Reproductive Organs
... Alveolus (pl. Alveoli) One of many flattened vesicles that form a more or less continuous layer beneath the cell membrane of ciliates and a few other protozoans. Ambulacrum (pl. Ambulacra) Groove, ridge, or double band of tube feet, radial canal, and associated body wall of echinoderms. Ametabolous ...
... Alveolus (pl. Alveoli) One of many flattened vesicles that form a more or less continuous layer beneath the cell membrane of ciliates and a few other protozoans. Ambulacrum (pl. Ambulacra) Groove, ridge, or double band of tube feet, radial canal, and associated body wall of echinoderms. Ametabolous ...
LECTURES FOR ZOO 1010—CHAPTER 1
... shipworms. Many snails serve as intermediate hosts for serious worm parasites. Form and Function: Body plan—The body plan of mollusks consists of a head-foot and a visceral mass. The head is the location of the feeding apparatus and the major sensory structures, such as photosensory receptors, inclu ...
... shipworms. Many snails serve as intermediate hosts for serious worm parasites. Form and Function: Body plan—The body plan of mollusks consists of a head-foot and a visceral mass. The head is the location of the feeding apparatus and the major sensory structures, such as photosensory receptors, inclu ...
Miller Harley Sample Chapter 15
... of two pairs of appendages on each apparent trunk segment. Each segment is actually the fusion of two segments. Fusion is also reflected internally by two ganglia, two pairs of ostia, and two pairs of tracheal trunks per apparent segment. Most millipedes are round in cross section, although some are ...
... of two pairs of appendages on each apparent trunk segment. Each segment is actually the fusion of two segments. Fusion is also reflected internally by two ganglia, two pairs of ostia, and two pairs of tracheal trunks per apparent segment. Most millipedes are round in cross section, although some are ...
ID_3873_Populatio
... Protozoa can be divided into five groups: amoebae, intestinal flagellates, blood and tissue flagellates, multicellular flagellates, ciliates amoebae, intestinal flagellates, blood and tissue flagellates, sporozoa, ciliates multicellular flagellates, unicellular flagellates, ciliates, sporozoa coccid ...
... Protozoa can be divided into five groups: amoebae, intestinal flagellates, blood and tissue flagellates, multicellular flagellates, ciliates amoebae, intestinal flagellates, blood and tissue flagellates, sporozoa, ciliates multicellular flagellates, unicellular flagellates, ciliates, sporozoa coccid ...
Vertebrate Origins 2
... fraction of what was once there. Not all basal deuterostomes were asymmetrical or pentaradial. The calcichordata were bilaterally symmetrical, and may in fact be specialized echinoderms. ...
... fraction of what was once there. Not all basal deuterostomes were asymmetrical or pentaradial. The calcichordata were bilaterally symmetrical, and may in fact be specialized echinoderms. ...
respiratory or ventilatory system
... The respiratory organs of terrestrial insects consist of tracheal tubes with external SUGGESTED FUNCTIONS FOR spiracular valves that control gas exchange. Despite their relatively high metabolic rate, many insects have highly discontinuous patterns of gas exchange, DISCONTINUOUS BREATHING including ...
... The respiratory organs of terrestrial insects consist of tracheal tubes with external SUGGESTED FUNCTIONS FOR spiracular valves that control gas exchange. Despite their relatively high metabolic rate, many insects have highly discontinuous patterns of gas exchange, DISCONTINUOUS BREATHING including ...
Biological Monitoring
... Aquatic insects may go through one of two kinds of development or metamorphosis. Those that go through complete metamorphosis undergo four stages of development: egg, larva, pupa, and adult. They lay their eggs in water; eggs then hatch into larvae that feed and grow in the water. (These larval inse ...
... Aquatic insects may go through one of two kinds of development or metamorphosis. Those that go through complete metamorphosis undergo four stages of development: egg, larva, pupa, and adult. They lay their eggs in water; eggs then hatch into larvae that feed and grow in the water. (These larval inse ...
Chapter 27: Mollusks and Annelids
... o Contains the _________________________, most of which live in tropical countries o Freshwater organisms that exist as external ________________________, drinking blood and body fluids from their host o All leeches have powerful suckers at both ends of their bodies o These suckers are used to attac ...
... o Contains the _________________________, most of which live in tropical countries o Freshwater organisms that exist as external ________________________, drinking blood and body fluids from their host o All leeches have powerful suckers at both ends of their bodies o These suckers are used to attac ...
