Re Production Collection (page 8)

Common frogs spawning
Common frogs (Rana temporaria) spawning in a moorland pond. The common frog is found throughout Europe. The breeding season begins in March and it hibernates during the winter

Southern elephant seal roaring
Male southern elephant seal (Mirounga leonina) roaring. Mature bulls produce this guttural growl to challenge other males during dominance battles

Cleavage in frog eggs. The division of cells in an early embryo is called cleavage. These cells will eventually develop into tadpoles and then into frogs

Zony (Equus sp.). A zony is the infertile offspring of a zebra stallion and a pony mare. Photographed at De Hoop Nature Reserve, South Africa

Whale song. Waveform traces of a short burst of the sounds made by a humpback whale (Megaptera novaeangliae). These sounds are produced by moving air back and forth through body passages

Emperor penguins sheltering chicks
Emperor penguins (Aptenodytes forsteri) sheltering three-week-old chicks. The males shelter the chicks against the cold by holding them on their feet and covering them with a fold of skin

African buffaloes (Syncerus caffer). Bull (male) African buffalo checking the oestrus state of a cow (female). Cows, which become sexually mature at 5 years of age

Southern elephant seals
Southern elephant seal males (Mirounga leonina) sparring. Elephant seals are named for their snout or proboscis, which becomes enlarged during the breeding season

Bean aphid (Aphis fabae), artwork. This is a wingless female adult. It is able to reproduce parthenogentically (asexual reproduction), giving birth to pregnant offspring

Male mosquito, SEM
Male mosquito. Coloured scanning electron micrograph (SEM) of the head of an unidentified male mosquito (family Culicidae)

Common darter dragonflies (Sympetrum striolatum) mating on a flower. During mating the male dragonfly grasps the females head to pull her into the wheel position in order to copulate

Dead-leaf bush crickets mating
Dead-leaf bush crickets (Typophyllum sp.) mating on a leaf in the rainforest. The smaller male has just transferred a large white sperm packet, known as a spermatophore to the larger female

Flies mating on a grass stalk. The smaller male has mounted the female

May bugs mating
May bugs (Melolontha melolontha) mating. A second male (top) is competing for the female (bottom). The beetles are attracted to light at night and were caught in a light trap put out to catch moths

Mosquito larvae

Fly glandular organ, SEM
Fly glandular organ. Coloured scanning electron micrograph (SEM) of a glandular organ on a March fly (family Bibionidae). This organ is found on the rear of the fly

Bee and flower, computer artwork. The bee is using its wings to hover next to a flower (left). It will use its proboscis to drink nectar from the flower

Mint leaf beetles mating
Mint leaf beetles (Chrysolina menthastri) mating on a leaf

Lily beetles mating
Lily beetles (Lilioceris lilii) mating on a lily leaf (Lilium Casablanca ). This pest was originally from Asia. It was first recorded in the UK in 1940, in southern England

Hairy dragonflies mating
Hairy dragonflies (Brachytron pratense) mating. In order to mate, the male grasps the females head with the claspers on the end of his abdomen

Mating dead-leaf bush crickets
Dead-leaf bush crickets (Typophyllum sp.) mating on a leaf in the rainforest. The male is the smaller of the pair

Dock leaf beetles mating. Dock leaf beetles (Gastrophysa viridula) mating on a leaf of the broad-leaved dock plant (Rumex obtusifolius)

Poplar leaf beetles mating
Poplar beetles (Chrysomela populi) mating. Photographed in Braunton Burrows, Devon, UK

Honey bee on New England aster flower
Honey bee (Apis melifera) on New England aster flower (Symphyotrichum novaeangliae)

Green tiger beetles mating
Green tiger beetles (Cicindela campestris) mating on moorland. The male is on top. Photographed in the UK

Flightless dung beetle with dung ball
Flightless dung beetle (Scarabaeus rugosus) on top of a dung ball. The dung beetles that roll dung into balls, known as rollers

Bumblebees pollinating a sunflower
Bumblebees (Bombus sp.) pollinating a sunflower. As the bee feeds on nectar in the flower, pollen from the anthers become attached to it. Pollen grains are the male sex cells of a flowering plant

