Marine plastic debris that is transported will move with the flow of water and float then be degraded into smaller particles, namely microplastics, sink settle on substrate. Sea urchins as deposit feeders have potential to ingest microplastic where these particles can influence changes in behavior, growth, enzyme production, reproduction, tissue structure. This study used a purposive sampling m...

The annual alteration of gonad morphology in sardine (Sardina pilchardus, Walbaum 1792) caught in the period from November 2006 to October 2007 using beach seines in the region of Boka Kotorska Bay (Montenegro, southern Adriatic) was studied. Samples were taken in the middle of each month. Total length of individuals ranged from 8.7 to 14.7 cm and weight ranged from 4.67 to 22.61 g. Their gonad...

Ovarian germ cell tumors (OGCTs) show a heterogeneity that is not seen in their testicular counterparts and include benign mature cystic teratomas, intermediate immature teratomas, malignant germ cell tumors [GCTs (dysgerminomas, endoderma! sinus tumors, and mixed GCTs)], and GCTs arising in dysgenetic gonads of 46,XY individuals. Comparative genomic hybridization was used to analyze 27 OGCTs f...

The spiny lobster Panulirus homarus, distributed along the Southeast and Southwest coasts of India, is an important commercial species having mariculture potential. Despite its importance, the structural and ultrastructure features of male gonads from this species have received scarce attention. Hence this study was aimed to describe the male reproductive tract of the species, using standard hi...

Stem cells can self-renew and maintain the ability to differentiate into mature lineages. Whereas the ‘‘stemness’’ of embryonic stem cells is not discussed, the primitiveness of a stem cell type within adult organisms is not well determined. Data presently available are either inconclusive or controversial regarding two main topics: maintenance or senescente of the adult stem cell pool; and plu...

Aims: Reproductive parameters are important tools for the sustainable management of halieutic species in water bodies its exploitation. This study intends to characterize sexual maturity scale swimming crab Callinectes pallidus, perform testicular and ovarian structures order develop a specific scale.
 Study Design: was carried out with macroscopic microscopic observations 394 specimens cr...

Knowledge on the energy distribution during the reproductive cycle of the giant lion-paw scallop, Nodipecten subnodosus is limited, but necessary for aquaculture purposes. In a previous work, we found that natural food availability can sustain the full cost of gametogenesis in optimal environmental conditions. The present study analyses the lipid and sterol classes’ composition of several tissu...

Ovarian germ cell tumors (OGCTs) show a heterogeneity that is not seen in their testicular counterparts and include benign mature cystic teratomas, intermediate immature teratomas, malignant germ cell tumors [GCTs (dysgerminomas, endodermal sinus tumors, and mixed GCTs)], and GCTs arising in dysgenetic gonads of 46,XY individuals. Comparative genomic hybridization was used to analyze 27 OGCTs f...