Download presentation
Presentation is loading. Please wait.
Published byClarissa Robbins Modified over 9 years ago
1
AG-WL-4
2
What are some important biological process to wildlife reproduction and survival? What are the significance of each?
3
Assimilation Process of changing food substances Growth Process of increasing in size Need balance of nutrients to sustain growth Nutrient deficiency may cause disease, stunted maturity, and death Repair Replacement of worn or damaged parts
4
The study of form, shape, and appearance Anatomy helps determine how an animal survives in their environment
7
Refers to how animals move Swimming Walking Flying Running
8
Study of how the parts of an anatomy function Systems include: Skeletal Digestive Respiratory Muscular Circulatory Nervous Excretory Reproductive
9
Skeletal System Consists of bones giving animals shape Protects organs Systems can be internal or external (exoskeleton) Vertebrates are animals with backbones
11
Digestive System Decomposes food Two major types Ruminant Animals have stomach that is divided into four categories Omasum Reticulum Rumen Abomasum Monogastric Simple stomach with only one compartment
14
Respiratory System Animals take in oxygen and gives off carbon dioxide Land species have lungs Water species have gills
15
Muscular System Provides support and allows for movement Attached to skeletal system
16
Moves blood through an organism Main organ is the heart Works closely with the respiratory system
17
Excretory System Removes waste Urine Feces Perspiration
18
Nervous System Connects brain activity with muscles Main part is the spinal cord
20
Reproductive System Enables organism to produce an offspring Can be sexual or asexual Sexual Requires union of sperm and an egg Asexual Cloning exact offspring
21
May occur internally or externally, depends on species. Most large animals reproduce by internal mating. Sexual union between male and female, known as copulation. Once egg is fertilized by sperm, female carry young in their uterus (Gestation). After parturition (birth) the young receive nourishment from its mother’s milk Birds lay eggs and incubate them. Fish, reptiles and amphibians lay eggs and that are externally fertilized.
22
Reflects the current status of a wildlife population Indicative of: Habitat quality Health factors Behavioral conditions
23
Used to estimate future declines or increases in the number of animals, and to recommend the appropriate management of the animal
24
Embryonic Development Fetal measurements: Use measurement devices to determine weeks/days to parturition Candling: process by which a light source is utilized to illuminate the contents of an egg to determine fertility or maturation Flotation: A fresh egg will sink. A partially developed embryo will float with the blunt end uppermost. A decomposing egg will float on its side.
25
Morphological Features Size and Weight of the animals. Hind foot lengths. Pelt Primeness Development and wear of teeth Development and wear of feathers Development of Genitalia
26
Genitalia Secondary Sex Characteristics Antler Development Spur Development Plumage Differences Droppings Courtship Behavior and Urination Postures
27
Sex Physical Characteristics (Body Size / Snout Length) Does Fawn Buck Age Antler Characteristics Ear Width Ear Length Number of Antler Points
28
Hen – Female Feathers on Crown of Head Foot generally less than 4.5 inches Droppings are curled Beards and spurs are absent Breast feathers are generally brown or buff-tipped Jake – Juvenile Male Gobbler (A.K.A – Tom) – Adult Male Feathers to base of head Beard is evident Foot is greater than 4.5 inches Droppings are J-shaped Spur is present Breast feathers are generally black tipped
29
Determine Age by: Spurs (Males) 1 year1/2” or less 2 years1/2” to 7/8” 3 years7/8” to 1” 4+ years1” + Beards 1 year3 – 5 inches 2 years6 – 9 inches 3+ years10 inches + Wings Juvenile: 9 th and 10 th primaries pointed and dark tipped, no barring near tip Irregular contour of tail feathers Adult: 9 th and 10 th primaries more rounded with white barring extending to tip Regular contour of tail feathers
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.