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85 results for “Amphisbaena”
FIGURE 3 in A new four-pored Amphisbaena (Squamata: Amphisbaenidae) from northeastern Brazil
FIGURE 3. Precloacal pores (A), lateral (B) and dorsal (C) view of the tip of the tail of Amphisbaena caetitensis sp nov. Preclocal pores are indicated by red arrows. Pre and postcloacal scales are indicated by black arrows. Scale bar = 2mm.
FIGURE 1 in A new four-pored Amphisbaena (Squamata: Amphisbaenidae) from northeastern Brazil
FIGURE 1. Distribution of Amphisbaena caetitensis sp nov. Star = type locality, Fazenda do Engenho, municipality of Caetité, Bahia State. Yellow circle = Fazenda Caraíbas, municipality of Mucugê, type locality of A. uroxena.
FIGURE 2 in A new four-pored Amphisbaena (Squamata: Amphisbaenidae) from northeastern Brazil
FIGURE 2. Dorsal (A, D), lateral (B, E) and ventral (C, F) views of the head of Amphisbaena caetitensis sp nov. (holotype, MUFAL 13635). Head shields abbreviations: IL = Infralabial, ML = Malar, MT = Mental, NS = Nasal, FR = Frontal, OC = Occular, PF = Prefrontal, PG = Postgenial (1ª and 2ª rows), PMT = Postmental, POC = Postoccular, PR = Parietal, RO = Rostral, SL = Supralabial, TP = Temporal. Scale bar = 2mm.
FIGURE 2 in Amphisbaena mensae Catro-Mello, 2000 is a synonym of Amphisbaena talisiae Vanzolini, 1995 (Squamata: Amphisbaenia: Amphisbaenidae)
FIGURE 2. Geographic distribution maps of known records of Amphisbaena talisiae (including specimens of A. mensae), showing ecoregions (Dinerstein et al. 2017) and soil type (Gardi et al. 2014; IUSS Working Group WRB 2015).
FIGURE 3 in A new species of the Amphisbaena (Squamata, Amphisbaenidae) from the Brazilian Cerrado with a key for the two-pored species
FIGURE 3. Amphisbaena mebengokre sp. nov. (holotype, MNRJ 25189). (A) Dorsal and (B) general ventral view. Scale bar = 5 millimeters.
FIGURE 5 in A new species of the Amphisbaena (Squamata, Amphisbaenidae) from the Brazilian Cerrado with a key for the two-pored species
FIGURE 5. Phylogenetic relationships of Amphisbaena mebengokre sp. nov. within Amphisbaena based in the maximum likelihood (ML) tree produced in RAxML of Amphisbaenia on combined analysis of three nuclear (BDNF, c-mos and RAG1) and three mitocondrial (12S, 16S and ND2) markers. Red branches denotes the clade composed by species of the Amphisbaena silvestrii group. The values of boostrap> 70% are showed in the nodes.
FIGURE 2 in A new species of the Amphisbaena (Squamata, Amphisbaenidae) from the Brazilian Cerrado with a key for the two-pored species
FIGURE 2. Ventral view of cloacal region and tail of Amphisbaena mebengokre sp. nov. (holotype, MNRJ 25189). The arrow points to two precloacals pores. Scale bar = 2 millimeters.
FIGURE 1 in A new species of the Amphisbaena (Squamata, Amphisbaenidae) from the Brazilian Cerrado with a key for the two-pored species
FIGURE 1. Lateral (A), ventral (B) and dorsal (C) views of the head of Amphisbaena mebengokre sp. nov. (holotype, MNRJ 25189). Scale bar = 2 millimeters.
FIGURE 4 in A new species of the Amphisbaena (Squamata, Amphisbaenidae) from the Brazilian Cerrado with a key for the two-pored species
FIGURE 4. Geographic distribution of Amphisbaenia silvestrii group based in present study material and bibliographic data (Gans 1962, 1964a; Vanzolini 1991, 1997; Mott & Vieites 2009; Silva Jr et al. 2009; Valdujo et al. 2009; Vrcibradic 1999; and Santos et al. 2014). Brazilian states: DF: Distrito Federal, GO: Goiás, MG: Minas Gerais, MT: Mato Grosso, MS: Mato Grosso do Sul, and TO: Tocantins.
FIGURE 3 in Amphisbaena lumbricalis Vanzolini, 1996 is a synonym of Amphisbaena carvalhoi Gans, 1965 (Squamata, Amphisbaenidae)
FIGURE 3. Geographic distribution map of literature records Amphisbaena carvalhoi (black circles), literature records of A. lumbricalis (white circles), and new records presented in this study. Locality names are in Table 1. Acronyms: CE—Ceará state; RN—Rio Grande do Norte state; PB = Paraíba state; PE: Pernambuco state; AL = Alagoas state; SE = Sergipe state; BA = Bahia state.
