Viperid Snakes (Viperidae Bonaparte, 1840) of Tam-Dao Mountain Ridge (Vinh-Phu and Bac-Thai Provinces, Vietnam)

2011 ◽  
Vol 4 (1) ◽  
pp. 64-74 ◽  
Author(s):  
Nikolai L. Orlov

The data about natural history (altitudinal and biotopical distribution, activity, reproduction, feeding) of five sympatric viperid snakes in Tam-Dao mountain ridge as well the identification keys of Azemiops and four species of Trimeresurus genus are given. Their spatial and trophical separation in tropical forest are discussed.

2021 ◽  
Vol 61 ◽  
pp. e20216120
Author(s):  
Camilla Spengler Waltrick ◽  
Luís Olímpio Menta Giasson

Snakes represent the richest Reptile group in Brazil, amounting to 412 species and 40% of them are endemic for the country. This great richness combined with the poor taxonomic knowledge makes the identification a difficult process. To correctly identify a specimen, guides, taxonomic revisions, identification keys, and consulting specialists are the most used methods. Identification keys are based on separation and segregation of characters, where the chosen paths lead to the appropriate taxa. These tools are normally used by students and non-taxonomists. Also, they can be very helpful with the general public, where they can identify the species with simple characters. This study aims to develop keys for the snakes from the State of Santa Catarina state, Brazil, focusing on the Itajaí Valley species. We surveyed 351 specimens deposited in Universidade Regional de Blumenau Zoological Collection (CZFURB), Universidade Federal de Santa Catarina (CHUFSC), and Natural History Museum of Capão da Imbuia (MHNCI) herpetological collections. Characters including pholidosis, dentition, and coloration patterns were examined from the 46 snake species registered from Itajaí Valley.


2021 ◽  
Vol 21 (3/4) ◽  
pp. 144-150
Author(s):  
A. Yu. Tsellarius ◽  

Seven species of snakes were revealed in 1997–1998, six of which (Natrix tessellata, N. natrix, Zamenis longissimus, Hierophis caspius, Platyceps najadum, and Elaphe sauromatus) were in the lower part of the slope, in the area of mediterranean vegetation. In 2001– 2003, the first three species were revealed only, and their numbers significantly decreased, reaching a maximum in the middle part of the slope, in the zone of transition from mediterranean vegetation to broad-leaved forests. In 1999–2000, the recreational load on the coastal area sharply rose, which probably was the cause for the species composition reduction and changes of the spatial distribution in snakes.


2019 ◽  
Vol 18 (1) ◽  
pp. 27-36
Author(s):  
Víctor Vásquez-Cruz ◽  
Luis Canseco-Márquez ◽  
Arleth Reynoso-Martínez

Distributional and natural history notes for Bromeliohyla dendroscarta (Anura: Hylidae) in Veracruz, Mexico. Two new locality records are reported for the critically endangered hylid frog, Bromeliohyla dendroscarta, in Veracruz, Mexico. The frogs were found in semideciduous tropical forest, an ecotone of semideciduous tropical forest and mountain cloud forest, and an agricultural mosaic; none of these habitats has been documented previously for this species. Information is provided on larval feeding habits, duration of larval development under natural conditions and external morphology of tadpoles.


Zootaxa ◽  
2018 ◽  
Vol 4500 (1) ◽  
pp. 91
Author(s):  
ALEJANDRO SEGOVIA-PACCINI ◽  
DANIELA AHUMADA-C. ◽  
JAIRO A. MORENO-GONZÁLEZ

Herein, we describe a new schizomid species from the genus Piaroa Villarreal, Giuponni & Tourinho, 2008, Piaroa turbacoensis sp. nov., based on individuals collected in the Botanical Garden “Guillermo Piñeres”, Turbaco, Bolivar, Colombian Caribbean region. Piaroa turbacoensis is the sixth species of the genus to be found in Colombia, and the tenth to be found with regards to the genus as a whole. This species is the first Colombian species to be recorded in a Dry Tropical Forest biome. Piaroa turbacoensis is easily distinguishable by the presence of spermathecae lateral lobes with massive circular stalk bases, and male pedipalp with ventroectal truncate process over the femur and ventroectal depression over the patella. Here, we provide an updated distribution map of the genus and comments about the natural history of the new species. 


Zootaxa ◽  
2019 ◽  
Vol 2724 (1) ◽  
pp. 29 ◽  
Author(s):  
ALEXANDRA M. R. BEZERRA ◽  
CIBELE R. BONVICINO ◽  
ALBERT A. N. MENEZES ◽  
JADER MARINHO-FILHO

The distribution, natural history, and morphology of Kerodon acrobata were updated based on nine new collected specimens totalling 14 known specimens. Two new localities were added to the distribution range of this species. Data on habitat use indicated that the presence of this rodent is associated to the cerrado sensu stricto and seasonally dry tropical forest patches in the northeastern Cerrado domain. Analyses of these specimens increased the range of body size and craniodental measurements for K. acrobata. We also describe, for the first time, phallic morphology of K. acrobata which exhibits a subcylindral glans penis and a simple baculum. High hunting activity and continuous loss of its natural habitat are factors that can be negatively affecting its populations. Habitat replacement poses a likely risk the present diversity at seasonally dry tropical forest enclaves of the northeastern Cerrado domain.


2020 ◽  
Vol 43 ◽  
Author(s):  
Hannes Rakoczy

Abstract The natural history of our moral stance told here in this commentary reveals the close nexus of morality and basic social-cognitive capacities. Big mysteries about morality thus transform into smaller and more manageable ones. Here, I raise questions regarding the conceptual, ontogenetic, and evolutionary relations of the moral stance to the intentional and group stances and to shared intentionality.


Author(s):  
E.L. Benedetti ◽  
I. Dunia ◽  
Do Ngoc Lien ◽  
O. Vallon ◽  
D. Louvard ◽  
...  

In the eye lens emerging molecular and structural patterns apparently cohabit with the remnants of the past. The lens in a rather puzzling fashion sums up its own natural history and even transient steps of the differentiation are memorized. A prototype of this situation is well outlined by the study of the lenticular intercellular junctions. These membrane domains exhibit structural, biochemical and perhaps functional polymorphism reflecting throughout life the multiple steps of the differentiation of the epithelium into fibers and of the ageing process of the lenticular cells.The most striking biochemical difference between the membrane derived from the epithelium and from the fibers respectively, concerns the presence of the 26,000 molecular weight polypeptide (MP26) in the latter membranes.


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