This document discusses marine bio-deterioration caused by fouling and boring organisms. It defines bio-deterioration as undesirable changes to materials caused by living organisms. Fouling organisms like algae and animals settle on surfaces like wood and steel, while boring organisms like mollusks and crustaceans bore into and damage materials like wood. This causes economic losses for fishing boats and aquaculture infrastructure. The document covers the types and impacts of fouling and boring, as well as control methods like cleaning, coatings and preservatives. It explains that fouling occurs as organisms find surfaces to attach to, while boring provides shelter, food or aids in digestion for some organisms.
SYSTEMATIC POSITION of clams
What is the difference between mussels, oysters, scallops and clams?
General characteristics of clams
Distribution and habitat of clams
BIOLOGY of clams
Breeding habit of clams
Present status of production
Craft and gear
Clams have two symmetrical shells(Bivalve)
They can filters their food
Clams can control their outer shells and shut them in response to stimuli, via a elastic ligament and two large muscles
In side their usually grey, black shells you can see a white, tan center
Clams have siphons that forces water out and allows them to take in micro organisms
There are over 150 edible species.There are over 15,000 species of clams.Small freshwater clams fertilize eggs in a pouch and bear their young until its shell develops.
The Giant clam can weigh more than 400lb and live for over 150 years.
It takes 3-4 years for a clam to mature to market size.
Some clams can produce pearls.One in 5,000 clams forms a pearl.
A clam can live until about 35 years if not eaten.
distribution:
Marine clams are abundant in the low and mid intertidal zone in temperate seas globally. Other species of marine mussel live in tropical intertidal areas, but not in the same huge numbers as in temperate zones.
Certain species of marine clams prefer salt marshes or quiet bays, while others thrive in pounding surf, completely covering wave-washed rocks. Some species have colonized abyssal depths near hydrothermal vents. The South African white mussel exceptionally doesn't bind itself to rocks but burrows into sandy beaches extending two tubes above the sand surface for ingestion of food and water and exhausting wastes.
Freshwater clams inhabit permanent lakes, rivers, canals and streams throughout the world except in the polar regions. They require a constant source of cool, clean water. They prefer water with a substantial mineral content, using calcium carbonate to build their shells.
Fouling is the accumulation of unwanted material on solid surfaces to the detriment of function. The fouling material can consist of either living organisms (biofouling)or a non-living substance (inorganic or organic).
Biofouling is economically significant on ships' hulls where high level of fouling can increase drag
SYSTEMATIC POSITION of clams
What is the difference between mussels, oysters, scallops and clams?
General characteristics of clams
Distribution and habitat of clams
BIOLOGY of clams
Breeding habit of clams
Present status of production
Craft and gear
Clams have two symmetrical shells(Bivalve)
They can filters their food
Clams can control their outer shells and shut them in response to stimuli, via a elastic ligament and two large muscles
In side their usually grey, black shells you can see a white, tan center
Clams have siphons that forces water out and allows them to take in micro organisms
There are over 150 edible species.There are over 15,000 species of clams.Small freshwater clams fertilize eggs in a pouch and bear their young until its shell develops.
The Giant clam can weigh more than 400lb and live for over 150 years.
It takes 3-4 years for a clam to mature to market size.
Some clams can produce pearls.One in 5,000 clams forms a pearl.
A clam can live until about 35 years if not eaten.
distribution:
Marine clams are abundant in the low and mid intertidal zone in temperate seas globally. Other species of marine mussel live in tropical intertidal areas, but not in the same huge numbers as in temperate zones.
Certain species of marine clams prefer salt marshes or quiet bays, while others thrive in pounding surf, completely covering wave-washed rocks. Some species have colonized abyssal depths near hydrothermal vents. The South African white mussel exceptionally doesn't bind itself to rocks but burrows into sandy beaches extending two tubes above the sand surface for ingestion of food and water and exhausting wastes.
Freshwater clams inhabit permanent lakes, rivers, canals and streams throughout the world except in the polar regions. They require a constant source of cool, clean water. They prefer water with a substantial mineral content, using calcium carbonate to build their shells.
