TY - JOUR
T1 - Histological evidence of Bluefin tuna (Thunnus thynnus Linnaeus, 1758) spawning in waters within the Mexican Exclusive Economic Zone in the Gulf of Mexico
AU - Ortega-García, Sofía
AU - Abad-Uribarren, Alberto
AU - Jakes-Cota, Ulianov
AU - Vélez-Arellano, Nurenskaya
N1 - Publisher Copyright:
© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2019/8/9
Y1 - 2019/8/9
N2 - Ovaries of bluefin tuna, Thunnus thynnus, from organisms measuring 247.62 ± 3.54 cm fork length collected within the Mexican Exclusive Economic Zone in the Gulf of Mexico, were examined. The highest gonadosomatic index was recorded in April (1.6 ± 0.28), coinciding with the presence of oocytes with a migratory nucleus (oocyte diameter 439 ± 32.84 µm); fully developed gonads were also observed in two females and two males (ovaries or testes, respectively) caught in late April when sea surface waters exceeded 26 °C. The microscopic examination of the gonads sampled showed structures that evidenced spawning in females measuring 280 cm FL.
AB - Ovaries of bluefin tuna, Thunnus thynnus, from organisms measuring 247.62 ± 3.54 cm fork length collected within the Mexican Exclusive Economic Zone in the Gulf of Mexico, were examined. The highest gonadosomatic index was recorded in April (1.6 ± 0.28), coinciding with the presence of oocytes with a migratory nucleus (oocyte diameter 439 ± 32.84 µm); fully developed gonads were also observed in two females and two males (ovaries or testes, respectively) caught in late April when sea surface waters exceeded 26 °C. The microscopic examination of the gonads sampled showed structures that evidenced spawning in females measuring 280 cm FL.
KW - Atlantic bluefin tuna
KW - gonadosomatic index
KW - histology
KW - reproduction
UR - http://www.scopus.com/inward/record.url?scp=85073961491&partnerID=8YFLogxK
U2 - 10.1080/17451000.2019.1662448
DO - 10.1080/17451000.2019.1662448
M3 - Artículo
SN - 1745-1000
VL - 15
SP - 444
EP - 450
JO - Marine Biology Research
JF - Marine Biology Research
IS - 7
ER -