Italian wolf


The Italian wolf, also known as the Apennine wolf, is a subspecies of the grey wolf native to the Italian Peninsula. It inhabits the Apennine Mountains and the Western Alps, though it is undergoing expansion towards the north and east. As of 2022 the wolf population within Italy is estimated to be 3,307 individuals. Although not universally recognised as a distinct subspecies, it nonetheless possesses a unique mtDNA haplotype and a distinct skull morphology.
It has been strictly protected in Italy since the 1970s, when the population reached a low of 70–100 individuals. The population is increasing in number, though illegal hunting and persecution still constitute a threat. Since the 1990s, the Italian wolf's range has expanded into southeastern France and Switzerland.
The Italian wolf features prominently in Latin and Italian cultures, such as the She-Wolf in the legendary founding of Rome. For this reason it is unofficially considered the national animal of Italy.

Taxonomy

The modern Italian wolf was first recognised as a distinct subspecies in 1921 by zoologist Giuseppe Altobello, who noted that its colour and skull differed from that of the common European wolf. He described the Italian population's skull as being rounder in form than that of the typical European wolf, with smaller teeth closely approaching those of dogs and golden jackals in appearance. Altobello's classification was later rejected by several authors, including Reginald Innes Pocock, who synonymised C. l. italicus with C. l. lupus. In 2002, the noted paleontologist R.M. Nowak reaffirmed the morphological distinctiveness of the Italian wolf in a study on grey wolf skulls from Italy, other Eurasian localities, and dog skulls. The results of this assessment showed no overlap in the skull morphology of Italian wolves and other grey wolves and dogs. Among the discovered characteristics distinguishing the Italian wolf were its relatively narrow palate between the first premolars, a broad frontal shield, and shallow jugal bone. The study recommended the recognition of Canis lupus italicus.
, it is classed by the third edition of Mammal Species of the World as synonymous with C. l. lupus. Nevertheless, the National Center for Biotechnology Information does list and publish research papers recognising its distinctiveness.

Lineage

The last specimen of the Mosbach wolf Canis mosbachensis in Europe dates to 456–416 thousand years ago, when it gave rise to the wolf Canis lupus. The earliest remains of a wolf in Europe were found in the Middle Pleistocene site of La Polledrara di Cecanibbio, north-west of Rome in deposits dated 406 thousand years ago. The genetic analysis of Apennine wolves indicates that they went through a population decline of 100–1,000 fold between the past 4,700–23,800 years, which indicates genetic isolation south of the alps from other wolf populations for many thousands of years.
In 1992, an examination of the mitochondrial DNA of 26 grey wolf populations worldwide revealed that the Italian wolf has a unique mitochondrial haplotype not shared by any other grey wolf population. Further tests on grey wolf mDNA revealed that, unlike several European grey wolf populations, Italian wolves do not share haplotypes with either other grey wolves or domestic dogs. In 2010, a study compared the mDNA haplotypes of 24 ancient wolf specimens from Western Europe dated between 44,000 and 1,200 YBP with those of modern gray wolves. The phylogenetic tree indicated that the haplotypes represented two haplogroups that were separated by five mutational steps. The ancient wolf samples from Western Europe all belonged to haplogroup 2, indicating haplogroup 2 predominance in this region for over 40,000 years before and after the last glacial maximum. A comparison of current and past frequencies indicated that in Europe, haplogroup 2 became outnumbered by haplogroup 1 over the past several thousand years, but in North America, haplogroup 2 became extinct and was replaced by haplogroup 1 after the last glacial maximum. The Italian wolf is the only remaining grey wolf subspecies included in this ancient haplogroup since the extinction of the Honshu wolf.
In 2016, a study of mDNA sequences of both modern and ancient wolves indicated that in Europe, the two most genetically distinct haplotypes form the Iberian wolf and separately the Italian wolf. The phylogenetic tree generated from the sequences showed the Italian wolf positioned close to the ancient wolves of the Late Pleistocene. In 2017, a study found a second mDNA haplotype that belonged to the Italian wolf, and called for the morphologically and genetically distinct Italian wolf to be considered as a subspecies.
In 2019, an mDNA study of 19 Late Pleistocene-Holocene wolf samples from northern Italy found that these fell within mitochondrial haplogroup 2 except for one sample. Four out of the six detected haplotypes matched ancient Beringian wolves, ancient wolves from northern Europe, some modern European and Chinese wolf populations, and are closely related to the two haplotypes currently found in the Italian wolves. The Italian wolf haplotypes were only one or two mutations away from those of the Pleistocene wolves, indicating mutation in their Italian glacial refuge. The Italian wolf population represents genetic uniqueness highlighted in several mitochondrial and nuclear DNA studies. It is the only remaining wolf population in Europe which belongs exclusively to an mDNA haplogroup that was once widespread in central and western Europe for over 40,000 years, and in North America until the Last Glacial Maximum. Additionally, one canid specimen from the Cava Filo archaeological site of San Lazzaro di Savena, Bologna fell within the domestic dog clade A haplotype — it was radio-carbon dated to be 24,700 years old.
In 2020, a genomic study of Eurasian wolves found that the populations of the Dinaric Alps-Balkan Mountains region, the Iberian peninsula, and Italy diverged from each other 10,500 years ago followed by negligible gene flow between them. Their long-term isolation may explain the morphological and genetic differences between them.
Tooth variable90555045403020Today
lower m1 length24.524.028.028.527.528.029.027.0
lower m1 width10.09.511.2511.7511.2511.512.011.0
upper P4 length22.025.024.7526.024.524.025.524.0
Upper P4 width8.758.99.510.010.59.510.09.75