Fishes and Amphibians
... skin, while toads have bumpy, dry skin. Both need to be near water for reproduction. However, toads generally live farther from water than do frogs. Unlike frogs, toads have glands near the back of their heads. These glands release a foul-tasting poison to discourage predators from eating them. ...
... skin, while toads have bumpy, dry skin. Both need to be near water for reproduction. However, toads generally live farther from water than do frogs. Unlike frogs, toads have glands near the back of their heads. These glands release a foul-tasting poison to discourage predators from eating them. ...
Identifying Caterpillars in Field, Forage, and Horticultural Crops
... crops and also provides instructions for preserving caterpillar specimens so they can be identified. Caterpillars are the immature feeding stage, or larvae, of butterflies and moths. Caterpillars transform into adults during an intermediate stage called the pupal stage. Adult moths or butterflies ma ...
... crops and also provides instructions for preserving caterpillar specimens so they can be identified. Caterpillars are the immature feeding stage, or larvae, of butterflies and moths. Caterpillars transform into adults during an intermediate stage called the pupal stage. Adult moths or butterflies ma ...
2. Structure and Function 2.1 External Anatomy 10 2.1.1 Integument
... other highly specialised organs and tissues. Their senses are in many regards much more outstanding, subtle and sensitive than the senses of most other animals. Insects develop from an egg cell via several larval instars, appearing to be completely different life forms from the adults at the end of ...
... other highly specialised organs and tissues. Their senses are in many regards much more outstanding, subtle and sensitive than the senses of most other animals. Insects develop from an egg cell via several larval instars, appearing to be completely different life forms from the adults at the end of ...
Abalone - Two Oceans Aquarium
... many sets of eggs, totalling more than 20 000 during the summer spawning. When released into the sea, the eggs sink hundreds of metres to depths where few predators dwell. There they hatch into nauplii larvae which subsist initially on the yolk from the eggs. Later they swim towards the surface to f ...
... many sets of eggs, totalling more than 20 000 during the summer spawning. When released into the sea, the eggs sink hundreds of metres to depths where few predators dwell. There they hatch into nauplii larvae which subsist initially on the yolk from the eggs. Later they swim towards the surface to f ...
What Is a Flatworm?
... • If the embryos reach water, they develop into swimming larvae and infect freshwater snails, the intermediate host • An intermediate host is an organism in which a parasite reproduces asexually • Larvae that result from asexual reproduction are eventually released to begin the cycle again ...
... • If the embryos reach water, they develop into swimming larvae and infect freshwater snails, the intermediate host • An intermediate host is an organism in which a parasite reproduces asexually • Larvae that result from asexual reproduction are eventually released to begin the cycle again ...
Insect Biology and Management Resource Manual
... feeding or a low number of insects causing damage. In some cases insect feeding is actually beneficial to the plant. In the process of gathering nectar and pollen, honey bees and other wild pollinators fertilize flowering plants. Plant feeders that feed on dead and dying plant tissue are an importan ...
... feeding or a low number of insects causing damage. In some cases insect feeding is actually beneficial to the plant. In the process of gathering nectar and pollen, honey bees and other wild pollinators fertilize flowering plants. Plant feeders that feed on dead and dying plant tissue are an importan ...
Introduction to Entomology - UNL, Go URL
... Other parts of an insect life cycle include diapause and mating. Diapause is similar to hibernation and is induced by hormones and changes in the environment. Depending on the species, diapause will occur at a specific life stage, such as the egg, larval, nymphal, pupal, or adult stage. Some species ...
... Other parts of an insect life cycle include diapause and mating. Diapause is similar to hibernation and is induced by hormones and changes in the environment. Depending on the species, diapause will occur at a specific life stage, such as the egg, larval, nymphal, pupal, or adult stage. Some species ...
Lesson Overview - Southgate Schools
... Many aquatic invertebrates have a larval stage, which looks nothing like an adult. These larvae often swim or drift in open water before undergoing metamorphosis and assuming their adult form. Members of some phyla, such as cnidarians, have a single larval stage. Other groups, such as crustaceans, m ...
... Many aquatic invertebrates have a larval stage, which looks nothing like an adult. These larvae often swim or drift in open water before undergoing metamorphosis and assuming their adult form. Members of some phyla, such as cnidarians, have a single larval stage. Other groups, such as crustaceans, m ...
