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  - Wildish, J.
A1  - Pavesi, Laura
A1  - Ketmaier, Valerio
T1  - Talitrid amphipods (Crustacea: Amphipoda: Talitridae) and the driftwood ecological niche  a morphological and molecular study
JF  - Journal of natural history : an international journal of systematics, interactive biology and biodiversity. - London : Taylor & Francis   1.1967 -
N2  - Coastal regions of the North East Atlantic and Mediterranean Seas have four known species of driftwood talitrids. Records are extremely scanty, often limited to the type locality and dating to 1950. We were able to study three of them, all belonging to the genus Macarorchestia, using fresh and archived samples including type material. Allometric and molecular analyses support: (1) a close relationship among all the three classically defined Macarorchestia species, (2) Macarorchestia was well separated from non-driftwood taxa, and (3) a putative new driftwood talitrid discovered during this study was not closely related to Macarorchestia. Genetic divergence between the new species and Macarorchestia remyi is as high as the average distance among a number of talitrid species included in the study for comparison. A key is provided to identify all three of the presently known species of Macarorchestia, using morphological characters employed in the allometric study.
KW  - Macarorchestia remyi
KW  - Macarorchestia roffensis
KW  - Macarorchestia martini
KW  - Driftwood habitat
KW  - COI-DNA barcoding
KW  - allometry
Y1  - 2012
U6  - https://doi.org/10.1080/00222933.2012.717971
SN  - 0022-2933
VL  - 46
IS  - 43-44
SP  - 2677
EP  - 2700
PB  - Routledge, Taylor & Francis Group
CY  - Abingdon
ER  -