Dynamics of flexible shells and Sharkovskiy's periodicity

Complex vibration of flexible elastic shells subjected to transversal and sign-changeable local load in the frame of nonlinear classical theory is studied. A transition from partial to ordinary differential equations is carried out using the higher-order Bubnov-Galerkin approach. Numerical analysis is performed applying theoretical background of nonlinear dynamics and qualitative theory of differential equations. Mainly the so-called Sharkovskiy periodicity is studied

The Status of Two Species of Nonindigenous Lizards in Florida, the Slender Chameleon, \u3ci\u3eChamaeleo gracilis\u3c/i\u3e Hallowell 1842 and White-lined Chameleon, \u3ci\u3eFurcifer lateralis\u3c/i\u3e (Gray 1831): A Corrigendum.

Krysko et al. (2016) recently published a summary of all known verified introductions of nonindigenous amphib­ians and reptiles in Florida, USA. Herein, we correct the iden­tity tity of one species and include an additional new record of a nonindigenous chameleon in Florida. Krysko et al. (2016) reported the presence of a White-lined Chameleon, Furcifer lateralis (Gray 1831). In fact, this was a misidentified Slender Chameleon, Chamaeleo gracilis Hallowell 1842 (C. Anderson, pers. comm. 2016). Discussion and reference to F. lateralis in Krysko et al. (2016) and all associated data (UF voucher number, locality, collector, and collection date, including Table 1, page 118, its associated paragraph, page 128, and the caption to Figure 10, page 128) should be modified to reflect this voucher’s identity as C. gracilis. Chamaeleo gracilis is indigenous to a broad region of eastern and western-central sub-Saharan Africa (Spawls et al. 2004; Tilbury and Tolley 2009; Tilbury 2014; Tolley and Menegan 2014; Glaw 2015). On 10 December 2004, a single supposed C. gracilis was found on a road in Palm City, Martin County, Florida. This gravid female oviposited 22 eggs in captivity, leading Engeman et al. (2005) to sug­gest that this species might be established. However, neither voucher specimen nor photograph was ever presented to con­firm the presence of this species, and no additional C. gracilis have since been found in that area

\u3ci\u3eGopherus polyphemus\u3c/i\u3e (Gopher Tortoise), \u3ci\u3eCtenosaura similis\u3c/i\u3e (Gray\u27s Spiny-Tailed Iguana) Predation

Gopherus polyphemus is currently listed as a threatened and protected species in the state of Florida (Mushinsky et al. 2006. In Meylan led.], Biology and Conservation of Florida Turtles, pp. 350-375. Chelonian Research Monographs 3). Documented natural predators of Gopherus polyphemus include the Raccoon (Procyon lotor), Gray Fox (Urocyon cinereoargenteris), Striped Skunk (Mephitus mephitis), Opposum (Didelphis virginianus), Armadillo (Dasypus novemcinctus),and crows (Corvus sp.) (Mushinsky et al., op. cit. ), and the introduced Savaunah Monitor (Varanus exanthematicus) (Owens et al. 2005. Herpetol. Rev. 3657-58). Herein, we augment this list to include the nonindigenous Gray\u27s Spiny-tailed Iguana (Ctenosaura similis)

Geographic distribution:\u3ci\u3e Acrantophis dumerili\u3c/i\u3e (Duméril’s Madagascan Ground Boa). USA. Florida.

The geographic distribution of Acrantophis dumerili, a nonindigenous introduced species in Florida, with new records, is presented. Acrantophis dumerili is indigenous to southern and southwestern Madagascar. We provide the first vouchers for Miami-Dade and Bay counties, which were likely escaped or released pets. Florida already has three established species of booid snakes (one boa, two pythons), all introduced through the pet trade pathway. Although there is no clear evidence for an established population of A. dumerili in Florida at this time, the Bay County individuals in a rural area in the Florida panhandle are a particular concern given that two propagules were found at the same general site less than one month apart, and Florida has the largest number of introduced herpetofauna in the world with nonindigenous species having a one out of three chance of becoming established (Krysko et al. 2016, op. cit.)

Geographic distribution:\u3ci\u3e Acrantophis dumerili\u3c/i\u3e (Duméril’s Madagascan Ground Boa). USA. Florida.

The geographic distribution of Acrantophis dumerili, a nonindigenous introduced species in Florida, with new records, is presented. Acrantophis dumerili is indigenous to southern and southwestern Madagascar. We provide the first vouchers for Miami-Dade and Bay counties, which were likely escaped or released pets. Florida already has three established species of booid snakes (one boa, two pythons), all introduced through the pet trade pathway. Although there is no clear evidence for an established population of A. dumerili in Florida at this time, the Bay County individuals in a rural area in the Florida panhandle are a particular concern given that two propagules were found at the same general site less than one month apart, and Florida has the largest number of introduced herpetofauna in the world with nonindigenous species having a one out of three chance of becoming established (Krysko et al. 2016, op. cit.)