TY - JOUR
T1 - First Records of an Egg Mass and a Paralarva of Thysanoteuthis rhombus (Cephalopoda: Thysanoteuthidae) in the Northeastern Tropical Pacific
AU - De Silva-Dávila, Roxana
AU - Avendaño-Ibarra, Raymundo
AU - Palomares-García, Ricardo
AU - Markaida, Unai
N1 - Publisher Copyright:
© 2019 by University of Hawai'i Press. All rights reserved.
PY - 2019/12/4
Y1 - 2019/12/4
N2 - An egg mass fragment and one paralarva of the squid Thysanoteuthis rhombus found in the Northeastern Tropical Pacific and Gulf of California, Mexico are the first evidence of reproduction of this species in the region. The egg mass fragment was in the disintegration process and contained 30,360 premature hatchlings (96.2%) and 1,192 eggs (3.8%) at different developmental stages. Head chromatophore patterns, buccal crown pigmentation, arm and tentacles indexes, and other morphological characteristics complement previous descriptions of T. rhombus paralarvae. The zooplanktonic community associated with the egg mass was dominated by six species of predatory copepods of the genus Labidocera, Pontella, Oncaea, and Corycaeus which might have actively colonized the egg mass to feed upon the eggs and hatchlings.
AB - An egg mass fragment and one paralarva of the squid Thysanoteuthis rhombus found in the Northeastern Tropical Pacific and Gulf of California, Mexico are the first evidence of reproduction of this species in the region. The egg mass fragment was in the disintegration process and contained 30,360 premature hatchlings (96.2%) and 1,192 eggs (3.8%) at different developmental stages. Head chromatophore patterns, buccal crown pigmentation, arm and tentacles indexes, and other morphological characteristics complement previous descriptions of T. rhombus paralarvae. The zooplanktonic community associated with the egg mass was dominated by six species of predatory copepods of the genus Labidocera, Pontella, Oncaea, and Corycaeus which might have actively colonized the egg mass to feed upon the eggs and hatchlings.
KW - Northeastern Tropical Pacific
KW - egg mass
KW - first record
KW - paralarvae
KW - predatory copepods
KW - squid Thysanoteuthis rhombus
UR - http://www.scopus.com/inward/record.url?scp=85076108295&partnerID=8YFLogxK
U2 - 10.2984/73.4.4
DO - 10.2984/73.4.4
M3 - Artículo
AN - SCOPUS:85076108295
SN - 0030-8870
VL - 73
SP - 475
EP - 491
JO - Pacific Science
JF - Pacific Science
IS - 4
ER -