Species composition and diversity of fish larvae in the Subtropical Convergence Zone of the Sargasso Sea from morphology and DNA barcoding
Abstract Specific regions of otherwise oligotrophic oceans seem to attract fish spawning and sustain significant abundances of fish larvae. The Sargasso Sea in the North Atlantic subtropical gyre is known as the spawning area of the Atlantic eels, but numerous other fish species also spawn in the ar...
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crwiley:10.1111/fog.12136 2024-06-23T07:45:34+00:00 Species composition and diversity of fish larvae in the Subtropical Convergence Zone of the Sargasso Sea from morphology and DNA barcoding Ayala, Daniel Riemann, Lasse Munk, Peter Knud Højgaards Fond Danish Natural Sciences Research Council Nordea Fond Villum Kann Rasmussen Fond Elisabeth and Knud Petersens Fond Dansk Expeditions Fond Danish Agency for Science Technology and Innovation 2015 http://dx.doi.org/10.1111/fog.12136 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffog.12136 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fog.12136 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Oceanography volume 25, issue 1, page 85-104 ISSN 1054-6006 1365-2419 journal-article 2015 crwiley https://doi.org/10.1111/fog.12136 2024-06-04T06:35:18Z Abstract Specific regions of otherwise oligotrophic oceans seem to attract fish spawning and sustain significant abundances of fish larvae. The Sargasso Sea in the North Atlantic subtropical gyre is known as the spawning area of the Atlantic eels, but numerous other fish species also spawn in the area. In order to evaluate spatial variability of larval fish in the region, we examined species diversity, composition and abundances at eight stations in the Subtropical Convergence Zone ( STCZ ) using morphological identification and DNA barcoding. From a total of approximately 3500 specimens collected, at least 154 species from 50 families could be identified. The family Myctophidae had the highest species richness, with at least 32 species represented. The myctophids Lepidophanes gaussi , Bolinichthys indicus , Notolychnus valdiviae and Ceratoscopelus warmingii were the four most abundant species. Other common species included the three eels: Nemichthys scolopaceus , Ariosoma balearicum and Anguilla anguilla . Larval fish species composition differed substantially between the relatively closely spaced stations on either side of prominent hydrographic fronts in the study area, presumably because of the strong environmental gradients. Common eel species were concentrated between the fronts whereas common myctophids were of highest abundance at the outer edges of the fronts. The abundances of most species were generally enhanced in the vicinity of the fronts. The use of combined morphological and DNA ‐barcoding identification methods facilitated species identification, and we could document substantially higher levels and a larger degree of spatial variability in species diversity of fish larvae than previously shown for oligotrophic ocean areas. Article in Journal/Newspaper Anguilla anguilla North Atlantic Wiley Online Library Fisheries Oceanography 25 1 85 104 |
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English |
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Abstract Specific regions of otherwise oligotrophic oceans seem to attract fish spawning and sustain significant abundances of fish larvae. The Sargasso Sea in the North Atlantic subtropical gyre is known as the spawning area of the Atlantic eels, but numerous other fish species also spawn in the area. In order to evaluate spatial variability of larval fish in the region, we examined species diversity, composition and abundances at eight stations in the Subtropical Convergence Zone ( STCZ ) using morphological identification and DNA barcoding. From a total of approximately 3500 specimens collected, at least 154 species from 50 families could be identified. The family Myctophidae had the highest species richness, with at least 32 species represented. The myctophids Lepidophanes gaussi , Bolinichthys indicus , Notolychnus valdiviae and Ceratoscopelus warmingii were the four most abundant species. Other common species included the three eels: Nemichthys scolopaceus , Ariosoma balearicum and Anguilla anguilla . Larval fish species composition differed substantially between the relatively closely spaced stations on either side of prominent hydrographic fronts in the study area, presumably because of the strong environmental gradients. Common eel species were concentrated between the fronts whereas common myctophids were of highest abundance at the outer edges of the fronts. The abundances of most species were generally enhanced in the vicinity of the fronts. The use of combined morphological and DNA ‐barcoding identification methods facilitated species identification, and we could document substantially higher levels and a larger degree of spatial variability in species diversity of fish larvae than previously shown for oligotrophic ocean areas. |
author2 |
Knud Højgaards Fond Danish Natural Sciences Research Council Nordea Fond Villum Kann Rasmussen Fond Elisabeth and Knud Petersens Fond Dansk Expeditions Fond Danish Agency for Science Technology and Innovation |
format |
Article in Journal/Newspaper |
author |
Ayala, Daniel Riemann, Lasse Munk, Peter |
spellingShingle |
Ayala, Daniel Riemann, Lasse Munk, Peter Species composition and diversity of fish larvae in the Subtropical Convergence Zone of the Sargasso Sea from morphology and DNA barcoding |
author_facet |
Ayala, Daniel Riemann, Lasse Munk, Peter |
author_sort |
Ayala, Daniel |
title |
Species composition and diversity of fish larvae in the Subtropical Convergence Zone of the Sargasso Sea from morphology and DNA barcoding |
title_short |
Species composition and diversity of fish larvae in the Subtropical Convergence Zone of the Sargasso Sea from morphology and DNA barcoding |
title_full |
Species composition and diversity of fish larvae in the Subtropical Convergence Zone of the Sargasso Sea from morphology and DNA barcoding |
title_fullStr |
Species composition and diversity of fish larvae in the Subtropical Convergence Zone of the Sargasso Sea from morphology and DNA barcoding |
title_full_unstemmed |
Species composition and diversity of fish larvae in the Subtropical Convergence Zone of the Sargasso Sea from morphology and DNA barcoding |
title_sort |
species composition and diversity of fish larvae in the subtropical convergence zone of the sargasso sea from morphology and dna barcoding |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1111/fog.12136 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffog.12136 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fog.12136 |
genre |
Anguilla anguilla North Atlantic |
genre_facet |
Anguilla anguilla North Atlantic |
op_source |
Fisheries Oceanography volume 25, issue 1, page 85-104 ISSN 1054-6006 1365-2419 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/fog.12136 |
container_title |
Fisheries Oceanography |
container_volume |
25 |
container_issue |
1 |
container_start_page |
85 |
op_container_end_page |
104 |
_version_ |
1802640972732956672 |