Influences of environmental variables on the weight-length relationship of the shrimp Xiphopenaeus kroyeri: Do variations occur along time?

This study analyzes the influences of environmental variables on the weight-length relationship of the penaeid shrimp Xiphopenaeus kroyeri during nine consecutive years (2005 to 2013) in northern Rio de Janeiro State. The main questions raised are: i) Does species relative growth vary along time? an...

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Bibliographic Details
Published in:Anais da Academia Brasileira de Ciências 2022, Vol.94 (1), p.e20201050-e20201050
Main Authors: Beneditto, Ana Paula M DI, Fernandes, Laís P, Pestana, Inácio A
Format: Article
Language:English
Subjects:
Animals
Atlantic Ocean
Brazil
environmental features
Female
fishery
Male
morphometric relationships
MULTIDISCIPLINARY SCIENCES
Penaeidae
Salinity
seabob shrimp
Temperature
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Summary:This study analyzes the influences of environmental variables on the weight-length relationship of the penaeid shrimp Xiphopenaeus kroyeri during nine consecutive years (2005 to 2013) in northern Rio de Janeiro State. The main questions raised are: i) Does species relative growth vary along time? and ii) How are the environmental variables sea surface temperature, salinity, chlorophyll-a and/or organic matter related to the relative growth? For males, the long-term mean of the allometric coefficient stayed 3 (immature: 3.08; mature: 3.10). The sine-consine models highlighted the wave T period in which the allometric coefficient values complete one cycle of increase-decrease: 4.72 years and 14.72 years for immatures female and male, respectively; and 9.08 years and 9.98 years for matures male and females, respectively. The relative growth behavior varies in a predictable time scale; however, none of the environmental variables strongly supported the variation. Changes in the relative growth behavior are probably drive by intrinsic mechanisms to maintain the population locally.
ISSN:0001-3765
1678-2690
1678-2690
DOI:10.1590/0001-3765202220201050