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Ovarian Maturation, Size at Sexual Maturity, and Spawning Season of Parapenaeus FissuroidesCrosnier, 1985 (Decapoda: Penaeidae)
- Source :
- Journal of Crustacean Biology. 36:815-822
- Publication Year :
- 2016
- Publisher :
- Oxford University Press (OUP), 2016.
-
Abstract
- Reproduction, including ovarian maturation, size at sexual maturity, and spawning season of Parapenaeus fissuroides Crosnier, 1985 (Decapoda: Penaeidae), were studied using females collected from Kagoshima Bay, Kyushu, Japan. The ovaries of individuals were examined by histological observations to estimate the degree of ovarian maturation. Ovarian maturity stages were classified into four categories based on the developmental stage of the most advanced oocytes in the ovary as follows: undeveloped, developing, nearly ripe, and ripe. The mature females were defined as those having nearly ripe or ripe ovaries containing cortical granules in the peripheral region of the oocytes. The gonadosomatic index (GSI) significantly increased with progress of ovarian maturation and most of the females with GSI ⩾ 6% were mature. The size at sexual maturity of female P. fissuroides was estimated to be 23.5 mm in carapace length. The spawning season of this species was estimated to last from July to February with a peak during October and November.
- Subjects :
- 0106 biological sciences
medicine.medical_specialty
Penaeidae
biology
Decapoda
010604 marine biology & hydrobiology
media_common.quotation_subject
010607 zoology
food and beverages
Cortical granule
Zoology
Ovary
Aquatic Science
biology.organism_classification
01 natural sciences
Gonadosomatic Index
medicine.anatomical_structure
Endocrinology
Internal medicine
medicine
Sexual maturity
Carapace
Reproduction
media_common
Subjects
Details
- ISSN :
- 1937240X and 02780372
- Volume :
- 36
- Database :
- OpenAIRE
- Journal :
- Journal of Crustacean Biology
- Accession number :
- edsair.doi...........b932d6dec8fc5dda530f38df45c894d9