Aquatic Toxicology, Год журнала: 2024, Номер unknown, С. 107110 - 107110
Опубликована: Сен. 1, 2024
Язык: Английский
Communicative & Integrative Biology, Год журнала: 2020, Номер 13(1), С. 170 - 183
Опубликована: Янв. 1, 2020
ABSTRACT Animals that can reproduce vegetatively by fission or budding and also sexually via specialized gametes are found in all five primary animal lineages (Bilateria, Cnidaria, Ctenophora, Placozoa, Porifera). Many bilaterian lineages, including roundworms, insects, most chordates, have lost the capability of vegetative reproduction obligately gametic. We suggest a developmental explanation for this evolutionary phenomenon: obligate gametic is result germline stem cells winning winner-take-all competition with non-germline control hence lineage survival. develop suggestion extending Hamilton's rule, which factors relatedness between parties into cost/benefit analysis underpins cooperative behaviors, to include similarity cellular state. show how coercive deceptive cell-cell signaling be used make costly behaviors appear less cooperating party. then stem-cell render an ancestral combination facultative sex unstable, one other process driven extinction. The increased susceptibility cancer observed obligately-sexual is, we suggest, side-effect exacerbated loss whole-body regenerative abilities. variety experimental approaches testing our predictions.
Язык: Английский
Процитировано
13
Journal of Biogeography, Год журнала: 2022, Номер 49(6), С. 1124 - 1136
Опубликована: Май 5, 2022
Abstract Aim Species biogeography mainly focuses on palaeogeographical events, while environmental factors are generally overlooked despite their importance in species diversification. Here, we use an integrative approach to understand how and processes shape distribution focus freshwater planarians as the model system. Location Western Mediterranean. Taxon Dugesia . Methods We inferred phylogenetic relationships of most known area using six molecular markers. then estimated divergence times reconstructed ancestral ranges. also performed niche modelling analyses subtentaculata a evaluate effects several hydro‐environmental variables likely existence interspecific competition distributions. Results Our results provide new scheme for from Mediterranean show that time splits between lineages putative ranges correlated with microplate tectonic dynamics within region during Oligocene–Miocene period. indicate type land cover slope terrain important abiotic driving this region. Finally, found partial overlap D. two other common planarian Iberian Peninsula. Main conclusions The period, together position mountain posterior climate changes, may have played crucial roles biogeographical history Moreover, both changes fluvial characteristics driven by human activities affect current diversity This study highlights integrating different types information species.
Язык: Английский
Процитировано
8
Molecular Phylogenetics and Evolution, Год журнала: 2022, Номер 178, С. 107649 - 107649
Опубликована: Окт. 21, 2022
The Mediterranean is one of the most biodiverse areas Paleartic region. Here, basing on large data sets single copy orthologs obtained from transcriptomic data, we investigated evolutionary history genus Dugesia in Western area. results corroborated that complex paleogeological region was an important driver diversification for genus, speciating as microplates and islands were forming. These processes led to differentiation three main biogeographic clades: Iberia-Apennines-Alps, Corsica-Sardinia, Iberia-Africa. internal relationships these major clades analysed with several representative samples per species. use regarding number loci samples, well state-of-the-art phylogenomic inference methods allowed us answer different unresolved questions about evolution particular groups, such path D. subtentaculata Iberian Peninsula its colonization Africa. Additionally, our support benazzii two lineages which could represent Finally, here first time a comprehensive asexual populations whose assignment at species level has been enigma through years. phylogenies showed branching topology individuals base sexual clades. We hypothesize this unexpected related long-term asexuality. This work represents phylotranscriptomic analysis Tricladida, laying stone genomic era phylogenetic studies taxonomic group.
Язык: Английский
Процитировано
8
Опубликована: Апрель 15, 2024
Understanding the interplay among organophosphorus flame-retardants (OPFRs), microplastics, and freshwater organisms is crucial for unravelling dynamics within environments foreseeing potential impacts of organic pollutants plastic contamination. For that purpose, present research assessed exposure impact 10 mg L–1 flame-retardant alumin-ium diethylphosphinate (ALPI), μg mg–1liver microplastics polyurethane (PU), combina-tion ALPI PU on planarian Girardia tigrina. The G. tigrina to both revealed a sequential effect, i.e., decrease in locomotor activity, while other molecular biomarkers (oxidative stress metabolic response) remained unaffected. Despite this fact, it was possible observe range (min-max) responses exposed or-ganisms were altered, particular case electron transport system, cholinesterase glutathione S-transferase, catalase levels total proteins, showing energetic costs detoxification antioxidant capacity might be causing less energy allocated activity. By examining physiological, behavioural, ecological planarians these pollutants, insights can gained into broader ecosystem-level effects inform strategies mitigating environmental risks associated with OPFRs microplastic pol-lution environments.
Язык: Английский
Процитировано
1
Aquatic Toxicology, Год журнала: 2024, Номер unknown, С. 107110 - 107110
Опубликована: Сен. 1, 2024
Язык: Английский
Процитировано
1