• 제목/요약/키워드: Morphometric trait

검색결과 9건 처리시간 0.024초

Changes of Morphometric Traits in the Cultured Cyprinid Loach (Misgurnus anguillicaudatus) to Starvation

  • Hur, Jun Wook;Gil, Hyun Woo;Park, In-Seok
    • Ecology and Resilient Infrastructure
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    • 제5권4호
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    • pp.264-275
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    • 2018
  • The experiment was conducted to investigate the effects of various dietary conditions on external morphometric traits, and sectioned morphometric traits in the cultured cyprinid loach, (Misgurnus anguillicaudatus) for 28 days. For the fed group there was an increase in body weight, standard length, and morphometric dimensions of the head and body cavity regions compared with the starved and initial groups. Sectioned morphometric trait analysis revealed that relative to the starved group, the fed group had greater body circumference, cross-sectional area, and total height (P<0.05). Our results provide data on external and sectioned morphometric changes under starvation conditions, and can be used as a guide to assist in the regulation and scheduling of feeding, and as indices of the nutritional status of cyprinid loach.

Effects of Starvation in Rock Bream, Oplegnathus fasciatus and Olive Flounder, Paralichthys olivaceus

  • Park, In-Seok;Gil, Hyun Woo;Yoo, Gwang Yeol;Oh, Ji Su
    • 한국발생생물학회지:발생과생식
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    • 제19권2호
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    • pp.97-109
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    • 2015
  • We assessed the effects of various dietary conditions on the growth, phenotypic traits, and morphometric dimensions of rock bream, Oplegnathus fasciatus and on the morphometric dimensions of sectioned olive flounder, Paralichthys olivaceus. Rock bream in the fed group increased in body weight, standard length, and condition factor, but these parameters decreased significantly for fish in the starved group (P < 0.05). The head connection dimensions of fish in the fed group decreased, while for starved fish there was increase in external morphometric dimensions (P < 0.05). In both species, sectioned morphometric analysis revealed that fish in the fed group had a larger body circumference and cross-cut sectional area, and greater cross-cut section height, relative to the starved group (P < 0.05).

무지개송어, 은연어 및 그 잡종3배체의 체형 비교 (Morphometric Comparison in Rainbow Trout, Oncorhynchus mykiss, Coho Salmon, Oncorhynchus kisutch, and their Allotriploid)

  • 홍경표;김병기;명정구;김종만;허형택
    • 한국수산과학회지
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    • 제30권4호
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    • pp.687-689
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    • 1997
  • For identification of morphometric characteristics in rainbow trout, Oncorhynchus mykiss, coho salmon, O. kisutch, and their allotriploid, twenty one body traits were measured, and the ratios of each trait to fork length, length from postorbital to the origin of caudal fin and head length were calculated. The ratios of fin length to fin height in anal, dorsal and adipose fins showed significant differences among these two species and their allotriploid $(p\leq0.01)$. Allotriploid could be distinguished easily from two parents species in the ratios of length of origin of ventral fin to fork length and anal fin length to anal fin height.

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무지개송어, Oncorhynchus mykiss와 산천어, O. masou간의 잡종 및 잡종 3배체 생산 II. 성비 및 계측형질 특성 (Production of Hybrid and Allotriploid between Rainbow Trout, Oncorhychus mykiss and Cherry Salmon, O masou II. Characteristics of Sex Ratio and Morphometric Traits)

  • 박인석;최경철;김동수
    • 한국양식학회지
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    • 제10권1호
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    • pp.49-54
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    • 1997
  • 무지개송어, 산천어, 무지개송어와 산천어간의 잡종 3배체를 대상으로 성비조사와 형태학적 계측형질을 측정하였다. 무지개송어, 산천어의 암.수 성비는 공히 유사한 비율로 나타난 반면, 잡종과 잡종 3배체에서는 수컷이 암컷에 비해 높게 나타났다(p<0.01). 잡종 3배체는 두고/두장, 등지느러미 기부장/체장 및 가슴지느러미 길이/체장의 계측형질에서는 친어로 사용된 무지개송어와 산천어의 중간을 나타낸 반면 상악장/두장의 계측형질에서는 무지개송어 쪽을 다소 닮게 나타났다. 이러한 결과들은 잡종 3배체에서 3배체화에 따른 사용된 친어들에 대비된 성비 그리고 계측형질에서의 특징을 나타내었다.

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메기(Silurus asotus) 기아 시 외부형태 및 체 절단면 변화 (The effect of starvation on the characteristics of morphometric measurement and body-sectioned shape in Far Eastern catfish (Silurus asotus))

  • 박인석;구인본;길현우
    • 환경생물
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    • 제39권1호
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    • pp.55-67
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    • 2021
  • 메기(Silurus asotus)를 대상으로 210일간 기아 시 계측형질 및 체 절단면 형질을 측정하여 그 기아 효과를 조사하였다. 실험 종료시 섭이군의 생존율은 92.2±0.47%였으며, 기아군에서는 74.4±2.59%의 생존율을 보였다. Ls, DALPO/Ls, DADOP/Ls, ED/Ls, CH/Ls, BDAA/Ls, BDMA/Ls 및 BWAA/Ls의 8개 항목에서 유의한 차이를 보였으며(p<0.05), 다른 16개 항목 DALAD/Ls, DPDPL/Ls, HPLAA/Ls, HALAV/Ls, HALOP/Ls, DAUPO/Ls, DADAV/Ls, DADAA/Ls, Max BL/Ls, Man BL/Ls, LD/Ls, HWOP/Ls, DAUF/HL, DAUS/HL, IW/HL 및 DAUE/HL에서는 초기군, 섭이군 및 기아군의 세 그룹 간 유의한 차이가 없었다(p>0.05). 섭이군은 각 체 절단면에서 기아군보다 더 높은 전체 높이(THX), 더 넓은 너비(WX) 및 더 넓은 면적(AX)을 보였다. 본 연구는 메기의 기아 상태에 대한 외형 및 체 절단면 형질에 대한 정보를 제공한다. 이는 메기에 대한 먹이 조절에 대한 방법을 보조하고 영양상태를 나타내는 기본 기초자료로 활용될 수 있을 것이다. 또한, 본 연구에서 사용한 조사 분석 방법을 타 어종에서 적용 시 그 영양 상태에 대한 정보를 파악하는 데 유용하게 활용될 수 있을 것으로 사료된다.

