A Mass Stranding of Rock Lobsters Jasus Lalandii (H. Milne Edwards, 1837) At Elands Bay, South Africa (Decapoda, Palinuridea)

Pollock, D. E.; Newman, G. G.

doi:10.1163/156854074x00019

Cited by 11 publications

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“…Once the individuals have reached adulthood, migrations are quite short in distance and time (homing activities) and are associated with moulting in a more protected area, food gathering during nocturnal foraging, or finding a more environmentally comfortable position in another location when external conditions, such as winter storms and summer high temperatures (e.g., P. a. argus Herrnkind 1980) or oxygen depletion (e.g., J. lalandii Newman & Pollock 1974) force temporary emigration. The timing and extent of these migrations vary in each species and have been evolved in response to the particular characteristics of, and the seasonal changes in, the suite of environmental parameters that have controlled, and now determine its special habitat requirements.…”

Section: Adult Phasementioning

confidence: 99%

Review

George

2005

New Zealand Journal of Marine and Freshwater Research

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A comparison of the documented ecology and behaviour of the separate phases in the life cycles is presented. Data gathered during the review show that during the evolution of the family from deeper-water habitats to the more rapidly fluctuating shallower waters, there have been many biological adjustments at each phase in their life cycles. In the more ancient Stridentes genera, like Puerulus, the larvae are found well below the surface waters and the pueruli often settle at greater depths than those of the adults. Long incubation times, few larval instars, and year-round spawning are probably their life cycle characteristics. As an "intermediateevolved" genus of Stridentes, Palinurus lives along the outer shelf, grows slowly, matures late, and breeds seasonally once a year. Incubation time is long, the larvae live at depth, the number of larval instars is limited, and the puerulus is a weak swimmer. Settlement is often downstream of the breeding stock. Incubation times are short for the more recently evolved Stridentes Panulirus, the larvae pass through many instars in the surface waters to c. 200 m. Some pueruli settle in special coastal habitats, others settle in the same habitat as the adult. Breeding in the cooler water First Major Lineage species is seasonal, one or two broods being pro- changes from deep to shallower water is comparable with that of Stridentes. Incubation is probably long in the more ancient Projasus, the larvae are rare in surface waters and the pueruli settle at depths similar to those of the adults. Sagmariasus and Jasus breed once during a defined season, incubation time is moderate, and the larvae pass through many instars. The pueruli of Sagmariasus settle downstream and exhibit contranatant migration whereas the pueruli of Jasus swim strongly to their shallow habitats. In each life cycle phase, migration methods range from vertical paddling in phyllosomata, horizontal swimming in pueruli, and horizontal walking when juveniles move to adult habitats. Adult movements are associated with foraging, searching for shelter, avoiding adverse seasonal conditions, or walking to preferred offshore locations for moulting and reproduction.

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Section: Adult Phasementioning

confidence: 99%

Review

George

2005

New Zealand Journal of Marine and Freshwater Research

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“…Information on the natural diet preferences are available for a few homarid and palinurid adult lobsters (Joll and Phillips, 1984;Junio and Cobb, 1992;Mayfield and Branch, 2000;Goni et al, 2001). The dependance of moulting frequency, and thus growth, on feed has been documented (Stewart and Squires, 1968;Chittleborough, 1974Chittleborough, , 1975Newman and Pollock, 1974). Castell and Budson (1974) described the influence of food on moulting and growth rate in homarid lobsters.…”

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Effect of diet on growth of the mudspiny lobster Panulirus polyphagus (Herbst, 1793) and the sand lobster Thenus orientalis (Lund, 1793) held in captivity

Kizhakudan¹,

Patel²

2011

J. Mar. Biol. Ass. India

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Effect of diet on growth of the mudspiny lobster Panulirus polyphagus J. Mar. Biol. Ass. India, 53 (2), July -December 2011 doi: 10.6024/jmbai.2011.53.2.01665-02 IntroductionA major prerequisite for promoting the candidature of a species for aquaculture is to define the nutritional requirements and feed preferences of the animal in captivity and in the wild, so as to enable the formulation of artificial diets that can serve to maintain the health status of the animal over wide culture periods. Information on the natural diet preferences are available for a few homarid and palinurid adult lobsters (Joll and Phillips, 1984;Junio and Cobb, 1992;Mayfield and Branch, 2000;Goni et al., 2001). The dependance of moulting frequency, and thus growth, on feed has been documented (Stewart and Squires, 1968;Chittleborough, 1974Chittleborough, , 1975Newman and Pollock, 1974). Castell and Budson (1974) described the influence of food on moulting and growth rate in homarid lobsters. Chittleborough (1974)

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