The pronghorn spiny lobster Panulirus penicillatus is a highly valuable species which is widely distributed in Indo-West Pacific and Eastern Pacific regions. Mitochondrial DNA control region sequences (566–571 bp) were determined to investigate the population genetic structure of this species in the Indian Ocean. In total, 236 adult individuals of Panulirus penicillatus were collected from five locations in the Indian Ocean region. Almost all individuals had a unique haplotype. Intrapopulation haplotype (h) and nucleotide (π) diversities were high for each locality, ranging from h = 0.9986–1.0000 and π = 0.031593–0.043441. We observed distinct genetic isolation of population located at the northwestern and southwestern edge of the species range. Gene flow was found within localities in the central and eastern region of the Indian Ocean, probably resulting from an extended planktonic larval stage and prevailing ocean currents.

Tr en Bu çalışmada, probiyotik ürün olan promarinin beyaz Hint karidesi, Fenneropenaeus indicus larvalarının büyümesine etkisi değerlendirilmiştir. Çalışmada üç muamele ve bir kontrol kullanılmıştır. Promarine 15 ppm/m³ su (Tedavi 1), % 0.5 konsantrasyonda % 35 protein ihtiva eden ticari yem (Tedavi 2) ya da su ve yem ile kombinasyon halinde (Tedavi 3) tatbik edilmiştir. Kontrolde Promarine tatbik edilmemiştir. Deney fiberglas tanklarda (200 litre) 90 günlük bir sürede yürütülmüştür. Kontrol grubu ve Tedavi 3 ile karşılaştırıldığında en yüksek büyüme oranları Promarine yem (Tedavi 2) ve suyla (Tedavi 1) verilen yavrularda gözlenmiştir. Tedaviler arasında suda amonyak ve nitrit konsantrasyonlarında önemli farklılıklar görülmedi. Promarinenin F. indicus post larva büyüme ve yaşamasını geliştirdiği bulunmuştur. In this study, the impact of a probiotic product, Promarine was evaluated on the growth responses of post larvae of Indian white prawn, Fenneropenaeus indicus. There were three treatments and a control in the study. Promarine was either separately administered through water at 15 ppm/m³ (Treatment 1) and through a commercial feed containing 35% protein at a concentration of 0.5% (Treatment 2) or in combination through water and feed (Treatment 3). The control was maintained without administering Promarine. The experiment lasted for a period of 90 days in fiber glass tanks (200 liter). Higher growth rates were observed in juveniles grown on Promarine through feed (Treatment 2) and water (treatment 1) when compared with Treatment 3 and control. There were no significant differences in water ammonia and nitrite concentrations among the treatments. Promarine was found to enhance growth and survival of post larvae of F. indicus.