The complete mitochondrial genome of the alvinocaridid shrimp Shinkaicaris leurokolos (Decapoda, Caridea): Insight into the mitochondrial genetic basis of deep-sea hydrothermal vent adaptation in the shrimp

The complete mitochondrial genomes of two vent squat lobsters, Munidopsis lauensis and M. verrilli: Novel gene arrangements and phylogenetic implications

“…These can to some extent explain why more positively selected sites were detected in complexes I, III, and V in our study. Similar results were found in hydrothermal vent alvinocaridid shrimps (Sun, Hui, Wang, et al, 2018;Wang et al, 2017), providing a better understanding of the adaptation of organisms to the deep-sea vent environment.…”

“…Similar characteristics were also reported in the deep-sea anemone Bolocera sp. (Zhang, Zhang, Wang, Zhang, & Lin, 2017), deep-sea spongicolid shrimp Spongiocaris panglao (Sun et al, 2018a), and the hydrothermal vent alvinocaridid shrimp Shinkaicaris leurokolos (Sun, Hui, Wang, et al, 2018).…”

“…In recent years, the mitogenome has become a powerful system for examining the genetic basis of organismal adaptation to various harsh environments, and signals of positive selection have been detected in mitochondrial genes of various taxa (Korkmaz, Aydemir, Temel, Budak, & Başıbüyük, ; Luo, Yang, & Gao, ; Scott et al, ; Wang et al, ; Yu, Wang, Ting, & Zhang, ; Yuan et al, ; Zhang et al, ; Zhou, Shen, Irwin, Shen, & Zhang, ). Most of these studies focused their attention on vertebrates, whereas few reports examined the adaptive evolution of crustacean mitogenomes to hydrothermal vent environments (Sun, Hui, Wang, & Sha, ; Wang et al, ). The molecular evolution of mitochondrial protein‐coding genes in hydrothermal vent squat lobsters are still poorly understood.…”

The first complete mitochondrial genome of the Mariana Trench Freyastera benthophila (Asteroidea: Brisingida: Brisingidae) allows insights into the deep‐sea adaptive evolution of Brisingida

“…In addition, in the analyses of individual genes, we found five residues with high posterior probabilities in the atp8 (8 N, 16 I), nad2 (47 D, 196 V), and nad5 (599 N), respectively (Table ). Similar results have been observed in deep‐sea animals, and the authors concluded that it may be related to the adaptation to environment (Sun et al., ; Zhang et al., ). Under the deep‐sea extreme environment, survival may require a modified and adapted energy metabolism (Sun et al., ).…”

“…Despite strong functional constraints, mitochondrial DNA may be subject to positive directional selection in response to pressures from extreme harsh environment (Tomasco & Lessa, 2011). Indeed, mtDNA analyses have demonstrated the existence of adaptive evolution in the ATP synthase genes of the sea anemones, alvinocaridid shrimp, and galliform birds (Sun, Hui, Wang, & Sha, 2018;Zhang, Zhang, Wang, Zhang, & Lin, 2017;Zhou et al, 2014); the NADH dehydrogenase genes of sea anemones, alvinocaridid shrimp, Tibetan horses, and Chinese snub-nosed monkeys (Sun et al, 2018;Xu et al, 2007;Yu et al, 2011;Zhang et al, 2017); the cytochrome b gene of cetaceans and alpacas (da Fonseca, Johnson, O'Brien, Ramos, & Antunes, 2008); and the cytochrome c oxidase genes of Tibetan antelope and anthropoids (Adkins & Honeycutt, 1994;Luo et al, 2008).…”