Fouling is the accumulation of unwanted material on solid surfaces to the detriment of function. The fouling material can consist of either living organisms (biofouling)or a non-living substance (inorganic or organic).
Biofouling is economically significant on ships' hulls where high level of fouling can increase drag
A brief presentation on fish vaccination and its application particularly in Bangladesh. The overall process is described in a nutshell here. The types, procedure of formation, regulation, licensing and use are among them.
Defence mechanism in finfish and shellfish jassi 2Jaspreet Singh
Farming of fish and shellfish has gained significant grounds in several parts of the world .
Now a days disease is main problem in aquafarming.
In recent years ,lot of attention is being given to health management using various forms of immunoprophylactic techniques such as vaccination and immunostimulation .
To reduce immunoprophylactic application ,it is vital to have insight into specific and non specific defense mechanism of farmed animal .
Through disease process studies ,it is very well known that a pathogen can cause disease only if it can overcome the non specific and specific defense barriers of the host and successfully establish and proliferate
Fishing is the art of catching fish and other aquatic animals. Many years ago man started using various type of gear used for hunting the terrestrial animals and for fishing also. It is very difficult to say which started first, but some time it is opined that fishing is younger. Reason behind it is easy to catch animals in the land than in the water. In olden days fishing was not having much importance as there was no demand for fish. Earlier fishing was restricted to a particular community but it is not so now. In order to meet the increased demand, fishing is now carried out industrially. Fishing technology not only concerns fishing gear, fishing methods and vessels but also concern Biological and Environmental factors
The demand of seaweeds nowadays have been increasing. In order to supply the needs, background on seaweeds culture is very important. We must know how to culture seaweeds, handle it with care, the methods to be used, and the environmental factors that may affect the growth of seaweeds.
The transfer of fish seed from the hatchery or place of collection to the rearing pond is called transport of fish seed. The seed fish include fry and fingerlings.
Introduction
Fish Health Management GOALS
Principles of fish health management
Factors affecting fish health
Common symptoms of diseases
General preventive measures
Proper Health Management through Manipulating the disease triangle
Conclusion
References
A brief presentation on fish vaccination and its application particularly in Bangladesh. The overall process is described in a nutshell here. The types, procedure of formation, regulation, licensing and use are among them.
Defence mechanism in finfish and shellfish jassi 2Jaspreet Singh
Farming of fish and shellfish has gained significant grounds in several parts of the world .
Now a days disease is main problem in aquafarming.
In recent years ,lot of attention is being given to health management using various forms of immunoprophylactic techniques such as vaccination and immunostimulation .
To reduce immunoprophylactic application ,it is vital to have insight into specific and non specific defense mechanism of farmed animal .
Through disease process studies ,it is very well known that a pathogen can cause disease only if it can overcome the non specific and specific defense barriers of the host and successfully establish and proliferate
Fishing is the art of catching fish and other aquatic animals. Many years ago man started using various type of gear used for hunting the terrestrial animals and for fishing also. It is very difficult to say which started first, but some time it is opined that fishing is younger. Reason behind it is easy to catch animals in the land than in the water. In olden days fishing was not having much importance as there was no demand for fish. Earlier fishing was restricted to a particular community but it is not so now. In order to meet the increased demand, fishing is now carried out industrially. Fishing technology not only concerns fishing gear, fishing methods and vessels but also concern Biological and Environmental factors
The demand of seaweeds nowadays have been increasing. In order to supply the needs, background on seaweeds culture is very important. We must know how to culture seaweeds, handle it with care, the methods to be used, and the environmental factors that may affect the growth of seaweeds.
The transfer of fish seed from the hatchery or place of collection to the rearing pond is called transport of fish seed. The seed fish include fry and fingerlings.
Introduction
Fish Health Management GOALS
Principles of fish health management
Factors affecting fish health
Common symptoms of diseases
General preventive measures
Proper Health Management through Manipulating the disease triangle
Conclusion
References
Application of Bio-FAEG, a Biofouling Assessment Model in Engine Performance...Tosin Onabanjo
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Sash Windows are made in such a way that they can be easily dismantled for repair or for replacing broken sash cords.
So by providing them with a protective layer, equal sized brushes and the correct type of paint will help you in maintaining your sash windows.
