Spawning ecology of Girella punctata and G. leonina (Perciformes: Girellidae) in the coastal waters of the Izu Peninsula, Japan

The girellid fishes, Girella punctata and G. leonina, are commercially important fishes in Japan, but interspecific differences in their spawning ecology are unclear. In the present study, seasonal variations in the species composition and gonadosomatic index (GSI) were examined for G. punctata and G. leonina collected from the coastal waters of the Izu Peninsula, in order to clarify the spawning ecology of these two species. Both adults and juveniles were genetically identified by PCR-RFLP using mtDNA. The GSI of G. punctata showed markedly high values (>15.0) in April, whereas the GSI values of G. leonina were constantly low (<0.5). This result suggests that the coastal area of the Izu Peninsula is utilized as a spawning ground by G. punctata but not by G. leonina. Juveniles of G. punctata mostly appeared from May to July, whereas those of G. leonina appeared during the longer period from January to June. Juveniles of G. punctata born in the study area are inferred to settle to the sea bottom around the spawning ground after a one-month planktoninc life phase, whereas G. leonina juveniles are likely to be immigrants from another area

Spawning ecology of Girella punctata and G. leonina (Perciformes: Girellidae) in the coastal waters of the Izu Peninsula, Japan

The girellid fishes, Girella punctata and G. leonina, are commercially important fishes in Japan, but interspecific differences in their spawning ecology are unclear. In the present study, seasonal variations in the species composition and gonadosomatic index (GSI) were examined for G. punctata and G. leonina collected from the coastal waters of the Izu Peninsula, in order to clarify the spawning ecology of these two species. Both adults and juveniles were genetically identified by PCR-RFLP using mtDNA. The GSI of G. punctata showed markedly high values (>15.0) in April, whereas the GSI values of G. leonina were constantly low (<0.5). This result suggests that the coastal area of the Izu Peninsula is utilized as a spawning ground by G. punctata but not by G. leonina. Juveniles of G. punctata mostly appeared from May to July, whereas those of G. leonina appeared during the longer period from January to June. Juveniles of G. punctata born in the study area are inferred to settle to the sea bottom around the spawning ground after a one-month planktoninc life phase, whereas G. leonina juveniles are likely to be immigrants from another area

The role of chest imaging in the diagnosis, management, and monitoring of coronavirus disease 2019 (COVID-19)

Abstract Coronavirus disease 2019 (COVID-19) pandemic has posed a major public health crisis all over the world. The role of chest imaging, especially computed tomography (CT), has evolved during the pandemic paralleling the accumulation of scientific evidence. In the early stage of the pandemic, the performance of chest imaging for COVID-19 has widely been debated especially in the context of comparison to real-time reverse transcription polymerase chain reaction. Current evidence is against the use of chest imaging for routine screening of COVID-19 contrary to the initial expectations. It still has an integral role to play, however, in its work up and staging, especially when assessing complications or disease progression. Chest CT is gold standard imaging modality for COVID-19 pneumonia; in some situations, chest X-ray or ultrasound may be an effective alternative. The most important role of radiologists in this context is to be able to identify those patients at greatest risk of imminent clinical decompensation by learning to stratify cases of COVID-19 on the basis of radiologic imaging in the most efficient and timely fashion possible. The present availability of multiple and more refined CT grading systems and classification is now making this task easier and thereby contributing to the recent improvements achieved in COVID-19 treatment and outcomes. In this article, evidence of chest imaging regarding diagnosis, management and monitoring of COVID-19 will be chronologically reviewed.http://deepblue.lib.umich.edu/bitstream/2027.42/173412/1/13244_2021_Article_1096.pd

A case of intermittent CT imaging for up to 2 hours following asymptomatic air emboli due to a CT-guided lung biopsy

Air emboli represent rare but severe complications of computed tomography (CT)-guided lung biopsy (CTLB). No reports exist regarding the behavior of air during the early stages of air emboli. We present a case of air emboli following CTLB, evaluated by intermittent CT over a 2-hour period, spanning from onset to resolution.A man in his 60s underwent CTLB for diagnosis of a slowly enlarging pulmonary nodule in the right lower lobe. Immediately post-biopsy, chest CT revealed air emboli in the right coronary artery and apex of the ascending aorta. The patient was in the head-down position on the CT table, and intermittent CT scans were performed over a 2-hour period until the air emboli resolved. Subsequently, the patient was discharged without any complications