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지식채널

• 논문정보

  검색결과 7건

  논문정보 목록 - 제목, 내용, 저자, 저널명/발행자, 상세보기

  제목	내용	저자	저널명/발행자	상세보기
  The complete mitochondrial genome of a Dokdo shrimp, Lebbeus groenlandicus	Abstract Lebbeus groenlandicus is a shrimp species indigenous to the Dokdo islands in the East Sea of Korea. We report the 17,399 bp mitochondrial genome (mitogenome) of the species that consists of 13 protein-coding genes, 22 transfer RNAs (tRNAs), 2 ribosomal RNAs (rRNAs), and a control region (CR). A maximum-likelihood tree, constructed with 18 prawn and 45 shrimp mitogenomes, confirmed that L. groenlandicus occupies the most basal position within the Caridea infra-order and is closely related to Pandalidae shrimps.	Kim, Jungeun,Choi, Jae-Pil,Kim, Hui-Su,Jo, Yejin,Min, Won Gi,Yum, Seungshic,Bhak, Jong	TaylorFrancis	상세보기
  가시배새우(Lebbeus groenlandicus)의 유생 단계 에너지수지	Spiny lebbeid shrimp Lebbeus groenlandicus larvae were reared in the laboratory to estimate the energy budget from the zoeal to the post-larval stage. Energy expended by larvae on growth and respiration was determined from values for feeding, growth, molting, and metabolism. We calculated that 16.22 J were used for growth throughout all larval stages. Energy loss during molting was estimated as 1.03 J, and energy used for respiration was estimated as 1.31 J. Energy taken in by feeding was estimated as 77.16 J, while the sum of energies expended in excretion and egestion was 58.61 J. Larvae were estimated to assimilate 24.6% of ingested food as energy and to use ~85% of the assimilated energy for somatic growth. Gross growth efficiency ( $K_1$ ) and net growth efficiency ( $K_2$ ) were shown to be ~22% and 93%, respectively. Maintenance costs of respiration were estimated as ~9.7% of assimilated energy.	김원기,권오남,박기영	한국수산과학회	상세보기
  Mushroom bodies in crustaceans: Insect­like organization in the caridid shrimp Lebbeus groenlandicus	Abstract Paired centers in the forebrain of insects, called the mushroom bodies, have become the most investigated brain region of any invertebrate due to novel genetic strategies that relate unique morphological attributes of these centers to their functional roles in learning and memory. Mushroom bodies possessing all the morphological attributes of those in dicondylic insects have been identified in mantis shrimps, basal hoplocarid crustaceans that are sister to Eumalacostraca, the most species­rich group of Crustacea. However, unless other examples of mushroom bodies can be identified in Eumalacostraca, the possibility is that mushroom body­like centers may have undergone convergent evolution in Hoplocarida and are unique to this crustacean lineage. Here, we provide evidence that speaks against convergent evolution, describing in detail the paired mushroom bodies in the lateral protocerebrum of a decapod crustacean, Lebbeus groenlandicus, a species belonging to the infraorder Caridea, an ancient lineage of Eumalacostraca.	Sayre, Marcel E.,Strausfeld, Nicholas J.	John Wiley Sons, Inc.	상세보기
  Effects of lipid enrichment of Artemia nauplii for feeding of spiny lebbeid shrimp, Lebbeus groenlandicus (Fabricius, 1775), zoea larvae	This study was conducted to determine the optimum feed selection for the spiny lebbeid shrimp, Lebbeus groenlandicus, from zoea to megalopa larva. To the shrimp zoeae, untreated hatching Artemia meta-nauplii, or either of two kinds of enriched Artemia, were supplied as feed daily, in a concentration of 3 individuals/ml. Throughout the experimental trials, 17.6-18.1 days elapsed until reaching the megalopa larval stage. In the starving trials, no mortality was observed; the mortality values observed in the experimental trials, between 4.8 and 9.5% were considered low and not significantly different (). Neither fatty nor amino acids varied significantly in the zoea I and II stages in either the feeding or starving trials. Highly unsaturated fatty acids and amino acids were significantly lower in the megalopa stage in the starving group, compared with the feeding groups (). Therefore, feeding was proven not to have any effect in the zoea I and II larval stages. However, for the megalopa larval stage, a feed containing supplementary amino acids and fatty acids evoked a positive effect.	Park, Kie-Young,Park, Heum-Gi,Hong, Woo-Suck,Kwon, O-Nam	Brill	상세보기
  Mushroom bodies in Reptantia reflect a major transition in crustacean brain evolution	Abstract Brain centers possessing a suite of neuroanatomical characters that define mushroom bodies of dicondylic insects have been identified in mantis shrimps, which are basal malacostracan crustaceans. Recent studies of the caridean shrimp Lebbeus groenlandicus further demonstrate the existence of mushroom bodies in Malacostraca. Nevertheless, received opinion promulgates the hypothesis that domed centers called hemiellipsoid bodies typifying reptantian crustaceans, such as lobsters and crayfish, represent the malacostracan cerebral ground pattern. Here, we provide evidence from the marine hermit crab Pagurus hirsutiusculus that refutes this view. P. hirsutiusculus, which is a member of the infraorder Anomura, reveals a chimeric morphology that incorporates features of a domed hemiellipsoid body and a columnar mushroom body. These attributes indicate that a mushroom body morphology is the ancestral ground pattern, from which the domed hemiellipsoid body derives and that the “standard” reptantian hemiellipsoid bodies that typify Astacidea and Achelata are extreme examples of divergence from this ground pattern. This interpretation is underpinned by comparing the lateral protocerebrum of Pagurus with that of the crayfish Procambarus clarkii and Orconectes immunis, members of the reptantian infraorder Astacidea.	Strausfeld, Nicholas J.,Sayre, Marcel E.	John WileySons, Inc.	상세보기

• 특허정보

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  특허정보 목록 - 제목, 등록/출원번호, 출원인, 원문정보

  제목	등록/출원번호	출원인	원문정보
  미토콘드리아 삽입 마커에서 유래한 가시배새우 종 판별용 유전자 마커 조성물 및 이를 이용한 가시배새우 판별방법	1020190117659	재단법인 게놈연구재단	원문정보