Geographical Variation in Fundulus heteroclitus: Tests for Concordance Between Egg and Adult Morphologies
Recent studies have shown distinct patterns of variation in the egg morphology (oil droplet number, diameter and density of chorionic filaments) of Fundulus heteroclitus along the east coast (including Chesapeake and Delaware bays). We tested the hypothesis that variation in adult morphology and in...
Published in: | American Zoologist |
---|---|
Main Authors: | , |
Format: | Text |
Language: | English |
Published: |
Oxford University Press
1986
|
Subjects: | |
Online Access: | http://icb.oxfordjournals.org/cgi/content/short/26/1/145 https://doi.org/10.1093/icb/26.1.145 |
id |
fthighwire:oai:open-archive.highwire.org:icbiol:26/1/145 |
---|---|
record_format |
openpolar |
spelling |
fthighwire:oai:open-archive.highwire.org:icbiol:26/1/145 2023-05-15T17:22:44+02:00 Geographical Variation in Fundulus heteroclitus: Tests for Concordance Between Egg and Adult Morphologies ABLE, KENNETH W. FELLEY, JAMES D. 1986-01-01 00:00:00.0 text/html http://icb.oxfordjournals.org/cgi/content/short/26/1/145 https://doi.org/10.1093/icb/26.1.145 en eng Oxford University Press http://icb.oxfordjournals.org/cgi/content/short/26/1/145 http://dx.doi.org/10.1093/icb/26.1.145 Copyright (C) 1986, The Society for Integrative and Comparative Biology Articles TEXT 1986 fthighwire https://doi.org/10.1093/icb/26.1.145 2013-05-27T13:35:03Z Recent studies have shown distinct patterns of variation in the egg morphology (oil droplet number, diameter and density of chorionic filaments) of Fundulus heteroclitus along the east coast (including Chesapeake and Delaware bays). We tested the hypothesis that variation in adult morphology and in electromorphs is concordant with that of egg morphology over the same range by subjecting data for these character sets to the Mantel test. This analysis was based on data for three egg characters, nineteen adult morphological (meristic and morphometric) characters and five protein characters from locations along the Atlantic coast. If the geographical differences observed among locations reflect genetic differences between two forms that have established secondary contact after isolation, we would expect general concordance between the different character sets. We would expect little concordance between the sets if they are each affected by different selectional and/or developmental responses to environmental regimes. Our analyses indicate that patterns of variation among localities for meristic, egg, and genetic character sets are all concordant, and thus the observed differences among locations are likely the result of secondary intergradation between two previously isolated forms. These conclusions are supported by similar patterns of geographical variation in spawning site preference and body coloration. Thus, these results support our earlier suggestion that these morphs should be treated as separate taxa, with F. h. heteroclitus occurring along the east coast from New Jersey south to Florida including lower Chesapeake and Delaware bays and F. h. macrolepidotus distributed from Connecticut north to Newfoundland with disjunct populations in upper Chesapeake and Delaware bays. Intergrade zones occur where the two morphs come together along the east coast in northern New Jersey and on Long Island, as well as in Chesapeake and Delaware bays Text Newfoundland HighWire Press (Stanford University) Long Island American Zoologist 26 1 145 157 |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Articles |
spellingShingle |
Articles ABLE, KENNETH W. FELLEY, JAMES D. Geographical Variation in Fundulus heteroclitus: Tests for Concordance Between Egg and Adult Morphologies |
topic_facet |
Articles |
description |
Recent studies have shown distinct patterns of variation in the egg morphology (oil droplet number, diameter and density of chorionic filaments) of Fundulus heteroclitus along the east coast (including Chesapeake and Delaware bays). We tested the hypothesis that variation in adult morphology and in electromorphs is concordant with that of egg morphology over the same range by subjecting data for these character sets to the Mantel test. This analysis was based on data for three egg characters, nineteen adult morphological (meristic and morphometric) characters and five protein characters from locations along the Atlantic coast. If the geographical differences observed among locations reflect genetic differences between two forms that have established secondary contact after isolation, we would expect general concordance between the different character sets. We would expect little concordance between the sets if they are each affected by different selectional and/or developmental responses to environmental regimes. Our analyses indicate that patterns of variation among localities for meristic, egg, and genetic character sets are all concordant, and thus the observed differences among locations are likely the result of secondary intergradation between two previously isolated forms. These conclusions are supported by similar patterns of geographical variation in spawning site preference and body coloration. Thus, these results support our earlier suggestion that these morphs should be treated as separate taxa, with F. h. heteroclitus occurring along the east coast from New Jersey south to Florida including lower Chesapeake and Delaware bays and F. h. macrolepidotus distributed from Connecticut north to Newfoundland with disjunct populations in upper Chesapeake and Delaware bays. Intergrade zones occur where the two morphs come together along the east coast in northern New Jersey and on Long Island, as well as in Chesapeake and Delaware bays |
format |
Text |
author |
ABLE, KENNETH W. FELLEY, JAMES D. |
author_facet |
ABLE, KENNETH W. FELLEY, JAMES D. |
author_sort |
ABLE, KENNETH W. |
title |
Geographical Variation in Fundulus heteroclitus: Tests for Concordance Between Egg and Adult Morphologies |
title_short |
Geographical Variation in Fundulus heteroclitus: Tests for Concordance Between Egg and Adult Morphologies |
title_full |
Geographical Variation in Fundulus heteroclitus: Tests for Concordance Between Egg and Adult Morphologies |
title_fullStr |
Geographical Variation in Fundulus heteroclitus: Tests for Concordance Between Egg and Adult Morphologies |
title_full_unstemmed |
Geographical Variation in Fundulus heteroclitus: Tests for Concordance Between Egg and Adult Morphologies |
title_sort |
geographical variation in fundulus heteroclitus: tests for concordance between egg and adult morphologies |
publisher |
Oxford University Press |
publishDate |
1986 |
url |
http://icb.oxfordjournals.org/cgi/content/short/26/1/145 https://doi.org/10.1093/icb/26.1.145 |
geographic |
Long Island |
geographic_facet |
Long Island |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
http://icb.oxfordjournals.org/cgi/content/short/26/1/145 http://dx.doi.org/10.1093/icb/26.1.145 |
op_rights |
Copyright (C) 1986, The Society for Integrative and Comparative Biology |
op_doi |
https://doi.org/10.1093/icb/26.1.145 |
container_title |
American Zoologist |
container_volume |
26 |
container_issue |
1 |
container_start_page |
145 |
op_container_end_page |
157 |
_version_ |
1766109570053177344 |