Iberian ibex

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Iberian ibex
Cabra montes 2.jpg
Male C.p. hispanica
CapraPyrenaicaHispanicaMontCaro.JPG
Female C.p. hispanica
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Bovidae
Subfamily: Caprinae
Tribe: Caprini
Genus: Capra
Species:
C. pyrenaica
Binomial name
Capra pyrenaica
(Schinz, 1838)
Subspecies

Capra pyrenaica hispanica [2]
Capra pyrenaica lusitanica [2]
Capra pyrenaica pyrenaica [2]
Capra pyrenaica victoriae [2]

Contents

Spanish Ibex.jpg
Distribution of the Iberian ibex

The Iberian ibex (Capra pyrenaica), [3] also known as the Spanish ibex, Spanish wild goat, or Iberian wild goat, is a species of ibex endemic to the Iberian Peninsula. Four subspecies have been described; two are now extinct. The Portuguese subspecies became extinct in 1892, and the Pyrenean subspecies became extinct in 2000. A project to clone the Pyrenean subspecies resulted in one clone being born alive in July 2003, making it the first taxon to become "un-extinct", although the clone died several minutes after birth due to physical defects in its lungs, therefore remaining extinct. [4]

Characteristics

Western Spanish ibex juvenile in Sierra de Gredos, Spain Capra pyrenaica victoriae, juvenile -- 2013 -- Laguna Grande, Sierra de Gredos, Espana.jpg
Western Spanish ibex juvenile in Sierra de Gredos, Spain

The Iberian ibex is characterized by its large and flexible hooves and short legs. These physical adaptations allow it to run and leap on bare, rocky, rough and steep slopes out of reach of potential predators. The horns of the Iberian ibex curve out and up and then back, inward, and, depending on subspecies, either up again or down. The annual horn growth is influenced principally by age but can also be contributed by environmental factors and the growth made in the previous year. [5] The Iberian ibex also shows sexual dimorphism, with the male being larger in size and weight and also having larger horns than the female. The bones of the female ibex ossify nearly two years before the bones of the male. [5]

Distribution and habitat

The Iberian ibex populates the Iberian Peninsula and consisted originally of four subspecies. However, with recent extinctions occurring within the last century, only two of the subspecies still exist. Both occur in Spain and along the coast in Portugal, [5] as well a small reintroduced population in the French Pyrenees. [6] It has been extirpated from Gibraltar and possibly Andorra. [1]

Behaviour and Ecology

Diet

The Iberian ibex is generally a mixed feeder between a browser and a grazer, depending on the plant availability in their home range. Thus, the percentage of each type of resource that is consumed will vary altitudinally, geographically, and seasonally. [5] The ibex also has a special mechanism in the kidney that stores fat in order to be used as energy during the cold winter times. The highest body storage of kidney fat can be found during the productive warm seasons and the lowest during the cold period. The body storage is characterized by the limited food resources. [7] Foraging in ibexes is also different depending on the season. When food resources are low during the winter, ibexes would reduce their rates of movement when foraging. However, during the spring season, when food is more available, they would increase their rate of movement and become more mobile in finding food. [8] This would be the ideal trend of movement since the spring season is more abundant in food resources meaning that there is more competition for food resources forcing some to trek farther in order to obtain food.

Reproduction and life cycle

Iberian ibex establish two types of social groups: male-only groups and females with young juvenile groups. [5] It is during rutting season (November/December) that the males interact with the females in order to reproduce. Allocation to testes mass was greatest in the rutting season, particularly at ages that are associated with a subordinate status and a coursing, rather than mate-guarding, reproductive strategy. [9] Mixed groups are also common during the rest of the winter. [10] During the birth season, the yearling are separated from the female groups at the time of the new births. The males are the first to separate and return to their male-only groups while the female yearlings eventually return to their mothers and spend their next few years with the group. [11]

Predatory response

Typical Spanish taxidermy of the different subspecies of the Iberian ibex, 1950 Exposicion trofeos de caza (2).jpg
Typical Spanish taxidermy of the different subspecies of the Iberian ibex, 1950

The Spanish ibex has a unique way of signaling others when a potential predator has been spotted. First the ibex will have an erect posture with its ears and head pointing in the direction of the potential predator. The caller will then signal the other ibexes in the group with one or more alarm calls. Once the group has heard the alarm calls, they will flee to another area that is usually an advantageous vantage point like a rocky slope where the predator cannot reach. [11] The ibex usually flees in a very coordinated fashion that is led by an experienced adult female in female-juvenile groups and an experienced male in male-only groups. [11] This possibly allows the group to escape in a more efficient way as the more experienced ibex will know which slope to run to. However, since their alarm calls consists of an abrupt explosive whistle, it can easily be heard by predators and quickly be located even from a distance. [11]

Threats and Conservation

The Count of Teba posing with a killed Iberian ibex of Gredos, photographed by the 11th Marquess of Valdueza, 1950's CarlosMitjansIbex.jpg
The Count of Teba posing with a killed Iberian ibex of Gredos, photographed by the 11th Marquess of Valdueza, 1950's

The populations of Capra pyrenaica have decreased significantly over the last centuries. This is probably due to a combination of contributing factors such as hunting pressure, agricultural development and habitat deterioration. Around 1890, one of its subspecies, C. pyrenaica lusitanica, also known as the Portuguese ibex, became extinct from its range in the Portuguese Serra do Gerês and Galicia. By the mid-nineteenth century, another of the four subspecies, the Pyrenean ibex, had lost most of its range. It finally became extinct in January 2000, when the last adult female died in the Ordesa National Park. [2] There are also a number of threats to the future preservation of the Spanish ibex such as population overabundance, disease, and potential competition with domestic livestock and other ungulates, along with the negative effects of human disturbance through tourism and hunting. [5] Recently ibexes from southern Spain have become exposed to disease outbreaks such as sarcoptic mange. [2] This disease, potentially fatal for infected individuals, unequally affects males and females [12] and it limits the reproductive investment of individuals. [13] Scabies has become the main destabilizing factor in many populations of Iberian ibex.

Subspecies

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<span class="mw-page-title-main">Ibex</span> Type of mammal

An ibex is any of several species of wild goat , distinguished by the male's large recurved horns, which are transversely ridged in front. Ibex are found in Eurasia, North Africa and East Africa. The name ibex comes from Latin, borrowed from Iberian or Aquitanian, akin to Old Spanish bezerro "bull", modern Spanish becerro "yearling". Ranging in height from 70 to 110 centimetres (27–43 in) and weighing 90 to 120 kilograms (200–270 lb), ibex can live up to 20 years. Two closely related varieties of goats found in the wild are not usually called ibex: the markhor and the feral goat.

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<span class="mw-page-title-main">Portuguese ibex</span> Extinct subspecies of Iberian ibex

The Portuguese ibex is an extinct subspecies of Iberian ibex that inhabited the north mountainous zones of Portugal, Galicia, Asturias and western Cantabria. In size and colouration it was much like the Spanish animals, though inclining towards brown rather than black markings. Its horns were strikingly different from any of the other Iberian subspecies. They were only half the length of the Pyrenean ibex, but were almost twice as wide, and, consequently, much closer together at their base.

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<span class="mw-page-title-main">Siberian ibex</span> Species of mammal

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<span class="mw-page-title-main">Western Spanish ibex</span>

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<span class="mw-page-title-main">Pyrenees conifer and mixed forests</span>

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References

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