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CCM2-Artigos (em revistas ou actas indexadas)

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http://hdl.handle.net/10400.1/976
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    (Sistema Regional de Información para Revistas Científicas de América Latina, Caribe, España y Portugal: latindex.org/latindex/)

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Percorrer CCM2-Artigos (em revistas ou actas indexadas) por Objetivos de Desenvolvimento Sustentável (ODS) "13:Ação Climática"

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  • Editors' Corner: Blubber thickness in cetaceans
    Publication . Canario, Adelino
    Wang Y, Zhang Q, Xu Q, Zhang H, Liu X, Yang G. Cetacean-specific GPR12 mutation is functionally associated with blubber thickening. Gene, volume 968, 10 October 2025, 149734. https://doi.org/10.1016 /j.gene.2025.149734. The blubber, a thick layer of fatty tissue, is a key adaptation in aquatic mammals, providing energy storage and facilitating buoyancy and locomotion (Berta, 2023). Blubber thickening has evolved independently in cetaceans (whales, dolphins, and porpoises), sirenians (manatees and dugongs), and pinnipeds (seals, sea lions, and walruses), raising questions about the genetic basis of this adaptation. Wang et al. (2025) reasoned that G protein-coupled receptor genes associated with the regulation of lipid metabolism could be involved, and homed in on GPR12, whose deficiency in mice leads to obesity and dyslipidemia (Bjursell et al., 2006)
    2026-02Artigo científico Acesso restrito Ver mais
  • The reference genome for the northeastern Pacific bull kelp, Nereocystis luetkeana
    Publication . Alves-Lima, Cicero; Montecinos, Gabriel; Escalona, Merly; Calhoun, Sara; Marimuthu, Mohan; Nguyen, Oanh; Beraut, Eric; Lipzen, Anna; Grigoriev, Igor V; Raimondi, Peter; Nuzhdin, Sergey; Alberto, Filipe
    Bull kelp, Nereocystis luetkeana, is a northeastern Pacific kelp with broad distribution from Alaska to central California. Its population declines have caused severe concerns in northern California, the Salish Sea in Washington, and recently in some populations in Oregon. Despite bull kelp's accumulated ecological and physiological studies, an assembled and annotated genomic reference was still unavailable. Here, we report the complete and annotated genome of Nereocystis luetkeana, produced by the California Conservation Genomics Project (CCGP), which aims to reveal genomic diversity patterns across California by sequencing the complete genomes of approximately 150 carefully selected species. The genome was assembled into 1,562 scaffolds with 449.82 Mb, 80x of coverage and 22,952 gene models. BUSCO assembly showed a completeness score of 72% for the stramenopiles gene set. The mitochondria and chloroplast genome sequences have 37 Mb and 131 Mb, respectively. The orthology analysis between 10 Phaeophycean genomes showed 1,065 expanded and 286 unique orthogroups for this species. Pairwise comparisons showed 542 orthogroups present only in N. luetkeana and M. pyrifera, another large-body kelp. The enrichment analysis of these orthogroups showed important functions related to central metabolism and signaling due to ATPases enrichment in these two species. This genome assembly will provide an essential resource for the ecology, evolution, conservation, and breeding of bull kelp.
    2025-10-13Artigo científico Acesso aberto Ver mais
  • Temperature effects on growth performance, fecundity and survival of hippocampus guttulatus
    Publication . Palma, Jorge; Correia, Miguel; Leitão, Francisco; Andrade, José Pedro Andrade
    Abstract: This experiment aimed to determine the temperature limits beyond which seahorse growth and reproduction become suboptimal due to climate change. Four temperatures (16, 20, 24, and 28 ◦C) were tested to evaluate their effect on juvenile (1–56 days post-parturition (DPP)) and adult (one year old) long-snout seahorses, Hippocampus guttulatus. Additionally, the reproductive performance of adults was observed. Another experiment measured oxygen consumption (MO2 ) in the same age groups and temperatures. Adults showed significantly higher growth rates at 20 and 24 ◦C compared to 16 and 28 ◦C. Adult mortality rates were 0%, 0%, 6.2%, and 62.5% at the respective temperatures. Juvenile growth performance was higher at 20 ◦C and 24 ◦C but significantly lower at 16 ◦C and null at 28 ◦C, with survival rates of 8%, 62%, 10%, and 0%, respectively. Oxygen consumption increased with temperature, ranging from 106.3 ± 3.1 to 203.3 ± 3.1 µmol O2/g BW/h at 16 ◦C, and from 127.6 ± 3.5 to 273.3 ± 3.1 µmol O2/g BW/h at 28 ◦C for adults and 1 DPP juveniles, respectively. The study highlights that juvenile and adult H. guttulatus have narrow thermal boundaries, beyond which reproduction, growth, and survival are seriously affected. Under climate change, the species appears unable to cope, potentially leading to their rapid disappearance.
    2024-11-25Artigo científico Acesso aberto Ver mais