TY  - JOUR
A1  - Pavesi, Laura
A1  - De Matthaeis, Elvira
A1  - Tiedemann, Ralph
A1  - Ketmaier, Valerio
T1  - Temporal population genetics and COI phylogeography of the sandhopper macarorchestia remyi (Amphipoda: Talitridae)
JF  - Zoological studies
N2  - Laura Pavesi, Elvira De Matthaeis, Ralph Tiedemann, and Valerio Ketmaier (2011) Temporal population genetics and COI phylogeography of the sandhopper Macarorchestia remyi (Amphipoda: Talitridae). Zoological Studies 50(2): 220-229. In this study we assessed levels of genetic divergence and variability in 208 individuals of the supralittoral sandhopper Macarorchestia remyi, a species strictly associated with rotted wood stranded on sand beaches, by analyzing sequence polymorphisms in a fragment of the mitochondrial DNA (mtDNA) gene coding cytochrome oxidase subunit I (COI). The geographical distribution and ecology of the species are poorly known. The study includes 1 Tyrrhenian and 2 Adriatic populations sampled along the Italian peninsula plus a single individual found on Corfu Is. (Greece). The Tyrrhenian population was sampled monthly for 1 yr. Genetic data revealed a deep phylogeographic break between the Tyrrhenian and Adriatic populations with no shared haplotypes. The single individual collected on Corfu Is. carried the most common haplotype found in the Tyrrhenian population. A mismatch analysis could not reject the hypothesis of a sudden demographic expansion in almost all but 2 monthly samples. When compared to previous genetic data centered on a variety of Mediterranean talitrids, our results place M. remyi among those species with profound intraspecific divergence (sandhoppers) and dissimilar from beachfleas, which generally display little population genetic structuring.
KW  - Macarorchestia remyi
KW  - Talitridae
KW  - Cytochrome oxidase I
KW  - Population genetics
Y1  - 2011
SN  - 1021-5506
VL  - 50
IS  - 2
SP  - 220
EP  - 229
PB  - Institute of Zoology, Academia Sinica
CY  - Taipei
ER  - 
TY  - JOUR
A1  - Sharma, Reeta
A1  - Stuckas, Heiko
A1  - Bhaskar, Ranjana
A1  - Khan, Imran
A1  - Goyal, Surendra Prakash
A1  - Tiedemann, Ralph
T1  - Genetically distinct population of Bengal tiger (Panthera tigris tigris) in Terai Arc Landscape (TAL) of India
JF  - Mammalian biology = Zeitschrift für Säugetierkunde
N2  - We analyzed mtDNA polymorphisms (a total of 741 bp from a part of conserved control region, ND5, ND2, Cyt b and 12S) in 91 scats and 12 tissue samples of Bengal tiger (Panthera tigris tigris) populations across Terai Arc Landscape (TAL) located at the foothills of Himalayas in North Western India, Buxa Tiger Reserve (BTR), and North East India. In TAL and BTR, we found a specific haplotype at high frequency, which was absent elsewhere, indicating a genetically distinct population in these regions. Within the TAL region, there is some evidence for genetic isolation of the tiger populations west of river Ganges, i.e., in the western part of Rajaji National Park (RNP). Although the river itself might not constitute a significant barrier for tigers, recent human-induced changes in habitat and degradation of the Motichur-Chilla Corridor connecting the two sides of the tiger habitat of RNP might effectively prevent genetic exchange. A cohesive population is observed for the rest of the TAL. Even the more eastern BTR belongs genetically to this unit, despite the present lack of a migration corridor between BTR and TAL. In spite of a close geographic proximity, Chitwan (Nepal) constitutes a tiger population genetically different from TAL. Moreover, it is observed that the North East India tiger populations are genetically different from TAL and BTR, as well as from the other Bengal tiger populations in India.
KW  - Bengal tiger
KW  - Population genetics
KW  - mtDNA haplotype
KW  - Terai Arc
Y1  - 2011
U6  - https://doi.org/10.1016/j.mambio.2010.10.005
SN  - 1616-5047
VL  - 76
IS  - 4
SP  - 484
EP  - 490
PB  - Elsevier
CY  - Jena
ER  -