Growth, production, and reproduction in bay scallops Argopecten irradians concentricus (Say) from the northern Gulf of Mexico

Research output: Contribution to journalArticleResearchpeer-review

15 Citations (Scopus)

Abstract

The bay scallop, Argopecten irradians, is a commercially and recreationally important fisheries species on the Atlantic and Gulf Coasts of the United States. Surprisingly, little information exists on northern Gulf of Mexico populations. This research assessed growth, production, and reproduction in a population from St. Joseph Bay, Florida. Specifically, scallops exhibited high initial growth rates (Gw day-1), with rates declining as individual size increased. Additionally, significant interannual variability existed for both scallop growth and production. These differences may be attributable, in part, to a reduction in salinity (21‰) associated with Tropical Storm Alberto, which resulted in significantly lower growth rates and a mass mortality event. Reproductive assessment of A. irradians showed significant peaks in spawning condition, gonad weight, and gonadal-somatic index (GSI) during the winter (December, January, February) compared to other seasons. However, the salinity minima in July 1994 (11‰) significantly reduced gonad weight and GSI from winter 1994/1995, suggesting that a single storm event had a dramatic but short-term reproductive impact on the population. Assessment of gonad condition and GSI, coupled with field observations, showed spawning occurred in the spring and fall as well, but the presence of small individuals (<4 mm shell height) during July, August, and September suggests that reproduction may occur throughout the year in St. Joseph Bay, Florida.

Original languageEnglish
Pages (from-to)911-917
Number of pages7
JournalJournal of Shellfish Research
Volume17
Issue number4
StatePublished - 1 Dec 1998

Fingerprint

Argopecten irradians
Gulf of Mexico
gonads
scallops
spawning
salinity
mass mortality
shell (molluscs)
winter
fishery
fisheries
shell
coasts
coast
index
gulf

Keywords

  • Argopecten irradians
  • Gonad weight
  • GSI
  • Gulf of Mexico
  • Salinity effects

Cite this

@article{ce5163c0603747128a0064c3782483e4,
title = "Growth, production, and reproduction in bay scallops Argopecten irradians concentricus (Say) from the northern Gulf of Mexico",
abstract = "The bay scallop, Argopecten irradians, is a commercially and recreationally important fisheries species on the Atlantic and Gulf Coasts of the United States. Surprisingly, little information exists on northern Gulf of Mexico populations. This research assessed growth, production, and reproduction in a population from St. Joseph Bay, Florida. Specifically, scallops exhibited high initial growth rates (Gw day-1), with rates declining as individual size increased. Additionally, significant interannual variability existed for both scallop growth and production. These differences may be attributable, in part, to a reduction in salinity (21‰) associated with Tropical Storm Alberto, which resulted in significantly lower growth rates and a mass mortality event. Reproductive assessment of A. irradians showed significant peaks in spawning condition, gonad weight, and gonadal-somatic index (GSI) during the winter (December, January, February) compared to other seasons. However, the salinity minima in July 1994 (11‰) significantly reduced gonad weight and GSI from winter 1994/1995, suggesting that a single storm event had a dramatic but short-term reproductive impact on the population. Assessment of gonad condition and GSI, coupled with field observations, showed spawning occurred in the spring and fall as well, but the presence of small individuals (<4 mm shell height) during July, August, and September suggests that reproduction may occur throughout the year in St. Joseph Bay, Florida.",
keywords = "Argopecten irradians, Gonad weight, GSI, Gulf of Mexico, Salinity effects",
author = "Paul Bologna",
year = "1998",
month = "12",
day = "1",
language = "English",
volume = "17",
pages = "911--917",
journal = "Journal of Shellfish Research",
issn = "0730-8000",
publisher = "National Shellfisheries Association",
number = "4",

}

Growth, production, and reproduction in bay scallops Argopecten irradians concentricus (Say) from the northern Gulf of Mexico. / Bologna, Paul.

In: Journal of Shellfish Research, Vol. 17, No. 4, 01.12.1998, p. 911-917.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Growth, production, and reproduction in bay scallops Argopecten irradians concentricus (Say) from the northern Gulf of Mexico

AU - Bologna, Paul

PY - 1998/12/1

Y1 - 1998/12/1

N2 - The bay scallop, Argopecten irradians, is a commercially and recreationally important fisheries species on the Atlantic and Gulf Coasts of the United States. Surprisingly, little information exists on northern Gulf of Mexico populations. This research assessed growth, production, and reproduction in a population from St. Joseph Bay, Florida. Specifically, scallops exhibited high initial growth rates (Gw day-1), with rates declining as individual size increased. Additionally, significant interannual variability existed for both scallop growth and production. These differences may be attributable, in part, to a reduction in salinity (21‰) associated with Tropical Storm Alberto, which resulted in significantly lower growth rates and a mass mortality event. Reproductive assessment of A. irradians showed significant peaks in spawning condition, gonad weight, and gonadal-somatic index (GSI) during the winter (December, January, February) compared to other seasons. However, the salinity minima in July 1994 (11‰) significantly reduced gonad weight and GSI from winter 1994/1995, suggesting that a single storm event had a dramatic but short-term reproductive impact on the population. Assessment of gonad condition and GSI, coupled with field observations, showed spawning occurred in the spring and fall as well, but the presence of small individuals (<4 mm shell height) during July, August, and September suggests that reproduction may occur throughout the year in St. Joseph Bay, Florida.

AB - The bay scallop, Argopecten irradians, is a commercially and recreationally important fisheries species on the Atlantic and Gulf Coasts of the United States. Surprisingly, little information exists on northern Gulf of Mexico populations. This research assessed growth, production, and reproduction in a population from St. Joseph Bay, Florida. Specifically, scallops exhibited high initial growth rates (Gw day-1), with rates declining as individual size increased. Additionally, significant interannual variability existed for both scallop growth and production. These differences may be attributable, in part, to a reduction in salinity (21‰) associated with Tropical Storm Alberto, which resulted in significantly lower growth rates and a mass mortality event. Reproductive assessment of A. irradians showed significant peaks in spawning condition, gonad weight, and gonadal-somatic index (GSI) during the winter (December, January, February) compared to other seasons. However, the salinity minima in July 1994 (11‰) significantly reduced gonad weight and GSI from winter 1994/1995, suggesting that a single storm event had a dramatic but short-term reproductive impact on the population. Assessment of gonad condition and GSI, coupled with field observations, showed spawning occurred in the spring and fall as well, but the presence of small individuals (<4 mm shell height) during July, August, and September suggests that reproduction may occur throughout the year in St. Joseph Bay, Florida.

KW - Argopecten irradians

KW - Gonad weight

KW - GSI

KW - Gulf of Mexico

KW - Salinity effects

UR - http://www.scopus.com/inward/record.url?scp=0032410195&partnerID=8YFLogxK

M3 - Article

VL - 17

SP - 911

EP - 917

JO - Journal of Shellfish Research

JF - Journal of Shellfish Research

SN - 0730-8000

IS - 4

ER -