28.1 Evolution of Animals
... The skeleton of a sponge prevents the body from collapsing. All sponges have fibers of spongin, a modified form of collagen; a bath sponge is the dried spongin skeleton from which all living tissue has been removed. Today, however, commercial “sponges” are usually synthetic. Typically, the endoskele ...
... The skeleton of a sponge prevents the body from collapsing. All sponges have fibers of spongin, a modified form of collagen; a bath sponge is the dried spongin skeleton from which all living tissue has been removed. Today, however, commercial “sponges” are usually synthetic. Typically, the endoskele ...
File
... the Nile delta, South and Central America, and the tropical regions of Asia including southern China and the Pacific Hosts – Humans Infection mode – These filarial worms are spread by a mosquito vector and affects over 120 million people ...
... the Nile delta, South and Central America, and the tropical regions of Asia including southern China and the Pacific Hosts – Humans Infection mode – These filarial worms are spread by a mosquito vector and affects over 120 million people ...
Unique Characteristics
... the Nile delta, South and Central America, and the tropical regions of Asia including southern China and the Pacific Hosts – Humans Infection mode – These filarial worms are spread by a mosquito vector and affects over 120 million people ...
... the Nile delta, South and Central America, and the tropical regions of Asia including southern China and the Pacific Hosts – Humans Infection mode – These filarial worms are spread by a mosquito vector and affects over 120 million people ...
Invertebrate Identification Guide
... predators of invertebrates, while some eat dead plants and animals – even dung! Love beetles? Why not join the UK Ladybird ...
... predators of invertebrates, while some eat dead plants and animals – even dung! Love beetles? Why not join the UK Ladybird ...
145 CHAPTER SUMMARY
... fibers, you would be much more flexible. Although there is some truth to this statement, such a condition would present serious problems. Why? 4. In adults, over 90% of all cancers are either adenomas (adenocarcinomas) or carcinomas. (See Related Clinical Terms for this chapter.) In fact, cancers of ...
... fibers, you would be much more flexible. Although there is some truth to this statement, such a condition would present serious problems. Why? 4. In adults, over 90% of all cancers are either adenomas (adenocarcinomas) or carcinomas. (See Related Clinical Terms for this chapter.) In fact, cancers of ...
lecture_19_Feb 26_nematodes1
... The Mermithidae are an unusual order of entomophilic nematodes that parasitize a wide range of insects. They are unusual because the adult stage is the one which is free-living and the larval stages are parasitic. These worms gain entry into the host either by the insect eating the nematode eggs, ...
... The Mermithidae are an unusual order of entomophilic nematodes that parasitize a wide range of insects. They are unusual because the adult stage is the one which is free-living and the larval stages are parasitic. These worms gain entry into the host either by the insect eating the nematode eggs, ...
Amphibians - Formatted
... sometimes present but scales are mostly absent. 5. Mouth is usually large, with small teeth in either upper or both jaws. Teeth are bicuspid and pedicellate. In some forms, teeth are completely absent. The nostrils open into the anterior part of the mouth cavity. 6. Skeleton is mostly bony, with var ...
... sometimes present but scales are mostly absent. 5. Mouth is usually large, with small teeth in either upper or both jaws. Teeth are bicuspid and pedicellate. In some forms, teeth are completely absent. The nostrils open into the anterior part of the mouth cavity. 6. Skeleton is mostly bony, with var ...
Metamorphosis
... Metamorphosis is associated with adaptive changes in the way an organism interacts with its environment. For example, adult amphibians often eat very different foods than their larvae. Thus, adults and larvae do not compete for food. A second example of the adaptive significance of metamorphosis is ...
... Metamorphosis is associated with adaptive changes in the way an organism interacts with its environment. For example, adult amphibians often eat very different foods than their larvae. Thus, adults and larvae do not compete for food. A second example of the adaptive significance of metamorphosis is ...
Cochliomyia
Cochliomyia is a genus in the family Calliphoridae, known as blowflies, in the order Diptera. Cochliomyia is commonly referred to as the New World screwworm fly. The four species in this genus are: C. macellaria, C. hominivorax, C. aldrichi, and C. minima.C. hominivorax is known as the primary screwworm because its larvae produce myiasis and feed on living tissue. This feeding causes deep, pocket-like lesions in the skin, which can be very damaging to the animal host. C. macellaria is known as the secondary screwworm because its larvae produce myiasis, but feed only on necrotic tissue. This species is forensically important because it is often associated with dead bodies and carcasses. Both C. hominivorax and C. macellaria thrive in warm, tropical areas.