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Plankton. The Unnoticed Residents of all Water Habitats.
Plankton. The Unnoticed Residents of all Water Habitats.

... of their body when divided vertically. They have a triangle shaped head with two eyes, which can detect changes in light in their environment. They have an acoelomate body, meaning they have no internal cavities to hold their organs, thus having a very simple nervous system. Planaria have no circula ...
Bull Trout Salvelinus confluentus
Bull Trout Salvelinus confluentus

... subgroup of the salmon family (salmonids), which also includes the Dolly Varden, lake trout and Arctic char. Bull trout living in streams grow to about 4 pounds while those in lake or large river environments can weigh more than 20 pounds. Biologists distinguish char from other salmonids such as tro ...
The Deuterostomes
The Deuterostomes

... with the formation of new mouth and anal openings and a new orientation (mouth on the left and anus on the right) The left and right sides of the larvae undergo differential development, with the left side forming the oral surface and the right side forming the aboral surface ...
Cnidarians
Cnidarians

... 1. Jellyfish fact: Jellyfish have been around for more than 650 million years which means that they outdate the dinosaurs and the sharks. 2. Jellyfish fact: Different species of jellyfish can be found in all the worlds’ oceans. Jellyfish can even be found in freshwater. 3. Jellyfish fact: A species ...
RAT DISSECTION PHYLUM: Chordata
RAT DISSECTION PHYLUM: Chordata

... Observe the segments or METAMERES along its body. The advantages of SEGMENTATION include: 1) allowing different body sections to expand and contract independently 2). Duplication of body organs provides insurance against injury. WHICH END IS UP? Examine your earthworm and determine the ANTERIOR and ...
Vertebrates
Vertebrates

... scientific observation you made over the break. I will only call on 3 of you to share ...
Chordata (Fish)
Chordata (Fish)

... them sink if they stop swimming • Actinopterygii: includes 96% of all fish species • Actinistia: Still alive, 2 species have been found • Dipnoi: In dry periods, they burrow into the mud and go into a fish hibernation Colin, Tyler ...
Intraspecific Morphological Variation in Two Common Marine Fish
Intraspecific Morphological Variation in Two Common Marine Fish

... of P. laniarius and A. inodorus caught by commercial fishermen in a small-scale artisanal fishery in South Africa over a two month period. All fish were caught within about a 20 km radius from the East London Harbor in Eastern Cape, South Africa. We assume, based on the relatively close proximity of ...
Octopus - debchelsblake
Octopus - debchelsblake

... plasma instead of being carried within red blood cells ...
Name That Fish
Name That Fish

... only fish species with a heterocercal tail (the upper lobe larger than the lower lobe - like a shark’s tail). This separates it from all other Manitoba fish species. The next main branches of the fish “family tree” are based on whether a species has an adipose fin or not. Again, this is an obvious v ...
Population density modifies the ecological impacts of invasive species
Population density modifies the ecological impacts of invasive species

... As a proxy for primary productivity, we measured phytoplankton standing stock on the final day of the experiment by filtering a 0.5 l water sample from each mesocosm through GF/C filters before adding 5 ml of 90% acetone. After 24 h the samples were centrifuged and the supernatant was used for spect ...
Basic Freshwater Baits-
Basic Freshwater Baits-

... can be pulled through the water to capture minnows and sometimes crayfish. Store minnows in a minnow bucket using the same water from which they were bought or captured and use them as soon as possible. Minnow buckets are special buckets with an internal perforated container designed to hold minnow ...
What`s on the Menu?
What`s on the Menu?

... teeth and strong jaws are adapted to the way sharks live, hunt, and eat. Huge basking and whale sharks eat soft foods such as plankton and small fish; they have tiny teeth called gill rakers that filter all the seawater that comes into their mouths, separating the food (which is then swallowed) from ...
Aquatic Noise Pollution: Implications for Individuals, Populations
Aquatic Noise Pollution: Implications for Individuals, Populations

... "noise" and "invertebrate", or "reptile", or "fish", or "mammal". This search returned more than 2500 studies, each of which was screened. Those studies which do not address aquatic noise pollution have been omitted, leading to the inclusion of 134 studies. The effect of noise (“yes” or “no”) was as ...
Chapter 14 - COSEE Florida
Chapter 14 - COSEE Florida

... 5d. - Ocean biology provides many unique examples of life cycles, adaptations and important relationships among organisms (symbiosis, predator-prey dynamics and energy transfer) that do not occur on land. 5e. - The ocean is three-dimensional, offering vast living space and diverse habitats from the ...
Chapter 7 - Cnidarians
Chapter 7 - Cnidarians

... No brain, but they can respond to stimulus. ...
AP Biology
AP Biology

... What adaptations do birds have for flying? What kind of symmetry do all vertebrates have? Which vertebrates are ectothermic and which are endothermic?  Why must amphibians live near water?  What reproductive adaptations made mammals very successful?  What characteristics distinguish the 3 sub-gro ...
Ch31Animals
Ch31Animals

... What adaptations do birds have for flying? What kind of symmetry do all vertebrates have? Which vertebrates are ectothermic and which are endothermic?  Why must amphibians live near water?  What reproductive adaptations made mammals very successful?  What characteristics distinguish the 3 sub-gro ...
Animals
Animals

... What adaptations do birds have for flying? What kind of symmetry do all vertebrates have? Which vertebrates are ectothermic and which are endothermic?  Why must amphibians live near water?  What reproductive adaptations made mammals very successful?  What characteristics distinguish the 3 sub-gro ...
Jellyfish: “wonders in the deep”
Jellyfish: “wonders in the deep”

... the jellyfish’s delicate tissues. Consequently it is advisable to avoid contact with jellyfish because some species can produce painful stings or even death. A complex visual system Jellyfish have generally been considered to have no brain or central nervous system, and to have only light-sensitive ...
Select Stream Fishes of North Texas
Select Stream Fishes of North Texas

... There’s an art to it!!! ...
Cnidarians - cloudfront.net
Cnidarians - cloudfront.net

... (not a single organism •  Tentacles sting prey such as fish & humans •  Polyps in colony feed •  Has gas-filled air float ...
cnidarians
cnidarians

... cavity has single opening (serves as both mouth and anus) • Two tissue layers (diploblastic) • Outer epidermis and inner gastrodermis ...
Interactions among Organisms
Interactions among Organisms

... • Barnacles need a place to anchor. They must wait for food to come their way. Some barnacles hitch a ride on unsuspecting whales who deliver them to a food source. This does not effect the whale in any way. ...
Fishes I
Fishes I

... cord, pharyngeal pouches, post-anal tail. 2. Cartilaginous or bony endoskeleton with a backbone and vertebrae (except hagfish). 3. Well-developed nervous system with anterior brain and specialized receptors (nose, eyes, ears). 4. Closed circulatory system with 2 to 4 chambered heart and blood with h ...
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Fish intelligence



According to Culum Brown from Macquarie University, ""Fish are more intelligent than they appear. In many areas, such as memory, their cognitive powers match or exceed those of ‘higher’ vertebrates including non-human primates.""Fish hold records for the relative brain weights of vertebrates. Most vertebrate species have similar brain-to-body mass ratios. The deep sea bathypelagic bony-eared assfish, has the smallest ratio of all known vertebrates. At the other extreme, the electrogenic elephantnose fish, an African freshwater fish, has one of the largest brain-to-body weight ratios of all known vertebrates (slightly higher than humans) and the highest brain-to-body oxygen consumption ratio of all known vertebrates (three times that for humans).
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