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Reproduction in the deepwater squid Moroteuthis ingens, what does it cost?

机译：在深海鱿鱼Moroteuthis ingens中繁殖，需要多少费用？

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摘要

The cost of reproduction for the terminal spawning onychoteuthid squid, Moroteuthis ingens, was analysed using measures of condition and tissue biochemistry. Both males and females showed a dramatic drop in the weight of the gonad in stage 6 (spent) individuals. The mantle weight and nidamental gland weight of females also decreased during the maturation process. Males, however, had a marked increase in both the penis and spermatophoric complex weight in spent individuals, while female oviducal gland weight and nidamental gland length also increased in stage 6 individuals. Residual analysis indicated that testis growth was not developing at the expense of mantle growth, although there was a suggestion of cost to the fins. Females showed that the development of the ovary occurred at a cost to both the mantle and fins. Overall body condition also declined with maturity stage for both males and females, with stage 6 individuals of both sexes in poor condition. Very few females had eggs in the oviducts, suggesting that the oviducts are used as ducts instead of storage organs. Proximal analysis revealed a loss of constituents within the mantle during maturation, with an associated increase in water, indicating the remobilization of energy from the mantle to fuel reproduction. This study suggests that the digestive gland is not used as an energy store in this species.
机译：使用条件和组织生物化学的方法分析了最终产卵甲鱼的鱿鱼Moroteuthis ingens的繁殖成本。男性和女性在第6阶段（已度过）的个体中都表现出性腺重量的显着下降。在成熟过程中，雌性的地幔重量和n腺的重量也减少了。然而，雄性花粉个体的阴茎和精原体复合体重量均显着增加，而在6期个体中雌性输卵管腺体重量和新生腺体长度也有所增加。残留分析表明，尽管有人暗示鳍的成本高昂，但睾丸的生长并未以披头盖的生长为代价。雌性显示，卵巢的发育是以地幔和鳍为代价的。男性和女性的总体身体状况都随着成熟阶段的下降而下降，其中有6个阶段的两性状况较差。很少有雌性在输卵管中有卵，这表明输卵管被用作导管而不是存储器官。近端分析表明，在成熟过程中，地幔内的成分会损失，伴随着水的增加，这表明能量从地幔转移到了燃料的繁殖。这项研究表明，该物种不将消化腺用作能量存储。

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