The annual reproductive cycle of the snail Megalobulimus abbreviatus (Bequaert, 1948) (Gastropoda, Pulmonata)
Morphological changes in the sexual organs of the pulmonates were observed throughout a year and correlated with reproductive-cycle periods. Reproductive-organ weights of the snail Megalobulimus abbreviatus were recorded seasonally and gonad sections were analyzed morphologically. The weights were u...
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doaj-4a5aa248ba364407871d02a83668d50a2020-11-25T01:34:16ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-437565345946710.1590/S1519-69842005000300011S1519-69842005000300011The annual reproductive cycle of the snail Megalobulimus abbreviatus (Bequaert, 1948) (Gastropoda, Pulmonata)A. C. M. Horn0A. Achaval1D. M. Zancan2Departamento de Ciências MorfológicasDepartamento de Ciências MorfológicasUniversidade Federal do Rio Grande do SulMorphological changes in the sexual organs of the pulmonates were observed throughout a year and correlated with reproductive-cycle periods. Reproductive-organ weights of the snail Megalobulimus abbreviatus were recorded seasonally and gonad sections were analyzed morphologically. The weights were used to obtain the organosomatic index. Mean oocytic diameter and oocytic maturation index were based on gonad sections. It was concluded that M. abbreviatus is an iteroparous snail whose annual reproductive cycle is characterized by mating and egg laying throughout spring and early summer, and also by reproductive system preparation, occurring over the remainder of the summer until the end of winter, for a new breeding season.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842005000300011&lng=en&tlng=enPulmonataMegalobulimusreproductive cyclereproductive systemovotestis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
A. C. M. Horn A. Achaval D. M. Zancan |
spellingShingle |
A. C. M. Horn A. Achaval D. M. Zancan The annual reproductive cycle of the snail Megalobulimus abbreviatus (Bequaert, 1948) (Gastropoda, Pulmonata) Brazilian Journal of Biology Pulmonata Megalobulimus reproductive cycle reproductive system ovotestis |
author_facet |
A. C. M. Horn A. Achaval D. M. Zancan |
author_sort |
A. C. M. Horn |
title |
The annual reproductive cycle of the snail Megalobulimus abbreviatus (Bequaert, 1948) (Gastropoda, Pulmonata) |
title_short |
The annual reproductive cycle of the snail Megalobulimus abbreviatus (Bequaert, 1948) (Gastropoda, Pulmonata) |
title_full |
The annual reproductive cycle of the snail Megalobulimus abbreviatus (Bequaert, 1948) (Gastropoda, Pulmonata) |
title_fullStr |
The annual reproductive cycle of the snail Megalobulimus abbreviatus (Bequaert, 1948) (Gastropoda, Pulmonata) |
title_full_unstemmed |
The annual reproductive cycle of the snail Megalobulimus abbreviatus (Bequaert, 1948) (Gastropoda, Pulmonata) |
title_sort |
annual reproductive cycle of the snail megalobulimus abbreviatus (bequaert, 1948) (gastropoda, pulmonata) |
publisher |
Instituto Internacional de Ecologia |
series |
Brazilian Journal of Biology |
issn |
1678-4375 |
description |
Morphological changes in the sexual organs of the pulmonates were observed throughout a year and correlated with reproductive-cycle periods. Reproductive-organ weights of the snail Megalobulimus abbreviatus were recorded seasonally and gonad sections were analyzed morphologically. The weights were used to obtain the organosomatic index. Mean oocytic diameter and oocytic maturation index were based on gonad sections. It was concluded that M. abbreviatus is an iteroparous snail whose annual reproductive cycle is characterized by mating and egg laying throughout spring and early summer, and also by reproductive system preparation, occurring over the remainder of the summer until the end of winter, for a new breeding season. |
topic |
Pulmonata Megalobulimus reproductive cycle reproductive system ovotestis |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842005000300011&lng=en&tlng=en |
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