Various putative oxygen chemosensory cells are reported to be present throughout the vertebrate body performing pivotal roles in respiration by initiating responses during acute hypoxia. Since air-breathing fishes often are exposed to the oxygen-deficient milieu, in such conditions various chemosensory cells operate in an orchestrated fashion. The Pseudobranchial neurosecretory system (PSNS) a newly discovered system, is one of these. It has been placed in the category of "Diffuse NE systems (DNES)". It is found in all the catfish species and in some other non-catfish group of teleosts. In catfishes, it is present in close association with the carotid labyrinth- a chemosensory structure, known in fish and amphibians. The presence of this system in Glossogobius giuris, in association with the pseudobranch, a structure considered to be precursor of carotid labyrinth, is a significant finding. In an attempt to study the structure and organization of the pseudobranchial neurosecretory system in a non-catfish species of teleost, the present investigation was undertaken on a goby G. giuris. The histological observations, using a neurosecretion-specific stain, revealed the presence of this system in G. giuris. The findings are discussed in the light of the association of PSNS with pseudobranch and the type of "neurohaemal contact complex" formed between this neurosecretory system and the elements of the circulatory system.

中文翻译：

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坦克虾虎鱼 Glossogobius giuris 的副神经元假分支神经分泌系统，特别参考新型神经血液接触复合物。

据报道，各种假定的氧化学感应细胞存在于整个脊椎动物体内，通过在急性缺氧期间启动反应，在呼吸中发挥关键作用。由于呼吸空气的鱼经常暴露在缺氧环境中，在这种情况下，各种化学感应细胞以精心策划的方式运作。新发现的伪鳃神经分泌系统 (PSNS) 就是其中之一。它已被归入“扩散 NE 系统 (DNES)”类别。它存在于所有鲶鱼物种和其他一些非鲶鱼类硬骨鱼中。在鲶鱼中，它与颈动脉迷路（一种在鱼类和两栖动物中已知的化学感应结构）密切相关。该系统在 Glossogobius giuris 中的存在，与假枝相关，一个被认为是颈动脉迷路前体的结构是一个重要的发现。为了研究硬骨鱼非鲶鱼种的假鳃神经分泌系统的结构和组织，本研究是对虎鱼 G. giuris 进行的。使用神经分泌特异性染色进行的组织学观察揭示了该系统在 G. giuris 中的存在。根据 PSNS 与假分支的关联以及该神经分泌系统与循环系统元素之间形成的“神经血液接触复合物”类型，对这些发现进行了讨论。目前的调查是对虾虎鱼 G. giuris 进行的。使用神经分泌特异性染色进行的组织学观察揭示了该系统在 G. giuris 中的存在。根据 PSNS 与假分支的关联以及该神经分泌系统与循环系统元素之间形成的“神经血液接触复合物”类型，对这些发现进行了讨论。目前的调查是对虾虎鱼 G. giuris 进行的。使用神经分泌特异性染色进行的组织学观察揭示了该系统在 G. giuris 中的存在。根据 PSNS 与假分支的关联以及该神经分泌系统与循环系统元素之间形成的“神经血液接触复合物”类型，对这些发现进行了讨论。