Habitat Comparisons of Two Sympatric Salamander Species of the Genus Plethodon (Amphibia, Caudata, Plethodontidae)

1979 ◽  
Vol 13 (4) ◽  
pp. 504
Author(s):  
Stephen L. Reinbold
Keyword(s):  
Habitat Comparisons ◽  
Salamander Species

Two new species of montane web-footed salamanders (Plethodontidae: Bolitoglossa) from the Costa Rica-Panamá border region

Zootaxa ◽  
2009 ◽  
Vol 1981 (1) ◽  
pp. 57-68 ◽  
Author(s):  
FEDERICO BOLAÑOS ◽  
DAVID B. WAKE
Keyword(s):  
New Species ◽  
Body Size ◽  
Costa Rica ◽  
Body Wall ◽  
Species Group ◽  
The Body ◽  
Border Region ◽  
Two New Species ◽  
Adult Body ◽  
Salamander Species

Two new species of lungless salamanders (Plethodontidae) are described from high montane habitats of the border region between Costa Rica and Panamá. Bolitoglossa pygmaea and B. robinsoni are distinguished from each other and from other salamander species in this remote area by differences in adult body size, external proportions, foot webbing, tooth counts and/or external coloration. Both new species are assigned to the B. subpalmata species group, subgenus Eladinea. The miniaturized B. pygmaea is remarkable in being extensively depigmented, yet having the peritoneum and stomach area heavily pigmented and visible through the body wall.

scholarly journals Has the Eastern Red-backed Salamander (Plethodon cinereus) Declined in Ontario?

2017 ◽  
Vol 131 (2) ◽  
pp. 115-119
Author(s):  
David C. Seburn ◽  
Erin Mallon
Keyword(s):  
Cryptic Species ◽  
Citizen Science ◽  
Median Number ◽  
Plethodon Cinereus ◽  
Ambystoma Maculatum ◽  
Science Data ◽  
Detection Rates ◽  
The World ◽  
Ambystoma Laterale ◽  
Salamander Species

Amphibians are known to be declining around the world. Although often only reported for frogs, declines among salamanders are also known to be occurring. In Ontario, for example, citizen science monitoring indicates the Eastern Red-backed Salamander (Plethodon cinereus) has not been found in the last 20 years in many areas where it was historically known to occur. To test whether this decline is real or the result of lack of recent observations, we conducted targeted surveys in 25 grid squares with no recent records of the species and confirmed the presence of the Eastern Red-backed Salamander in 84% of these squares. It made up 90% (183 of 202) of all six species of salamanders encountered and was also the first salamander species detected in 90% of the squares. The median number of cover objects needed to detect a species was 34 (range 1–145) for Eastern Red-backed Salamanders, 129.5 (range 34–204) for Blue-spotted Salamanders (Ambystoma laterale), and 154 (range 6–187) for Spotted Salamanders (Ambystoma maculatum), and these detection rates differed significantly (H = 9.46, P < 0.01). Our study suggests that Eastern Red-backed Salamanders have not declined. We caution researchers using citizen science data that a lack of sightings of a “cryptic species” does not mean a species has declined.

scholarly journals A review of colour phenotypes of the Eastern Red-backed Salamander, Plethodon cinereus, in North America

2014 ◽  
Vol 128 (3) ◽  
pp. 250 ◽  
Author(s):  
Jean-David Moore ◽  
Martin Ouellet
Keyword(s):  
North America ◽  
Plethodon Cinereus ◽  
Colour Polymorphism ◽  
Northeastern North America ◽  
Salamander Species

The Eastern Red-backed Salamander (Plethodon cinereus) is the most abundant salamander species in many forests of northeastern North America. It is well-known for its colour polymorphism, which includes eight colour phenotypes: the red-backed (striped), lead-backed (unstriped) and erythristic morphs, as well as the iridistic, albino, leucistic, amelanistic and melanistic anomalies. Here we review the various colorations of P. cinereus, with the objective of facilitating the identification of these different phenotypes and of generating interest among field herpetologists and scientists reporting on this species. We also list six previously unpublished occurrences of colour variants in this species (1 case of erythrism, 3 of iridism, 1 of leucism, and 1 of partial leucism). To our knowledge, these cases include the first documented occurrence of iridism in the red-backed morph of P. cinereus, and the first two mentions of this colour anomaly in the lead-backed morph from Canada.

