COMPARATIVE MITOGENOMIC ANALYSIS INDICATES POSSIBLE CRYPTIC SPECIES IN LAMBIS LAMBIS (GASTROPODA: STROMBIDAE)

被引：2

作者：

Li, Fengping ^{[1
,2
]}

Gu, Zhifeng ^{[1
,2
]}

Wang, Aimin ^{[1
,2
]}

Liu, Chunsheng ^{[1
,2
]}

Yang, Yi ^{[1
,2
]}

机构：

[1] Hainan Univ, State Key Lab Marine Resource Utilizat South Chin, 58 Renmin Ave, Haikou 570228, Hainan, Peoples R China

[2] Hainan Univ, Coll Marine Sci, 58 Renmin Ave, Haikou 570228, Hainan, Peoples R China

来源：

JOURNAL OF SHELLFISH RESEARCH | 2022年 / 41卷 / 03期

关键词：

Lambis lambis; strombidae; genetic distance; phylogeny; divergence time; South China Sea; DIVERSITY; MOLLUSCA; SELECTION;

D O I：

10.2983/035.041.0308

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

The spider-like strombid Lambis lambis is widely distributed in the Indo-Pacific region and possesses morphological diversity. In the present study, the complete mitochondrial genomes of two morphologically different specimens of L. lambis that were collected in Sanya (SY) and Zhaoshu (ZS) islands of the South China Sea (namely L. lambis-SY and L. lambis-ZS) were sequenced. They were also compared with that of L. lambis previously published and sampled from coastal waters of Quanfu (QF) Island of the South China Sea (namely L. lambis-QF). The newly sequenced mitochondrial genomes L. lambis-SY and L. lambis-ZS contained 13 protein-coding genes, 22 transfer RNA genes, two ribosomal RNA genes, and several noncoding regions, indicating a similar pattern with respect to genome size, gene order, and nucleotide composition compared with that of L. lambis-QF. Although L. lambis-SY and L. lambis-ZS differed in shell morphology, the genetic distance between them was small. On the other hand, considerable genetic distance values were detected between L. lambis-QF and L. lambis-SY/L. lambis-ZS, suggesting that the former might be a possible cryptic species within L. lambis. The divergence of the cryptic lineage L. lambis-QF was dated to 4.6 Mya, falling in the lower Pliocene that corresponded to a paleoclimatic transition from cool to warm conditions. This study, therefore, suggests a correlation between paleoclimate change and speciation event.

引用

页码：369 / 380

页数：12

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