Hapalemur occidentalis

Animalia, Lemuridae, VU

Hapalemur occidentalis is similar in size to Hapalemur griseus, with a head-body length of 27–28 cm, a tail length of 36–39 cm, and a total length of 55–67 cm. It appears to show a noteworthy degree of sexual dimorphism in terms of weight, with males averaging 846 g, but females reaching 1,188 g (E. E. Louis Jr., unpubl. data). It is more uniformly gray-brown in coat color than H. griseus, and its face is paler than other members of the genus. Ear length is similar to H. griseus (Groves, 2001; C. P. Groves, pers. comm.). It differs in diploid chromosome number (2n = 58) from H. griseus and H. alaotrensis (2n = 54) (Rabarivola et al., 2007). This species is unlikely to be confused with other diurnal lemurs in its range. \([\dots]\) https://lemursofmadagascar.com

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Current distribution

N. of observation used in the models

  N = 32

  Species distribution area

  SDA = 52 011 km\(^2\)

 

  Model performance

	ROC	OA	TSS
Value	1.00	0.91	0.91

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Climatic niche

Climatic and altitudinal range

 

	temp	prec	tseas	pseas	cwd	foret	alt
Mean	217	1641	2144	84	225	81	685
2.5%	170	980	1302	41	5	31	10
97.5%	267	2591	2659	132	838	100	1643

Variable importance

	GLM	GAM	RF	MaxE	ANN	mrank	rank
temp	0.14	0.28	0.27	0.00	0.70	4.80	6
prec	0.12	0.15	0.30	0.06	0.94	3.60	4
tseas	0.38	0.36	0.20	0.14	0.82	3.00	2
pseas	0.15	0.13	0.26	0.00	0.85	4.20	5
cwd	0.30	0.36	0.50	0.00	0.81	3.40	3
foret	0.47	0.76	0.46	0.92	0.72	2.00	1

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Vulnerability to climate change

Full dispersal

  RCP : 85, Year : 2080

 

Zero dispersal

  RCP : 85, Year : 2080

 

Scenarios

	RCP	Year	Disp	Area	Change
1	45	2080	full	39 712	-24
2	45	2080	zero	36 149	-30
3	85	2080	full	24 135	-54
4	85	2080	zero	22 558	-57

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