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Laticauda colubrina

ABSTRACT: Whole genome sequencing of a sea snake Laticauda colubrina

PROVIDER: PRJDB7284 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	DRR147552_1.fastq.gz	Fastqsanger.gz
	DRR147552_2.fastq.gz	Fastqsanger.gz

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Sexual dimorphism in skull size and shape of <i>Laticauda colubrina</i> (Serpentes: Elapidae).

Project description:BackgroundSexual dimorphism in size and shape is widespread among squamate reptiles. Sex differences in snake skull size and shape are often accompanied by intersexual feeding niche separation. However, allometric trajectories underlying these differences remain largely unstudied in several lineages. The sea krait Laticauda colubrina (Serpentes: Elapidae) exhibits very clear sexual dimorphism in body size, with previous studies having reported females to be larger and to have a relatively longer and wider head. The two sexes also differ in feeding habits: males tend to prey in shallow water on muraenid eels, whereas females prey in deeper water on congerid eels.MethodsI investigated sexual dimorphism in skull shape and size as well as the pattern of skull growth, to determine whether males and females follow the same ontogenetic trajectories. I studied skull characteristics and body length in 61 male and female sea kraits.ResultsThe sexes differ in skull shape. Males and females follow distinct allometric trajectories. Structures associated with feeding performance are female-biased, whereas rostral and orbital regions are male-biased. The two sexes differ in allometric trajectories of feeding-related structures (female biased) that correspond to dietary divergence between the sexes.ConclusionsSea kraits exhibit clear sexual dimorphism in the skull form that may be explained by intersexual differences in the feeding habits as well as reproductive roles. The overall skull growth pattern resembles the typical pattern observed in other tetrapods.

| S-EPMC10590095 | biostudies-literature

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