Methods of Estimating the Abundance of Juvenile Spot Shrimp in a Shallow Nursery Area

Barr, Louis

doi:10.1577/1548-8659(1971)100<781:moetao>2.0.co;2

Cited by 8 publications

(1 citation statement)

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“…Important life history traits include age at sexual maturity and total life span. Life span can be especially hard to assess in this species but some age estimations have been attempted through mark and recapture methods 11 and studying the basic biology in field studies 13,40 . A novel and wider approach into the life-cycle of P. platyceros is presented in Fig.…”

Section: Discussionmentioning

confidence: 99%

The protandric life history of the Northern spot shrimp Pandalus platyceros: molecular insights and implications for fishery management

Levy

Tamone

Manor

et al. 2020

Sci Rep

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the northern spot shrimp, Pandalus platyceros, a protandric hermaphrodite of commercial importance in North America, is the primary target species for shrimp fisheries within Southeast Alaska. Fishery data obtained from the Alaska Department of fish and Game indicate that spot shrimp populations have been declining significantly over the past 25 years. We collected spot shrimps in Southeast Alaska and measured reproductive-related morphological, gonadal and molecular changes during the entire life history. the appendix masculina, a major sexual morphological indicator, is indicative of the reproductive phase of the animal, lengthening during maturation from juvenile to the male phase and then gradually shortening throughout the transitional stages until its complete disappearance upon transformation to a female. this morphological change occurs in parallel with the degeneration of testicular tissue in the ovotestis and enhanced ovarian vitellogenesis. Moreover, we obtained the entire mRnA sequence of the yolk protein precursor, vitellogenin, and monitored its transcript levels throughout the entire shrimp life-cycle. Vitellogenin transcript levels in the hepatopancreas increased in the early transitional stage until reaching a peak prior to extruding eggs. Such transcriptomic analyses, coupled with a comprehensive description of the gonad, external sex characters and timing of the reproductive life history of spot shrimps contribute to a better understanding of the hermaphroditic reproduction process in the cold Southeast Alaskan waters. this knowledge can contribute to a revision of current conservation efforts to maintain wild populations sustainable for both commercial and ecological considerations.

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Section: Discussionmentioning

confidence: 99%

The protandric life history of the Northern spot shrimp Pandalus platyceros: molecular insights and implications for fishery management

Levy

Tamone

Manor

et al. 2020

Sci Rep

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A comparison of methods for tagging juvenile lobsters (Homarus gammarus L.) reared for stock enhancement

Linnane

Mercer

1998

Aquaculture

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Tagging experiments with western king prawn Penaeus latisculatus Kishinouye. I. Survival, growth, and reproduction of tagged prawns

Penn¹

1975

Mar. Freshwater Res.

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Two tags for adult western king prawns, Penaeus latisulcatus, have been field tested in an unexploited king prawn population in Cockburn Sound, Western Australia. Both toggle and Atkin tags have been found to cause little physical damage to the prawns apart from limited scarring at the points of entry and through the musculature adjacent to the tag. Long-term survival of both toggle- and Atkin-tagged prawns did not differ significantly from that of the untagged population, but a variable amount of initial tagging mortality occurred during the first 72 h after release due to both handling and tagging. Mortality related to size or sex was not evident for the toggle tags, but for Atkin tags there was a tendency towards smaller prawns having a better survival. Growth of all tagged prawns was found to be retarded during the first month from release, but in subsequent months appeared to be faster than the average control animals. Although the growth of tagged prawns recaptured during the spawning season was retarded, normal ovary development occurred and some females spawned while tagged. Some of the problems in the use of tag recapture data from penaeid prawn stocks have been discussed.

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Methods of Estimating the Abundance of Juvenile Spot Shrimp in a Shallow Nursery Area

Cited by 8 publications

References 0 publications

The protandric life history of the Northern spot shrimp Pandalus platyceros: molecular insights and implications for fishery management

The protandric life history of the Northern spot shrimp Pandalus platyceros: molecular insights and implications for fishery management

A comparison of methods for tagging juvenile lobsters (Homarus gammarus L.) reared for stock enhancement

Tagging experiments with western king prawn Penaeus latisculatus Kishinouye. I. Survival, growth, and reproduction of tagged prawns

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