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Coral reefs are some of the most diverse ecosystems in the world. About 25% of the ocean's fish depend on healthy coral reefs. Unfortunately, coral reef ecosystems are severely threatened. Some threats are natural, such as diseases, predators, and storms. Other threats are caused by people, including pollution, sedimentation, unsustainable fishing practices, and climate change, which is raising ocean temperatures and causing ocean acidification. Saving and restoring the world's coral reefs requires a multi-pronged approach that ranges from the local to the global level.
presentation was provided by Prof W.U Chandrasekara
Department of Zoology and Environmental Management
For Coastal and Marine resource management course
A presentation on Marine Bio-Deterioration, which covers basic concepts & almost all aspects related to it... It can be use for understanding it in a much elaborative level...
This is the second chapter under the Unit-1 of NEET examination syllabus. It is specially prepared to make the students of the NEET examination score all the possible questions for the chappter.
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...University of Maribor
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This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptxMAGOTI ERNEST
Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
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2. SYLLABUS
• PSZOOCN404:PLANKTOLOGY, FISH, FISHERY
SCIENCE AND AQUACULTURE
• UNIT I-PLANKTOLOGY
• SUB-UNIT-1.3-MARINE BIO-
DETERIORATION:FOULING AND BORING
ORGANISMS.
3. CONTENT
• WHAT IS BIO-DETERIORATION
• INTRODUCTION OF BIO-DETERIORATION
• WHAT IS FOULING
• WHAT ARE FOULING ORGANISMS
• TYPES OF FOULING
• FORMATION OF BIOFOULING
• IMPACT OF FOULING
• CONTROL MEASURES
• WHAT IS BORING
• BORING ORGANISMS
• FORMATION OF BORING
• IMPACT OF BORING
• CONTROL MEASURES
• WHY DOES FOULING OR BORING TAKES PLACE
• CONCLUSION
• REFRENCE
4. WHAT IS BIO-DETERIORATION
• Bio-deterioration is defined as any undesirable
change in the properties of a material caused
by the vital activities of biological organisms.
5. INTRODUCTION OF BIO-
DETERIORATION
• In India around 1,80,000 crafts comprising of catamarans, dug out canoes
plank built boats and modern mechanized boats are employed for fishing.
• Of these majority are of wood.
• And a loss of millions of rupees occur annually due to bio-deterioration of
these boats.
• There are two main reasons of marine bio-deterioration
• a)bio-deterioration by fouling organisms.
• b)bio-deterioration by boring organisms.
6. WHAT IS FOULING
• Fouling does not destroy materials directly.
• It is the settlement of marine fouling
organisms on wood , steel , aluminium .
• The fouling material consist of either living
organisms or non-living substances.
7. FOULING ORGANISMS
• There are two main types of fouling organisms
• 1)plant fouling organisms-like
bacteria,fungi,algae,diatoms
• 2)animal fouling organisms-like
clams,oysters,mussels,tube worms.
8. TYPES OF FOULING
• BIOFOULING
• PRECIPITATE FOULING
• PARTICULATE FOULING
• CORROSION FOULING
• CHEMICAL REACTION FOULING
9. FORMATION OF BIOFOULING
• In the aquatic environment any submerged solid surface gets
coated by a complex layer initially consisting of an organic
conditioning film.
• Formation of this film is immediately followed by an accumulation
of micro organisms(eg-bacteria,fungi,diatoms,and other organisms)
• Due to the availability of nutrients and secretions the bioflim
allows the secondary colonizers(protozoans,algae)
• Within few weeks tertiary colonizers are attracted and attached
(macrofoulers).they are are of two types a)soft foulers-
invertebrates like soft corals,sponges,anemones.b)hard foulers-
barnacles,mussels,tube worms etc
10. IMPACT OF FOULING
• It causes huge material and economic loss in maintance of
mariculture facilities,shipping facilities,vessels,seawater
pipelines.
• Biofouling increases weight and frictional resistance of the
ship thus affecting its hydrodynamics & speed.
• Biofouling is everywhere even the parts of the ship thus
affected like heat exchangers,water-cooling pipes
etc.biofouling is also present on the heating and cooling
system of power stations or factories.
