The Role of Alternate Hosts in the Ecology and Life History of Hematodinium sp., a Parasitic Dinoflagellate of the Blue Crab (Callinectes sapidus)

2012 ◽  
Vol 98 (1) ◽  
pp. 73-84 ◽  
Author(s):  
Katrina M. Pagenkopp Lohan ◽  
Kimberly S. Reece ◽  
Terrence L. Miller ◽  
Kersten N. Wheeler ◽  
Hamish J. Small ◽  
...  
2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Lydia Png-Gonzalez ◽  
Vanesa Papiol ◽  
Rosa Balbín ◽  
Joan Enric Cartes ◽  
Aina Carbonell

AbstractThe invasive blue crab Callinectes sapidus has been frequently recorded during the last years along the NW Mediterranean Sea, leading to established populations. Two megalopae of C. sapidus were found during two different oceanographic surveys in open waters of the Balearic Archipelago, in July 2005 and October 2011, previous to the first reference of adult specimens documented in the Balearic sub-basin. The analyzed environmental conditions of the sampling periods allowed us to hypothesize the likely introduction pathways, namely by maritime transport and surface currents. Furthermore, the recorded megalopae seem to enlarge the life history of C. sapidus in regard to its native area, where spawning peaks occur in late July and early August.


2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Esethu Monakali

This article offers an analysis of the identity work of a black transgender woman through life history research. Identity work pertains to the ongoing effort of authoring oneself and positions the individual as the agent; not a passive recipient of identity scripts. The findings draw from three life history interviews. Using thematic analysis, the following themes emerge: institutionalisation of gender norms; gender and sexuality unintelligibility; transitioning and passing; and lastly, gender expression and public spaces. The discussion follows from a poststructuralist conception of identity, which frames identity as fluid and as being continually established. The study contends that identity work is a complex and fragmented process, which is shaped by other social identities. To that end, the study also acknowledges the role of collective agency in shaping gender identity.


Author(s):  
Andrea Carrasco ◽  
María E Díaz

Recent academic research highlights the role of leadership identity when thinking about the improvement of the educational field. Based on this research, this article aims to identify and analyze the elements that affect the development of leadership identity in female school principals within the Chilean context. This is achieved by working from a biographical-narrative approach, specifically from the life history technique. This analysis emerges from a considerate reflection on the teachings, and personal and professional milestones highlighted in the biogram. Both personally and professionally, a multiplicity of elements is observed in the life history of María Eliana, influencing the development of her leadership identity, particularly highlighting her self-recognition as a woman. This identity is oriented towards social justice, based on socio-emotional tools such as care, empathy, and participation; and understands and values the role these elements must take in Chilean education. The case study presents tensions for the Chilean educational system, which must be able to address the complexities that women experience while holding leadership positions, especially when challenged with the perspective that school is an inclusive space of social justice.


1977 ◽  
Vol 55 (1) ◽  
pp. 161-168 ◽  
Author(s):  
Graham R. Daborn

The life history of B. mackini was studied in a large argillotrophic lake during 1970–1972. Hatching began immediately after spring thaw and was terminated by rising salinity 10 days to 2 weeks later. Growth rates reached maxima of 1 mm/day at 4 weeks of age and then declined as mean size approached 22–23 mm at 7–8 weeks. Clutch sizes varied as a function of female length. Maximum biomass of 580 mg dry weight/m2 (2700 cal/m2) was reached in late May, of which 3.9% per day was consumed by B. gigas. Source of the energy is presumed to be a bacteria – organic matter complex associated with suspended particles. Life cycle details are compared with other fairy shrimp species and the role of B. mackini in the community is discussed.