FIGURE 2 in Amphisbaena lumbricalis Vanzolini, 1996 is a synonym of Amphisbaena carvalhoi Gans, 1965 (Squamata, Amphisbaenidae)
FIGURE 2. Head in dorsal, lateral, and ventral views, caudal region, and general view of four new examined specimens of A. carvalhoi: (A) UFRN-CH 5143, from Serra das Vacas, Paranatama, Pernambuco; (B) UFRN-CH 4711, from Serra de Santana, Lagoa Nova, Rio Grande do Norte; (C) UFRN-CH 6432, from Serra de Santana, São Vicente, Rio Grande do Norte; (D) UFRNCH 6683, from Fazenda Riacho do Navio, Campina Grande, Paraíba. Scale bars: head = 1 mm; caudal region = 5 mm; general view = 10 mm.
FIGURE 5 in Amphisbaena lumbricalis Vanzolini, 1996 is a synonym of Amphisbaena carvalhoi Gans, 1965 (Squamata, Amphisbaenidae)
FIGURE 5. Living specimens of Amphisbaena carvalhoi: (A) UFRN-CH 4711, from Serra de Santana, Rio Grande do Norte; (B) UFRN-CH 5143, from Serra das Vacas, Pernambuco (tail was damaged at time of collection); (C) UFRN-CH 6683, from Fazenda Riacho do Navio, Paraíba. Photos taken by Matheus Meira-Ribeiro (A) and Raul Fernandes Dantas Sales (B, C).
FIGURE 1 in Amphisbaena lumbricalis Vanzolini, 1996 is a synonym of Amphisbaena carvalhoi Gans, 1965 (Squamata, Amphisbaenidae)
FIGURE 1. Head in dorsal, lateral, and ventral views, and cloacal region of the holotype of Amphisbaena carvalhoi (MNRJ 2095; left) and the holotype of A. lumbricalis (MZUSP 79433; right).
Data from - A new tale of lost tails: correlates of tail breakage in the worm lizard Amphisbaena vermicularis
Predator-prey interactions are important evolutionary drivers of defensive behaviours, but they are usually difficult to record. This lack of data on natural history and ecological interactions of species can be overcome through museum specimens, at least for some reptiles. When facing aggressive interactions, reptile species may exhibit the defensive behaviour of autotomy by losing the tail, which is also known as 'urotomy'. The inspection of preserved specimens for scars of tail breakage can reveal possible ecological and biological correlates of urotomy. Herein we investigated how the probability of urotomy in the worm lizard <i>Amphisbaena vermicularis</i> is affected by sex, body size, temperature, and precipitation. We found higher chances of urotomy for specimens with larger body size and from localities with warmer temperatures or lower precipitation. There was no difference in urotomy frequency between sexes. Older specimens likely faced – and survived – more predation attempts through their lifetime than smaller ones. Specimens from warmer regions might be more active both below- and aboveground, increasing the odds to encounter predators, and hence urotomy. Probability of urotomy decreased with increased precipitation. Possibly, in places with heavier rainfall worm lizards come more frequently to the surface when galleries are filled with rainwater, remaining more exposed to efficient predators, which could result in less survival rates and fewer tailless specimens. This interesting defensive behaviour is widespread in squamates, but yet little understood among amphisbaenians. The novel data presented here improve our understanding on the correlates of tail breakage and help us to interpret more tales of lost tails.
Amphisbaena mitchelli distribution extention
<p>Supplementary table for the article: Updated distribution map of <em>Amphisbaena mitchelli</em> (Squamata: Amphisbaenidae) with a new record in Maranhão, Brazil.</p>
Data from - A new tale of lost tails: correlates of tail breakage in the worm lizard Amphisbaena vermicularis
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Figures 1-3 from: Matias NR, Verrastro L (2018) Thermal biology of Amphisbaena munoai (Squamata: Amphisbaenidae). Zoologia 35: 1-9. https://doi.org/10.3897/zoologia.35.e24574
Figures 1-3 Frequency distribution of body temperatures of Amphisbaena munoai found at São Jerônimo between March 2011 and October 2012 (n = 185). Body temperatures are shown for: (1) the entire study; (2) the diurnal study; (3) the nocturnal study.
Figure 4 from: Matias NR, Verrastro L (2018) Thermal biology of Amphisbaena munoai (Squamata: Amphisbaenidae). Zoologia 35: 1-9. https://doi.org/10.3897/zoologia.35.e24574
Figure 4 Descriptive statistics (mean and standard deviation) for the body temperatures of Amphisbaena munoai found at São Jerônimo between March 2011 and October 2012. Tb: body temperatures for the entire study (n = 183); diurnal Tb: body temperatures for the diurnal study (n = 163); total nocturnal Tb: body temperatures for the nocturnal study (n = 22).
Figure 6 from: Matias NR, Verrastro L (2018) Thermal biology of Amphisbaena munoai (Squamata: Amphisbaenidae). Zoologia 35: 1-9. https://doi.org/10.3897/zoologia.35.e24574
Figure 6 Relationship between ambient temperatures and the body temperatures of Amphisbaena munoai found at São Jerônimo between March 2011 and October 2012 (n = 185).
Figure 5 from: Matias NR, Verrastro L (2018) Thermal biology of Amphisbaena munoai (Squamata: Amphisbaenidae). Zoologia 35: 1-9. https://doi.org/10.3897/zoologia.35.e24574
Figure 5 Seasonal frequency distribution of the body temperatures of Amphisbaena munoai found at São Jerônimo between March 2011 and October 2012 (n = 185).
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