Synchronicity in southern hemisphere squid stocks and the influence of the Southern Oscillation and Trans Polar Index
Squid are short lived, with highly labile populations
that respond rapidly to changes in environmental
conditions. This makes them a good model for
studying the response of recruitment processes to
environmental signals. This study examines the
influence of the Southern Oscillation Index (SOI) and
Trans Polar Index (TPI) on the environment and
abundance of six species of commercially important
squid from the southern hemisphere, all linked to
major current systems connected by the Antarctic
Circumpolar Current: Dosidicus gigas (Southeast
Pacific), Loligo vulgaris reynaudii (Southeast Atlantic),
Nototodarus sloanii, N. gouldi (Southwest Pacific),
Illex argentinus and L. gahi (Southwest Atlantic). All
fisheries displayed a high level of inter-annual variability
and a degree of synchronicity was seen to occur
in the abundance of the three Pacific species. The
SOI signal was reflected in the environment of each
fishery, particularly in Pacific regions. Both indices are
correlated with squid abundance, particularly during
the early life history stages (SOI) and adult stages
(TPI), suggesting some degree of latitudinal separation,
with juveniles potentially influenced by environmental
variability at lower latitudes and adults at
higher latitudes.
This website uses cookies to improve your experience. We'll assume you're okay with this, but you can opt-out if you wish.AcceptRead more
Privacy & Cookies Policy
Privacy Overview
This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.