Distribution of the local form Soanierana Ivongo:
Soanierana Ivongois a small harbor city on the east coast of Madagascar that belongs to Analanjirofo region. About 25.000 people live here, mainly from fishery and cloves or lychee plantations. It is known as a ferry port for driving to the famous holiday island Nosy Boraha (St. Marie). North of the city there flows the Marimbona river and makes a natural barrier for chameleons. In the east, there is the Indian Ocean and in the south, there is another, somewhat smaller river.
Appearance of the local form:
Despite the natural barrier to the island of St. Marie (the ocean), male panther chameleons here have a similar color to this local form. Dominating is a blueish-grey color with red cross bands. Some males are more greyish-white.
Gewicht = weight in grams, Kopf-Rumpf-Länge = snout-vent-length in cm, Weibchen = females, Männchen = males
Since 2015, we have been measuring the weights of chameleons found by us in Madagascar, as far as the animals (and our scales) participate. In the long term, we aim to obtain an average weight in relation to snout-vent-length (measured from the tip of the nose to the cloaca) for each species from as many measurements as possible. It is important to know that all weights were measured towards the end of the rainy season (= best food supply), so these should be maximum weights on Madagascar. Triangular symbols in females mean not pregnant, round symbols mean pregnant. In Furcifer pardalis, contrary to our original assumption, it has so far turned out that there are no serious differences in the ratio of SVL to weight between the individual local forms.
We have collected the data given above over several years with thermometers and hygrometers at the finding places of the chameleons. "Average temperature" means that values of a whole month have been calculated to one average value per month. For example all measured minimum temperature values of February have been calculated to one average minimum temperature for February. In plain language, this means single peak values of a day may be a little higher or lower than the average minimum and maximum temperatures. It is possible that a location has an average maximum temperature of 29°C, but one day during that month it had 33°C or even 35°C there.
Climate in Fenoarivo and Soanierana Ivongo is warm all year long due to the coastal location. During rainy season from October to April, temperatures raise regularly above 30°C in sunny places, nights do not drop below 21°C. Humidity is high and it rains every other day.Dry season has little lower temperatures with night drops to 15°C at lowest. It rains much less, you have to expect rain showers only every couple of days.
The panther chameleons of Soanierana Ivongo live in shrubs, bushes, and trees along the roads, in the open landscape around the city. The ground is mostly sandy, and vegetation consists of palms, high grass and fruit trees such as tamarinds and lychees.