Squid in the antarctic and subantarctic, their biology and ecology

• Other Authors: JACKSON, GEORGE D. (hasPrincipalInvestigator), JACKSON, GEORGE D. (processor), JARMAN, SIMON (processor), Australian Antarctic Data Centre (publisher)
• Format: Dataset
• Language: unknown
• Published: Australian Antarctic Data Centre
• Subjects: biota; oceans; ANIMALS/INVERTEBRATES; EARTH SCIENCE; BIOLOGICAL CLASSIFICATION; POPULATION DYNAMICS; BIOSPHERE; ECOLOGICAL DYNAMICS; SPECIES/POPULATION INTERACTIONS; GENETIC DIFFERENTIATION; GENETICS; MOROTEUTHIS INGENS; RAPD; SQUID; TRAWL; SHIPS; OCEAN > SOUTHERN OCEAN; ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN > FALKLAND ISLANDS; SOUTHERN OCEAN > MACQUARIE ISLAND; CONTINENT > ANTARCTICA; GEOGRAPHIC REGION > POLAR; Antarctic; Southern Ocean; The Antarctic; Antarc*; Antarctica; Macquarie Island; South Atlantic Ocean
• Online Access: https://researchdata.ands.org.au/squid-antarctic-subantarctic-biology-ecology/699698; https://data.aad.gov.au/metadata/records/ASAC_1340; http://nla.gov.au/nla.party-617536

From the abstract of the referenced paper: Randomly amplified polymorphic DNA markers (RAPDs) were applied in a cephalopod population study. Samples of the squid Moroteuthis ingens taken from around the Falkland Islands and Macquarie Island were used to test a null hypothesis that M. ingens forms a single, panmictic population in the Southern Ocean. Six of the 8 arbitrary RAPD primers screened produced a total of 30 reproducible polymorphic bands. Analysis of RAPD allele frequencies demonstrated high levels of variation between individuals but little variation between two sample sites. Although the differentiation between the two sites was low, subtle population structure was detected and the null hypothesis was rejected. The implications of low genetic differentiation between the two sites are briefly discussed in terms of possible egg and para-larval drift facilitated via the circumpolar current. The PDF document available for download also includes a number of data tables. See also ASAC project 1242 (ASAC_1242), Biology of Southern Ocean squid, ecological importance and potential commercial implications - a preliminary assessment.