Newt Larvæ in Brackish Water

Hardy, Eric

doi:10.1038/151226a0

Cited by 3 publications

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“…Amphibians are particularly vulnerable to osmotic stress of saline conditions at all their life stages. Nevertheless, it is on record that the Lancashire coastal dune slacks have long been inhabited by the smooth newt (Lissotriton vulgaris), common frog (Rana temporaria), common toad (Bufo bufo), and the natterjack toad (Epidalea calamita) (Hardy, 1943). Furthermore, the closely related L. vulgaris is known to be tolerant of brackish waters as an adult (Speybroeck et al, 2016;Popovic & Veletanlic, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…It is best known as an opportunistic inhabitant of neutral to weakly acidic waterbodies in northern Europe. There are a limited number of observations of other newt species in coastal environments, notably the smooth newt (Lissotriton vulgaris) in sand dunes in northern England (Hardy, 1943) and in a range of habitats on the coast of Croatia (Popovic & Veletanlic, 2018). However, the only record of L. helveticus in a saline environment is from Smith (1951) who associated the species with coastal brackish pools.…”

Section: Introductionmentioning

confidence: 99%

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Persistence of a population of palmate newts Lissotriton helveticus in a saline environment on the west coast of Scotland

Ullman-Smith¹

2021

Herpetological Bulletin

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A six year survey of a palmate newt (Lissotriton helveticus) population in rock pools on the west coast of Scotland indicates that this species has some tolerance of saline conditions. The newts were living with a mean salinity (conductivity) of 382 ppm (range 30.7 ppm to >4995 ppm). Other interesting observations include a variation in mating behaviour, in which normal open water behaviour is confined to crevices, and the occurrence of ‘pelvic bumps’ in some individuals that may indicate reduced body condition.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Persistence of a population of palmate newts Lissotriton helveticus in a saline environment on the west coast of Scotland

Ullman-Smith¹

2021

Herpetological Bulletin

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Newt Larvæ in Brackish Water

Burke¹,

Williams²

1943

Nature

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Osmotic tolerance and habitat of early stegocephalians: indirect evidence from parsimony, taphonomy, palaeobiogeography, physiology and morphology

Laurin

Soler-Gijón

2010

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There are probably many reasons for the widespread belief that temnospondyls and other early stegocephalians were largely restricted to freshwater, but three of the contributing factors will be discussed below. First, temnospondyls have been called amphibians (and thought to be more closely related to extant amphibians than to amniotes). Some authors may have simply concluded that, like extant amphibians, temnospondyls could not live in oceans and seas. Second, under some phylogenies, temnospondyls are more closely related to anurans (and possibly urodeles) than to gymnophionans and could be expected, for parsimony reasons, to share the intolerance of all extant amphibians to saltwater. Similarly, ‘lepospondyls’ are often thought to be more closely related to gymnophionans than to anurans, and could also be expected to lack saltwater tolerance. Third, extant lungfishes live exclusively in freshwater, and early sarcopterygians have long been thought to share this habitat. These interpretations probably explain the widespread belief that early amphibians and early stem-tetrapods were largely restricted to freshwater. However, these three interpretations have been refuted or questioned by recent investigations. A review of the evidence suggests that several (perhaps most) early stegocephalians tolerated saltwater, even although they also lived in freshwater.

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Newt Larvæ in Brackish Water

Cited by 3 publications

References 1 publication

Persistence of a population of palmate newts Lissotriton helveticus in a saline environment on the west coast of Scotland

Persistence of a population of palmate newts Lissotriton helveticus in a saline environment on the west coast of Scotland

Newt Larvæ in Brackish Water

Osmotic tolerance and habitat of early stegocephalians: indirect evidence from parsimony, taphonomy, palaeobiogeography, physiology and morphology

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