Variability and significance of parietal and ventral scales in the marine snakes of the genus Lapemis (Serpentes, Hydrophiidae), with comments on the occurance of spiny scales in the genus / Paul Gritis, Harold K. Voris.

Gritis, Paul A.; Voris, Harold K.

doi:10.5962/bhl.title.3109

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…These species were diagnosed according to differences in their parietal and ventral scales (Smith ). However, Gritis & Voris () examined nearly 1400 specimens and found that these characters varied continuously across the species' collective range and as a result referred both species to L. curtus . Given that our molecular genetic analyses strongly support the presence of two largely reproductively isolated species in the IO and WP, a re‐evaluation of additional morphological traits that may separate these lineages is needed.…”

Section: Discussionmentioning

confidence: 99%

Multilocus phylogeography of the sea snake Hydrophis curtus reveals historical vicariance and cryptic lineage diversity

Ukuwela

Silva²,

Mumpuni

et al. 2014

Zoologica Scripta

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2014). Multilocus phylogeography of the sea snake Hydrophis curtus reveals historical vicariance and cryptic lineage diversity. -Zoologica Scripta, 43, 472-484. The Indo-Australian archipelago (IAA) supports the world's highest diversity of marine fish, invertebrates and reptiles. Many of the marine fish and invertebrates show congruent phylogeographic patterns, supporting a view that the region's complex geo-climatic history has played an important role in generating its exceptional biodiversity. Here, we examine population genetic structure of the viviparous sea snake, Hydrophis curtus, to assess how past and present barriers to gene flow in the IAA have contributed to genetic and species diversity in a fully marine reptile. Mitochondrial and anonymous nuclear sequences and ten microsatellite loci were used to identify patterns of historical genetic structure and population expansion, reconstruct dated genealogies and assess levels of recent gene flow. These markers revealed strong concordant geographic structure within H. curtus with a prominent genetic break between populations broadly distributed in the Indian Ocean and the West Pacific. These populations were estimated to have diverged in the late Pliocene or early Pleistocene, and microsatellite admixture analyses suggested limited recent gene flow between them despite the current lack of barriers to dispersal, indicating possible cryptic species. Subsequent divergence in the mid-late Pleistocene was detected within the West Pacific clade among the populations in the Phuket-Thailand region, South-East Asia and Australia, and two of these populations also showed genetic signals of recent range expansions. Our results show that climatic fluctuations during the Plio-Pleistocene generated high levels of cryptic genetic diversity in H. curtus, and add to similar findings for diverse other marine groups in the IAA.

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Section: Discussionmentioning

confidence: 99%

Multilocus phylogeography of the sea snake Hydrophis curtus reveals historical vicariance and cryptic lineage diversity

Ukuwela

Silva²,

Mumpuni

et al. 2014

Zoologica Scripta

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“…Hydrophis platurus is found both in the Pacific and Indian Oceans, and a few specimens have been observed in the Atlantic Ocean (Bessesen & Galbreath, 2017;Branch, 1998). Other species, such as H. caerulescens, H. cyanocinctus, H. curtus H. ornatus, H. peronii, H. spiralis, and H. stokesii have a very wide distribution in both Asia as well as in the Australian region ((Buzas et al, 2019;David & Ineich, 1999;Gritis & Voris, 1990;Ineich & Rasmussen, 1997;Rasmussen et al, 2014;Rezaie-Atagholipour et al, 2016). With their wide distribution some viviparous sea snake species have potential for use in existing monitoring programs across these regions.…”

Section: Criterion 4: Higher Taxa Widely Distributed Geographically and Over A Breadth Of Habitatmentioning

confidence: 99%

Viviparous sea snakes can be used as bioindicators for diverse marine environments

Rasmussen

Hay‐Schmidt

Boneka

et al. 2021

Philippine Journal of Systematic Biology

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Shallow tropical marine ecosystems are under great anthropogenic pressure due to habitat destruction, overfishing, shrimping, climate change, and tourism. This is an issue of global concern as such environments hold a tremendous biodiversity much of which remains to be described. The present situation urgently calls for time- and resource-efficient methods to identify and delineate the most valuable remaining areas and to set up priorities for their management and conservation. Using indicator species can be a way to accomplish this goal. In this paper we evaluate whether viviparous sea snakes can serve as bioindicators for other rare or cryptic tropical marine fauna. Based on seven generally acknowledged criteria for bioindicators, we argue that using viviparous sea snakes as bioindicators can help monitoring marine habitats to gauge the effects of climate change, habitat change and loss, decline in biodiversity and other anthropogenic changes. However, to maximize their efficacy as bioindicators, deeper knowledge about viviparous sea snakes natural history is urgently needed. Topics for expanded research programs include the taxonomy of some groups, their breeding and feeding biology, habitat selection and their geographical distribution. Despite these gaps in our understanding, we argue that viviparous sea snakes can be utilized as bioindicators of marine ecosystem health. KEYWORDS: anthropogenic changes, conservation, herpetology, marine habitat, monitoring

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“…Remarks: One of the most frequently caught sea snakes by trawling boats in Asia. Lapemis hardwickii is a synonym of L. curtus (Gritis & Voris, 1990) Laticauda Laurenti Laticauda colubrina (Schneider): (McCarthy, 1986;Heatwole et al, 2005;Kharin, 2006).…”

Section: Lapemis Graymentioning

confidence: 99%

Sea snakes (Serpentes: subfamilies Hydrophiinae and Laticaudinae) in Vietnam: a comprehensive checklist and an updated identification key

Rasmussen

Elmberg

Gravlund

et al. 2011

Zootaxa

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Sea snakes (Elapidae, subfamilies Hydrophiinae and Laticaudinae) reach a very high species richness in Southeast Asia, but most countries in the region still lack comprehensive and up-to-date identification tools for these snakes. We present an updated checklist of sea snakes in Vietnam. We also provide diagnostic characters for all species and a new complete identification key, chiefly based on easy-to-use external characters. The checklist and key cover the 25 species documented from Vietnam, as well as three likely future additions to its sea snake fauna. By surveying incoming fishing vessels between Nha Trang and the mouth of Mekong River in 2000–2001, we were able to document two species new for Vietnamese waters: Hydrophis belcheri and H. pachycercos. Through these surveys we also secured four specimens of the rare endemic species H. parviceps, formerly known only from two specimens. A comprehensive bibliography of the literature treating sea snakes in Vietnamese waters is provided.Identification key: bibliography, biodiversity, diagnostic characters, Vietnamese waters

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Variability and significance of parietal and ventral scales in the marine snakes of the genus Lapemis (Serpentes, Hydrophiidae), with comments on the occurance of spiny scales in the genus / Paul Gritis, Harold K. Voris.

Abstract: Literature Cited 11 Appendix 13 3. Ventral scale states in Lapemis 3 4. Dorsum of head of Australian Lapemis showing fragmented parietal scales 3 5. Frequency distributions of parietal scale

Cited by 5 publications

References 14 publications

Multilocus phylogeography of the sea snake Hydrophis curtus reveals historical vicariance and cryptic lineage diversity

Multilocus phylogeography of the sea snake Hydrophis curtus reveals historical vicariance and cryptic lineage diversity

Viviparous sea snakes can be used as bioindicators for diverse marine environments

Sea snakes (Serpentes: subfamilies Hydrophiinae and Laticaudinae) in Vietnam: a comprehensive checklist and an updated identification key

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