Alejandra Perina

Alejandra Perina
AllGenetics

Doctor of Biology

About

29
Publications
2,265
Reads
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85
Citations
Citations since 2016
7 Research Items
77 Citations
2016201720182019202020212022051015
2016201720182019202020212022051015
2016201720182019202020212022051015
2016201720182019202020212022051015

Publications

Publications (29)
Article
• The common littoral shrimp Palaemon serratus is an ecologically and economically important decapod crustacean. Understanding the spatial structure of its populations is crucial to implement effective management strategies. • In this study, 17 polymorphic microsatellite nuclear markers were examined in 252 individuals to explore the genetic divers...
Article
Full-text available
Abstract The rockpool shrimp Palaemon elegans is considered an important crustacean species within the European coastline fauna. This species is experiencing an ongoing geographical expansion beyond its native distribution range due to unintentional human introductions. A better knowledge of the genetic diversity, geographic structure and connectiv...
Article
Full-text available
Background The maintenance of species and the promotion of speciation are closely related to chromosomal rearrangements throughout evolution. Decapoda represents the most species-rich order among crustaceans and, despite its ecological and economic importance, little is known about decapod karyology. We aim at cytogenetically characterizing two sym...
Article
Full-text available
The shrimp Palaemon serratus is a coastal decapod crustacean with a high commercial value. It is harvested for human consumption. In this study, we used Illumina sequencing technology (HiSeq 2000) to sequence, assemble and annotate the transcriptome of P. serratus. RNA was isolated from muscle of adults individuals and, from a pool of larvae. A tot...
Article
Full-text available
Ensis Schumacher, 1817 razor shells occur at both sides of the Atlantic and along the Pacific coasts of tropical west America, Peru, and Chile. Many of them are marketed in various regions. However, the absence of clear autapomorphies in the shell and the sympatric distributions of some species often prevent a correct identification of specimens. A...
Article
Full-text available
The 5S ribosomal DNA (5S rDNA) is organized in tandem arrays with repeat units that consist of a transcribing region (5S) and a variable nontranscribed spacer (NTS), in higher eukaryotes. Until recently the 5S rDNA was thought to be subject to concerted evolution, however, in several taxa, sequence divergence levels between the 5S and the NTS were...
Data
Full-text available
Figure S1: Different 5S rDNA tandem arrangements. Drawings are done to scale. Scheme is as follows: a) last portion of the 5S (88 bp), NTS, 5S (120 pb), NTS, 5S (120 pb), NTS, and the first portion of the contiguous 5S (32 pb) for the trimer; b-g) last portion of the 5S (88 bp), NTS, 5S (120 pb), NTS, and the first portion of the contiguous 5S (32...
Data
Table S1: Accession numbers and details of barnacle sequences used in this study.
Data
Figure S2: Alignments of different types. F and G types are aligned together. Putative pseudogenes (red) are aligned with C type sequences. Table S2: Values of similarity among NTS types.
Data
Full-text available
Figure S3: Phylogenetic relationships of 5S rDNA for the three main variants in Pollicipes species reconstructed by means of a maximun likelihood trees. Numbers on nodes represent bootstrap values based on 100 replicates. (a) Phylogeny of A type reconstruted by K81uf + I + G model. (b) Phylogeny of E type reconstruted by SYM + I + G model. (c) Phyl...

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Projects

Projects (2)
Project
Sustainability of spiny spider crab and shrimp populations: study of the impact of the fishing activity in the reproductive potential and effective size of natural populations
Project
The management of seafood natural populations is based on a quote capture and exploitation days system, which does not obey robust scientific criteria. Seafood populations are generally managed in accordance to captures from previous years, regardless of the current condition of stocks. Currently management measures for some fishery resources can affect the population structure of exploited populations, and they must be organized on a less generalist scale, as it i's known that not every mature individual actually contributes to genetic variability of populations. The general aim of this project is to analyze the potential effect of fisheries activity on different facets of reproductive biology that are directly related to the reproductive potential and also to the effective population size, as well as the health, in terms of genetic variability, of the stocks. To achieve this objectivegoal we propose to study two species of a high commercial value, which are under an intense fishery activity, namely the spider crab, Maja brachydactyla, end the (Atlantic) shrimp, Palaemon serratus. These species present important differences on distinct biological aspects (sexual dimorphism, size, final moult, energy invested on reproduction, fertility, etc.), which are closely related to the reproductive potential of their