Search results for "TACE"

Isolation and characterization of microsatellite markers in the portunid crab Liocarcinus depurator using FIASCO and 454 next-generation sequencing

2012

The portunid crab Liocarcinus depurator is the dominant decapod crustacean present on mud bottoms of the continental shelf of the Mediterranean Sea. In order to better describe its genetic structure, a total of 11 microsatellites were isolated and tested in 28 L. depurator individuals from the Mediterranean locality of Tarragona. Initially, microsatellite isolation was carried out using the FIASCO methodology, but only 2 useful primer pairs could be designed. Given the low yield obtained, an alternative method based on 454 next-generation sequencing was assayed, which provided excellent results and from which another 9 primer pairs gave positive genotyping. All loci tested were polymorphic,…

Impacts of reduced Lepidurus arcticus availability on brown trout life history traits in a mountain reservoir

2020

Lepidurus arcticus (the Arctic tadpole shrimp) is a vulnerable keystone species in Arctic and alpine water bodies where its occurrence and population size may influence the viability and life history traits of resident salmonids. Using data from a Norwegian mountain hydropower reservoir, Aursjoen, we illustrate how reduced availability of L. arcticus as prey resulted in the reduced condition, growth and delayed maturation of resident brown trout (Salmo trutta). We further link changes in the relative abundance of L. arcticus as prey to changing reservoir conditions, e.g. water level changes in the spring period, thereby establishing an indirect link between reservoir operation regimes and b…

Jättikatkan (Gammaracanthus lacustris) ja jäännehalkoisjalkaisen (Mysis relicta) koko- ja tiheysjakaumat Saimaan Paasivedellä; Vertical size and dens…

2010

The ecology of relict crustaceans in Finnish lakes is quite poorly known. In this study we investigated the vertical distributions of these species in Lake Saimaa in the depth zones between 30 m and 60 m. We found out that Gammaracanthus. lacustris lives mainly in the deepest parts of the lake, while Mysis relicta favours the shallowest zones. The average length of both species increased with the depth in the study area. There were some differences in distributions between years, but the main reasons for that are not known exactly. peerReviewed

Makroäyriäisten (Gammaracanthus lacustris, Mysis relicta, Monoporeia affinis, Pallaseopsis quadrispinosa) vuorokausivaellukset Saimaan Paasivedellä; …

2010

We examined the diel vertical migrations of the macroscopic pelagic relict crustaceans Gammaracanthus lacustris, Mysis relicta, Monoporeia affinis and Pallaseopsis quadrispinosa in the deep Lake Paasivesi basin of the Saimaa lake complex. The samples were collected in October 2006 and 2007 using a Hydro-Bios Multi Plankton Sampler onboard the research vessel R/V Muikku. The study provides information about the day-and-night and year-to-year changes in the vertical distribution of these crustaceans. Regarding G. lacustris we explored if body size (length), sex or maturity have bearing on the individuals' depth preference or possible diel migrations. We noticed that G. lacustris females occur…

Maladie du huanglongbing

2019

Maladie du huanglongbing. Analyse du risque phytosanitaire pour l’Union européenne

Dal mare al museo: quando lo spiaggiamento di un cetaceo diventa divulgazione scientifica

2022

Upper thermal threshold of Lepidurus arcticus (Branchiopoda, Notostraca) in lakes on the southern outreach of its distribution range

2021

Qvenild T, Fjeld E, Fjellheim A, Hammar J, Hesthagen T and Lakka H-K. 2021. Upper thermal threshold of Lepidurus arcticus (Branchiopoda, Notostraca) in lakes on the southern outreach of its distribution range. Fauna norvegica 41: 50–88. The Arctic tadpole shrimp Lepidurus arcticus has a circumpolar distribution and the Scandes (Fennoscandian Mountains) marks its southernmost limit in Europe. Within this area, 391 natural and 88 regulated lakes with L. arcticus have been identified, of which 87% are above the treeline. The lakes hosting L. arcticus decrease in altitude from south to north, which results from its temperature preferences. The majority of the locations are at a lower lake air t…

Author Correction: Evaluation of three methods for biomass estimation in small invertebrates, using three large disparate parasite species as model o…

2018

Invertebrate biomass is considered one of the main factors driving processes in ecosystems. It can be measured directly, primarily by weighing individuals, but more often indirect estimators are used. We developed two indirect and non-destructive approaches to estimate biomass of small invertebrates in a simple manner. The first one was based on clay modelling and the second one was based on image analysis implemented with open-source software. Furthermore, we tested the accuracy of the widely used geometric approximation method (third method). We applied these three different methods to three morphologically disparate model species, an acanthocephalan worm, a crustacean and a flatworm. To …

Flagship species of the Pieniny NP. protected ex situ at PAS BGCBDC seed bank at WARSAW-POWSIN

2014

Pieniny Mts. are important biodiversity hotspot in Central Europe. According to Pieniny National Park Long Term Conservation Plan 2000-2020 small, isolated populations of some of Pieniny NP flagship species can become extinct till 2020. That is why their ex situ preservation at seed bank is justified and reasonable as supplement of active and passive in situ conservation measures carried out by National Park staff. PAS Botanical Garden – Center for Biological Diversity Conservation at Warsaw-Powsin has a long tradition of cooperation with Pieniny National Park (S Poland). This article focuses on the actions undertaken during EU funded conservation project: “Ex situ conservation of native, t…