Hermann’s tortoise

(Testudo hermanni)

Hermann’s tortoise (Testudo hermanni ) is one of five tortoise species traditionally placed in the genus Testudo, the others being the marginated tortoise (T. marginata), Greek tortoise (T. graeca, or spur-thighed tortoise), Russian tortoise (T. horsfieldii ), and Kleinmann’s tortoise (T. kleinmanni, or Egyptian tortoise).

The specific epithet, hermanni, honors French naturalist Johann Hermann.

Testudo hermanni can be found throughout southern Europe. The western population (T. h. hermanni ) is found in eastern Spain, southern France, the Balearic islands, Corsica, Sardinia, Sicily, south and central Italy (Tuscany). The eastern population (T. h. boettgeri ) inhabits Serbia, Kosovo, Macedonia, Romania, Bulgaria, Albania, and Greece, while T. h. hercegovinensis populates the coasts of Bosnia and Herzegovina, Croatia, and Montenegro.

Hermann’s tortoises are small to medium-sized tortoises from southern Europe. Young animals, and some adults, have attractive black and yellow-patterned carapaces, although the brightness may fade with age to a less distinct gray, straw, or yellow coloration. They have slightly hooked upper jaws and, like other tortoises, possess no teeth, just strong, horny beaks. Their scaly limbs are greyish to brown, with some yellow markings, and their tails bear a spur (a horny spike) at the tip. Adult males have particularly long and thick tails, and well-developed spurs, distinguishing them from females.

The eastern subspecies T. h. boettgeri is much larger than the western T. h. hermanni, reaching sizes up to 28 cm (11 in) in length. A specimen of this size may weigh 3–4 kg (6.6–8.8 lb). T. h. hermanni rarely grows larger than 18 cm (7.1 in). Some adult specimens are as small as 7 cm (2.8 in).

Early in the morning, the animals leave their nightly shelters, which are usually hollows protected by thick bushes or hedges, to bask in the sun and warm their bodies. They then roam about the Mediterranean meadows of their habitat in search of food. They determine which plants to eat by the sense of smell. (In captivity, they are known to eat dandelions, clover, and lettuce, as well as the leaves, flowers, and pods of almost all legumes.) In addition to leaves and flowers, the animals eat small amounts fruits as supplementary nutrition.

Around midday, the sun becomes too hot for the tortoises, so they return to their hiding places. They have a good sense of direction to enable them to return. Experiments have shown they also possess a good sense of time, the position of the sun, the magnetic lines of the earth, and for landmarks. In the late afternoon, they leave their shelters again and return to feeding.

In late February, Hermann’s tortoises emerge from under bushes or old rotting wood, where they spend the winter months hibernating, buried in a bed of dead leaves. Immediately after surfacing from their winter resting place, Hermann’s tortoises commence courtship and mating. Courtship is a rough affair for the female, which is pursued, rammed, and bitten by the male, before being mounted. Aggression is also seen between rival males during the breeding season, which can result in ramming contests.

Between May and July, female Hermann’s tortoises deposit between two and 12 eggs into flask-shaped nests dug into the soil, up to 10 cm (3.9 in) deep. Most females lay more than one clutch each season. The pinkish-white eggs are incubated for around 90 days and, like many reptiles, the temperature at which the eggs are incubated determines the hatchlings sex. At 26 °C, only males will be produced, while at 30 °C, all the hatchlings will be female. Young Hermann’s tortoises emerge just after the start of the heavy autumn rains in early September, and spend the first four or five years of their lives within just a few metres of their nests. If the rains do not come, or if nesting took place late in the year, the eggs will still hatch, but the young will remain underground and not emerge until the following spring. Until the age of six or eight, when the hard shell becomes fully developed, the young tortoises are very vulnerable to predators, and may fall prey to rats, badgers, magpies, foxes, wild boar, and many other animals. If they survive these threats, the longevity of Hermann’s tortoises is around 30 years. One rare record of longevity is 31.7 years. Compared to other tortoises (e.g. Testudo Graeca), the longevity might be underestimated and many sources are reporting they might live 90 years or more.

Breeding and upbringing of Hermann’s tortoises is quite easy if kept in species-appropriate environments. The European Studbook Foundation maintains stud books for both subspecies. With the help of ultraviolet light-emitting bulbs (UVa and UVb, such as Repti Glo and Creature World), the correct environment for breeding can be created and bring tortoises into breeding condition.

Several tortoise sanctuaries are located in Europe, such as Carapax in southern Tuscany, and Le Village Des Tortues in the south of France (near Gonfaron). These sanctuaries rescue injured tortoises whilst also taking in unwanted pets, and specialise in Hermann’s tortoises.

The UK, with its large captive population, also has many specialist centres providing rescue facilities.

In nature, the animals dig their nightly shelters out and spend the relatively mild Mediterranean winters there. During this time, their heart and breathing rates drop notably. Domestic animals can be kept in the basement in a roomy rodent-proof box with a thick layer of dry leaves. The temperature should be around 5 °C. As an alternative, the box can be stored in a refrigerator. For this method to be used, the refrigerator should be in regular day-to-day use, to permit air flow. During hibernation, the ambient temperature must not fall below zero. Full-grown specimens may sleep four to five months at a time.