Development of a method for attaching ultrasonic transmitters to Japanese spiny lobsters <i>Panulirus japonicus</i> by using spaghetti tags

Reproductive biology of the spiny lobster Panulirus japonicus was histologically examined by monthly sampling between March 1993 and September 1994 at Oshima Island, near Tokyo. P. japonicus had a well defined reproductive cycle. Yolk accumulation became manifest in February and ovaries grew rapidly in March. Females spawned from late April to mid August and were ovigerous to mid September. Of large females with a carapace length (CL) of ≥47 mm, 93% were estimated to spawn twice during the spawning season. Size at which 50% of females reached sexual maturity was estimated to be 41.8 mm CL, as calculated from a logistic model. Some individuals considered to be primiparous showed delayed vitellogenesis and were estimated to spawn only once during the season.

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A revision of the Indo-West Pacific spiny lobsters of the Panulirus japonicus group

Deep Sea Research and Oceanographic Abstracts ◽

10.1016/0011-7471(76)91212-2 ◽

1966 ◽

Vol 13 (5) ◽

pp. 1076

Keyword(s):

West Pacific ◽

Spiny Lobsters ◽

Panulirus Japonicus

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Panulirus japonicus: Chan, T.Y.

IUCN Red List of Threatened Species ◽

10.2305/iucn.uk.2011-1.rlts.t170006a6704413.en ◽

2009 ◽

Author(s):

Keyword(s):

Panulirus Japonicus

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Fin‐spines attachment, a novel external attachment method for the ultrasonic transmitters on hard fin‐spines fish (Sparidae)

Journal of Applied Ichthyology ◽

10.1111/jai.14164 ◽

2020 ◽

Author(s):

Shaoliang Lyu ◽

Kun Lin ◽

Jiawei Zeng ◽

Yuxi Liu ◽

Zhijie Chen ◽

...

Keyword(s):

Fin Spines ◽

Ultrasonic Transmitters

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Culture of larval spiny lobsters: a review of work done in northern Japan

Marine and Freshwater Research ◽

10.1071/mf97163 ◽

1997 ◽

Vol 48 (8) ◽

pp. 923 ◽

Cited By ~ 44

Author(s):

Jiro Kittaka

Keyword(s):

Water Quality ◽

Feeding Behaviour ◽

The Past ◽

Cool Temperate ◽

Spiny Lobsters ◽

Phyllosoma Larvae ◽

Work Done ◽

Plankton Feeders ◽

Palinurus Elephas ◽

Northern Japan

The method developed over the past decade in northern Japan to culture phyllosoma larvae of five species of principally cool-temperate spiny lobsters combines the features of upwelling water, co- cultured microalgae, and use of mussel gonad as food. The feeding behaviour of the phyllosomas shows that they are primarily predators with the pereiopods and secondarily plankton feeders with the maxillipeds and maxillae. Recent work has shown that contamination of culture water by microorganisms such as the fouling protozoans Vorticellaspp. can greatly reduce phyllosoma survival. The significance of co-cultures of microalgae in maintaining water quality is not yet fully understood. Newly hatched lavae of sailfin sandfish (Arctoscopus japonicus) is an excellent food for late-stage phyllosomas of Jasus verreauxi. About 5% of J. verreauxi phyllosomas metamorphosed into pueruli. Mortality during the puerulus stage was reduced by increasing the capacity of the culture tanks from 30 L to 100 L. A single Palinurus elephas phyllosoma raised in co-culture with diatoms and fed mussel gonad and A. japonicus larvae metamorphosed into a puerulus in 65 days after seven moults.

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