Comparison of hematological parameters in two different high altitudinal populations of Batrachuperus pinchonii (Amphibian: Urodela)

2018 ◽  
Vol 39 (1) ◽  
pp. 11-20
Author(s):  
Jianli Xiong ◽  
Yanan Zhang ◽  
Yuanye Sun ◽  
Qiangqiang Liu ◽  
Chaojie Fan ◽  
...  
Keyword(s):  
Health Status ◽  
Hematological Parameters ◽  
Hemoglobin Concentration ◽  
Erythrocyte Count ◽  
Physiological Adaptation ◽  
Width Ratio ◽  
Physiological Basis ◽  
Mean Values ◽  
Significant Difference ◽  
Salamander Species

Hematological parameters are key to reflect the health status of animals and their physiological adaptation to the environment. However, few studies focused on the inter- and intra-specific variations of hematological parameters in hynobiid salamanders. Here, we examined the hematological parameters of the stream salamander,Batrachuperus pinchonii, originating from two different altitudinal populations to explore their intra-specific variation. Sexual dimorphism is only present in the erythrocyte count and males have higher mean values than females. The morphometric values of erythrocyte, hemoglobin concentration, and erythrocyte count of the high altitudinal (Jiajin) population were smaller than those of the lower altitudinal (Sandaoping) population; however, a significant difference between two populations was only revealed in the case of erythrocyte length via ANOVA. The results of linear regression showed that a significant relationship was present between body condition and erythrocyte length as well as the erythrocyte length to erythrocyte width ratio. Our findings suggest that the features of hematological parameters inB. pinchoniiare reflected in the size of erythrocyte, and neither in erythrocyte count nor in hemoglobin concentration. These results provide a foundation for assessing and monitoring the health status of this salamander species, and furthermore, for understanding the physiological basis of altitudinal adaptation.

Genetic and phylogenetic structure of Hynobius quelpaertensis, an endangered endemic salamander species on the Korean Peninsula

2019 ◽  
Vol 42 (2) ◽  
pp. 165-178 ◽  
Author(s):  
Ho Young Suk ◽  
Han-Gyu Bae ◽  
Dong-Young Kim ◽  
Hari Won ◽  
Hae Jun Baek ◽  
...  
Keyword(s):  
Korean Peninsula ◽  
Phylogenetic Structure ◽  
Salamander Species

Molecular taxonomic reassessment of the Cloud Forest’s Bolitoglossa salamanders (Caudata: Plethodontidae) from Cordillera de Mérida (Mérida state, Venezuela)

Zootaxa ◽  
2012 ◽  
Vol 3356 (1) ◽  
pp. 47 ◽  
Author(s):  
GUSTAVO FERMIN ◽  
JAVIER GARCÍA-GUTIÉRREZ ◽  
MOISÉS ESCALONA ◽  
ANDRÉS MORA ◽  
AMELIA DÍAZ
Keyword(s):  
16S Rrna ◽  
Sierra Nevada ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Morphological Evidence ◽  
Rrna Gene ◽  
Putative Species ◽  
Salamander Species ◽  
The 16S Rrna Gene ◽  
Tissue Digestion

Salamanders found at different localities nearby Mérida city, Venezuela, are thus far reported as Bolitoglossa orestes or B.spongai. However, morphological ambiguities among individuals from several populations of both putative species, besidestheir reported disparate geographical distributions, prompted us to clarify the specific identity of these bolitoglossines throughthe sequence analysis of their corresponding 16S rRNA genes. Seventeen specimens belonging to the vertebrates collection ofUniversidad de Los Andes (CVULA), collected at separated cloud forests in Sierra La Culata (San Eusebio, Macho Capaz andSan Javier del Valle) and Sierra Nevada de Mérida (La Mucuy), were used to extract DNA upon tissue digestion. Sequenceanalysis of the 16S rRNA gene supports a biogeographical scenario where, so far, there is only one salamander species for eachsierra: B. orestes, which is widely distributed in Sierra La Culata, and a so far undescribed species of a Venezuelan bolitogloss-ine apparently restricted to Sierra Nevada de Mérida. Based on our molecular results and an examination of morphological evidence, B. spongai should be considered a synonym of B. orestes.

Cycle vital et croissance de Bithynia tentaculata L. (Mollusca, Gastropoda, Prosobranchia) du Lac St-Louis près de Montréal

1971 ◽  
Vol 49 (5) ◽  
pp. 759-766 ◽  
Author(s):  
Bernadette Pinel-Alloul ◽  
Etienne Magnin
Keyword(s):  
Life History ◽  
Representative Sample ◽  
Bithynia Tentaculata ◽  
Collecting Methods ◽  
May 1968 ◽  
Habitat Comparisons ◽  
Physical And Chemical

A total of 13468 specimens of Bithynia tentaculata were collected at four sampling sites on Lake St-Louis from May 1968 to July 1969. To obtain a representative sample of the populations, various collecting methods were used. The life history and the growth at each station were compared and correlated with the physical and chemical features of the habitat. Comparisons with Lilly's (1953) observations in Britain are also included.

Sign in / Sign up

Export Citation Format

Share Document