Asexual vs. Sexual Reproduction
... and female sex, with the male producing sperm and the female producing eggs. When a sperm and egg meet during fertilization, a zygote, the first cell of a new organism, is formed ( Figure 1.2). This process combines the genetic material from both parents. The resulting organism will be genetically u ...
... and female sex, with the male producing sperm and the female producing eggs. When a sperm and egg meet during fertilization, a zygote, the first cell of a new organism, is formed ( Figure 1.2). This process combines the genetic material from both parents. The resulting organism will be genetically u ...
Northeast Pacific Ocean
... – The temp of the water is a very significant factor in the north pacific marine life, because it affects the chemical reactions that happen in the water. Most of the animals live in the top layer of the water because it is all about the same temperature, thanks to the energy from the sun. The sun i ...
... – The temp of the water is a very significant factor in the north pacific marine life, because it affects the chemical reactions that happen in the water. Most of the animals live in the top layer of the water because it is all about the same temperature, thanks to the energy from the sun. The sun i ...
- Central Marine Fisheries Research Institute
... are passed during laying through an opaque glandular portion of the oviduct on the left side of the mantle, where they are coated with a layer of egg jelly. The oviducal gland is connected to two large nidamental glands, which contains thick white gelatinous material which is used to embed each ovum ...
... are passed during laying through an opaque glandular portion of the oviduct on the left side of the mantle, where they are coated with a layer of egg jelly. The oviducal gland is connected to two large nidamental glands, which contains thick white gelatinous material which is used to embed each ovum ...
pdf
... nutrients there, while keeping the bay cleaner. He and Crabtree started studying the southern end of Irondequoit Bay in order to find out how flow-control devices affect the fish community. Evaluating the device was helpful, but more importantly, it ...
... nutrients there, while keeping the bay cleaner. He and Crabtree started studying the southern end of Irondequoit Bay in order to find out how flow-control devices affect the fish community. Evaluating the device was helpful, but more importantly, it ...
Asexual vs. Sexual Reproduction
... external fertilization: Process during which egg and sperm meet after being released into water. fertilization: Union of a sperm and egg. fragmentation: Reproductive process in which a new organism forms from a fragment of a parent organism. gamete: Sex cell, such as sperm or egg. gonad: Organ that ...
... external fertilization: Process during which egg and sperm meet after being released into water. fertilization: Union of a sperm and egg. fragmentation: Reproductive process in which a new organism forms from a fragment of a parent organism. gamete: Sex cell, such as sperm or egg. gonad: Organ that ...
Asexual vs. Sexual Reproduction
... external fertilization: Process during which egg and sperm meet after being released into water. fertilization: Union of a sperm and egg. fragmentation: Reproductive process in which a new organism forms from a fragment of a parent organism. gamete: Sex cell, such as sperm or egg. gonad: Organ that ...
... external fertilization: Process during which egg and sperm meet after being released into water. fertilization: Union of a sperm and egg. fragmentation: Reproductive process in which a new organism forms from a fragment of a parent organism. gamete: Sex cell, such as sperm or egg. gonad: Organ that ...
Answers Reproduction
... 1 Fertilisation in sexual reproduction happens when the the female sex cells (eggs or ova) are merges with the male sex cells (sperm). 2 Fertilisation may happen either externally or internally. With many acquatic animals, the sperm swims through the water to fertilise the egg (or ovum). This is c ...
... 1 Fertilisation in sexual reproduction happens when the the female sex cells (eggs or ova) are merges with the male sex cells (sperm). 2 Fertilisation may happen either externally or internally. With many acquatic animals, the sperm swims through the water to fertilise the egg (or ovum). This is c ...
Biodiversity of fishes: Capacity building in Project-3 Chapter 13 Keiichi Matsuura
... countries with great opportunities to learn about research on fish taxonomy and fish diversity. These workshops also resulted in establishing human networks among young scientists and fish taxonomy experts from the member countries, which will be very beneficial for developing fish taxonomy in the r ...
... countries with great opportunities to learn about research on fish taxonomy and fish diversity. These workshops also resulted in establishing human networks among young scientists and fish taxonomy experts from the member countries, which will be very beneficial for developing fish taxonomy in the r ...
Judy`s lecture notes on Chi-Square
... Chi-square (and contingency tables) are used to analyze two categorical data – counts or percents (relative frequencies). Example: A 2-way table, with categorical variables (counts) ...
... Chi-square (and contingency tables) are used to analyze two categorical data – counts or percents (relative frequencies). Example: A 2-way table, with categorical variables (counts) ...