Blue-tailed damselfly
Blue-tailed damselflies (Ischnura elegans) mating on a plant stem. During mating the male damselfly grasps the females head to pull her into the wheel position in order to copulate

Sockeye salmon spawning
Salmon spawning. Sockeye salmon (Oncorhynchus nerka) in their spawning phase in a river. Dead salmon are seen in the foreground

Mating mandarinfish (Synchiropus picturatus). This fish is also called the picturesque dragonet. It is found in the Indo-West Pacific regions and feeds on small benthic invertebrates

Three spot dascyllus fish
Three spot dascyllus. Two three spot dascyllus fish (Dascyllus trimaculatus) on a coral reef. The male (right) is protecting the female (left) as she lays her eggs

Ocellaris anemonefish laying eggs
Ocellaris anemonefish (Amphiprion ocellaris) laying eggs. The process of egg laying lasts around half an hour. The female lays between 100- 1000 eggs

Male sergeant major (Abudefduf saxatilis) guarding a females eggs. This fish is usually silver with black bars, but the colour of the male changes to blue when it is guarding the eggs

Biofuel research. Gloved hands holding Jatropha curcas seeds. Oil extracted from the seeds of Jatropha plants is used as a biofuel, and can be further refined into biodiesel

LM of normal human sperm

4-cell embryo embryo, artwork
4-cell embryo. Image 3 of 4. Computer model representing 4 daughter cells. The development of an embryo is called embryogenesis

LM of human sperm fertilising an egg
Sperm fertilising egg. Light micrograph of a human egg with sperm at its surface attempting to penetrate and fertilise it

Egg cell, SEM
Egg cell. Coloured scanning electron micrograph (SEM) of a freeze-fracture of a developing egg cell in a secondary follicle of the ovary. At centre is the rounded egg cell or secondary oocyte (red)

Coloured SEM of egg cell in secondary follicle

Sperm and egg
Fertilisation. Computer artwork of a human sperm approaching an egg (ovum, top left) just before the process of fertilisation

Blood vessels in a frog ovary, SEM
Blood vessels in the ovary of a female frog, coloured scanning electron micrograph (SEM). Frogs produce hundreds of eggs, which are expelled and fertilised in the water

Human embryo for sale, conceptual computer artwork. Human embryos are fertilised eggs in their earliest stage of development; less than 8 weeks old

False-colour SEM of sperm in the uterine cavity

Coloured SEM of sperm fertilising an egg
Coloured scanning electron micrograph of sperm (yellow) fertilising an egg cell (round and pink). At top centre three polar bodies (purple and blue) are seen

Frog embryo, light micrograph
Frog embryo. Light micrograph of a frog embryo at the blastula stage. This stage in the embryos development is produced by the cleavage (cell division) of a fertilised ovum (egg cell)

Gene transfer in fertilisation

Computer artwork of human sperm fertilising an egg
Sperm fertilising egg. Computer illustration of sperm cells (white) approaching a human egg (pink), before one of the sperm fertilises it

Coloured SEM of sperm on egg during fertilisation
Fertilisation. Coloured scanning electron micro- graph (SEM) of sperm on the surface of a human egg (ovum) during fertilisation. The egg has a spongy protective surface

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Exploring the wonders of reproduction through time and nature. 🌍🔬 From the intricate Catalan Atlas of the 14th century to Da Vinci's innovative crossbow, humans have always sought ways to understand and enhance reproduction. Witness the ancient mating rituals of Tyrannosaurus rex dinosaurs captured in fossils, or marvel at the microscopic beauty of a uterus lining during menstruation under an SEM microscope. Delve into the miracle of life with illustrations showcasing the human placenta or observe English oak acorns as they prepare for their own reproductive journey. Discover nature's secrets with stunning images of geranium anthers and dahlia flower pollen magnified by SEM technology. Follow maple seed flight paths as they embark on their quest for new beginnings, just like Robert Louis Stevenson once wrote about in his captivating works on reproduction. Dive deep into marine life with sea cucumbers, fascinating creatures that possess unique methods of reproduction. And finally, explore the intricate world of plant fertility with mesmerizing SEM images capturing pollen grains in all their glory. Join us on this incredible journey through time and nature as we unravel the mysteries behind 'reproduction'.