Male Cuttlefish's Reproductive System: |
Female cuttlefish reproductive system: |
prrimary Reproductive Organs:
Single testis (posterior mantle cavity) Vas deferens (ciliated funnel) Spermatophoric organ Vas efferens (ciliated tube) Spermatophoric sac (Needham's sac) |
primary Reproductive Organs:
Single large ovary (posterior mantle cavity) Oviduct . Oviducal gland (distal end of oviduct) . Paired nidamental glands (mantle cavity) Accessory nidamental glands |
Sperm Development Process:
1. Sperm produced in testis 2. Travel through vas deferens 3. Formed into spiral mass in spermatophoric organ 4. Coated with membranes to become spermatophores (sperm packets) 5. Stored in spermatophoric sac (Needham's sac) until copulation |
|
Key Functions: o . Testis: produces sperm - Vas deferens: transports sperm o Spermatophoric organ: forms spermatophores o Vas efferens: transports spermatophores o Spermatophoric sac: stores spermatophores
Unique Features:
1. Ciliated funnels for sperm transport 2. Spermatophore formation for efficient fertilization 3. Specialized storage sac for spermatophores
Mating Process: 1. Male transfers spermatophores to female's mantle cavity 2. Fertilization occurs inside female's mantle cavity 3. Female lays eggs, which are then fertilized |
Key Functions:
Unique Features:
|
- Home-icon
- Features
- study materials
- drawings
- pictures
- ppt
- poems
- bfsc(notes)
- _Marine fisheries
- _Aquatic ecology
- _Fish food organisms
- _Fish immunology
- _Limnology
- _marine biology
- _anatomy of finfish
- _anatomy of shellfish
- _taxonomy of finfish & shellfish
- _ICT
- _refrigeration
- _fisheries economics
- _food chemistry
- _meterology
- _freshwater aquaculture
- gk
0 Comments