Term
Iteraparous
(hint: majority of fishes) |
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Definition
| spawn multiple times during life |
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Term
Semalparous
(hint: salmon, eels, lampreys) |
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Definition
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Term
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Definition
| Oviparous, Viviparous, Ovoviviparous |
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Term
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Definition
lay eggs, no help from the mother.
(hint: ?) |
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Term
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Definition
have alot of help from theres parents.
(hint: Very over protective parents) |
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Term
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Definition
produce eggs but retain them inside the female body until hatching occurs
(Hint: like frogs) |
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Term
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Definition
(think sharks or whales)
*Slow growth
*Low fecundity
*Long gestation |
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Term
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Definition
(think fishes or frogs)
*Fast growth
*high fecundity
*Short gestation |
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Term
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Definition
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Term
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Definition
Eggs deposited to hatch later from case
-Extended (rapid release, > 15 month in case)
-<2mnths to >1 yr
(Examples. Hornshark, Port Jackson, zebrashark, catshark, swellshark, rays, skates) |
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Term
| Chondrichthyes Placental Viviparity |
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Definition
Eggs hatch inside mother and babies are fed by placenta
-Gestation < 6 mnths- 2 yrs
-Several young ( 4-100 )
(Examples: Bull, whitetip reef, lemon, blue, hammerhead, whale) |
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Term
| Chondricthyes aplacental viviparity (ovoviviparous) |
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Definition
-Eggs hatch inside mother
-Embryos protected during development
- No placenta to nourish pups
(Examples: Great white, sawsharks, cookiecutter, pelagic thresher, Greenland, pygmy, nurse, tiger, sandtiger,some batoids) |
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Term
| _____________ is a long villous extensions of the uterine epithelium secrete hydrotrpohe (ingested or absorbed by embryo) |
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Definition
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Term
| When the young eat eggs which continue to come down the track (bigeye thresher, shortfin mako, porbeagle) |
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Definition
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Term
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Definition
| (male or female; sex fixed at early age) |
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Term
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Definition
females change into males (more common)
(Hint: FtM) |
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Term
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Definition
males change into females
(Hint: looks like Andy and Adury male and female names) |
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Term
| one sex has multiple partners |
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Definition
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Term
| 1 female several males (rare) |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| fishes travel between salt and fresh water |
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Term
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Definition
| that travels between fresh and salt water, but not to breed |
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Term
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Definition
| Migrate within freshwater |
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Term
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Definition
| Migrate within freshwater |
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Term
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Definition
| continual increase in size & volume |
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Term
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Definition
| Morphology is drastically different in juveniles and adults |
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Term
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Definition
- Larger females produce large and more eggs
- Larger individuals are socially favored and can defend territory
- Larger fish can swim faster & father
- Greater choice of food item as a large individual
- Smaller range of predators |
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Term
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Definition
| Embryonic → Larval → Juvenile → Adult → Senescent |
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Term
| What are the dependents for spawning? |
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Definition
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Term
| Primary cue is _________, _________ is secondary |
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Definition
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Term
< 20 °C required for gonad development
> 22 – 24 °C inhibits spawning |
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Definition
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Term
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Definition
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Term
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Definition
| interval between 1st cell division and appearance of recognizable predecessors of organ systems (esp. neural plate). |
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Term
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Definition
| the point where fish becomes recognizable as a vertebrate and when the egg hatches. |
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Term
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Definition
| embryo uncurls, relies on yolk, and remains in same environment as 2 previous stages. |
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Term
| Other factors affecting ED? |
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Definition
*Light
*Dissolved Oxygen
*CO2
* Nitrogen
*Salinity |
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Term
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Definition
| Hatching; first ability to capture food |
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Term
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Definition
| Ends: Fish forms axial skeleton and loses embryonic median fin-fold . |
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Term
-Period of highest dispersal
-Period of highest mortality (starvation)
-Morphology often drastically different from adult (see Fig. 9.10)
-Most larvae initially carnivorous |
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Definition
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Term
| Juvenile period begins... |
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Definition
| organ systems and fin are fully developed. |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
| Senescent Period (within adult period) is... |
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Definition
| Growth has nearly stopped & Gonads degenerate and are not producing gametes |
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Term
Formula for Growth
I = M + G + E |
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Definition
I: Ingested energy
M: Metabolism
(energy required to break I down, maintenance and repair, movement)
G: Growth
E: Excreted |
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Term
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Definition
(hatchery, lab)
- Allows manipulation of many variables (Temp, DO, food, etc.)
- Can measure at anytime
- May not reflect natural condition accurately |
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Term
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Definition
- Clipped fins, cold brands, pigmented skin, fluorescent bones or scales from tetracycline immersion, tags.
- Allows estimates of growth rates of fishes in natural envir
- Recapture rate is typically only ~ 1% (limits use of costly technology) |
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Term
| Back calculating using ring on hard parts |
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Definition
Invasive: otolith, opercula bones, verterbrae
Noninvasive: scales, spines |
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Term
| When the young eat their siblings |
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Definition
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