Author(s):  
Srishti Jain

Color is of great importance in our India, without color, there is no basis for any object, person, color really tells us the nature of each other. The color or color refers to the color of the substance, red, yellow, blue. Depending on the combination of these, several distinctions of varna can be made. India is a religious country with different beliefs. Manuscripts have a special relationship with religion. Manuscripts are the best means of salvation for our teachers. One of them is the illustrated Jain manuscript Adipuran. The manuscript, which has been composed by Acharya Pushpadanta, depicts the life history of Lord Rishabhdev (the first Tirthankara) through paintings. The presented manuscript is stored in the scripture store of Terapanthiyan, the Digambar Jain big temple of Jaipur. Its clerical 1597 (AD 1540) is Falgun Shukla 13. Its writing work was done by a Brahmin man named Vishnudas and the paintings are made by Harinath Kayastha and his family. This 687-page manuscript has 541 colored illustrations corresponding to the biography of Tirthankara Rishabhdev. Mainly in the picture, the mineral color (made from a mixture of vegetable juices, ie the color made from the bark of clay stone trees, etc.) is the most used. Mainly ocher (red) Hironji (green) Ramaraj (yellow) ink (black) color is mainly used. The four colors used in the manuscript are symbols of Jainism, such as the red color (ocher) represents our inner vision, that is, the Siddha Parmeshti used in Jainism. Those who have attained salvation. Yellow color activates our mind. Green color gives peace. It helps in self-realization. Blue color is absorbent and does not allow the outside effect to go inside. Black color was used for writing in manuscripts. The ink for writing work was made with three methods. हमारे भारतवर्ष में रंग का बहुत महत्व है रंग के बिना किसी भी वस्तु, व्यक्ति का कोई आधार नहीं है सही मायने में रंग ही हमको एक दूसरे के स्वरूप को बताते हैं। वर्ण या रंग का अर्थ पदार्थ की रंगत से है लाल, पीला, नीला। इनके मिश्रण के आधार पर वर्ण के अनेक भेद किये जा सकते हैं। भारतदेश एक धर्म प्रधान देश है जिसमें विभिन्न मान्यतायें हैं। धर्म के साथ पाण्डुलिपियों का विशेष सम्बन्ध है पाण्डुलिपियाँ हमारे गुरूओं की मोक्ष साधना का उत्तम साधन है उनमें से एक है सचित्र जैन पाण्डुलिपि आदिपुराण। जिसकी रचना आचार्य पुष्पदंत ने की है पाण्डुलिपि में भगवान ऋषभदेव (प्रथम तीर्थंकर) के जीवन चरित को चित्रों के माध्यम से दर्शाया गया है। प्रस्तुत पाण्डुलिपि जयपुर के दिगम्बर जैन बड़ा मन्दिर तेरापंथियान के शास्त्र भण्डार में संग्रहित है। इसका लिपिकाल 1597 (ई. सन् 1540) फाल्गुन शुक्ल 13 है। इसका लेखन कार्य विश्नुदास नाम के ब्राह्मण व्यक्ति के द्वारा किया गया और चित्र हरिनाथ कायस्थ और उनके परिवार द्वारा बनाये गये हैं। 687 पृष्ठों की इस पाण्डुलिपि में तीर्थंकर ऋषभदेव के जीवनचरित के अनुरूप 541 रंगीन चित्र हैं। मुख्य रूप से चित्र में खनिज रंग (वनस्पति रसों के मिश्रण से निर्मित अर्थात् मिट्टी पत्थर वृक्षों की छाल आदि से बने रंग) का प्रयोग सर्वाधिक किया गया है। मुख्यतः गेरू (लाल) हिरोंजी (हरा) रामरज (पीला) स्याही (काला) रंग प्रमुख रूप से प्रयोग हुआ है। पाण्डुलिपि में प्रयुक्त चारों रंग जैन धर्म के प्रतीक हैं जैसे कि लाल रंग (गेरू) हमारी आंतरिक दृष्टि यानि कि जैन धर्म में प्रयुक्त सिद्ध परमेष्टी को दर्शाता है। जिन्होंने मोक्ष को प्राप्त कर लिया है। पीला रंग हमारे मन को सक्रिय करता है। हरा रंग शांति देता है। आत्मसाक्षात्कार में सहायक होता है। नीला रंग अवशोषक होता है वह बाहर के प्रभाव को अंदर नहीं जाने देता। काला रंग पाण्डुलिपियों में लेखनकार्य के लिये प्रयोग में लाया जाता था। लेखन कार्य के लिये स्याही तीन विधियों से बनायी जाती थी।


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