life cycle of the fairy shrimp, phallocryptus spinosa milne edwards, 1840 (crustacea: anostraca) at different temperatures
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abstract
this study was conducted to evaluate a temperature regime ranged from 15 to 30°c on survival, growth, life span and reproductive traits (reproductive period, clutch number, offspring number) of phallocryptus spinosa from iran. newly hatched nauplii (n= 200 and 3 replicates per each treatment) were allocated into containers and maintained at various temperature regimes (at 15, 20, 25 and 30˚c). during trial, the larvae were fed with unicellular algae dunaliella tertiolecta and lansy pz (lipid-enriched yeast). survival and growth rate of p. spinosa with an interval of 3 days to 18 days were examined. after attaining adulthood, 16 pairs of adult p. spinosa were transferred from all culture vessels into separate containers supplied with 300 ml of brackish water (5 ppt) and similar temperatures to compare their life span and reproductive traits. based on results obtained, maximum growth at shortest period (13.2±2.0 mm on day 12) was observed at 30°c; whereas, all p. spinosa died before reaching sexual maturity by day 15. maximum survival (86%) was observed at 15°c; however, minimum growth also was obtained at the same temperature with none of p. spinosa reaching sexual adulthood. on the 18th day, p. spinosa reached sexual adulthood only at 20 and 25°c. furthermore, a significant difference was observed in most of the reproductive traits especially in total egg production per female at 20°c. thus, it seems that 20°c is the suitable temperature to rear this fairy shrimp. future studies should be focused on the feasibility of mass production of this species as a valuable live feed in the aquaculture industry.
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full textthe effects of temperature on survival, growth, life span and reproduction characteristics of phallocryptus spinosa milne edwards, 1980 (crustacea; anostraca)
the survival, growth, reproductive and life span characteristics of phallocryptus spinosa were studied at different temperatures in the laboratory. three replicates of 200 newly hatched nauplii were transferred to culture containers at 15, 20, 25 and 30˚c. the larvae were fed with unicellular algae dunaliella tertiolecta and chemically treated yeast known as lansy pz. survival and growth rate o...
full textاثر دماهای مختلف بر ویژگیهای زیستی: رشد، بقا، طول عمر و صفات تولیدمثلی پریان میگوی Phallocryptus spinosa Milne Edwards, 1840 (Crustacea; Anostraca)
در این تحقیق درصد ماندگاری، نرخ رشد، ویژگیهای تولیدمثلی و طول عمر گونة Phallocryptus spinosa در شرایط آزمایشگاهی بررسی شد. تعداد 200 ناپلی تازه تفریخشده در 3 تکرار به محیط پرورش تیمارهای دمایی (15، 20، 25 و 30 درجة سانتیگراد) منتقل شدند. پریان میگو با جلبک تکسلولی دونالیلا ترتیولکتا (Dunaliellatertiolecta) و مخمر فرمولهشدة لنسی پی زد (Lansy PZ) غذادهی شد. درصد ماندگاری و نرخ رشد لاروها در ...
full textA new fairy shrimp Phallocryptus tserensodnomi (Branchiopoda: Anostraca) from Mongolia.
A new species of Phallocryptus Biraben 1951 (Branchiopoda, Anostraca) from Mongolia is described. Phallocryptus tserensodnomi sp. nov. is close to P. spinosa (Milne-Edwards 1840), but both morphological and molecular analyses (Cytochrome Oxidase I, COI) indicate that they represent separate species. Most relevant differential features of the new species include: (1) frontal appendage provided w...
full textاثر دماهای مختلف بر ویژگی های زیستی: رشد، بقا، طول عمر و صفات تولیدمثلی پریان میگوی phallocryptus spinosa milne edwards, 1840 (crustacea; anostraca)
در این تحقیق درصد ماندگاری، نرخ رشد، ویژگیهای تولیدمثلی و طول عمر گونة phallocryptus spinosa در شرایط آزمایشگاهی بررسی شد. تعداد 200 ناپلی تازه تفریخ شده در 3 تکرار به محیط پرورش تیمارهای دمایی (15، 20، 25 و 30 درجة سانتی گراد) منتقل شدند. پریان میگو با جلبک تک سلولی دونالیلا ترتیولکتا (dunaliellatertiolecta) و مخمر فرموله شدة لنسی پی زد (lansy pz) غذادهی شد. درصد ماندگاری و نرخ رشد لاروها در ...
full textEmbryology of the spider crabs Leurocyclus tuberculosus (H. Milne-Edwards & Lucas 1842) and Libinia spinosa (H. Milne-Edwards 1834) (Brachyura, Majoidea).
The embryonic development of the spider crabs Leurocyclus tuberculosus and Libinia spinosa was divided into five periods based on the differentiation of: (I) cleavage, (II) embryonic primordium, III) optic lobes, (IV) optic lobes pigmented and (V) chromatophores presence. Different traits such as spines, setae and telson morphology distinguish the two species from period III until hatching. Egg...
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Journal title:
journal of agricultural science and technologyPublisher: tarbiat modares university
ISSN 1680-7073
volume 18
issue 1 2016
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