IIBBA 05544
INSTITUTO DE INVESTIGACIONES BIOQUIMICAS DE BUENOS AIRES
Unidad Ejecutora - UE
artículos
Título:
Metamorphosis and gonad maturation in the horn fly, haematobia irritans
Autor/es:
BASSO, A.; FORNERIS, N.; FILIBERTI,A.; ARGARAÑA, C.; RABOSSI, A.; QUESADA ALLUÉ, LUIS A.
Revista:
JOURNAL OF INSECT SCIENCE
Editorial:
UNIV ARIZONA
Referencias:
Lugar: Arizona; Año: 2010
ISSN:
1536-2442
Resumen:
The bloodsucking horn fly Haematobia irritans (Diptera: Muscidae)
(L. 1758) is one of 30 the most damaging pests of pasture cattle in many areas
of the world. Both male and
31 female imagoes spend their adult stage on the host, while immature stages develop in
the
32 dung. In the present work, we established a standard life cycle in
laboratory conditions to
33 study the correlation between cuticle and eyes pigmentation and
maturation of the
34 gonad system. The
progression of germline cell divisions in immature gonads was
35 analyzed from the beginning of the third larval instar (48 h after
egg eclosion) until imago
36 ecdysis. In the developing male larval gonad, meiosis began at 72 h
after egg eclosion,
37 whereas in females only premeiotic oogonia were present at that time.
Meiosis was
not
38 detected in females until the mid-pharate adult stage, 120 h after
puparium formation.
39 Therefore, gonad maturation in females appears to be delayed 144 h
with respect to that in
40 males. In the stages within the puparium, the timing of germline cell
division events was correlated with the pigmentation progress of eyes and
cuticle external markers.
41
