Zoologi: Padder og krybdyr (herpetologi)

This handbook is the first complete guide to the herpetofauna of northeast Africa, covering seven countries - Djibouti, Egypt, Ethiopia, Eritrea, Somalia, South Sudan and Sudan.The seven countries of north-east Africa - Egypt, Sudan, South Sudan, Ethiopia, Eritrea, Djibouti and Somalia - share a remarkably diverse landscape, and the region is home to a vast array of herpetofauna, from the Variable Green Toad to the Congo Hinged Terrapin, the Nubian Pigmy Gecko and the Pasteur's Desert Racer. This handbook is the most comprehensive and up-to-date reference to all 114 species of amphibian and 458 species of reptile known from the region, including caecilians, frogs, turtles and tortoises, lizards, crocodiles and snakes. Featuring more than 950 photos, Handbook of Amphibians and Reptiles of North-east Africa includes information on identification, habitat and distribution, behaviour, and best locations to see species, as well as up-to-date species maps. Supporting chapters cover the region's habitats, conservation, and safety when observing and handling amphibians and reptiles. This is an essential resource for anyone interested in the unique and extraordinarily diverse herpetofauna of north-east Africa.

"A jargon-free, compact guide to 469 amphibian and reptile species found in Costa Rica, with information on recently discovered species and updates on already known species. Includes photographs, line drawings, and range maps to aid readers in identifying species in the field"-

Alaska Fishes is an ideal, simplified reference to the most common species of freshwater and nearshore fish found in the land of the midnight sun. The handy reference guide highlights native and introduced species that inhabit its lakes and rivers in a beautifully illustrated 12-panel laminated, folding guide. It provides descriptions of fish anatomy, a key to field marks, a watershed map, and conservation status. Alaska Fishes is a perfect source of portable information and ideal for field use by beginners and experts alike. Made in the USA.

"Dive into prehistoric waters and discover extraordinary sea creatures who reigned supreme in the ocean for 150 million years"--

They spawn in the middle of the ocean but spend their adult lives in freshwater. They can overcome seemingly insurmountable obstacles and even cross over land. They are revered as guardians and monster-seducers by New Zealand's Maori, yet are often viewed with disgust in the West. They are a multibillion-dollar business in the Asian food market. They are often mistaken for snakes. They are eels?one of the world's most amazing and least understood fish. (Yes, fish.) James Prosek offers a fascinating tour through the life history and cultural associations of the freshwater eel, exploring its biology, its myth and lore, its mystery and beauty. Eels is a mesmerizing biography of an intriguing and mysterious creature, as well as a telling look at humanity, the will to persist, and the ever-changing relationship between man and the natural world.

Den internationalt storsælgende illustrator Britta Teckentrup udforsker krybdyrenes verden i denne rigt illustrerede fagbog om øgler i alle former og størrelser. Krybdyr lever alle vegne! Nogle af dem i junglen, nogle på savannen, og andre bor måske i din baghave! I denne bog vil du lære om alverdens reptiler, hvor i verden de bor, og alle de sære og vidunderlige træk ved dem, som du aldrig havde forestillet dig. Dette er faglitteratur med gnist og personlighed fra en højt elsket illustrator.

Meet the world's most fascinating sea creatures-see the lives and curiosities of colourful fish and coral reefs-this spectacular volume has more than 300 color photos and extraordinary text from a leading marine biologist and underwater photographer, and an international expert on seahorses.

Palaeobatrachidae are an extinct family of frogs whose earliest members are recorded from the Middle Eocene (Geiseltal, Messel, Germany), almost 50 million years ago, although there are indications that they appeared as early as before the Cretaceous mass extinction event and survived almost to our times. Their last survivors are recorded from the Middle Pleistocene, less than 0.5 million years ago, such that they were contemporaries of Neanderthal man. Their last fossil evidence is from the regions that were adjacent to the Pleistocene continental glacier. Like today's pipid frogs (e.g. Xenopus), they were obligate water dwellers, not able to make long excursions onto dry land. Without exaggerating, they literally died out frozen in their ponds. Permanent life in water has a uniforming effect. This is why they all looked similar to one another, which is a source of difficulty for taxonomists. On the other hand, one cannot overlook features they have in common with pipids, restricted to the southern hemisphere. Palaeobatrachus and Xenopus are undoubtedly related, but when and why ancestors of Palaeobatrachus immigrated to the western part of northern Eurasia but not to its eastern part and not to North America remains a puzzling question. Thus, being acquainted with Palaeobatrachus means to be invited on an excursion not only into comparative anatomy, but also into paleogeography and many other fields of palaeontology. Last but not least, Palaeobatrachus was the first fossil frog scientifically described, as early as in 1831. Since that time, many excavation sites from which original material came have ceased to exist; thus there is no possibility that further material will be recovered. What is now deposited in scientific collections is the unique and limited source of data for future comparative studies. This is one of the main reasons why this rich illustrated review was published.

Vidste du, at krokodiller kan blive over 100 år gamle og kan klatre op i træer for at tage solbad? Vidste du, at der findes 26 forskellige arter, og at de kan svømme tre gange hurtigere end en olympisk svømmer. Vidste du også, at de kan mærke vibrationerne fra en enkelt vanddråbe. der falder fra munden af en gnu, som drikker, på 20 meters afstand?Serien SKARP PÅ tager dig med vidt omkring i dyreriget og fortæller dig detaljeret om de forskellige dyrearter.Et visuelt festfyrværkeri af en børnefagbog, der tillige er sprængfyldt med velformidlet og spændende fakta. De smukke illustrationer har et helt særligt retro-agtigt udtryk, der leder tankerne hen på lærebøger fra 1950'erne. De er tegnet med en venlig streg, med masser af naturtro detaljer. Helhedsindtrykket er yderst indbydende og meget charmerende. Også velegnet til emnearbejde i skolen. Absolut anbefalelsesværdig!Lektørudtalelsen om tidligere bind i serien.Titler i serien:Skarp på hajerSkarp på kattedyrSkarp på krokodillerSkarp på aberSkarp på blæksprutterSkarp på frøerSkarp på pingvinerSkarp på billerSkarp på bjørne