REPRODUCTIVE BEHAVIOURS

Relationship behaviours are actions and patterns of interaction that occur between organisms of the same or different species, often for the purpose of reproduction, protection, or social organization.

Meaning of Courtship Behaviour:

Courtship behaviour consists of instinctive behaviour in response to certain external stimuli in animals. It refers to the series of actions or displays performed by animals to attract and secure a mate for reproduction. It usually occurs before mating and helps individuals identify and choose suitable partners of the same species. The behaviour is usually carried out in sequence and alternately performed by male and female organims. 

Importance of Courtship Behaviour

1. Species recognition: Ensures animals mate with members of their own species.
2. Mate selection: Allows individuals to choose the fittest or most suitable partner.
3. Synchronization: Helps both male and female become ready for mating at the same time.
4. Stimulation: Stimulates the reproductive organs to prepare for copulation.
5. Bond formation: Helps develop pair bonds in animals that mate for life (e.g., birds).

Types of Courtship Behaviour in Animals

The types or forms of courtship behaviour found in animals include: pairing, display, territoriality and seasonal migration. 

PAIRING

Pairing is the formation of a close association or bond between a male and a female animal for the purpose of mating and raising offspring. This pairing may be very brief, just for mating act only or last for a lifetime. 

Below are examples of pairing in selected animals:

🐸 1. Pairing in Frogs

• Pairing in frogs is temporary and happens only during the breeding season.
• The male frog croaks in order to attract and possibly excite the female.
• When the female approaches, the male climbs onto the back of the female in a position called amplexus, holding her firmly with his forelimbs.
• This position allows the male to fertilize the eggs externally as the female lays them in water.
• After spawning, both the male and female separate and provide no parental care.

👉 Type of pairing: Temporary pairing.

🕊️ 2. Pairing in Pigeons

• Pigeons exhibit permanent pairing or monogamy.
• A male and a female form a lifelong bond and remain faithful to each other.
• Both parents take part in building the nest, incubating the eggs, and feeding the young (squabs).
• This close partnership ensures proper care and protection of the offspring.

👉 Type of pairing: Permanent pairing (Monogamous).

🐜 3. Pairing in Winged Termites

• During the nuptial flight, mature male and female winged termites (alates) leave their parent colony in large numbers.
• After the flight, each male pairs with a female, and they shed their wings.
• The pair searches for a suitable place to start a new colony, where they become the king and queen.
• They live together for life and continuously produce offspring to build the colony.

👉 Type of pairing: Permanent pairing (lifelong royal pair).

🐟 4. Pairing in Fish

• Pairing in fish varies with species.
• In most fishes (like tilapia), the pairing is temporary, lasting only for the spawning period.
• The male and female come together to release sperm and eggs into water for external fertilization.
• After fertilization, they separate, though some species (like cichlids) show temporary parental care by guarding eggs or fry.

👉 Type of pairing: Usually temporary pairing.

🦁 5. Pairing in Lions

• Lions show polygamous pairing, specifically polygyny — one male mates with several females in a pride.
• The dominant male protects the pride and mates with all the adult females.
• Females in the pride often care for their cubs together, showing cooperative behaviour.
  The bond between the male and females is not permanent; a new male may take over the pride.
  👉 Type of pairing: Polygamous pairing (Polygyny).

👨‍👩‍👧 6. Pairing in Humans

• Humans usually form monogamous pairing, where one man and one woman form a social and emotional bond (marriage).
• Pairing may be temporary or permanent, depending on culture or relationship values.
• The pair usually shares responsibilities such as raising children, providing care, and maintaining family bonds.
• Pairing in humans involves emotional, social, and sometimes spiritual commitment beyond reproduction.

👉 Type of pairing: Mostly monogamous (one male, one female).

DISPLAY

Display is a form of courtship behaviour in which an animal performs special movements, actions, or shows physical features (such as colours, dances, or postures) to attract a mate, defend territory, or show dominance.

It is usually carried out by the male to gain the attention of the female during courtship. Displays help animals of the same species recognize each other and prepare for mating.

Types of Display

There are several types of display in animals, depending on the purpose or form of expression: 

Examples of Display in Selected Animals

🦎 1. Agama Lizard

• The male agama lizard performs a visual display by nodding its head up and down and raising its brightly coloured head and throat.
• This display attracts females and warns other males to stay away from its territory.
• The female lizard curves her back and lifts her tail vertically.
• The male then wags his tail, nods his head, grips her by the neck and pushes his tail under her body so that their cloacas can come in contact for copulation to take place.

👉 Type of display: Visual and territorial.

🐦 2. Birds

• Many male birds perform courtship dances or spread their feathers to impress females.
• In domestic fowls, the male fowl (cock)dances towards the female (hen). The cock lowers the wing on the side away from the hen and dances in a staggering manner towards the hen, beating the lowered wing against the body as it moves. The hen runs away if it is not ready for courtship. If ready for courtship, the cock chases the hen, overtakes her, mounts on her back and pecks on her head while it stoops down and raises her tail feather, exposing the cloaca. Mating then takes place.
• Some birds, like the peacock, spread their colourful tail feathers attracting the female (peahen) for mating.
• Others, like weaver birds, sing or build beautiful nests.

👉 Type of display: Visual and auditory.

🦋 3. Butterfly

• Male butterflies perform colour and flight displays to attract females.
• They may fly in circles around females and show off their bright wing colours during courtship.

👉 Type of display: Visual.

👨‍👩‍👧 4. Human Beings

• Humans also engage in display behaviour through appearance, speech, dance, and gestures to attract attention or affection.
• Dressing neatly, smiling, or showing special talents are human forms of social and emotional display.

👉 Type of display: Visual and social.

TERRITORIALITY

Territoriality is the behaviour shown by animals in which they occupy, defend, and control a particular area (territory) against intrusion by others of the same species. The area defended is called a territory, and it usually contains resources such as food, shelter, nesting sites, or mating partners.

Animals that exhibit territoriality use various signals, displays, or aggressive behaviours to mark and protect their territories. In most cases, the males establish territories prior to mating. 

They may mark out their areas by scent markers such as urine or by patrolling along the boundaries. Intruding males are chased away by their threat display. If a fight occurs, the males hardly hurt each other and the loser is allowed to run away. Females, however, may be allowed to enter the territory.  

Examples of Territoriality in Animals.

Importance of Territoriality

1. Ensures access to food, shelter, and mates.
2. Reduces overcrowding and competition among individuals.
3. Promotes successful breeding by keeping rivals away.
4. Helps maintain order within animal populations.
    

SEASONAL MIGRATION

Seasonal migration is the regular movement of animals from one place to another at a particular time or season of the year, usually in response to changes in weather, food availability, or breeding conditions. After a period, the animals often return to their original location when conditions become favourable again.

It can be said to be the periodic or cyclical movement of animals between two or more regions to ensure survival, feeding, or reproduction.

Reasons for Seasonal Migration

1. Search for food and water during dry or cold seasons.
2. Escape from harsh weather (extreme cold, heat, or drought).
3. Reproduction or breeding in safer or more suitable areas.
4. Avoidance of predators or diseases.
5. Better living conditions for raising young ones.

Examples of Seasonal Migration

Importance of Seasonal Migration

1. Ensures continuous access to food and water.
2. Allows successful breeding in suitable environments.
3. Helps animals avoid extreme weather conditions.
4. Promotes survival of species by reducing competition.
5. Assists in population balance and ecosystem stability.