February 12, 2008 - The Public Interest Network
... on only 30 percent of fish stocks it manages. For the other 70 percent, the Pacific Council does not have sufficient data to know whether or not the fish populations are healthy. “Marine scientists tell us that oceans need to be managed as a whole ecosystem, not one species at a time. How can we ma ...
... on only 30 percent of fish stocks it manages. For the other 70 percent, the Pacific Council does not have sufficient data to know whether or not the fish populations are healthy. “Marine scientists tell us that oceans need to be managed as a whole ecosystem, not one species at a time. How can we ma ...
REPRODUCTION IN ANIMALS
... lays only one egg at a time? Ans. Though these animals lay hundreds of eggs and release millions of sperms, all the eggs do not get fertilized and develop into new individuals. This is because the eggs and sperms get exposed to water movement, wind and rainfall. Also, there are other animals in the ...
... lays only one egg at a time? Ans. Though these animals lay hundreds of eggs and release millions of sperms, all the eggs do not get fertilized and develop into new individuals. This is because the eggs and sperms get exposed to water movement, wind and rainfall. Also, there are other animals in the ...
Reproduction
... egg cell. The male structure is called the stamen. It consists of the filament and the pollenproducing anther. A new seed is formed when an egg cell joins with a pollen cell in the process of pollination. Pollination occurs when pollen grains are carried from the anther of the stamen to the stigma o ...
... egg cell. The male structure is called the stamen. It consists of the filament and the pollenproducing anther. A new seed is formed when an egg cell joins with a pollen cell in the process of pollination. Pollination occurs when pollen grains are carried from the anther of the stamen to the stigma o ...
Muscle markers and regulatory factors in marine fish under different
... We studied molecules as c-met, Akt and MAPK in two species of marine fish: Gilthead sea bream (Sparus aurata) and sea bass (Dicentrarchus labrax) cultured at different dietary conditions. We have also focused our attention on the MyoD2, Myogenin and Myostatin expression in sea bream. Our studies usi ...
... We studied molecules as c-met, Akt and MAPK in two species of marine fish: Gilthead sea bream (Sparus aurata) and sea bass (Dicentrarchus labrax) cultured at different dietary conditions. We have also focused our attention on the MyoD2, Myogenin and Myostatin expression in sea bream. Our studies usi ...
Downloadable Glossary
... about half of the seafood produced globally. Bioaccumulation: The accumulation of substances or chemicals in the food chain at a rate than can be neutralized. This often affects high-order species in the chain, such as tuna, and is the mechanism behind higher mercury levels in some fish. Biomass ...
... about half of the seafood produced globally. Bioaccumulation: The accumulation of substances or chemicals in the food chain at a rate than can be neutralized. This often affects high-order species in the chain, such as tuna, and is the mechanism behind higher mercury levels in some fish. Biomass ...
Anatomy and Physiology
... Cheek- fleshy side of the face Dewlap- loose skin under the chin Elbow- upper joint of the front leg Flank- fleshy part of the side Foot pad- part that the animal walks on Forearm- front limb just below the elbow Guard hair- longer course hair above the ...
... Cheek- fleshy side of the face Dewlap- loose skin under the chin Elbow- upper joint of the front leg Flank- fleshy part of the side Foot pad- part that the animal walks on Forearm- front limb just below the elbow Guard hair- longer course hair above the ...
Sperm Concentrations and Egg Fertilization Rates
... mone-induced spawning and the collection of sperm and egg samples immediately after detection of eggs in the water. Collected anchovy were acclimated to the holding tanks for several months before hormone treatments, and the trials began only when the majority of fish had well-developed gonads. The ...
... mone-induced spawning and the collection of sperm and egg samples immediately after detection of eggs in the water. Collected anchovy were acclimated to the holding tanks for several months before hormone treatments, and the trials began only when the majority of fish had well-developed gonads. The ...
4.3 Aquatic Food Production Systems
... sustainable and are very environmentally damaging: • Dredging – drags a metal bag across the ocean floor. Very damaging to the ecosystem. Captures anything in path. • Gillnets – a curtain of netting is placed in the water with holes large enough for fish to get head but not body through. Often traps ...
... sustainable and are very environmentally damaging: • Dredging – drags a metal bag across the ocean floor. Very damaging to the ecosystem. Captures anything in path. • Gillnets – a curtain of netting is placed in the water with holes large enough for fish to get head but not body through. Often traps ...
Haplochromis burtoni – Burton`s Mouthbrooder
... Immature females school with non-territorial males. As females mature and become gravid they begin to show preference for territorial males. The preference shift is mediated by sex hormones that may influence perception - to enhance female visual acuity and ability to differentiate between dominant ...
