Results 211 to 220 of about 2,426 (254)

Semilunar rhythm in the zoea-release activity of the land crabs Sesarma

Oecologia, 1978
The number of the land crabs Sesarma which released zoeae in a river was counted and recorded for 2 years. The number of crabs releasing zoeae reached a maximum at around every syzygy and decreased to a minimum at around every half moon, showing a semilunar rhythm (Fig. 2).
Masayuki, Saigusa, Toshitaka, Hidaka
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Zoea-2 syndrome of Penaeus vannamei in shrimp hatcheries

Aquaculture, 2017
Mortalities of Pacific white shrimp, Penaeus vannamei during zoea stages were investigated in fifteen Indian shrimp hatcheries located on the east coast of India. Popularly known as zoea-2 syndrome, is characterized by reduction in feeding rate of late zoea 1 and early zoea 2 stage larvae, impairment in metamorphosis followed by high mortalities ...
T. Sathish Kumar, R. Vidya, Sujeet Kumar, S.V. Alavandi, K.K. Vijayan   +4 more
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The Zoea of Eurynome aspera

Journal of the Marine Biological Association of the United Kingdom, 1924
The Zoea of Eurynome aspera has already been twice described—namely, by Kinahan (1857) and Cano (1893), but there is some discrepancy between the two accounts which an observation made at Plymouth in April, 1922, fully explains.Kinahan observed the larva immediately on hatching and described it as having neither rostrum nor dorsal spine; whereas Cano ...
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Preliminary experiments on the cryopreservatioh of penaeid shrimp (penaeus japonicus) embryos, nauplii and zoea

Theriogenology, 1998
To improve availability of penaeid seedstock during periods of high demand, experiments were conducted to determine the feasibility of stockpiling embryos by freezing them. Embryos were screened for developmental stage; cryoprotectants, chilling effects, and freezing regimens were likewise evaluated.
J C, Gwo, C H, Lin
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Nervous systems in 3D: A comparison of Caridean, anomuran, and brachyuran zoea‐I (DECAPODA)

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, 2013
ABSTRACTUsing serial semi‐thin sections and digital 3D‐reconstructions we studied the nervous systems of zoea‐I larvae in three decapod species, Hippolyte inermis (Leach, 1815), Porcellana platycheles (Pennant, 1777), and Pachygrapsus marmoratus (Fabricius, 1787).
Hannes, Geiselbrecht, Roland R, Melzer
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The colour change of the zoea of the shrimp, crangon crangon L.

Experientia, 1953
Das Chromatophorensystem der Zoea-Larve der SandgarneleCrangon crangon L. ist einfacher ausgebildet als das der erwachsenen Garnele und zeigt auch ein anderes Verhalten Lichtreizen gegenuber. Dieses sogenannte primare Chromatophorensystem reagiert nur auf einfallendes Licht, und zwar durch Pigmentdispersion, wobei kurzwelliges Licht mehr aktiv ist. Das
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Nucleus patterns of zoea I larvae (Crustacea: Decapoda) in the context of taxonomy

Zootaxa, 2010
Using DAPI as a nucleus marker, we studied zoeas of 6 decapods (Palaemon adspersus Rathke, 1837; Palaemon elegans Rathke, 1837; Porcellana platycheles (Pennant, 1777); Pisidia longicornis (Linnaeus, 1767); Xantho hydrophilus (Herbst, 1780) Xantho pilipes A.
Meyer, Roland, Martin, Jana, Melzer, Roland R.   +2 more
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A remarkable zoea, attributed to the Majidae (Decapoda, Brachyura)

Annals and Magazine of Natural History, 1960
(1960). A remarkable zoea, attributed to the Majidae (Decapoda, Brachyura) Annals and Magazine of Natural History: Vol. 3, No. 27, pp. 141-144.
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Semi Automated Rack Collection of Brachyuran Crab Zoea in a Spawner Unit

Arab Gulf Journal of Scientific Research, 2014
The design and operation of a small research scale berried female rearing system for the collection of brachyuran first formed zoea in high quality and quantity are described in the present paper. The envisaged novel zoea collection system discloses a tray shelf system with an aqua terrarium on the upper shelf with provision of an accessible dry zone ...
Ali Mohamed Al-Aidaroos, Muthunayagam Rufus Kitto   +1 more
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On Prezoea And Zoea OfGeryon TridensKrÖYer (Crustacea Decapoda)

Sarsia, 1967
Abstract The present paper describes the prezoea and first zoea of Geryon tridens reared in the laboratory. Points of similarity and distinguishing features from other described larvae are also given.
T. Brattegard, C. Sankarankutty
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