zoology

Rudolf Leuckart and his Research in Parasitology

Rudolf Leuckart and his Research in Parasitology

On October 7, 1822, German zoologist Karl Georg Friedrich Rudolf Leuckart was born. He is known to be one of the initiators of modern parasitology. Leuckart described the complicated life histories of various parasites, including tapeworms and the liver fluke, and demonstrated that some human diseases, such as trichinosis, are caused by multicellular animals of the various wormlike phyla. “Nowhere is it more true that “prevention is better than cure,” than in the case of…
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Carl Hagenbeck – Pioneer of the Modern Zoo

Carl Hagenbeck – Pioneer of the Modern Zoo

On May 7, 1907, German merchant of wild animals Carl Hagenbeck founded Germany’s most successful privately owned zoo, the Tierpark Hagenbeck. He created the modern zoo with animal enclosures without bars that were closer to their natural habitat. Background Carl Hagenbeck Already his father, Gottfried Hagenbeck, who was originally a fish dealer started displaying and trading animals in the mid-19th century. In 1866, Carl Hagenbeck joined his father’s business and started to expand…
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Charles Walcott and the Cambrian Explosion

Charles Walcott and the Cambrian Explosion

On August 30, 1909, American paleontologist Charles Doolittle Walcott discovered the Burgess Shale Formation, located in the Canadian Rockies of British Columbia. With its Cambrian fossils the Burgess Shale is one of the world’s most celebrated fossil fields. Walcott excavated repeatedly to collect more than 65,000 specimens from what is now known as the Walcott Quarry, named after him. “Nature has a habit of placing some of her most attractive treasures in places…
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Georges Cuvier and the Science of Paleontology

Georges Cuvier and the Science of Paleontology

On August 23, 1769, French naturalist and zoologist Jean Léopold Nicolas Frédéric Cuvier aka Georges Cuvier was born. He was a major figure in natural sciences research in the early 19th century, and was instrumental in establishing the fields of comparative anatomy and paleontology through his work in comparing living animals with fossils. “Why has not anyone seen that fossils alone gave birth to a theory about the formation of the earth, that without…
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Libbie Hyman and her Passion for the Invertebrates

Libbie Hyman and her Passion for the Invertebrates

On December 6, 1888, U.S. zoologist Libbie Henrietta Hyman was born. Hyman wrote two laboratory manuals and a comprehensive six-volume reference work, The Invertebrates, (1940-67) covering most phyla of its subject. This work, important for its organization, description and classification of invertebrates, is a reference still used today. Early Years Libbie Hyman was born in Des Moines, Iowa, USA, the third of four children and the only daughter of Joseph Hyman, a…
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August Krogh and the Capillary Motor Regulation Mechanism

August Krogh and the Capillary Motor Regulation Mechanism

On November 15, 1874, Danish zoophysiologist August Krogh was born. Krogh contributed a number of fundamental discoveries within several fields of physiology, and is famous for developing the Krogh Principle, which states that “for such a large number of problems there will be some animal of choice, or a few such animals, on which it can be most conveniently studied.” In 1920 August Krogh was awarded the Nobel Prize in Physiology or Medicine for…
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Paul Bartsch Interest in Molluscs

Paul Bartsch Interest in Molluscs

On August 14, 1871, American malacologist and carcinologist Paul Bartsch was born, Bartsch was an authority on molluscs, but had broad interests in natural history including plants and birds. He was named the last of those belonging to the “Descriptive Age of Malacology. Paul Bartsch – Youth and Education Paul Bartsch was born in Tuntschendorf, Silesia, and emigrated with his parents to the U.S.A in 1880, first to Missouri and then to Burlington,…
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Frank Lillie and the Fertilization Process

Frank Lillie and the Fertilization Process

On June 27, 1870, American zoologist and an early pioneer of the study of embryology Frank Rattray Lillie was born. Lillie is known for his discoveries concerning the fertilization of the egg (ovum) and the role of hormones in sex determination. He was instrumental in the development of the field of embryology. He identified the influence of potassium on cell differentiation and elucidated the biological mechanisms behind free-martins. Frank Lillie – Early Years Frank Lillie…
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Mary Jane Rathbun and the Secret Life of Crustacea

Mary Jane Rathbun and the Secret Life of Crustacea

On June 11, 1860, American zoologist Mary Jane Rathbun was born. Rathbun established the basic taxonomic information on Crustacea. For many years she was the Smithsonian’s complete department of marine invertebrates where she studied, cataloged, and preserved specimens. Through her basic studies and published works, she fixed the nomenclature of Crustacea and was the recognized, and the much sought after, authority in zoology and carcinology. A Self-taught Zoologist Mary Jane Rathbun was…
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Gilbert White – England’s First Ecologist

Gilbert White – England’s First Ecologist

On July 18, 1720, pioneering English naturalist and ornithologist Gilbert White was born. He is best known for his work Natural History and Antiquities of Selborne (1789), in which over the course of 20 years of his observations and two colleagues’ letters, he studied a wide range of flora and fauna seen around his hometown of Selborne, Hampshire. The Natural History and Antiquities of Selborne was adored by Charles Darwin, has been read by…
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