''Canis lupus maximus''

Canis lupus maximus was a subspecies larger than all other known fossil and extant wolves from Western Europe. The fossilized remains of this Late Pleistocene subspecies were found across a wide area of south-western France at Jaurens cave, Nespouls, Corrèze dated 31,000 YBP; Maldidier cave, La Roque-Gageac, Dordogne dated 22,500 YBP; and Gral pit-fall, Sauliac-sur-Célé, Lot dated 16,000 YBP. The wolf's long bones are 10% longer than those of extant European wolves and 20% longer than its probable ancestor, C. l. lunellensis. The teeth are robust, the posterior denticules on the lower premolars p2, p3, p4 and upper P2 and P3 are highly developed, and the diameter of the lower carnassial were larger than any known European wolf. Wolf body size in Europe has followed a steady increase from their first appearance up to the peak of the last glacial maximum. The size of these wolves is thought to be an adaptation to a cold environment and plentiful game, as their remains have been found in association with reindeer fossils.
In a 2017 study, the dimensions of the upper and lower carnassial teeth of the Italian wolf are close to those of C. l. maximus. Fluctuations in the size of C. lupus carnassial teeth correlate with the spread of megafauna. The Italian wolf underwent a reduction in body size with the loss of the red deer during the Italian Renaissance only centuries ago.

Description

The Italian wolf typically weighs, though some big males have been weighed at. It measures in body length and in shoulder height. The pelt is generally of a grey-fulvous colour, which reddens in summer. The belly and cheeks are more lightly coloured, and dark bands are present on the back and tail tip, and occasionally along the fore limbs. Black wolves have been reported in the north-central Apennines, though their origin is unknown, as some melanistic individuals show no sign of wolf-dog hybridisation. It typically lives in packs of two to seven individuals.

Range and legal status

Wolf populations strongly declined across Europe during the 18th and 19th centuries largely due to human persecution, and by the end of the Second World War they had been eradicated from all of Central Europe and almost all of Northern Europe. Their population decline continued until the 1960s, with isolated populations surviving in Italy, Spain, Portugal, Greece, and Finland. Wolf populations have commenced recovering naturally since then.

Italy

The Italian wolf was widespread in the Italian Peninsula, including Sicily, until the mid-1800s. The extermination of the grey wolf in Italy was not as complete as in Northern Europe, due to greater cultural tolerance of the species. It was largely extirpated in the Alps during the 1920s, and disappeared from Sicily in the 1940s. Its range along the south-central Apennines was still relatively continuous by the 1950s, though this population was reduced in the decades after World War II because of widespread poisoning campaigns. At least 400 wolves were killed between 1960 and 1970, with the population reaching an all-time low in the early 1970s. The last documented wolf in the northern Apennines was killed in Santo Stefano d'Aveto, Genoa, in 1946, though this was an isolated individual, as the local wolf population had long been extinct.
The Italian wolf was first given legal protection on 23 July 1971, with a nationwide population census being taken in 1973. This census was funded by the Italian branch of the World Wide Fund for Nature as part of a conservation plan dubbed "Operazione San Francesco". The census revealed that the Italian wolf population consisted of 100–110 individuals distributed throughout a fragmented range in the main mountainous areas of south-central Italy, from the Sibillini to La Sila. In 1983, the population had reached 200–220 individuals inhabiting two unconnected areas in central and southern Italy. By the late 1990s, the Italian wolf population had increased to an estimated 400–500 individuals with a continuous distribution along the entire Apennines, from Aspromonte to the Maritime Alps, with some isolated populations in Tuscany and Lazio. In 2008, a wolf carcass was discovered in the Fiemme Valley in Trentino, and by 2010, 45–55 wolves were estimated to have recolonised Piedmont.
IUCN assessment information about peninsular population is as follows: "The Italian wolf population is estimated to be 500-800 individuals distributed along the Apennines. The shape of the range is narrow and elongated, restricted to the Apennines. The population has limited exchanges with the population of the Western Alps and recent genetic evidence indicates a flux of genes only in the direction toward the Alps. In spite of the recent increase in numbers and range, the Italian wolf population is still highly vulnerable to local extermination from human pressures and the stochastic nature of these events suggest to maintain a cautionary assessment. The population does not qualify for the category Endangered, but it may easily reverse its current favorable status."