TY  - JOUR
A1  - Apriyanto, Ardha
A1  - Tambunan, Van Basten
T1  - Draft genome sequence, annotation, and SSR mining data of Elaeidobius kamerunicus Faust., an essential oil palm pollinating weevil
JF  - Data in Brief
N2  - Elaeidobius kamerunicus Faust. (Coleoptera: Curculionidae) is an essential insect pollinator in oil palm plantations. Recently, researches have been undertaken to improve pollination efficiency using this species. A fundamental understanding of the genes related to this pollinator behavior is necessary to achieve this goal. Here, we present the draft genome sequence, annotation, and simple sequence repeat (SSR) marker data for this pollinator. In total, 34.97 Gb of sequence data from one male individual (monoisolate) were obtained using Illumina short-read platform NextSeq 500. The draft genome assembly was found to be 269.79 Mb and about 59.9% of completeness based on Benchmarking Universal Single-Copy Orthologs (BUSCO) assessment. Functional gene annotation predicted about 26.566 genes. Also, a total of 281.668 putative SSR markers were identified. This draft genome sequence is a valuable resource for understanding the population genetics, phylogenetics, dispersal patterns, and behavior of this species.
KW  - Whole-genome sequencing
KW  - NGS
KW  - Simple Sequence Repeat
KW  - Weevil
KW  - Curculionidae
KW  - Oil Palm
KW  - Pollinator
KW  - Genomics
Y1  - 2021
U6  - https://doi.org/10.1016/j.dib.2021.106745
SN  - 2352-3409
VL  - 34
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Angeleska, Angela
A1  - Omranian, Sara
A1  - Nikoloski, Zoran
T1  - Coherent network partitions
BT  - Characterizations with cographs and prime graphs
JF  - Theoretical computer science : the journal of the EATCS
N2  - We continue to study coherent partitions of graphs whereby the vertex set is partitioned into subsets that induce biclique spanned subgraphs. The problem of identifying the minimum number of edges to obtain biclique spanned connected components (CNP), called the coherence number, is NP-hard even on bipartite graphs. Here, we propose a graph transformation geared towards obtaining an O (log n)-approximation algorithm for the CNP on a bipartite graph with n vertices. The transformation is inspired by a new characterization of biclique spanned subgraphs. In addition, we study coherent partitions on prime graphs, and show that finding coherent partitions reduces to the problem of finding coherent partitions in a prime graph. Therefore, these results provide future directions for approximation algorithms for the coherence number of a given graph.
KW  - Graph partitions
KW  - Network clustering
KW  - Cographs
KW  - Coherent partition
KW  - Prime graphs
Y1  - 2021
U6  - https://doi.org/10.1016/j.tcs.2021.10.002
SN  - 0304-3975
VL  - 894
SP  - 3
EP  - 11
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  - 
TY  - JOUR
A1  - Andreev, Andrei
A1  - Raschke, Elena
A1  - Biskaborn, Boris
A1  - Vyse, Stuart Andrew
A1  - Courtin, Jérémy
A1  - Böhmer, Thomas
A1  - Stoof-Leichsenring, Kathleen R.
A1  - Kruse, Stefan
A1  - Pestryakova, Luidmila Agafyevna
A1  - Herzschuh, Ulrike
T1  - Late Pleistocene to Holocene vegetation and climate changes in northwestern Chukotka (Far East Russia) deduced from lakes Ilirney and Rauchuagytgyn pollen records
JF  - Boreas : an international journal of quaternary research
N2  - This paper presents two new pollen records and quantitative climate reconstructions from northern Chukotka documenting environmental changes over the last 27.9 ka. Open tundra- and steppe-like habitats dominated between 27.9 and 18.7 cal. ka BP. Betula and Alnus shrubs might have grown in sheltered microhabitats but disappeared after 18.7 cal. ka BP. Although the climate was rather harsh, local herb-dominated communities supported herbivores as is evident by the presence of coprophilous spores in the sediments. The increase in Salix and Cyperaceae similar to 16.1 cal. ka BP suggests climate amelioration. Shrub Betula appeared similar to 15.9 cal. ka BP, and became dominant after similar to 15.52 cal. ka BP, whilst typical steppe communities drastically reduced. Very high presence of Botryococcus in the Lateglacial sediments reflects widespread shallow habitats, probably due to lake level increase. Shrub Alnus became common after similar to 13 cal. ka BP reflecting further climate amelioration. Simultaneously, herb communities gradually decreased in the vegetation reaching a minimum similar to 11.8 cal. ka BP. A gradual decrease of algae remains suggests a reduction of shallow-water habitats. Shrubby and graminoid tundra was dominant similar to 11.8-11.1 cal. ka BP, later Salix stands significantly decreased. The forest-tundra ecotone established in the Early Holocene, shortly after 11.1 cal. ka BP. Low contents of green algae in the Early Holocene sediments likely reflect deeper aquatic conditions. The most favourable climate conditions were between similar to 10.6 and 7 cal. ka BP. Vegetation became similar to the modern after similar to 7 cal. ka BP but Pinus pumila came to the Ilirney area at about 1.2 cal. ka BP. It is important to emphasize that the study area provided refugia for Betula and Alnus during MIS 2. It is also notable that our records do not reflect evidence of Younger Dryas cooling, which is inconsistent with some regional environmental records but in good accordance with some others.
Y1  - 2021
U6  - https://doi.org/10.1111/bor.12521
SN  - 0300-9483
SN  - 1502-3885
VL  - 50
IS  - 3
SP  - 652
EP  - 670
PB  - Wiley-Blackwell
CY  - Oxford [u.a.]
ER  -