Galea spixii
In 3 days ~60% in a week ~90%
Spix's yellow-toothed cavy (Galea spixii) is a rodent, a cavy species from South America. It is found in Bolivia east of the Andes and much of south central to northeastern Brazil. The species is found in open savanna and semiarid habitats, such as the Cerrado and Caatinga of Brazil. Its karyotype is 2n = 64 and FN = 118.
Galea spixii and G. musteloides are similar and may actually be the same species. G. spixii tolerates a wide range of environmental changes, though they need open habitats. It is the most stable species within the Galea group because it is extremely abundant throughout its range.
Gestation is about fifty days. Litter size ranges from one to five, with an average of three. They have hair and open eyes at birth. Maturation of the two sexes takes differently long: female G. spixii have an open vagina when they are approximately eighty days old while the testicular descent is completed in male G. spixii at around one hundred thirty-five days old. Males and females in this species are aggressive to each other. Paternal care is rarely remarkable. When females go into estrus aggressiveness increases. On the other hand, when male approaches females in order to mate, it competes aggressively with other males. A study done in Brazil reported that nine male cavies were put to death to experiment their sperm recovery by soaking or injecting their sperm into a liquid that contained a chemical buffer. Unfortunately, there were no distinctive results between either soaking or injecting. Wikipedia →
Recording0:29
Brazil · 2022
© Breno Farias · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Natal | 🇧🇷 Brazil |
No species of the same family or order lives in Natal, so these are its closest relatives here: other mammals.
Possible
About 20% of wildlife watchers report a Spix's Yellow-toothed Cavy sighting in Natal on a given day, based on 5 verified sightings from GBIF citizen-science data. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
June–July and October
In those months about 40% of wildlife watchers report a Spix's Yellow-toothed Cavy in Natal on a given day, against under 5% in September and November–May, the lowest months.
Only Natal, in our data
Natal is the only city on Wallace's Line with enough records to rate Spix's Yellow-toothed Cavy sightings: about 20% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Spix's Yellow-toothed Cavy is recorded against all the mammals logged in Natal (5 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
