Autumn larval fish assemblages in the northwest African Atlantic coastal zone

Hinde Abdelouahab; Amina Berraho; Tarik Baibai; Aziz Agouzouk; Ahmed Makaoui; Ahmed Errhif

doi:10.1007/s00343-017-5302-7

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Autumn larval fish assemblages in the northwest African Atlantic coastal zone

OriginalPaper | Updated：2023-05-16

- Autumn larval fish assemblages in the northwest African Atlantic coastal zone
- Autumn larval fish assemblages in the northwest African Atlantic coastal zone
- 海洋湖沼学报（英文） 2017年35卷第3期页码：515-527
- Affiliations：
  
  1. Faculty of Sciences Ain Chock Hassan II University Maarif
  2. National Institute of Halieutic Research
- Author bio：
- Funds：
  
  Supported by the Moroccan-Norwegian scientific team that participated in the survey on aboard the R/V;Dr Fridtjof Nansen;in the context of the regional project CCLME “Canary Current Large Marine Ecosystem”
- DOI：10.1007/s00343-017-5302-7
  中图分类号：
- 网络首发：2016-06-14，
  
  纸质出版：2017
- Accepted：
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Autumn larval fish assemblages in the northwest African Atlantic coastal zone[J]. 海洋湖沼学报（英文）, 2017,35(3):515-527.

Abdelouahab, H., Berraho, A., Baibai, T. et al. Autumn larval fish assemblages in the northwest African Atlantic coastal zone., Chin. J. Ocean. Limnol. 35, 515–527 (2017). https://doi.org/10.1007/s00343-017-5302-7
Autumn larval fish assemblages in the northwest African Atlantic coastal zone[J]. 海洋湖沼学报（英文）, 2017,35(3):515-527. DOI： 10.1007/s00343-017-5302-7.

Abdelouahab, H., Berraho, A., Baibai, T. et al. Autumn larval fish assemblages in the northwest African Atlantic coastal zone., Chin. J. Ocean. Limnol. 35, 515–527 (2017). https://doi.org/10.1007/s00343-017-5302-7 DOI：

摘要

Abstract

A study on the assemblage composition and vertical distribution of larval fish was conducted in the southern area of the Moroccan Atlantic coast in Autumn 2011. A total of 1 680 fish larvae taxa were identified from 21 families. The majority of the larvae were present in the upper layers. Clupeids were the most abundant larvae taxa followed by Myctophidae

Gadidae and Sparidae

hence the larval fish assemblages (LFA) were variable in diff erent depth layers. Total fish larvae showed a preference for surface layers

and were mainly found above 75 m depth

with some exceptions. The maximum concentration of fish larvae was concentrated up to 25 m essentially above the thermocline

where chlorophyll a and mesozooplankton were abundant. Spatially

neritic families were located near the coast and at some off shore stations especially in the northern part

while oceanic families were more distributed towards off shore along the study area. Cluster analysis showed a segregation of two groups of larvae. However

a clear separation between neritic families and oceanic families was not found. Multivariate analysis highlighted the relationship between the distribution of larvae of diff erent families and environmental parameters. Temperature and salinity seem to have been the factors that acted on associations of fish larvae. Day/night vertical distributions suggest there was not a very significant vertical migration

probably due to adequate light levels for feeding.

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references

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