Ernesto Morell Savall’s scientific contributions

We herein present new observations of refuge sharing in Cuban snakes, reporting the first instance of this behavior between the Giant Trope (Tropidophis melanurus) and Cuban Racer (Cubophis cantherigerus) and the first case of refuge sharing between three species of Tropidophis.

The Giant Trope (Tropidophis melanurus) is by far the largest and stoutest species in the family, it can reach almost double the size of most other relatively large congeners. Individuals around one meter SVL have been reported. Herein we report several very large individuals of both sexes, including new size records.

A review on mammal predation by snakes of the genus Tropidophis, with new records of predation on murid rodents by T. melanurus

Herein we document several new instances of predation on frogs of the genus Eleutherodactylus in western and central Cuba and provide a review of all predators reported for these frogs in Cuba.

The Cuban Boa (Chilabothrus angulifer) is a top terrestrial predator in Cuba. References to prey species consumed by this boa date to when the first Europeans arrived in the region more than 500 years ago. However, long-term studies on its trophic ecology do not exist. The scarce and scattered records on its feeding habits indicate that this boa preys on a variety of native and domestic animals. Based on dietary information collected in the field and from the literature, we characterized the diet of this snake and tested four different hypotheses: (1) The Cuban Boa is a generalist predator; (2) the diets of boas in natural and anthropogenic habitats differ; (3) an ontogenetic shift in diet occurs; and (4) foraging strategies used in natural and anthropogenic habitats differ. We identified 49 prey species from 351 prey items obtained from 218 snakes, including 71 items (31 snakes) from the literature. Mammals represented 55% of total prey items consumed, followed by birds (41%) and ectotherms (4%). Chilabothrus angulifer exhibited a narrow niche breadth. However, rather than a trophic specialist, we consider this boa an opportunistic generalist predator, capable of adjusting its diet and foraging behavior according to prey availability and abundance. The diet of Ch. angulifer changed dramatically from mostly native mammals and birds in natural habitats to mostly livestock, pets, and human com-mensals in human-altered habitats. Also, mammals were consumed more frequently in natural habitats, whereas birds dominated the diet of boas associated with anthropogenic habitats. Few ectotherms were consumed in either type of habitat. We observed an ontogenetic shift in diet, but this primarily reflected a trend of consuming larger prey rather than a shift from ectotherms to endotherms as reported for some other boids. In natural habitats, Ch. angulifer used both ambush and active-foraging modes by day and night, whereas in anthropogenic situations, most boas used an active-foraging strategy at night. The frequent consumption of domestic animals by Cuban Boas might be the principal reason for the historical human-wildlife conflict involving this species in rural areas of Cuba.

New localities and distribution models inform the conservation status of the endangered lizard Anolis guamuhaya (Squamata: Dactyloidae) from central Cuba. Anolis guamuhaya is known from seven localities restricted to the Guamuhaya Massif in central Cuba and is always associated with mountane ecosystems above 300 m a.s.l. Previous evaluations of the conservation status of the species based on the estimated number of mature individuals have categorized the anole as Endangered. Eight new records of A. guamuhaya are provided here. These double the number of known localities, and two represent the first records of the species in lowland areas, apart from the Guamuhaya Massif. The new records extend the elevational range of the species from 15 m to above 1000 m. We used ecological niche modeling based on all of the locality records, along with what we considered the most appropriate IUCN criteria according to the available information (Criterion B) to reevaluate the conservation status of the species. These new records of A. guamuhaya increase its area of occupancy up to a total of 60 km 2 , and its extent of occurrence up to 648 km 2. Despite this increase in geographic range, the species meets the IUCN criteria in the category of Endangered. We used ecological niche modeling to predict possible trends for the species under differing scenarios of global climate change, all of which portend a drastic reduction in area climatically suitable for A. guamuhaya.

Tropidophis feicki Schwartz, 1957 is restricted to densely forested limestone mesic areas in western Cuba (Schwartz & Henderson 1991; Henderson & Powell 2009). This species has been reported from about 20 localities distributed from near Guane, in Pinar del Río Province, to Ciénaga de Zapata, in Matanzas Province Rivalta et al., 2013; GBIF 2020; Fig. 1). On 30 June 2009 and on 22 December 2011 we found an adult male and an adult female Tropidophis feicki (ca. 400 mm SVL; Fig. 2), respectively, at the entrance of the “Cueva de la Virgen” hot cave (22.8201, -80.1384; 30 m a.s.l.; WGS 84; point 14 in Fig. 1). The cave is located within “Mogotes de Jumagua” Ecological Reserve, Sagua La Grande Municipality, Villa Clara Province. This locality represents the first record of this species for central Cuba, particularly for Villa Clara Province. This new record is about 123 km northeast (airline distance) of the nearest previous record at Playa Máquina, Ciénaga de Zapata, Matanzas Province (Rodríguez & Rivalta 2007).

The ecology of Cuban scorpions is very insufficiently studied and the scarce existing information on their natural enemies is dispersed in the literature. However, scorpions in general are well known to play an important role both as predators and prey in natural ecosystems. Herein we present new instances of predation on different species of scorpions in Cuba, and a review on the topic.