Overview

Comprehensive Description

Biology

Schooling by size and maturing from January through April. Flesh is light-colored of delicate flavor and good canning quality.
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Distribution

Range Description

This species is found in the temperate southwest Pacific, ranging around southeastern Australia, Norfolk Island and northern New Zealand.
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Distribution

New Zealand Exclusive Economic Zone
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Southwest Pacific: southeastern Australia, Norfolk Island and New Zealand.
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Physical Description

Morphology

Dorsal spines (total): 17 - 19; Dorsal soft rays (total): 13 - 18; Analspines: 0; Analsoft rays: 14 - 17; Vertebrae: 45 - 46
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Size

Maximum size: 1000 mm FL
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Max. size

180 cm FL (male/unsexed; (Ref. 40637)); max. published weight: 9,400 g (Ref. 168)
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Diagnostic Description

Mouth moderately large. Interpelvic process small and bifid. Swim bladder absent. Laminae of olfactory rosette 21 to 39. Spleen large and prominent in lateral view. Liver with elongate left and right lobes and a short middle lobe. Body completely covered with very small scales posterior to the corselet. Dorsal stripe closer to being horizontal than in other species of Sarda and extending up to the belly in some specimens.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is pelagic and oceanodromous. It schools by size and matures from January through April. It is found in schools in the inshore coastal waters of Queensland and feeds on various fish (Yoshida 1980). This species biology is not well known.

Maximum Size is 100 cm fork length (FL). The all-tackle angling record is a 9.4 kg fish caught off Montague Island, New South Wales in 1978 (IGFA 2011).

Systems
  • Marine
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Environment

pelagic-neritic; oceanodromous (Ref. 51243); marine
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Migration

Oceanodromous. Migrating within oceans typically between spawning and different feeding areas, as tunas do. Migrations should be cyclical and predictable and cover more than 100 km.
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Trophic Strategy

Schools by size. Juveniles and adults may be cannibalistic. Little is known about the biology of this species.
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Diseases and Parasites

Caligus Infestation 2. Parasitic infestations (protozoa, worms, etc.)
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Sarda australis

The following is a representative barcode sequence, the centroid of all available sequences for this species. 

 
There are 4 barcode sequences available from BOLD and GenBank.  Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen and other sequences.
 
FOA806-04|BW-A806|Sarda australis| ------------------------------------------CTTTATCTAGTATTTGGTGCATGAGCTGGAATAGTTGGCACAGCCCTA---AGCTTGCTTATTCGAGCTGAACTAAGCCAACCCGGTGCCCTTCTTGGGGAC---GACCAGATCTACAATGTAATCGTTACGGCCCATGCCTTCGTAATGATTTTCTTTATAGTAATACCAATTATGATCGGAGGGTTTGGAAACTGACTCATCCCCCTAATG---ATCGGGGCCCCCGACATAGCATTCCCCCGAATGAACAACATGAGCTTTTGACTCCTTCCCCCTTCTTTCCTTCTACTCCTTGCCTCTTCTGGGGTCGAAGCCGGTGCCGGAACCGGTTGAACAGTCTACCCGCCCCTTGCTGGTAATCTAGCTCACGCCGGAGCATCAGTTGACTTA---ACTATTTTTTCCCTACACTTAGCAGGTGTTTCCTCAATTCTTGGGGCAATTAACTTCATCACAACGATTATTAACATGAAACCCGCAGCTATCTCCCAATATCAAACACCCCTCTTTGTATGGGCTGTCCTAATTACAGCCGTTCTTCTCCTGCTATCACTACCAGTCCTTGCCGCT---GGCATTACAATGCTACTAACGGACCGAAATCTAAATACAACCTTTTTCGACCCGGCAGGCGGAGGTGACCCCATCCTTTACCAGCACTTA------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 
-- end --

Download FASTA File
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Statistics of barcoding coverage: Sarda australis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 4
Species: 4
Species With Barcodes: 1

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2011

Assessor/s
Collette, B., Di Natale, A., Fox, W., Juan Jorda, M. & Nelson, R.

Reviewer/s
Russell, B., Polidoro, B. & Newman, S.

Contributor/s

Justification
This species is found around southeastern Australia, Norfolk Island and northern New Zealand. It is a minor commercial species. It is listed as Least Concern. However, more information is needed on this species biology and population trends.
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Population

Population
There is no well-developed fishery for this species (Collette and Nauen 1983). Among the bonitos found in Australia, this species constitutes the majority of the catch. Reported landings in Australia since 1990 are approximately 100–150 tonnes per year, with a peak of 275 tonnes in 1998–1999 (NSW Department of Primary Industries 2008).

Population Trend
Unknown
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Threats

Threats

Major Threats

This is a minor commercial species caught with hook and line and providing first-rate sport to anglers using the lightest tackle (Grant 1982). It is also used as bait for billfishes, sharks, and tunas (Yoshida 1980, Grant 1982).

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Not Evaluated
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Management

Conservation Actions

Conservation Actions
There are no known conservation measures for this species. More information is needed on this species biology, harvest levels and population trends.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: minor commercial; gamefish: yes; bait: usually; price category: Consumed as food.; price reliability: very high
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Wikipedia

Australian bonito

The Australian bonito, horse mackerel or little bonito, Sarda australis is a fish of the family Scombridae and is found in eastern Australia and New Zealand. They swim at depths reaching depths of approximately 30 m (98 ft), in open water. Its length is commonly at around 40–45 centimetres (16–18 in) fork length and 1.8–2.3 kilograms (4.0–5.1 lb) weight. Its maximum length and weight are about 100 centimetres (39 in) and 9.4 kilograms (21 lb), respectively.

References

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