NDLI: Nonrandom variation of morphological traits across environmental gradients in a land snail

Content Provider	Springer Nature Link
Author	Giokas, Sis Páll Gergely, Barna Mettouris, Oufrios
Copyright Year	2013
Abstract	Morphological variation is often attributed to differential adaptations to diverse habitats, but adaptations to a similar environment do not necessarily result in similar phenotypes. Adaptations for water and heat budget are crucial for organisms living in arid habitats, and in snails, variation in shell morphology has been frequently attributed to selection by stressful environmental factors. However, their phenotypic divergence often is not accompanied by a relevant niche differentiation and consistent relationships with environmental correlates are lacking. In the pulmonate genus Albinaria, there is great size and shape variation between and within species, and there are two major shell sculpture morphotypes, ribbed and smooth. We used 62 populations of 28 Albinaria species, taking into account their phylogeny, to examine the variation of shell traits (sculpture, size, shape), their effect on water and heat budget, and their association with geographical and climatic gradients. We found unambiguous size and shape discrimination between the two morphotypes. Ribbed shells are lighter, taller, and slimmer and have a smaller aperture than the smooth ones. Moreover, significant correlations between shell traits and heat/moisture budget and climate/geography were revealed. Ribbed and taller shells retain more water on their shell surface, and on the other hand, smooth shells exhibit lower water permeability. Therefore, two strategies are being used to prevent water loss, active retention or resistance to loss. Consequently, different alternative solutions evolved and were retained as responses to the same stressful factor by the two distinct shell morphotypes. Larger shells occur in southern latitudes, mostly on islands, and at sites where there is a shortage of rainfall. Therefore, the variation of the examined traits is nonrandom with respect to location and to climate and their evolution can be attributed to selection by environmental factors, with water availability being the key driving agent of body-size variation.
Starting Page	323
Ending Page	340
Page Count	18
File Format	PDF
ISSN	02697653
Journal	Evolutionary Ecology
Volume Number	28
Issue Number	2
e-ISSN	15738477
Language	English
Publisher	Springer International Publishing
Publisher Date	2013-09-27
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sculpture Size Shape Adaptation Tradeoff Environmental gradients Evolutionary Biology Plant Sciences Human Genetics
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Adaptation of flowering phenology and fitness-related traits across environmental gradients in the widespread Campanula rotundifolia

Lifestyle-Based Approaches Provide Insights into Body Size Variation Across Environmental Gradients in Anurans

Geographical variation in growth form traits in Quercus suber and its relation to population evolutionary history

The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk Nucella lapillus

Assessing the conservation status of the land snail Oreohelix peripherica wasatchensis (Family Oreohelicidae)

On size and area: Patterns of mammalian body size extremes across landmasses

Rapid evolutionary responses in a translocated population of intertidal snail (Bembicium vittatum) utilise variation from different source populations

Is Large Body Size always Advantageous for Terrestrial Adaptation?

Ecogeographic analysis of morphological and life-history variation in the Italian treefrog

Nonrandom variation of morphological traits across environmental gradients in a land snail

Similar Documents

Adaptation of flowering phenology and fitness-related traits across environmental gradients in the widespread Campanula rotundifolia

Lifestyle-Based Approaches Provide Insights into Body Size Variation Across Environmental Gradients in Anurans

Geographical variation in growth form traits in Quercus suber and its relation to population evolutionary history

The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk Nucella lapillus

Assessing the conservation status of the land snail Oreohelix peripherica wasatchensis (Family Oreohelicidae)

On size and area: Patterns of mammalian body size extremes across landmasses

Rapid evolutionary responses in a translocated population of intertidal snail (Bembicium vittatum) utilise variation from different source populations

Is Large Body Size always Advantageous for Terrestrial Adaptation?

Ecogeographic analysis of morphological and life-history variation in the Italian treefrog

Nonrandom variation of morphological traits across environmental gradients in a land snail