Use of frequency analysis methods to estimate growth of anchovy (Engraulis encrasicolus L. 1758) in the Gulf of Cadiz (SW Spain)

J M Bellido, G J Pierce, J L Romero, M Millan

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

This paper presents the first estimates of growth parameters for anchovy, Engraulis encrasicolus in the Gulf of Cadiz (SW Spain). Time series of monthly length frequency samples from 1989 to 1993, collected in three fishery ports of the Gaditanian Coast were used. The seasonal von Bertalanffy growth model and length frequency analysis methods were applied to estimate anchovy growth parameters L-infinity k, C and t(s) by the use of ELEFAN I and Powell-Wheterall methods. The mean parameter estimates were L-infinity=18.95 and k=0.90 per years by ELEFAN I and L-infinity=18.69 and k=0.90 per years by Powell-Wheterall method. Length-age keys were estimated and used to describe fishery trends. Length at one-year old was estimated to be between 11.14 and 11.31 cm. Results suggest that this stock is primarily supported by the smallest age groups, showing a strong dependence on recruitment. (C) 2000 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)107-115
Number of pages9
JournalFisheries Research
Volume48
Publication statusPublished - 2000

Keywords

  • anchovy
  • Engraulis encrasicolus
  • age and growth
  • seasonal dependence
  • Gulf of Cadiz
  • MEDITERRANEAN-SEA
  • ADRIATIC SEA
  • BLACK-SEA
  • FISHERIES
  • BAY
  • POPULATIONS
  • BISCAY
  • WATERS
  • MODEL

Cite this

Use of frequency analysis methods to estimate growth of anchovy (Engraulis encrasicolus L. 1758) in the Gulf of Cadiz (SW Spain). / Bellido, J M ; Pierce, G J ; Romero, J L ; Millan, M .

In: Fisheries Research, Vol. 48, 2000, p. 107-115.

Research output: Contribution to journalArticle

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abstract = "This paper presents the first estimates of growth parameters for anchovy, Engraulis encrasicolus in the Gulf of Cadiz (SW Spain). Time series of monthly length frequency samples from 1989 to 1993, collected in three fishery ports of the Gaditanian Coast were used. The seasonal von Bertalanffy growth model and length frequency analysis methods were applied to estimate anchovy growth parameters L-infinity k, C and t(s) by the use of ELEFAN I and Powell-Wheterall methods. The mean parameter estimates were L-infinity=18.95 and k=0.90 per years by ELEFAN I and L-infinity=18.69 and k=0.90 per years by Powell-Wheterall method. Length-age keys were estimated and used to describe fishery trends. Length at one-year old was estimated to be between 11.14 and 11.31 cm. Results suggest that this stock is primarily supported by the smallest age groups, showing a strong dependence on recruitment. (C) 2000 Elsevier Science B.V. All rights reserved.",
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AU - Pierce, G J

AU - Romero, J L

AU - Millan, M

PY - 2000

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N2 - This paper presents the first estimates of growth parameters for anchovy, Engraulis encrasicolus in the Gulf of Cadiz (SW Spain). Time series of monthly length frequency samples from 1989 to 1993, collected in three fishery ports of the Gaditanian Coast were used. The seasonal von Bertalanffy growth model and length frequency analysis methods were applied to estimate anchovy growth parameters L-infinity k, C and t(s) by the use of ELEFAN I and Powell-Wheterall methods. The mean parameter estimates were L-infinity=18.95 and k=0.90 per years by ELEFAN I and L-infinity=18.69 and k=0.90 per years by Powell-Wheterall method. Length-age keys were estimated and used to describe fishery trends. Length at one-year old was estimated to be between 11.14 and 11.31 cm. Results suggest that this stock is primarily supported by the smallest age groups, showing a strong dependence on recruitment. (C) 2000 Elsevier Science B.V. All rights reserved.

AB - This paper presents the first estimates of growth parameters for anchovy, Engraulis encrasicolus in the Gulf of Cadiz (SW Spain). Time series of monthly length frequency samples from 1989 to 1993, collected in three fishery ports of the Gaditanian Coast were used. The seasonal von Bertalanffy growth model and length frequency analysis methods were applied to estimate anchovy growth parameters L-infinity k, C and t(s) by the use of ELEFAN I and Powell-Wheterall methods. The mean parameter estimates were L-infinity=18.95 and k=0.90 per years by ELEFAN I and L-infinity=18.69 and k=0.90 per years by Powell-Wheterall method. Length-age keys were estimated and used to describe fishery trends. Length at one-year old was estimated to be between 11.14 and 11.31 cm. Results suggest that this stock is primarily supported by the smallest age groups, showing a strong dependence on recruitment. (C) 2000 Elsevier Science B.V. All rights reserved.

KW - anchovy

KW - Engraulis encrasicolus

KW - age and growth

KW - seasonal dependence

KW - Gulf of Cadiz

KW - MEDITERRANEAN-SEA

KW - ADRIATIC SEA

KW - BLACK-SEA

KW - FISHERIES

KW - BAY

KW - POPULATIONS

KW - BISCAY

KW - WATERS

KW - MODEL

M3 - Article

VL - 48

SP - 107

EP - 115

JO - Fisheries Research

JF - Fisheries Research

SN - 0165-7836

ER -