Protandry in the freshwater shrimp,<i>Paratya curvirostris</i>(Heller, 1862) (Decapoda: Atyidae), with a review of the phenomenon and its significance in the Decapoda

Carpenter, Alan T.

doi:10.1080/03036758.1978.10423317

Cited by 33 publications

(30 citation statements)

References 27 publications

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“…The Atyidae are almost exclusively fresh water shrimps with life histories ranging from amphidromy to completely fresh water (ALD). Various authors (Chace & Hobbs, 1969;Carpenter, 1977;Hobbs & Hart, 1982) presumed the atyid ancestor was an amphidromous species with immediate marine ancestors. This issue has been addressed by results from various recent studies using molecular phylogenetic techniques.…”

Section: Evolutionary Origins Of Amphidromymentioning

confidence: 99%

Amphidromy in shrimps: a life cycle between rivers and the sea

Bauer¹

2013

lajar

102

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ABSTRACT. Amphidromy is a diadromous life history pattern, common in tropical and subtropical freshwater caridean shrimps, in which adults live, breed and spawn small-sized embryos in freshwater but have extended larval development (ELD) in marine waters. Most completely freshwater species spawn large embryos with either direct or abbreviated larval development (ALD). An important benefit of amphidromy is dispersal among river systems via marine larvae, which increases their access to alternative habitats. Thus, amphidromous species have much broader geographic distributions than closely related completely freshwater ones with ALD. ALD and freshwater ELD species appear to have evolved from amphidromous species with marine ancestors. Delivery of larvae to the sea in many amphidromous species is accomplished by upstream hatching and river drift of larvae to the sea. In other species, the females themselves apparently migrate down to marine waters to spawn. After development, the postlarvae must find a river mouth and migrate upstream to the adult habitat. Migrations occur at night, with juveniles swimming or crawling along the river or stream bank. Larvae are released during the wet or flood season of the year, while juvenile migrations take place during the dry or low-flow season. Both larval downstream and juvenile upstream movements are disrupted by human impacts such as dams and other forms of river control. Although much progress has been made in understanding the evolution and ecology of amphidromy, research is still needed on all aspects of shrimp amphidromy, especially in Latin America with its diverse freshwater shrimp fauna. Keywords: Caridea, diadromy, larvae, juveniles, migration, streams, rivers.Anfidromía en camarones: un ciclo de vida entre los ríos y el mar RESUMEN. La anfidromía es un ciclo de vida común en camarones tropicales y subtropicales de agua dulce, en que los adultos viven, se aparean y desovan embriones pequeños en agua dulce, pero tienen un extenso desarrollo larval (DLE) en aguas marinas. Especies con embriones grandes tienen un desarrollo larval abreviado o directo (DLA), y pasan toda su vida en agua dulce. Un beneficio importante de la anfidromía es la dispersión en los ríos por medio de larvas marinas. Por eso, las especies anfidrómicas tienen distribuciones geográficas más amplias que las especies de agua dulce sin larvas marinas. Al parecer, las especies con DLA han evolucionado de especies anfidrómicas con antepasados marinos. La llegada de larvas al mar en algunas especies anfidrómicas ocurre por la deriva de larvas por la corriente del río. En otras especies, las hembras migran río abajo para liberar sus larvas en agua salada. Después del desarrollo larval en el mar, las postlarvas tienen que buscar una desembocadura de un río y luego, migrar río arriba al hábitat de los adultos. Las migraciones ocurren durante la noche, con los juveniles nadando o siendo transportados por la corriente del río. La eclosión de las larvas ocurre durante la temporada de lluvia (flujo alto), pero ...

