말쥐치(Thamnaconus modestus) 정액의 물리화학적 특성과 정자의 미세구조에 대하여 분석하였다. 정액량과 정자 농도, spermatocrit는 각각 $0.3{pm}0.1;mL{cdot}fish^{-1}$, $2.6{pm}0.1{ imes}10^7;spermatozoa{cdot}mL^{-1}$, $73.3{pm}6.7$였다. 정장의 화학적 조성에 있어서 potassium $9.8{pm}0.9;mmol{cdot}L^{-1}$, sodium $164.0{pm}4.0;mmol{cdot}L^{-1}$, chloride $151.0{pm}1.2;mmol{cdot}L^{-1}$, calcium $14.9{pm}0.6;mg{cdot}dL^{-1}$, magnesium $7.2{pm}0.1;mg{cdot}dL^{-1}$, glucose $1.0;mg{cdot}dL^{-1}$, 총단백질 $0.1;g{cdot}dL^{-1}$, 총지질 $1.0;mg{cdot}dL^{-1}$였으며, 삼투질농도와 pH는 각각 $322.8{pm}2.8;mOsmol{cdot}kg^{-1}$ and $7.7{pm}0.1$였다. 투과형 전자현미경으로 미세구조를 관찰한 결과, 정자는 첨체가 없는 머리, 5개의 미토콘드리아로 이루어진 중편부 및 "9+2"의 미세소관 편모를 가진 꼬리로 구성되어 있었다. 세로로 절단한 정자 머리는 장경 $1.3{sim}1.6;{mu}m$, 단경 $1.0{sim}1.3;{mu}m$로 말편자 모양을 하고 있었다.
The milt properties of filefish(Thamnaconus modestus) included physical properties of sperm and biochemical properties of seminal plasma. The physical properties of milt were $0.3{pm}0.1;mL{cdot}fish^{-1}$ in sperm volume, $2.6{pm}0.1{ imes}10^7;spermatozoa{cdotg}mL^{-1}$ in sperm concentration and $73.3{pm}6.7$ in spermatocrit. The biochemical properties of seminal plasma contained $9.8{pm}0.9;mmol{cdot}L^{-1}$ potassium, $164.0{pm}4.0;mmol{cdot}L^{-1}$ sodium, $151.0{pm}1.2;mmol{cdot}L^{-1}$ chloride, $14.9{pm}0.6;mg{cdot}dL^{-1}$ calcium, $7.2{pm}0.1;mg{cdot}dL^{-1}$ magnesium, $1.0;mg{cdot}dL^{-1}$ glucose, $0.1;g{cdot}dL^{-1}$ total protein and $1.0;mg{cdot}dL^{-1}$ total lipid. The osmolality and pH of seminal plasma were $322.8{pm}2.8;mOsmol{cdot}kg^{-1}$ and $7.7{pm}0.1$, respectively. The spermatozoon of filefish consisted of three parts: head without acrosome, mid-piece with five mitochondria and flagellum with "9+2" pattern. The head of spermatozoon in longitudinal section was horseshoe-shaped, and $1.3{sim}1.6;{mu}m$ long and $1.0{sim}1.3;{mu}m$ wide.
