1). Seven small villages with a total population of about 10,000 people are situated along the coastline (URT, 2002) (Fig. 1). Fishing is the most important economic activity in the bay (de la Torre-Castro

and Lyimo, 2012). SSF dynamics E7080 ic50 are complex due to the high heterogeneity of the fisher groups involved, the existence of multiple gears and fishing practices linked to a multifaceted combination of regulations and socio-cultural aspects (de la Torre-Castro and Lindstrom, 2010 and de la Torre-Castro, 2012a). SSF take place in a topographically complex sea bed with a tidal regime characterized by large fluctuations and seasonalities caused by the monsoon circulation in the Western Indian Ocean (WIO) (McClanahan, 1996 and Tobisson et al., 1998). The diversity of seagrass species is very high with eleven reported species. The most common species found are Thalassia hemprichii, Cymodocea serrulata, Nutlin-3a molecular weight C. rotundata, Halodule uninervis, H. wrightii, Thalassodendron ciliatum, Syringodium isoetifolium, Enhalus acoroides, and different Halophila spp. Seagrasses are spread throughout the whole bay substrate, but are particularly abundant in the West coast in front of Marumbi village (about 5 km north of Chwaka village, Fig. 1). Seagrasses are found in mixed meadows (primarily

dominated by T. hemprichii, Enhalus acoroides and Cymodocea spp.) as well Thymidylate synthase as mono-specific in shallow, deep and channel areas. Due to these facts, Chwaka Bay has been considered a hot-spot of seagrass diversity ( de la Torre-Castro and Lyimo, 2012). Fishing takes place daily over the entire area of the bay (about 50 km2) following seasonal (northeast monsoon, dry season and southeast monsoon) and tidal cycles (semidiurnal; range 1–4.5 m). Due to the heavy burden of fishing activities

and tidal constraints, fishers make only one trip per day usually spending about 6 h at sea. On the boat, the fish are threaded with a string to form what is colloquially known as a “batch” (mtungo). The “batch” is a collection of fish normally arranged by species which facilitates transportation and selling at the auction. Arriving to the shoreline, the batches are taken directly to the local markets where the fish is auctioned ( Appendix I, Supplementary Information). There are only three fish markets in the bay (Uroa – medium size, Marumbi – very small and Chwaka – biggest), fish coming from other villages along the bay’s coastline are normally sold in the Chwaka market due to the high number of buyers. The Chwaka village fish market besides being the largest, is the most visited and has a good quality paved road linking straight to the “capital” Zanzibar Town, the number of fish traders found in the Chwaka market is very high as well. Due to the above, all data for this research was compiled there ( Fig. 1).