Across-shelf distribution of blue mussel larvae in the northern Gulf of Maine: Consequences for population connectivity and a species range boundary

Philip O. Yund, Charlese E. Tilburg, Michael A McCartney

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Studies of population connectivity have largely focused on along-shelf, as opposed to across-shelf, processes. We hypothesized that a discontinuity in across-shelf mixing caused by the divergence of the Eastern Maine Coastal Current (EMCC) from shore acts as an ecological barrier to the supply of mussel larvae to the coast. Existing data on the relative abundance of two congeneric blue mussels,Mytilus edulisandM. trossulus, were analysed to quantify the association ofM. trossuluswith the colder temperature signal of the EMCC and generate larval distribution predictions. We then sampled the across-shelf distribution of larvae along two transects during 2011. Larvae were identified using restriction digests of PCR amplicons from the mitochondrial 16S rDNA.Mytilus edulislarvae were consistently abundant on either the inshore and offshore transect ends, but not homogeneously distributed across the shelf, whileM. trossuluslarvae were less common throughout the study area. The divergence of the EMCC from shore appears to create a break in the connectivity ofM. edulispopulations by isolating those inshore of the EMCC from upstream larval sources. Across-shelf transport processes can thus produce connectivity patterns that would not be predicted solely on the basis of along-shelf processes.

Original languageEnglish (US)
Article number150513
JournalRoyal Society Open Science
Volume2
Issue number12
DOIs
StatePublished - Dec 2015

Fingerprint

Mytilus edulis
Larva
Mytilus
Population
Bivalvia
Ribosomal DNA
Polymerase Chain Reaction

Keywords

  • Across-shelf mixing
  • Blue mussel
  • Larval transport
  • Population connectivity
  • Range boundary

Cite this

Across-shelf distribution of blue mussel larvae in the northern Gulf of Maine : Consequences for population connectivity and a species range boundary. / Yund, Philip O.; Tilburg, Charlese E.; McCartney, Michael A.

In: Royal Society Open Science, Vol. 2, No. 12, 150513, 12.2015.

Research output: Contribution to journalArticle

@article{d0fe24ffe8ce431b9078577a6f66a2f6,
title = "Across-shelf distribution of blue mussel larvae in the northern Gulf of Maine: Consequences for population connectivity and a species range boundary",
abstract = "Studies of population connectivity have largely focused on along-shelf, as opposed to across-shelf, processes. We hypothesized that a discontinuity in across-shelf mixing caused by the divergence of the Eastern Maine Coastal Current (EMCC) from shore acts as an ecological barrier to the supply of mussel larvae to the coast. Existing data on the relative abundance of two congeneric blue mussels,Mytilus edulisandM. trossulus, were analysed to quantify the association ofM. trossuluswith the colder temperature signal of the EMCC and generate larval distribution predictions. We then sampled the across-shelf distribution of larvae along two transects during 2011. Larvae were identified using restriction digests of PCR amplicons from the mitochondrial 16S rDNA.Mytilus edulislarvae were consistently abundant on either the inshore and offshore transect ends, but not homogeneously distributed across the shelf, whileM. trossuluslarvae were less common throughout the study area. The divergence of the EMCC from shore appears to create a break in the connectivity ofM. edulispopulations by isolating those inshore of the EMCC from upstream larval sources. Across-shelf transport processes can thus produce connectivity patterns that would not be predicted solely on the basis of along-shelf processes.",
keywords = "Across-shelf mixing, Blue mussel, Larval transport, Population connectivity, Range boundary",
author = "Yund, {Philip O.} and Tilburg, {Charlese E.} and McCartney, {Michael A}",
year = "2015",
month = "12",
doi = "10.1098/rsos.150513",
language = "English (US)",
volume = "2",
journal = "Royal Society Open Science",
issn = "2054-5703",
publisher = "The Royal Society",
number = "12",

}

TY - JOUR

T1 - Across-shelf distribution of blue mussel larvae in the northern Gulf of Maine

T2 - Consequences for population connectivity and a species range boundary

AU - Yund, Philip O.

AU - Tilburg, Charlese E.

AU - McCartney, Michael A

PY - 2015/12

Y1 - 2015/12

N2 - Studies of population connectivity have largely focused on along-shelf, as opposed to across-shelf, processes. We hypothesized that a discontinuity in across-shelf mixing caused by the divergence of the Eastern Maine Coastal Current (EMCC) from shore acts as an ecological barrier to the supply of mussel larvae to the coast. Existing data on the relative abundance of two congeneric blue mussels,Mytilus edulisandM. trossulus, were analysed to quantify the association ofM. trossuluswith the colder temperature signal of the EMCC and generate larval distribution predictions. We then sampled the across-shelf distribution of larvae along two transects during 2011. Larvae were identified using restriction digests of PCR amplicons from the mitochondrial 16S rDNA.Mytilus edulislarvae were consistently abundant on either the inshore and offshore transect ends, but not homogeneously distributed across the shelf, whileM. trossuluslarvae were less common throughout the study area. The divergence of the EMCC from shore appears to create a break in the connectivity ofM. edulispopulations by isolating those inshore of the EMCC from upstream larval sources. Across-shelf transport processes can thus produce connectivity patterns that would not be predicted solely on the basis of along-shelf processes.

AB - Studies of population connectivity have largely focused on along-shelf, as opposed to across-shelf, processes. We hypothesized that a discontinuity in across-shelf mixing caused by the divergence of the Eastern Maine Coastal Current (EMCC) from shore acts as an ecological barrier to the supply of mussel larvae to the coast. Existing data on the relative abundance of two congeneric blue mussels,Mytilus edulisandM. trossulus, were analysed to quantify the association ofM. trossuluswith the colder temperature signal of the EMCC and generate larval distribution predictions. We then sampled the across-shelf distribution of larvae along two transects during 2011. Larvae were identified using restriction digests of PCR amplicons from the mitochondrial 16S rDNA.Mytilus edulislarvae were consistently abundant on either the inshore and offshore transect ends, but not homogeneously distributed across the shelf, whileM. trossuluslarvae were less common throughout the study area. The divergence of the EMCC from shore appears to create a break in the connectivity ofM. edulispopulations by isolating those inshore of the EMCC from upstream larval sources. Across-shelf transport processes can thus produce connectivity patterns that would not be predicted solely on the basis of along-shelf processes.

KW - Across-shelf mixing

KW - Blue mussel

KW - Larval transport

KW - Population connectivity

KW - Range boundary

UR - http://www.scopus.com/inward/record.url?scp=84958063999&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84958063999&partnerID=8YFLogxK

U2 - 10.1098/rsos.150513

DO - 10.1098/rsos.150513

M3 - Article

C2 - 27018654

AN - SCOPUS:84958063999

VL - 2

JO - Royal Society Open Science

JF - Royal Society Open Science

SN - 2054-5703

IS - 12

M1 - 150513

ER -