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Section: Evolutionary Origins Of Amphidromymentioning

confidence: 99%

Amphidromy in shrimps: a life cycle between rivers and the sea

Bauer¹

2013

lajar

102

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“…Pandalid shrimp have been used as a "model" organism to further theories about the environmental, genetic and evolutionary mechanisms determining sex allocation. Theories on the adaptive value of protandry range from the increased reproductive efficiency of small males and large females (Warner, 1974) to no adaptive value, or even negative effects in some situations (Carpenter, 1978). While protandry is undoubtedly important in the population dynamics of the species, the factors which determine sex change remain obscure and controversial.…”

Section: Introductionmentioning

confidence: 99%

Density Dependant Sex Change in Northern Shrimp, Pandalus borealis, on the Scotian Shelf

Koeller¹,

Mohn²,

Etter³

2000

J. Northw. Atl. Fish. Sci.

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We investigated factors affecting sex change in the Pandalid shrimp Pandalus borealis on the Scotian Shelf. Transition from male to female occurred at different sizes and ages, and could not be related to a minimum size or age. Our data did not show a positive relationship between abundance of older females and shrimp size at sex transition, nor a negative relationship between male:female sex ratio and shrimp size at transition, that would be expected if the population was compensating for decreases in reproductive capacity as predicted by sex allocation theory. Size at transition was inversely related to female density, which was attributable to density dependent growth affecting all stages. Density dependant growth also appeared to explain previously reported results which had been used to support sex allocation theory. Density was the most important factor determining individual growth at high densities while at low densities other factors, including temperature, were also an important determinant of growth. We conclude that a decrease in the size at transition can be indicative of a healthy, as well as a declining stock, and must be fully understood before it can be used as an indicator of stock status. Possible alternative mechanisms for regulating sex change in Pandalids are discussed.

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“…comm.). Several primitive families also appear to be present amongst the Ephemeroptera, Plecoptera, Trichoptera, and Malacostraca (Carpenter 1977;Forsyth & Lewis 1987), and the three endemic genera of Odonata (Xanthocnemis, Uropetela, and Antipodochlora) are also thought to be primitive (Rowe 1987).…”

Section: International Significance Of the Invertebrate Faunamentioning

confidence: 99%

“…In addition, New Zealand represents the southern limit of distribution for some cosmopolitan groups. For example, the shrimp Paratya curvirostris, which occurs throughout the lowlands of New Zealand, is the southern-most representative of the crustacean family Atyidae (Carpenter 1977).…”

Section: International Significance Of the Invertebrate Faunamentioning

confidence: 99%

Review of the status, distribution, and conservation of freshwater invertebrates in New Zealand

Collier¹

1993

New Zealand Journal of Marine and Freshwater Research

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The international significance of the New Zealand freshwater macroinvertebrate fauna is established, existing and potential threats to it are reviewed, and regional patterns of invertebrate distribution based on current information are examined. Distinctive features of international significance are the poor representation or absence of some invertebrate groups, a high degree of speciation amongst other groups, an apparently large number of primitive species, a high degree of endemicity, and the southern-most representatives of some cosmopolitan groups. The greatest threat to freshwater invertebrates has been loss and reduced quality of habitat caused by human-induced modifications to the catchment, riparian and channel environments, and changes to water quality and river flows. Predation by alien species of invertebrates, fish, and birds may also have had significant impacts on the native aquatic invertebrate fauna. Analysis of invertebrate distributions has identified 154 species known from surface waters on mainland New Zealand that have "restricted" distributions (known from three or fewer Ecological Regions). Twenty species colonising underground waters are also known from three or fewer Ecological Regions, and 36 species of freshwater invertebrates are known only from offshore islands. Species-and habitat-based approaches to invertebrate conservation are evaluated. M93010

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Protandry in the freshwater shrimp,Paratya curvirostris(Heller, 1862) (Decapoda: Atyidae), with a review of the phenomenon and its significance in the Decapoda

Cited by 33 publications

References 27 publications

Amphidromy in shrimps: a life cycle between rivers and the sea

Amphidromy in shrimps: a life cycle between rivers and the sea

Density Dependant Sex Change in Northern Shrimp, Pandalus borealis, on the Scotian Shelf

Review of the status, distribution, and conservation of freshwater invertebrates in New Zealand

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