... Immature females school with non-territorial males. As females mature and become gravid they begin to show preference for territorial males. The preference shift is mediated by sex hormones that may influence perception - to enhance female visual acuity and ability to differentiate between dominant ...
doc lab final notes
... stomach – site of extracellular digestion mouth – site of ingestion at the end of the manubrium. The edge of the mouth is ringed by fleshy projections called oral lobes. These structures assist with ingestion. Indigestible food is eliminated through the mouth, as well radial canals – four cana ...
... stomach – site of extracellular digestion mouth – site of ingestion at the end of the manubrium. The edge of the mouth is ringed by fleshy projections called oral lobes. These structures assist with ingestion. Indigestible food is eliminated through the mouth, as well radial canals – four cana ...
Final Project Literature Sources
... Elliot, J.M. A comparative study of the dispersal of 10 species of stream invertebrates. Freshwater Biology 48:1652-1688. Hutchinson, G. E. 1981. Thoughts on aquatic insects. BioScience 31:495-500. Maddrell, S. H. P. 1998. Why are there no insects in the open sea? Journal of Experimental Biology 201 ...
... Elliot, J.M. A comparative study of the dispersal of 10 species of stream invertebrates. Freshwater Biology 48:1652-1688. Hutchinson, G. E. 1981. Thoughts on aquatic insects. BioScience 31:495-500. Maddrell, S. H. P. 1998. Why are there no insects in the open sea? Journal of Experimental Biology 201 ...
What are the differences between fish, sharks and whales?
... Then, there is Oviviparity(which is n mixture of the two above). Eggs develop inside the female and then the offspring goes out, this is also the most common way that sharks give birth, e.g. Ragged-tooth shark. Some sharks fertilize their eggs internally, while others fertilize it externally. ...
... Then, there is Oviviparity(which is n mixture of the two above). Eggs develop inside the female and then the offspring goes out, this is also the most common way that sharks give birth, e.g. Ragged-tooth shark. Some sharks fertilize their eggs internally, while others fertilize it externally. ...
In the Wild - Maryland Zoo
... Male spiders do not have penises They use their pedipalps located between their jaws and first pair of legs and when the male is ready to mate the pedipalps become enlarged The male will release sperm onto a web and use its pedipalps to suck up the sperm When it finds a mature female it will ...
... Male spiders do not have penises They use their pedipalps located between their jaws and first pair of legs and when the male is ready to mate the pedipalps become enlarged The male will release sperm onto a web and use its pedipalps to suck up the sperm When it finds a mature female it will ...
Columbia River fishing plan could alter limits for salmon, steelhead
... six initial alternatives on the planned environmental impact statement. An abundance-based management alternative considers the numbers of returning adult fish, with managers setting seasons and catch limits accordingly. It's the system currently in place for most species but requires on-the-fly cha ...
... six initial alternatives on the planned environmental impact statement. An abundance-based management alternative considers the numbers of returning adult fish, with managers setting seasons and catch limits accordingly. It's the system currently in place for most species but requires on-the-fly cha ...
New fossil species from a fish-eat-fish world when limbed
... Daeschler said Holoptychius and Tiktaalik were both large predatory fishes adapted to life in stream environments. The two species may have competed with one another for similar prey, although it is possible they specialized in slightly different niches; Tiktaalik's tetrapod-like skeletal features m ...
... Daeschler said Holoptychius and Tiktaalik were both large predatory fishes adapted to life in stream environments. The two species may have competed with one another for similar prey, although it is possible they specialized in slightly different niches; Tiktaalik's tetrapod-like skeletal features m ...
Introduction to Vertebrates _Notes - Extra Notes
... environments. In freshwater, the fish is hypotonic relative to its aqueous (watery) environment. Water is constantly flooding into the fish, and must be removed by the fish's excretory system. In seawater, the fish is now hypertonic or isotonic relative to the seawater, requiring conservation of bod ...
... environments. In freshwater, the fish is hypotonic relative to its aqueous (watery) environment. Water is constantly flooding into the fish, and must be removed by the fish's excretory system. In seawater, the fish is now hypertonic or isotonic relative to the seawater, requiring conservation of bod ...
Fish reproduction
Fish reproductive organs include testes and ovaries. In most species, gonads are paired organs of similar size, which can be partially or totally fused. There may also be a range of secondary organs that increase reproductive fitness. The genital papilla is a small, fleshy tube behind the anus in some fishes, from which the sperm or eggs are released; the sex of a fish often can be determined by the shape of its papilla.