Parasitic castration of the green echinoid Strongylocentrotus droebachiensis by the nematode endoparasite Echinomermella matsi:reduced reproductive potential and reproductive death
نویسندگان
چکیده
منابع مشابه
Population Dynamics and Spatial Analysis of the Maine Green Sea Urchin (strongylocentrotus Droebachiensis) Fishery By
Fisheries research on the green sea urchin in Maine has been limited despite its importance to the state's fishing industry. The objective of this thesis was to generate critical information for the management and monitoring of the Maine green sea urchin fishery. In particular there are three main areas of interest: (1) an investigation of biological reference points; (2) spatial analysis and b...
متن کاملSpatial and temporal variation in growth of the green sea urchin, Strongylocentrotus droebachiensis, in
The green sea urchin, Strongylocentrotus droebachiensis, is found primarily in subtidal habitats but also occurs in low intertidal pools in the Gulf of Maine. Previous studies of low intertidal populations on Swans Island, Maine, USA, found that this species is slow growing and long lived. However, these population parameter estimates may not be representative because low intertidal pools are a...
متن کاملa study of the fifth child and ben in the world by doris lessing in the light of julia kristevas psychoanalytic concepts
این مطالعه به بررسی عوامل روانشناختی کریستوادردو رمان دوربس لسینگ،فرزندبنجم و بن دردنیای واقعی می بردازد.موفقیت یا شکست کاراکترهادر تکمیل شکست تتیزی یه کمک بدر وهم از مهم ترین دغدغه محقق می باشد.به بررسی تحلیل روانشناختی تمامی کاراکترها خصوصا بن برداخته و به دنبال نشانه هایی از جامعه شیشه ای کریستوا می باشد.
15 صفحه اولAcclimation and growth response of the green sea urchin Strongylocentrotus droebachiensis to fluctuating salinity
Sea urchins are osmoconformers and not typically found in euryhaline habitats. Yet the green sea urchin, Strongylocentrotus droebachiensis, is often found in areas periodically exposed to low salinity, e.g., near the mouths of rivers in the Gulf of Maine. These areas represent some of the most productive sea urchin fishing grounds in the northwestern Atlantic and are currently targeted for stoc...
متن کاملstudy of cohesive devices in the textbook of english for the students of apsychology by rastegarpour
this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
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ژورنال
عنوان ژورنال: Diseases of Aquatic Organisms
سال: 1996
ISSN: 0177-5103,1616-1580
DOI: 10.3354/dao024215