• In aquacultures biofouling is of 2 types a)on-infrastructure-
ie.on immersed mesh cages and trawls.b) b)on-stock
organisms-particularly mussels,oysters,pearl oysters.
11. CONTROL MEASURES
• Control measures of biofouling are of 3 types.
• a)physical method
• b)chemical method
• c)biological method
•
• a)physical method-the simplest method for treatment of fouling is simply to remove by mechnical
cleaning ie.by high pressure water jets. And scraping.
•
• b)chemical method-using of oxiising and non-oxidising antimicrobials.
• Chlorination
• UV-radiation
• Proper waste water disposal
• Use of anti-fouling paints
• Use of copper based coating and TBT Tributyl tin is however restricted.
•
• c)biological method-several kinds of natural anti-fouling agents that inhibit the growth of fouling
organisms have been isolated from marine organisms like
sponges,coelenterates,holothurians,ascidians etc.
12. WHAT IS BORING
• Destruction of wood,rocks,by marine borer is of great
economic concern.
• These marine borers attack ships,logs,rocks,hard clay,
coral reefs and wooden materials available in sea.
• They cause structural damage by boring deep into the
wood and making them unservicable.
• The marine borers that cause the greatest amount of
damage are of 2 types a)molluscs b)crustaceans.
13. • BORING ORGANISMS
• a)molluscs-they consists of 2 types of borers
wood borers eg.-teredo-shipworm.and Rock
borers-pholadidae.
• b)crustaceans-the important crustaceans borers
are of two types
• limnoria and sphaeroma belonging to order
amphipoda and isopoda.
14. FORMATION OF BORING
MOLLUSCANS
• The larvae make very small entrance holes on the surface of the
wood.
• But once inside the wood they increase rapidly in size and develop
the characteristic worm like bodies.
• As the animal advances into the wood it secertes a proctective
linning the burrow thus reducing the strength of wood.
• The young attack wood by boring small entrance holes and once
within the wood or rock they continue their boring to
accommodate the growth of their body.they remain imprisioned
and holes do not open to exterior.
15. CRUSTACEANS-
• They do not bore deep like molluscans.
• They make narrow gallaries and do not remain but move
about
• The animals make extensive network of tunnels in the
wood like the honeycomb.
• The important crustacean borers are of two types limoria
and sphaeroma belonging to order amphipoda and
isopoda.
•
16. IMPACT OF BORERS
• Boring leads great loss of the timber wood
• It results in the structural damage to the wooden
bridgee,plank boats,vessels.
• It results in the loss of the nail holding property.
• It results in the spongyness of the wood,decreases the
durability of the wood and its strength.
• In aquaculture practice of pearl oysters,clams it results in
death of organism as they bore and does not allow the
oyster to open the shell some times they even cement the
opening some carnivorous and preying on oysters.
17. CONTROL MEASURES
• Physical barriers such as metals,concrete and
plastic have been used to achieve protection.
• Tradionally use of crude oil,coconut oil,black
tar,fuel oil etc singly or in combination were used
for protection.
• Chemical preservatives such as use of creosote an
oil borne preservative was used. Water borne
preservative such as copper-chrome-arsenic
compounds are effective against borers.
• Dual treatment is very effective
18. WHY DOES FOULING AND BORING
TAKES PLACE
• The fouling take place due to settelement of fouling
organisms on wood,steel,aluminium.
• It does not destroy the material directly because it gets the
substratum for growth of varios colonizers.
• Wheras boring takes place due to the shelther acquring
activity of borers or for food as these molluscs and
crustaceans depend upon the planktons which settles on
the submerged or wetted woods or rocks thus they bore
either for protection,shelter or for scrapping planktons or
some even have cellulase enzyme in their liver which feeds
on the fresh timber,wood thus they carryout
boring.Research is still being done to findout whether
borers feed on wood or scrap the algae,planktons.
19. CONCLUSION
• It helps us to understand various communities of
marine foulers and borers.
• It helps us to study the causes or economic loss
generated by these organisms.
• It shows the impact on marine environment
• It helps us to study the impacts of controling
foulers and borers.
• Which preventive measure or remedial
procedures to be followed to overcome bio-
deterioration