Midterm Two Flashcards
Urodela Class
Ampibia
Urodela (2)
Salamanders and Newts
NS Species (5)
Red-backed Salamander Yellow-spotted Salamander Blue-Spotted Salamander Four-Toed Salamander Red-Spotted Newt
Urodela Genus (1)
Plethodon
Plethodon Common name
Woodland salamanders
Plethodon morphs: Types (3)
Red back (striped) Lead back (non-striped) Erythristic (all red)
Red back Plethodon morph: habitat + Anti-predatory behaviour (3)
Decidious wood
Immobility when threat from predators
lower stress levels in this morph
Lead back Plethodon morph: habitat + Anti-predatory behaviour
Coniferous woods
Runs away from threat
High stress in this morph
Erythristic Plethodon morph: habitat + Anti-predatory behaviour
Uncommon Deciduous woods (maples mostly
Urodela Development (2)
Direct development
Brooding
Urodela Direct Development (2)
no larval stage
Hatch into small salamanders
Urodela Brooding (2)
Mother protects eggs from others
Consume the dead eggs
Amphibian parental care: Modes (6)
Egg attendance Egg transport Tadpole attendance Tadpole transport Tadpole feeding Internal gestation in oviduct
Amphibian Reproduction (3)
4 - 17 eggs
Laid may to june
Hatch August or September
Urodela Territorial behaviour (2)
Scent mark with pheromones
Actively defend territories
Urodela Olfaction (2)
Nasolabial groove
Nose-tapping response
Testudines (3)
Turtles & tortoises
Aquatic lifestyle (mostly)
Only turtles in NS
Testudines features: Hibernation (4)
Hibernate under water
Stable temperature of 4C
October to April
Active: Mid-April - mid-October
Testudines features: sex determination (2)
Temperature dependent
Exception: Wood Turtle
Testudines features: Maturation (3)
extended for most turtles
Over a decade
Long living
NS Testudines species’ (4)
Painted
Snapping
Blanding’s
Wood
Eastern Painted Turtle: scientific name + size + status
Chrysemys picta picta
10 - 25 cm
Not Endangered
Painted Turtle: Canadian Sub-species (3)
Eastern: yellow plastron
Midland: Yellow with dark central pattern
Western: Yellow and red markings on plastron
Painted Turtle: Temperature
15C - 20C
Painted Turtle: nesting (3)
5 - 20 egs
may - july
can have 2 clutches in one season
Painted Turtle: Sex (2)
30C incubation + = females
lower temps = males
Painted Turtle: maturity (2)
Males: 8 years
Females: 12 - 15 years
Snapping Turtle: Scientific name + size (3)
Chelydra serpentina serpentina
Males: 47cms
Females 35 cm
Snapping Turtles: distribution
Maritimes to Saskatchewan
Snapping Turtles: maturity
15 years
Snapping Turtles: Nesting
25 - 50 eggs
late spring lay
Early fall hatch
Snapping Turtles: Sex determination
warm or cool: females
Intermediate: Males
Blandings Turtle: Name + Size + status
Emtdoidea Blandingii
18 - 26 cm
Extremely endangered
Blandings Turtle: physical characteristics (2)
Yellow spots on shell
Yellow chin/ throat
Blandings Turtle: distribution
Quebed, Ontario, NS
Blandings Turtle: Maturity
15 - 25 years
Blandings Turtle: Nesting (2)
15 eggs
laid mid to late june
Blandings Turtle: Sexing
Temp dependent
Wood Turtle: Size + name
Glyptemys insculpta
16 - 25 cm
Wood Turtle: Livng area + distribution
Riparian zone (very terrestrial) southern ontario and quebec, NB and NS
Wood Turtle: other characteristics (3)
Fast
Diurnal but hunts at night
Most terrestrial in NS, but still hibernates in water
Wood Turtle: Maturity
18 years
Wood Turtle: nesting (2)
Mate in last spring to fall
lay up to 20 eggs in June
Wood Turtle: Longevity (2)
40 years in wild
58 in captivity
Wood Turtle: sexual dimorphism (4)
minor
males have concave plastrons
female plastron is flat
Males have longer tails, longer claws, more colour
Wood Turtle: Worm Stomping (2)
make fake rain by stomping feet
Causing worms to go to surface
Wood Turtle: seasonal activity patterns (2)
based on sun and ground temperature because ectothermic
Wood Turtle: diet (6)
Mushroom Inverts berries moss grass carrion
Wood Turtle: Cause for decline (5)
illegal pet trade Road kill Agricultural deaths (blades low) Loss of habitat Habitat fragmentation
Atlantics Kemp’s Ridley Turtle: Name + status + size
Lepidochelys kempi
Endangered (most of all sea turtles)
35 - 75 cm
Atlanti logger head: Name + size
Caretta caretta caretta
85 cm to 1.2m
Atlantic Leatherback Turtle: name + size
Dermochelys coriacea coriacea
1.3 to 2.4 M
Aggression in Dogs: Reasons (4)
Fearful/ anxiety
Protection of resources
Frustration
Pain
Aggression in Dogs: signs (4)
Perked up ears
Tail up
weight on front feet
Waning eye (see the white portion of eye)
fear in Dogs: signs (9)
Tuck tail ears down head down sniffing ground weight on back legs Lift paw lick lips look away eyes closed Yawn