Morphometric and Histological Changes in Cyprinid Loach, Misgurnus anguillicaudatus, in the Early Growth Period

  • Han, Hyoung Kyun;Lim, Sang Gu;Kang, Jung Ha;Choi, Jae Wook;Gil, Hyun Woo;Cho, Sung Hwoan;Lim, Sun-Young;Park, In-Seok
    • 한국발생생물학회지:발생과생식
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    • 제17권3호
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    • pp.187-198
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    • 2013
  • In this study, we measured the morphometric and histological changes in the cyprinid loach, Misgurnus anguillicaudatus, during the early period of growth. Eyes, yolk length, yolk height, and yolk volume of the larva decreased for 16 days post hatching (DPH) (P<0.05). During 60 DPH (P>0.05), the most anterior extension of the head ${\times}$ the posterior end of the supraoccipital, the most anterior extension of the head ${\times}$ the origin of the dorsal fin, the most anterior extension of the head ${\times}$ the origin of the pectoral fin, the posterior end of the supraoccipital ${\times}$ the origin of the pelvic fin, and the origin of the dorsal fin ${\times}$ the ventral origin of the caudal fin gradually decreased, whereas the most anterior extension of the head ${\times}$ the dorsal origin of the caudal fin, the origin of the dorsal fin ${\times}$ the origin of the anal fin, the origin of the dorsal fin ${\times}$ the origin of the pectoral fin, and the insertion of the dorsal fin ${\times}$ the origin of the pelvic fin gradually increased (P<0.05). In the cyprinid loach, the retina is composed of six layers: the epithelial layer, ganglion cell layer, inner nuclear layer, inner plexiform layer, outer limiting membrane, and rod and cone layer (RCL). After hatching, part of the RCL gradually increased in density. The kidney and midgut epithelium were already formed in the cyprinid loach just after hatching and grew gradually in subsequent days.

국내 서양종꿀벌 순계의 형태적 특징 (Morphometric Characterization of Honey Bee, Apis mellifera Linnaeus, Inbred Lines in Korea)

  • 올가프런제;최용수;김동원;박보선;박희근;강은진
    • 한국응용곤충학회지
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    • 제59권4호
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    • pp.371-382
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    • 2020
  • 이탈리안벌인 A, C, F계통과 코카시안벌인 D, V계통을 2005년부터 2007년까지 국내에서 수집하였다. 수집한 계통은 육종을 위해 격리된 섬에서 근친교배를 통해 순계로 분리하였다. 이 연구는 꿀, 로열젤리 다수확계통 선발에 있어 개체군 선발과 육종 효율을 높이기 위해 수행되었다. 23 개의 형태학적 특성을 평가하고 두 아종의 기존 데이터와 비교한 결과, 이탈리안벌 순계계통은 코카시안벌 순계 계통과 달리8개의 특성이 기존의 이탈리안벌과 유사해 더 많은 특성이 보존되고 있음을 알 수 있었다. 또한 국내에서 유지되고 있는 순계들은 타 지역의 동일 계통과 차이를 보여 분리된 순계의 형태적인 특징이 확인되었다.

Phenotypic diversity, major genes and production potential of local chickens and guinea fowl in Tamale, northern Ghana

  • Brown, Michael Mensah;Alenyorege, Benjamin;Teye, Gabriel Ayum;Roessler, Regina
    • Asian-Australasian Journal of Animal Sciences
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    • 제30권10호
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    • pp.1372-1381
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    • 2017
  • Objective: Our study provides information on phenotypes of local chickens and guinea fowl and their body measures as well as on major genes in local chickens in northern Ghana. Methods: Qualitative and morphometric traits were recorded on 788 local chickens and 394 guinea fowl in urban households in Tamale, Ghana. Results: The results showed considerable variation of color traits and numerous major genes in local chickens, while color variations and related genotypes in guinea fowl were limited. In local chickens, white was preferred for plumage, whereas dark colors were preferred for beak and shanks. More than half of the chickens carried at least one major gene, but the contributions of single gene carriers were low. All calculated allele frequencies were significantly lower than their expected Mendelian allele frequencies. We observed higher mean body weight and larger linear body measures in male as compared to female chickens. In female chickens, we detected a small effect of major genes on body weight and chest circumference. In addition, we found some association between feather type and plumage color. In guinea fowl, seven distinct plumage colors were observed, of which pearl grey pied and pearl grey were the most prevalent. Male pearl grey pied guinea fowl were inferior to pearl grey and white guinea fowl in terms of body weight, body length and chest circumference; their shank length was lower than that of pearl grey fowl. Conclusion: Considerable variation in qualitative traits of local chickens may be indicative of genetic diversity within local chicken populations, but major genes were rare. In contrast, phenotypic and genetic diversity in local guinea fowl is limited. Broader genetic diversity studies and evaluation of trait preferences of local poultry producers are required for the design of appropriate breeding programs.