{"title":"大菱鲆(Herklot氏)幼虫的缩孔率(十足目，长尾虾科)","authors":"P. J. Udo","doi":"10.4314/GJES.V3I1.2426","DOIUrl":null,"url":null,"abstract":"The effect of formalin/sea-water solution (2% and 4% formalin conc. buffered with borax) on the total lengths of preserved samples of newly hatched Macrobrachium vollenhovenii larvae was investigated. The influence of an aesthesia on larvae in 2% and 4% formal in was also studied to determine the combine influence of an aesthesia and formal in on these specimen. Shrinkage was similar in all subgroups studied (P>0.05). Prior to shrinkage, specimens showed initial increases in total length, which finally stabilized after 20 days preservation. Larger specimen exhibited lower shrinkage rates than smaller specimens (P>0.05). Shrinkage did not take place in larval stages 4 and 5. Specimens above zoea 5 exhibited a drastic size reduction on preservation. Anesthesia influenced shrinkage drastically. KEY WORDS: Shrinkage ,Larvae, M. Vollenhovenii , Formalin , Anesthesia. Global Journal of Environmental Sciences Vol.3(1&2) 2004: 41-43","PeriodicalId":12569,"journal":{"name":"Global Journal of Environmental Sciences","volume":"1 1","pages":"41-43"},"PeriodicalIF":0.0000,"publicationDate":"2005-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Shrinkage Rates In Newly Hatched Larvae Of Macrobrachium vollenhovenii (Herklot's) (Decapoda, Palaemonidae)\",\"authors\":\"P. J. Udo\",\"doi\":\"10.4314/GJES.V3I1.2426\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The effect of formalin/sea-water solution (2% and 4% formalin conc. buffered with borax) on the total lengths of preserved samples of newly hatched Macrobrachium vollenhovenii larvae was investigated. The influence of an aesthesia on larvae in 2% and 4% formal in was also studied to determine the combine influence of an aesthesia and formal in on these specimen. Shrinkage was similar in all subgroups studied (P>0.05). Prior to shrinkage, specimens showed initial increases in total length, which finally stabilized after 20 days preservation. Larger specimen exhibited lower shrinkage rates than smaller specimens (P>0.05). Shrinkage did not take place in larval stages 4 and 5. Specimens above zoea 5 exhibited a drastic size reduction on preservation. Anesthesia influenced shrinkage drastically. KEY WORDS: Shrinkage ,Larvae, M. Vollenhovenii , Formalin , Anesthesia. Global Journal of Environmental Sciences Vol.3(1&2) 2004: 41-43\",\"PeriodicalId\":12569,\"journal\":{\"name\":\"Global Journal of Environmental Sciences\",\"volume\":\"1 1\",\"pages\":\"41-43\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2005-02-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Global Journal of Environmental Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4314/GJES.V3I1.2426\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Global Journal of Environmental Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4314/GJES.V3I1.2426","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Shrinkage Rates In Newly Hatched Larvae Of Macrobrachium vollenhovenii (Herklot's) (Decapoda, Palaemonidae)
The effect of formalin/sea-water solution (2% and 4% formalin conc. buffered with borax) on the total lengths of preserved samples of newly hatched Macrobrachium vollenhovenii larvae was investigated. The influence of an aesthesia on larvae in 2% and 4% formal in was also studied to determine the combine influence of an aesthesia and formal in on these specimen. Shrinkage was similar in all subgroups studied (P>0.05). Prior to shrinkage, specimens showed initial increases in total length, which finally stabilized after 20 days preservation. Larger specimen exhibited lower shrinkage rates than smaller specimens (P>0.05). Shrinkage did not take place in larval stages 4 and 5. Specimens above zoea 5 exhibited a drastic size reduction on preservation. Anesthesia influenced shrinkage drastically. KEY WORDS: Shrinkage ,Larvae, M. Vollenhovenii , Formalin , Anesthesia. Global Journal of Environmental Sciences Vol.3(1&2) 2004: 41-43
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