Diseases and parasites are important mortality factors affecting cervid populations. Meningeal worm (Parelaphostrongylus tenuis) is a nematode parasite found in white-tailed deer (Odocoileus virginianus) populations throughout eastern North America. To determine the distribution of meningeal worm in South Dakota, heads of hunter harvested deer were examined for P. tenuis from 1997-1999. A total...

Abstract The beach in Inner Ambon Bay is used by coastal communities to carry out various activities including household waste disposal, fishing and tourism. These cause the entry of into water bodies resulting a decrease quality. This will lead pollution on coast if left unchecked. One resources living gastropods which are generally able describe waters conditions, so their presence can be as ...

Caribbean reef corals have declined sharply since the 1980s, but the lack of prior baseline data has hindered identification of drivers of change. To assess anthropogenic change in reef environments over the past century, we tracked the composition of subfossil assemblages of bivalve and gastropod mollusks excavated from pits below lagoonal and offshore reefs in Bocas del Toro, Panama. The high...

Information on dietary habits of mesograzers in Posidonia oceanica seagrass meadows is scarce and restricted to a few species. Here we provide data on the most likely food sources for eight gastropod species inferred from stable isotope data. We observed very similar isotopic signals for all species regardless of trophic guild category, indicating similar consumption behaviour with a main diet ...

The duration of cirral withdrawal in Balanus glandula (Darwin) varies by a factor of three depending on the type of stimulus applied. Contact with potential predators including thaidid gastropods (Thais emarginata, T. lamellosa), and forcipulate asteroids (Leptasterias hexactis, Pycnopodia helianthoides) elicits significantly longer withdrawal durations than contact with an herbivorous gastropo...

The observation that geographic range size in Cretaceous mollusks is correlated with species survivorship and is heritable at the species level has figured repeatedly in discussions of species selection over the past two decades. However, some authors have suggested that the relationship between mode of larval development and geographic range supports the reduction of this example to selection ...

Objective: To investigate the antifungal, haemolytic and cytotoxic activity of methanol and methanol: chloroform extracts of the marine Mollusks (10 Gastropods, 5 Bivalves, 2 Cephalopods) and 1 Echinoderm. Methods: Crude methanol and methanol: chloroform extracts of the marine Mollusks (10 Gastropods, 5 Bivalves, 2 Cephalopods) and 1 Echinoderm were tested for antifungal activity using disc dif...

feeding habits of yellowfin seabream, acanthopagrus latus was investigated in coastal waters of the northern persian gulf. this investigation was conducted by monthly sampling of thirty fish from september 2011 through august 2012. fish size ranged from 17.98 ± 2.07 to 32.31 ± 6.52 cm in total length and from 134.01 ± 45.62 to 720.46 ± 292.58 g in weight. the highest value of gastro-somatic ind...

The present study was conducted to investigate the effects of cyclone Gonu on species diversity and abundance of gastropods in the Qeshm Island, northern Persian Gulf, on the occasion of the occurrence of super cyclonic and strongest reported storm- Gonu- during 1-4, June 2007 in the eastern Arabian Sea. Samples were collected before the Gonu storm (late May and early June 2007) and twice ...

The ecological impacts of Hydrodictyon reticulatum blooms (1989-94) were studied at Lake Aniwhenua (a constructed lake) in North Island, New Zealand by collating fish, invertebrate and macrophyte data collected towards the end of a four year bloom period and following its decline. Hydrodictyon reticulatum had some localised impacts on the biota of the lake. Some macrophyte beds were smothered t...