The complete mitochondrial genome of Laevistrombus canarium (Gastropoda: Stromboidae)

Abstract

Laevistrombus canarium is a marine gastropod species with high economical value. The complete mitochondrial genome of L. canarium has been characterized in this study. The circular mitogenome is 15626 bp in length and comprises 13 protein-coding genes (PCGs), 22 transfer RNA genes, and two ribosomal RNA (rRNA) genes. The organization of these genes is consistent with that of other stromboidae species. The overall base composition of mitochondrial genome is 30.87% A, 38.99% T, 15.54% G, and 14.60% C, with 69.86% AT. Phylogenetic analysis further implies that L. canarium is placed within the Stromboidae.

The queen conch mitogenome: intra- and interspecific mitogenomic variability in Strombidae and phylogenetic considerations within the Hypsogastropoda

“…The complete mitochondrial genome of Aliger gigas from the Mexican Caribbean was sequenced, assembled, and deposited in GenBank (accession number MZ157283). The total length of the mitogenome is 15,460 bp which is consistent with other mitogenomes obtained from Strombidae species: Aliger gigas 15,461 bp 11 , Lambis lambis 15,481 bp 14 , Harpago chiragra 15,460 bp 14 , Tridentarius dentatus 15,500 bp 15 , and Laevistrombus canarium 15,626 bp 37 . Conomurex luhuanus 38 and Strombus pugilis 15 have longer total lengths, 15,799 bp and 15,809 bp, respectively, due to the presence of a large, non-coding region (428 bp and 436 bp respectively) between the tRNA-Phe and the COX3 genes proposed as a candidate for D-loop 38 .…”

“…The NAD5 gene obtained in our mitogenome has 1,728 bp with a complete stop codon (TAA) which is consistent with the length and stop codon (TAA or TAG) of other Strombidae species, while Márquez et al 11 obtained a NAD5 length of 1,753 bp with an incomplete stop codon (T–) which is not very common in Hyspogastropoda. Gene order in our mitogenome is similar to other Strombidae 11 , 14 , 15 , 37 , 38 . This is not surprising considering that gene organization is relatively stable throughout the Gastropoda.…”

“…Three overlaps between adjacent genes were found in our A. gigas mitogenome (Table 1 ) as was identified for T. dentatus 15 . Other Strombidae species have eight or six overlaps ( S. pugilis and M. variabilis respectively 15 ), four overlaps ( L. lambis and H. chiragra 14 , and L. canarium 37 ), or only one overlap ( C. luhuanus 38 ). Localization of overlaps into the mitogenome is relatively stable among Strombidae species.…”

“…We take advantage of the large number of mitogenomes in clade Hypsogastropoda available on GenBank, including the very recent Stromboidea mitogenomes published 15 , 37 , and the two mitogenomes of A. gigas to: (i) present and describe a completely annotated mitogenome of A. gigas from the Mexican Caribbean, (ii) quantify intraspecific variation between our newly generated A. gigas mitogenome with that of one from off the coast of Colombia, (iii) evaluate interspecific variation among eight Strombidae species, (iv) confirm the phylogenetic position of Stromboidea and its relationship with Xenophoridae, as well as the relationships between eight Strombidae species using 110 mitogenomes, and finally, (v) estimate divergence times throughout Hypsogastropoda, Stromboidea, Strombidae and Aliger , respectively.…”