in open sores or shallow ulcers,
bloating, popeye and hemorrhaging under the chin and around fins are all
signs of this bacterial infection. Warm water, over 80oF, favors outbreaks..
Viral Diseases The only important viral disease of baitfish infects golden
shiners. The golden shiner virus causes gradual mortalities over several
months. A few dead or dying fish may appear each day. Hemorrhaging of the
underside, back, eye, and head of the fish are signs of this disease. The
virus usually occurs in the fall when fish reach 2 1/2 inches in length.
Because of the low mortality associated with the disease and the lack of an
effective control, the disease is usually allowed to run its course. Pond
management including the isolation of infected stock and pond disinfection
may help control the spread of the virus. | p**********8
发帖数: 1709 | 3 还是真的啊！
煮熟吃，营养丰富，实乃肉宗大补，哇哇哇呕。。。。。。。。 | o*****4
发帖数: 1245 | | c*******s
发帖数: 5839 | | m********4
发帖数: 1837 | 6 太长，那到底是能吃还是不能吃呢？ 虽然我基本不吃鱼哈哈
can
【在 m****x 的大作中提到】
: http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Forum=7&
: 找到了，看来鱼泛滥的地方容易长虫。 鱼多不是好事
: Parasites and Disease
: At some time an outbreak of some type of disease or parasite will likely
: occur. However, the severity, frequency and duration of these outbreaks can
: be reduced by controlling fish stress. Conditions favorable for disease
: outbreaks require a host, such as the fish, a disease organism such as a
: parasite and a stress such as low dissolved oxygen. Common stress factors
: are rough handling, water temperature changes, low oxygen, water quality
: changes, poor nutrition and fish crowding.
| p**********8
发帖数: 1709 | 7 最高指示，请发帖人遵照执行！
【在 c*******s 的大作中提到】
: 吃时别开灯
| p**********8
发帖数: 1709 | 8 虫子太长也能吃，版大都交待了，吃时别开灯。
【在 m********4 的大作中提到】
: 太长，那到底是能吃还是不能吃呢？ 虽然我基本不吃鱼哈哈
:
: can
| l**********n
发帖数: 5272 | | T**r
发帖数: 7016 | | | | m**o
发帖数: 9137 | 11 吃的时候别嚼。
【在 T**r 的大作中提到】
: KV说，这虫煮熟了是脆绷绷的
| s*********d
发帖数: 531 | 12 你妹的。。刚清蒸了一条鱼吃掉， 就看到这图。。。有心理阴影了啊怎么办。。蒸鱼
10分钟大火能杀死寄生虫吗。 | o******w
发帖数: 3262 | | l**********n
发帖数: 5272 | 14 据说日本人吃生鱼吃得大脑长虫，照片是血腥勿入的。
【在 o******w 的大作中提到】
: 赶紧吃驱虫要，要不肚子就要成这样了
| c*******s
发帖数: 5839 | 15 你把血腥勿入写在这里管个屁用
图删了，限制级太高
【在 l**********n 的大作中提到】
: 据说日本人吃生鱼吃得大脑长虫，照片是血腥勿入的。
| y***n
发帖数: 2806 | 16 奶奶的，我杀鱼大部分时候都不注意内脏的，有时片两块肉下来，都看不到内脏的。有
点恶心。
【在 m****x 的大作中提到】
: 找到一个鱼泛滥成灾的地方
: 鱼肚里全是这个
: 大嘴是
: 皮皮也是
: 气死了
: 求鉴定这是什么虫
: ★ 发自iPhone App: ChineseWeb 7.8
| w******u
发帖数: 5413 | | l**********n
发帖数: 5272 | 18 哈哈，我倒是想写到主贴子标题里，写不进去啊。
删了好，我也担心有人受不了会骂呢。
这个日本人脑子长寄生虫做开颅术的照片也算广为流行了，就是到现在我都不清楚真假
，有说是假的。
【在 c*******s 的大作中提到】
: 你把血腥勿入写在这里管个屁用
: 图删了，限制级太高
| c*******s
发帖数: 5839 | 19 晚上本来想做麻婆豆腐
看了你的图，决定辟谷喝茶
【在 l**********n 的大作中提到】
: 哈哈，我倒是想写到主贴子标题里，写不进去啊。
: 删了好，我也担心有人受不了会骂呢。
: 这个日本人脑子长寄生虫做开颅术的照片也算广为流行了，就是到现在我都不清楚真假
: ，有说是假的。
| I***a
发帖数: 13467 | | | | l**********n
发帖数: 5272 | 21 呵呵，可以考虑改吃凉拌海蜇，清脆爽口。
我还算神经比较坚强，一般谈论恶心的东西不会影响到我的胃口，一码是一码；我老婆
就不行，饭桌上不能谈论什么大便啊屎尿啊这样的话题，否则就吃不下饭。
【在 c*******s 的大作中提到】
: 晚上本来想做麻婆豆腐
: 看了你的图，决定辟谷喝茶
| c****z
发帖数: 299 | 22 你google一下就有了，还是提醒一下 挺恶心的，
看过后这几年我都没吃生鱼片
【在 I***a 的大作中提到】
: 可惜没看到那图，
: 咳
| m********4
发帖数: 1837 | 23 如果你非的那条鱼真这样子，咋办？？？？？
【在 y***n 的大作中提到】
: 奶奶的，我杀鱼大部分时候都不注意内脏的，有时片两块肉下来，都看不到内脏的。有
: 点恶心。
|
|