Sexual Selection: Use (2)
Establish best genes
Determine Quality of genes
Types sexual selection (2)
Inter-sexual
Intra-sexual
Intrasexual selection
Males or females compete with each other
Intersexual Selection (3)
Males or females choose their mates
Males often compete
Females often choose
NOT ALWAYS TRUE
Sexual Selection from Darwin: reasons for choice (3)
Maternal Care:
Limited number of ova
Child bearing is costly
Lactation is costly
Intrasexual Selection: territories and birds (2)
Larger territories = more fit
But trade-off to get territory
Leave early to get territory (but have to live in the cold)
Intrasexual Selection: Competition after mating (Examples) - 2
Lions: new pride leader = kill cubs
Mice: Bruce Effect (pheromones of new males will block the effect of female pregnancy)
Intrasexual Selection: Male-Male Competition (4)
Androgen levels higher = aggression + Sex = often helps
comes down to 3 things
aggression
sperm competition
Kleptogamy (sneaking)
Intrasexual Selection: paternal care
Only when good chance/ guaranteed to be the father
Intrasexual Selection: Wood Frogs (4)
Northern Quebec
first to vocalize in spring
sexual dimorphism (females with bigger ear membranes)
conduct kleptogamy/ sneak mating (hide next to singing males and steal females)
Sexual Selection: Independently of competition
- Males evaluate/ assess the competition (may not even compete if no chance)
- Females evaluate/ assess competition too
- Male and female evaluate each other to see what choices are
K-Selected Species: Characteristics + Example:
Environment Climate Body size Development speed Longevity Offspring quality/ type Reproduction strategy Offspring quality Parental care Parental investment in young Mortality Infraspecific competition Territory
Stable environment Constant/ predictable climate Large bodies Slow Development Long life span precocial Low number of offspring Extensive care High investment Low mortality High competition There is territory
Ex. Elephants
R-Selected species + example
Environment Climate Body size Development speed Longevity Offspring quality/ type Reproduction strategy Offspring quality Parental care Parental investment in young Mortality Infraspecific competition Territory
Opportunistic species
Unstable environs Variable climates Small bodies Rapid Development Short life span Often Altricial babies Reproduce alot minimal care low investment high mortality low competition rarely territorial
Ex. Rodents (often, some exceptions)
K - Selection: Parental care COnt. (2)
Long dependency when scarce or low food
Primate have longest dependency
Reproductive success (3)
# born # weaned # available for mating
Sexual Selection : Sexual Priorities (Male vs. Female)
Males: How many females that they can inseminate
Females: Limited by number of eggs you have (much larger constraint
Sexual Selection: assumptions (3)
Recognize your own species/ sub-species
Avoidance of inbreeding (ie. recognition key)
ID good genes based on phenotypes
Sexual Selection: Conflicts with this form of selection (2)
What each sex wants: Does it mean they are actually fit for survival
Investment is not even between sexes (females often invest more)
Epigametic Sexual Characteristic
Secondary characteristics that influence mates choice
Epigametic Sexual Characteristic: reason (2)
- To advertise sex
- Shows health of endocrine system (better look = more healthy)
Epigametic Sexual Characteristic: Peacock (2)
Better tail = more healthy
- Missing feathers = attacked (cant get away)
- May be sick
Epigametic Sexual Characteristic: Mainland Moose (2)
- parasites are hurting the horns of the organisms
- Sexual selection is hurting reproduciton because they dont want the men with shit horns
Epigametic Sexual Characteristic: In all mating systems? (2)
- Often occurs when sexual dimorphism occurs
- Often in non-monogamous species (polygamous)
Dimorphism in Primates (2)
- Often strong (some do not have it)
- males have dramatic sexual characteristics
Sexual Selection: Direct Benefit Theory (5)
- Females are choosy because they have more to lose
- Females want best genes to best have chance of having more success
- Males must sell self using best phenotypes
- Males are mostly average but it is a standard distribution (some better, some worse)
- Males must bring direct benefits ( presents, etc…)
Direct Benefit Theory: Scorpion Flies
- extended phenotype used
- Build a shelter for the females
Good Gene Theory (2)
-good genes = better mate
Indirect benefit theory
-best genotypes are translated into the best phenotypes